CN217737578U - Carbon dioxide refrigerating system based on photovoltaic photo-thermal and soil cross-season cold accumulation supercooling - Google Patents
Carbon dioxide refrigerating system based on photovoltaic photo-thermal and soil cross-season cold accumulation supercooling Download PDFInfo
- Publication number
- CN217737578U CN217737578U CN202221747088.XU CN202221747088U CN217737578U CN 217737578 U CN217737578 U CN 217737578U CN 202221747088 U CN202221747088 U CN 202221747088U CN 217737578 U CN217737578 U CN 217737578U
- Authority
- CN
- China
- Prior art keywords
- valve
- inlet
- water
- outlet
- pressure stage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002689 soil Substances 0.000 title claims abstract description 82
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000004781 supercooling Methods 0.000 title claims abstract description 35
- 238000009825 accumulation Methods 0.000 title claims abstract description 33
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 28
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- 238000005057 refrigeration Methods 0.000 claims abstract description 69
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- 238000001816 cooling Methods 0.000 claims abstract description 30
- 239000003507 refrigerant Substances 0.000 claims abstract description 18
- 239000008399 tap water Substances 0.000 claims description 28
- 235000020679 tap water Nutrition 0.000 claims description 28
- 238000005338 heat storage Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- 239000008400 supply water Substances 0.000 claims description 2
- 238000003860 storage Methods 0.000 abstract description 26
- 238000010248 power generation Methods 0.000 abstract description 8
- 239000012080 ambient air Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 47
- 239000003570 air Substances 0.000 description 16
- 239000007864 aqueous solution Substances 0.000 description 15
- 239000012530 fluid Substances 0.000 description 10
- 239000002826 coolant Substances 0.000 description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 238000010792 warming Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012809 cooling fluid Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Landscapes
- Other Air-Conditioning Systems (AREA)
Abstract
The utility model discloses a carbon dioxide refrigerating system based on cold-storage subcooling is striden with soil to photovoltaic light and heat, include: PV/T system, with CO 2 Connected to the refrigeration cycle system for supplying CO 2 The refrigeration cycle system provides electric energy and hot water for users; CO2 2 A refrigeration cycle system for refrigerating a preset space; the heating system is used for heating a preset space; the soil cold accumulation supercooling circulating system is respectively connected with the PV/T system and the CO 2 A refrigeration cycle system connected to the PV/T system for storing cold in the soil in winter and releasing cold from the soil in summer 2 The refrigeration cycle system performs cooling. The utility model discloses utilize the heat that gas cooler produced and environmental energy, running water cold volume and the natural cold volume in the outside ambient air, cooling refrigerant and solar panel have improved whole CO 2 The refrigeration efficiency of the refrigeration system and the power generation efficiency of the PV/T system.
Description
Technical Field
The utility model relates to a refrigerating system technical field especially relates to stride cold-storage supercooled carbon dioxide refrigerating system in season based on photovoltaic light and heat and soil.
Background
With the increasing global climate problem, the refrigeration and air-conditioning industry also needs to find environmentally friendly refrigerants to replace high GWP (global warming potential) refrigerants such as HFCs.
In recent years, the substitution of refrigerant becomes a problem to be solved urgently in the refrigeration air-conditioning industry. Wherein, natural working medium carbon dioxide CO 2 The refrigerant is an environment-friendly natural working medium which is non-toxic, non-combustible, rich in source and large in unit volume refrigerating capacity, has zero ODP (ozone hazard degree) and extremely low GWP (global warming potential), and is favored by the industry.
However, CO 2 The critical temperature of (A) is only 31.1 ℃, and the critical pressure of (A) is as high as 7.38MPa, so that the throttling irreversible loss of (A) is large, and the whole CO is 2 The refrigeration efficiency of the refrigeration system is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a to the technical defect that prior art exists, provide and stride cold-storage supercooled carbon dioxide refrigerating system in season based on photovoltaic light and heat and soil.
Therefore, the utility model provides a carbon dioxide refrigerating system based on cold-storage subcooling is striden to photovoltaic light and heat and soil season, including PV/T system, CO 2 The system comprises a refrigeration cycle system, a heating system and a soil cold accumulation and supercooling cycle system;
PV/T system, with CO 2 Connected to the refrigeration cycle system for supplying CO 2 The refrigeration cycle system provides electric energy and provides hot water for users;
CO 2 a refrigeration cycle system for refrigerating a preset space;
the heating system is used for heating a preset space;
the soil cold accumulation supercooling circulating system is respectively connected with the PV/T system and the CO 2 Connected with a refrigeration cycle system for use in winterCool in the soil and release from the soil in summer to provide cooling to the PV/T system and CO 2 The refrigeration cycle system performs cooling.
By above the utility model provides a technical scheme is visible, compares with prior art, the utility model provides a carbon dioxide refrigerating system based on cold-storage supercooling in season is striden to photovoltaic light and heat and the environmental energy of having carried on soil cold-storage supercooling technique to make full use of gas cooler production, and the natural cold volume in the cold volume of make full use of running water and the outside ambient air, cooling refrigerant and solar panel have improved whole CO 2 The refrigeration efficiency and the energy efficiency of the refrigeration system are improved, meanwhile, the power generation efficiency of a photovoltaic/photo-thermal (PV/T) system is improved, and the photovoltaic/photo-thermal (PV/T) system can be widely applied to refrigeration and heating integrated application scenes for household, commercial and industrial use, and has great practical significance.
Drawings
Fig. 1 is a working principle diagram of a carbon dioxide refrigerating system based on photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling provided by the utility model;
fig. 2 is a working schematic diagram of the photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling-based carbon dioxide refrigeration system in summer, wherein drawing of components not used is omitted;
fig. 3 is a working schematic diagram of the carbon dioxide refrigeration system based on photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling in winter, wherein drawing of components not used is omitted;
fig. 4 is a schematic diagram of the distribution of the back plate pipeline of the PV/T solar panel in the carbon dioxide refrigeration system based on photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling provided by the present invention;
in the figure, 1 to 14 are respectively a first valve to a fourteenth valve;
20 is a fifteenth valve, 24 is a sixteenth valve, 31 is a seventeenth valve, and 34 is an eighteenth valve;
a nineteenth valve 36, a twentieth valve 37, a twenty-first valve 49, a twenty-second valve 50, and a twenty-third valve 54;
17 is a first three-way valve, 18 is a second three-way valve, 19 is a third three-way valve, 22 is a fourth three-way valve, 23 is a fifth three-way valve, 26 is a sixth three-way valve, 44 is a seventh three-way valve, 45 is an eighth three-way valve, and 48 is a ninth three-way valve;
16 is a water separator; 15 is a water collector; 21 is a water-cooled evaporator;
25 is a first air-cooled evaporator, 32 is a second air-cooled evaporator;
28 is a first CO 2 Low pressure stage compressor, 29 second CO 2 Low pressure stage compressor, 30 is third CO 2 A low pressure stage compressor;
27 is a first expansion valve, 33 is a second expansion valve; 35 is a space hot water supply pump;
38 is the first CO 2 High pressure stage compressor, 39 second CO 2 High pressure stage compressor, 40 third CO 2 A high-pressure stage compressor;
41 is a subcooler; 42 is CO 2 A water-cooled gas cooler; 43 is a CO2 air-cooled gas cooler; 46 is a desuperheater; 47 is tap water pump; 55 is a cooling tower;
51 is a heat storage water tank; 52 is a PV/T solar panel; and 53, a user side water using device.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below with reference to embodiments of the present invention, and it should be understood that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 4, the utility model provides a carbon dioxide refrigerating system based on cold-storage supercooling is striden season to photovoltaic light and heat and soil, including photovoltaic light and heat (PV/T) system, CO 2 A refrigeration cycle system, a heating system (namely a space heating system) and a soil cold accumulation and supercooling cycle system;
PV/T (photovoltaic/photothermal) system, with CO 2 Connected to the refrigeration cycle system for supplying CO 2 The refrigeration cycle system (particularly the compressor therein) provides electrical energy and hot water for the user;
CO 2 a refrigeration cycle system for refrigerating a predetermined space (e.g., a certain building);
a heating system (i.e., a space heating system) for heating a predetermined space (e.g., a certain building);
the soil cold accumulation supercooling circulating system is respectively connected with the PV/T system and the CO 2 The refrigeration cycle system is connected for storing cold in the soil in winter and releasing cold from the soil in summer to power the PV/T system and the CO 2 The refrigeration cycle system performs cooling.
In the present invention, in particular, the PV/T system includes a PV/T solar panel 52, a tap water pump 47, a hot water storage tank 51 and a user side water utilization device 53;
the water inlet of the tap water pump 47 is communicated with the existing tap water pipe network;
a water outlet of the tap water pump 47 is communicated with an inlet of a ninth three-way valve 48;
two outlets of the ninth three-way valve 48 are respectively communicated with an inlet of the twenty-first valve 49 and an inlet of the twenty-second valve 50;
wherein the outlet of the twenty-first valve 49 is connected to CO 2 A first water inlet of a subcooler 41 in the refrigeration cycle system is communicated;
a first water outlet of the subcooler 41, which is in communication with a first water inlet of the PV/T solar panel 52;
it should be noted that the first water inlet and the first water outlet of the subcooler 41 are connected through a separate pipe (specifically, a water pipe 3401) for flowing through the tap water, for example, as shown in fig. 4, the PV/T solar panel 52 includes a back plate 3402, and the water pipe 3401 in the back plate 3402 is used for flowing through the tap water.
The first outlet of the PV/T solar panel 52 is connected to the outlet of the twentieth valve 50 and the CO 2 The water inlets of the de-superheaters 46 in the refrigeration cycle system are communicated;
it should be noted that the first water inlet and the first water outlet of the PV/T solar panel 52 are connected by a separate pipe.
The water outlet of the desuperheater 46 is communicated with the water inlet of the heat storage water tank 51;
the water outlet of the hot water storage tank 51 is communicated with a user side water using device 53.
In particular, the power supply output of the PV/T solar panel 52, and the CO 2 Refrigeration systemFirst CO in the circulating System 2 Low pressure stage compressor 28, second CO 2 Low pressure stage compressor 29 and third CO 2 Low pressure stage compressor 30 and first CO 2 High pressure stage compressor 38, second CO 2 High pressure stage compressor 39 and third CO 2 The high-pressure stage compressors 40 are connected at their electrical inputs for supplying electrical power to these compressors.
Note that the first CO 2 Low pressure stage compressor 28, second CO 2 Low pressure stage compressor 29, third CO 2 The low-pressure stage compressors 30 are compressors connected in parallel.
Thus, based on the above connection, a photovoltaic/thermal (PV/T) system may be formed.
In a concrete implementation, a twentieth valve 54 is arranged on a connecting pipeline between the water outlet of the hot water storage tank 51 and the user-side water consuming device 53.
In a specific implementation, the user-side water consuming device 53 is a device that requires hot water for a user, such as a faucet in a toilet or a kitchen, or other living equipment that requires hot water.
It should be noted that, in the present invention, as shown in fig. 4, the back plate of the PV/T solar panel 52 has two parallel serpentine coils, which do not intersect with each other. The coil pipe is adhered with heat-conducting silica gel, so that the thermal contact resistance between the snakelike coil pipe and the photovoltaic panel can be reduced. One pipe is filled with tap water, and the other pipe is filled with glycol aqueous solution. The two pipelines can cool the PV/T photovoltaic panel simultaneously. It should be noted that, in the present invention, for the PV/T system, the tap water pump 47 is divided into two parts after pumping out the tap water, and the PV/T system specifically includes the following two operation modes:
summer working mode: in summer, the ninth three-way valve 48 controls the twenty-first valve 49 to be opened and the twenty-second valve 50 to be closed, and tap water firstly flows through CO 2 The subcooler 41 and the subcooler 41 of the refrigeration cycle exchange heat, the temperature of the tap water rises after absorbing heat, and then the tap water flows through the pipeline at the back of the PV/T solar panel 52 (namely the water pipeline 3401 in the back plate 3402) to absorb the heat of the PV/T solar panel 52, so that the temperature of the tap water continuously risesHigh, then passes through CO 2 The temperature of the tap water is raised again by the superheater 46 of the refrigeration cycle, and the finally formed hot water enters the hot water storage tank 51 to be stored for subsequent use, so that the heat utilization route is completed.
Working modes in winter: in winter, the twenty-first valve 49 is controlled to be closed by the ninth three-way valve 48, the twentieth valve 50 is controlled to be opened, the tap water enters the superheater 46 after passing through the twenty-second valve 50 after being pumped out, so that the temperature of the tap water is increased, then the tap water enters the heat storage water tank 51 after passing through the superheater 46, and then enters the user side water utilization equipment 53 after passing through the thirteenth valve 54, so that the working process of the whole system is completed.
It should be noted that, in winter, the water-cooled evaporator 21 exchanges heat with soil, and the first air-cooled evaporator 25 exchanges heat with air, so that the refrigeration cycle working medium CO 2 The heat absorbed and released by the desuperheater 46 is absorbed by tap water and stored in the hot water storage tank 51 for heating. The opening and closing of the water-cooled evaporator 21 and the first air-cooled evaporator 25 are selectively controlled by a fifth three-way valve 23. When the soil temperature is higher, open water-cooled evaporator 21 pipeline, when the air temperature is higher, open first air-cooled evaporator 25, when user's life hot water demand is great, both open.
In the utility model, CO is specifically realized 2 A refrigeration cycle system including a first CO 2 Low pressure stage compressor 28, second CO 2 Low pressure stage compressor 29 and third CO 2 Low pressure stage compressor 30 and first CO 2 High pressure stage compressor 38, second CO 2 High pressure stage compressor 39 and third CO 2 High pressure stage compressor 40, CO 2 Air-cooled gas cooler 43, CO 2 A water-cooled gas cooler 42, a desuperheater 46, a subcooler 41, a water-cooled evaporator 21, a first air-cooled evaporator 25 and a second air-cooled evaporator 32;
wherein CO 2 The water cooled gas cooler 42 operates in winter, CO 2 The air-cooled gas cooler 43 operates in summer, and the switching of the two is controlled by the seventh three-way valve 44 and the eighth three-way valve 45.
Wherein the first CO 2 Low pressure stage compressor 28, second CO 2 Low pressure stage compressor 29, first CO 2 High pressure stage compressor 38 and secondary CO 2 The high-pressure stage compressors 39 are all constant-frequency compressors; third CO 2 High pressure stage compressor 40 and third CO 2 The high-pressure stage compressors 40 are all variable-frequency compressors, and can realize continuous adjustment of the power of the compressors.
In the utility model, the range of the application temperature of the subcooler 41 is 5-40 ℃;
CO 2 air-cooled gas cooler 43 and CO 2 The application temperature range of the water-cooled gas cooler 42 is 30-50 ℃;
the application temperature range of the desuperheater 46 is 50-130 ℃.
Wherein, the working medium outlet of the water-cooled evaporator 21 is communicated with an inlet of the sixth three-way valve 26;
the outlet of the sixth three-way valve 26 is connected to the first CO 2 Low pressure stage compressor 28, second CO 2 Low pressure stage compressor 29 and third CO 2 The working medium inlets of the low-pressure stage compressor 30 are communicated;
wherein, the working medium outlet of the first air-cooled evaporator 25 is communicated with the other inlet of the sixth three-way valve 26;
the outlet of the sixth three-way valve 26 and the first CO 2 Low pressure stage compressor 28, second CO 2 Low pressure stage compressor 29 and third CO 2 The working medium inlets of the low-pressure stage compressor 30 are communicated;
first CO 2 Low pressure stage compressor 28, second CO 2 Low pressure stage compressor 29 and third CO 2 Working medium outlet of low-pressure stage compressor 30, and first CO 2 High pressure stage compressor 38, second CO 2 High pressure stage compressor 39 and third CO 2 The working medium inlets of the high-pressure stage compressors 40 are connected;
first CO 2 High pressure stage compressor 38, second CO 2 High pressure stage compressor 39 and third CO 2 The working medium inlet of the high-pressure stage compressor 40 is also communicated with the working medium outlet of the second air-cooled evaporator 32;
first CO 2 High pressure stage compressor 38, second CO 2 High pressure stage compressor 39 and third CO 2 The working medium outlet of the high-pressure stage compressor 40 is communicated with the working medium inlet of the de-superheater 46;
a working medium outlet of the de-superheater 46 is communicated with an inlet of the eighth three-way valve 45;
two outlets of the eighth three-way valve 45 are connected with CO respectively 2 Water cooled gas cooler 42 and CO 2 The inlet of the air-cooled gas cooler 43 is communicated;
an eighth three-way valve 45 for controlling CO 2 Flow direction of working medium to CO 2 Water cooled gas cooler 42 and CO 2 An air-cooled gas cooler 43;
CO 2 water cooled gas cooler 42 and CO 2 An outlet of the air-cooled gas cooler 43 is communicated with an inlet of the seventh three-way valve 44, respectively;
an outlet of the seventh three-way valve 44 is communicated with a working medium inlet of the subcooler 41;
a working medium outlet of the subcooler 41 is connected with an inlet of the second expansion valve 33;
an outlet of the second expansion valve 33 is connected to inlets of the seventeenth valve 31 and the first expansion valve 27, respectively;
the outlet of the seventeenth valve 31 is communicated with the working medium inlet of the air-cooled evaporator 32;
an outlet of the first expansion valve 27 communicates with an inlet of the fifth three-way valve 23;
two outlets of the fifth three-way valve 23 are respectively communicated with an inlet of the sixteenth valve 24 and an inlet of the fifteenth valve 20;
an outlet of the sixteenth valve 24 is communicated with a working medium inlet of the first air-cooled evaporator 25;
the outlet of the fifteenth valve 20 is communicated with the working medium inlet of the water-cooled evaporator 21.
In particular, it should be noted that the water-cooled evaporator 21 is installed in a machine room in a building, and is in contact with soil for absorbing heat in the soil;
in particular, it should be noted that the first air-cooled evaporator 25 is installed on the roof of a building, and is used for exchanging heat with air and absorbing the temperature in the environment; the second air-cooled evaporator 30 is installed on the roof of a building for functioning as a refrigerating system evaporator.
Thus, based on the above connection, one CO can be formed 2 And (4) a refrigeration cycle.
In particular implementation, CO 2 The working medium adopted by the refrigeration cycle system is natural working medium carbon dioxide CO 2 。
It is to be noted that CO 2 The refrigeration cycle comprising CO 2 Evaporator, CO 2 Compressor, CO 2 A gas cooler and two expansion valves. CO2 2 Low temperature and low pressure CO at outlet of evaporator (including water cooled evaporator 21 and first and second air cooled evaporators 25 and 32) 2 Fluid is CO 2 Compressor (first CO) 2 Low pressure stage compressor 28, second CO 2 Low pressure stage compressor 29 and third CO 2 Low pressure stage compressor 30 and first CO 2 High pressure stage compressor 38, second CO 2 High pressure stage compressor 39 and third CO 2 High pressure stage compressor 40) and then compressed to high temperature and pressure CO 2 The fluid then enters the desuperheater, the chiller (each containing a CO2 air cooled gas chiller 43 2 The water-cooled gas cooler 42 is adjusted by a seventh three-way valve 44 and an eighth three-way valve 45 during refrigeration to make the working medium flow through CO 2 The air-cooled gas cooler 43) and the subcooler exchange heat with heat exchange fluid, then flow through the second expansion valve 33 and the first expansion valve 27 for throttling and pressure reduction, and then evaporation and heat absorption are carried out in the water-cooled evaporator 21, the first air-cooled evaporator 25 and the second air-cooled evaporator 32 to complete CO 2 And (4) a refrigeration cycle.
In the present invention, a heating system (i.e. a space heating system) specifically includes a space heat supply water pump 35;
a water inlet of the space hot water supply pump 35 is connected with a water return outlet of a space heating pipeline in the preset space;
the water outlet of the space hot water supply pump 35 is connected with the inlet of a nineteenth valve 36;
outlet of nineteenth valve 36 and CO 2 CO in refrigeration cycle system 2 The water-cooled gas cooler 42 is connected with the water inlet;
CO 2 the water outlet of the water-cooled gas cooler 42 is connected to the water inlet of a space heating pipe (e.g., a heating pipe in a building, such as an existing heating pipe) in a predetermined space.
Therefore, based on the above connection manner, the space heating process can be completed.
The utility model discloses in, space supplies hot water pump 35 for go into (i.e. take out) the heating system with the circulating water, pump.
It should be noted that the heat exchange fluid in the heating system is water.
It should be noted that, in the present invention, the heating system (i.e., the space heating system) includes the following operation modes:
in winter, the space heating water pump 35 pumps the return water of the space heating pipeline, and the return water enters the CO after passing through the nineteenth valve 36 2 Water cooled gas cooler 42, then return water to the space heating line in CO 2 After the water-cooled gas cooler 42 is heated, CO is removed 2 The return water (i.e., hot water) of the heated space heating pipeline flowing out of the water-cooled gas cooler 42 enters the existing space heating pipeline again to complete the heating process.
The utility model discloses in, in the concrete realization, soil cold-storage supercooling circulating system specifically is arranged in to PV/light and heat (PV/T) solar panel 52 and CO in the system 2 The refrigerant at the outlet of the subcooler 41 in the refrigerating cycle system is subjected to a cooling operation;
the soil cold accumulation supercooling circulating system specifically comprises a water separator 16, a water collector 15 and a cold compensation tower 55,
the inlet of the water separator 16 is connected with the outlet of the sixth valve 6;
the outlet of the water separator 16 is respectively connected with the inlets of the eighth valve 8, the tenth valve 10, the twelfth valve 12 and the fourteenth valve 14;
the outlet of the eighth valve 8 is connected with the inlet of the seventh valve 7 through the first U-shaped borehole heat exchanger 101;
the outlet of the seventh valve 7 is connected with the inlet of the water collector 15;
the outlet of the tenth valve 10 is connected to the inlet of the ninth valve 9 via a second U-shaped borehole heat exchanger 102;
the outlet of the ninth valve 9 is connected with the inlet of the water collector 15;
an outlet of the twelfth valve 12 is connected to an inlet of the eleventh valve 11 via a third U-shaped borehole heat exchanger 103;
the outlet of the eleventh valve 11 is connected with the inlet of the water collector 15;
the outlet of the fourteenth valve 14 is connected to the inlet of the thirteenth valve 13 via a fourth U-shaped borehole heat exchanger 104;
the outlet of the thirteenth valve 13 is connected with the inlet of the water collector 15;
it should be noted that the first U-shaped borehole heat exchanger, the second U-shaped borehole heat exchanger, the third U-shaped borehole heat exchanger, and the fourth U-shaped borehole heat exchanger are all U-shaped heat exchangers, and are all buried in the soil 100.
The outlet of the water collector 15 is connected with the inlet of the fifth valve 5;
the outlet of the fifth valve 5 is connected with the inlet of the first three-way valve 17;
two outlets of the first three-way valve 17 are respectively connected with an inlet of the first valve 1 and an inlet of the third valve 3;
the outlet of the first valve 1 is connected with the inlet of the cooling tower 55 (namely a cooling tower);
the outlet of the cold compensating tower 55 is connected with the inlet of the second valve 2;
the outlet of the second valve 2 is connected to an inlet of a second three-way valve 18;
the cooling tower 55 is disposed in an outdoor natural environment;
the outlet of the third valve 3 is connected with the inlet of a third three-way valve 19;
two outlets of the third three-way valve 19 are connected with CO respectively 2 Second water inlet of subcooler 41 and water inlet of water-cooled evaporator 21 in refrigeration cycle systemConnecting;
a second water outlet of the subcooler 41 is connected with a second water inlet of a PV/T solar panel 52 in the PV/T system;
a second outlet of the PV/T solar panel 52 connected to an inlet of a twentieth valve 37;
the outlet of the twentieth valve 37 is connected to an inlet of the fourth three-way valve 22;
the other inlet of the fourth three-way valve 22 is connected with the water outlet of the water-cooled evaporator 21;
it should be noted that the water inlet and the water outlet of the water-cooled evaporator 21 are communicated with each other through separate pipes.
The outlet of the fourth three-way valve 22 is connected with the inlet of the fourth valve 4;
the outlet of the fourth valve 4 is connected with the other inlet of the second three-way valve 18;
the outlet of the second three-way valve 18 is connected to the inlet of the water separator 16.
Therefore, based on the connection mode, the cold accumulation and supercooling circulation of the soil can be completed.
It should be noted that in the present invention, a plurality of U-shaped borehole heat exchangers, such as the first U-shaped borehole heat exchanger, the second U-shaped borehole heat exchanger, the third U-shaped borehole heat exchanger, and the fourth U-shaped borehole heat exchanger, are used for exchanging energy with soil, supplying heat in winter by using heat in soil, and storing cold energy in air in soil.
The utility model discloses in, the after cooling tower 55 is installed on building roof for with the air heat transfer in winter, absorb the cold energy in the air, finally store in soil.
The medium in the soil cold accumulation supercooling circulating system is a glycol aqueous solution. The solute of the ethylene glycol aqueous solution is ethylene glycol, and the solvent is water. In the utility model, the volume concentration of the ethylene glycol aqueous solution is 20% -45%, the initial solidification temperature is-10 to-30 ℃, and the density range is as follows: 1025-1060 kg/m 3 。
The utility model discloses in, the ethylene glycol aqueous solution can prevent that the cold-storage that water freezes in winter and leads to can't go on.
It should be noted that the second water inlet and the second water outlet of the subcooler 41 are connected through a separate pipe (i.e. the ethylene glycol aqueous solution pipe 3403 in the back plate 3402 of the PV/T solar panel 52) for flowing through the working medium, i.e. the ethylene glycol aqueous solution, in the soil cold storage and subcooling cycle system, for example, as shown in fig. 4, the PV/T solar panel 52 includes a back plate 3402, and the ethylene glycol aqueous solution pipe 3403 in the back plate 3402 for flowing through the ethylene glycol aqueous solution in the soil cold storage and subcooling cycle system.
It should be noted that the utility model discloses in, soil cold-storage supercooling circulating system, including following soil cold-storage supercooling mode of operation:
winter cold accumulation working mode: when cold accumulation is performed in winter, the eighteenth valve 34 and the twentieth valve 37 are closed, the other valves are opened, the cold compensation tower 55 (specifically, the ethylene glycol aqueous solution therein) absorbs cold energy in the outdoor natural environment where the cold compensation tower is installed, the cold energy is stored in the soil 100 through a pipeline (specifically, through the water separator 16, the first U-shaped buried pipe heat exchanger, the second U-shaped buried pipe heat exchanger, the third U-shaped buried pipe heat exchanger and the fourth U-shaped buried pipe heat exchanger), and natural cold energy is compensated for the soil 100;
the ethylene glycol aqueous solution in the cold-supplementing tower 55 is used as a secondary refrigerant in the soil cold accumulation and supercooling circulation system, is cooled by outdoor air, and then sequentially enters four U-shaped buried pipe heat exchangers, namely the first U-shaped buried pipe heat exchanger, the second U-shaped buried pipe heat exchanger, the third U-shaped buried pipe heat exchanger and the fourth U-shaped buried pipe heat exchanger, the secondary refrigerant flows in the first U-shaped buried pipe heat exchanger, the second U-shaped buried pipe heat exchanger, the third U-shaped buried pipe heat exchanger and the fourth U-shaped buried pipe heat exchanger, and the cold energy is transmitted to the surrounding soil 100, so that the purpose of storing the natural cold energy in the soil 100 is achieved. The coolant with the increased temperature is cooled by the cooling tower 55 to complete the whole cycle.
Transition season working mode: in the transition season (not summer and not winter), the cold accumulation system (namely the soil cold accumulation supercooling circulating system) is stopped.
Summer cooling mode: referring to fig. 2, in the summer cooling-releasing mode, the first valve 1 and the second valve 2 are closed, and the remaining valves are opened, so that the coolant (i.e., coolant) having a relatively high temperature is suppliedEthylene glycol aqueous solution) flows in the first U-shaped borehole heat exchanger, the second U-shaped borehole heat exchanger, the third U-shaped borehole heat exchanger and the fourth U-shaped borehole heat exchanger, the temperature of the coolant is reduced after heat is released to the surrounding cold-storage soil 100, and then the coolant passes through the subcooler 41 and the PV/T solar panel 52 for cooling CO in the subcooler 41 2 Fluid and a PV/T solar panel 52, and then the elevated temperature coolant returns into the four U-shaped borehole heat exchangers, first, second, third, and fourth, to exchange heat with the surrounding soil 100 to cool and complete the entire cycle.
It should be noted that after the end of the cooling release in summer, the soil temperature is basically recovered through the transition period, and the cold accumulation in winter continues in the second year, and the cooling is taken in summer, so that the sustainable operation of the system is ensured.
The utility model discloses in, on specifically realizing, the utility model provides a pair of CO based on photovoltaic light and heat and soil cold-storage supercooling 2 The refrigerating system comprises a PV/T system (namely a solar PV/T component), a refrigerating cycle system, a heating system and a soil cold accumulation supercooling cycle. Wherein, the refrigerant of the refrigeration cycle system is natural working medium CO 2 The soil cold accumulation supercooling medium is a glycol aqueous solution, and the heat exchange fluid of the heating system is water.
In the utility model, the water collector 15 is used for collecting glycol aqueous solution in different dispersed buried pipes;
the water separator 16 is used for averagely distributing the ethylene glycol aqueous solution to different buried pipes;
the cooling tower 55 is used for absorbing the cold energy in the air and storing the cold energy in the soil 100;
the water-cooled evaporator 21 is used for exchanging heat with soil in winter, so that the refrigerating working medium absorbs the heat of the secondary refrigerant through the water-cooled evaporator, and absorbs the heat in the low-level heat source air when the heat load is large, thereby meeting the requirement of large heat supply load;
the air-cooled evaporator 25 is used for exchanging heat with air in winter to enable a refrigeration working medium to absorb heat in the air, and when the heat load is larger, the heat in the low-level heat source air is absorbed to meet the requirement of larger heat supply load;
the air-cooled evaporator 32 is used as a refrigeration system evaporator and is used for meeting the refrigeration requirements of users;
first CO 2 Low pressure stage compressor 28, second CO 2 Low pressure stage compressor 29 and third CO 2 Low pressure stage compressor 30 and first CO 2 High pressure stage compressor 38, second CO 2 High pressure stage compressor 39 and third CO 2 The high-pressure stage compressor 40 is used for compressing the working medium to raise the temperature and the pressure of the working medium;
go over heater 39 for realize the heat transfer of working medium and running water, the working medium temperature reduces, and the running water absorbs the heat, stores in the heat storage jar, is used for life hot water and heat load demand.
And the gas cooler 38 is used for taking away the heat of the refrigerating working medium and is used for space heating in winter.
And the subcooler 37 is used for subcooling the working medium by the glycol solution and the cooling water, so that throttling loss is reduced.
In the utility model, in concrete realization, the utility model discloses a CO 2 The refrigerating system adopts an integrated refrigerating and heating mode of cross-season cold accumulation and release combined cooling, in summer, the cold energy in the soil is extracted by the secondary refrigerant, and the secondary refrigerant and the tap water firstly pass through the subcooler 41 and the back plate of the PV/T solar panel 52 to carry out CO cooling on the outlet of the gas cooler 2 The fluid and the back plate of the PV/T solar panel 52 are cooled, the cooling capacity of the soil and the tap water is utilized in a segmented and stepped manner, and the CO is increased 2 The energy efficiency of the refrigeration system and the solar power generation efficiency, then, the secondary refrigerant enters the soil to continuously absorb cold energy, and the tap water enters the superheater 46 to be secondarily heated and then supplies heat.
In winter, the natural cold energy of the air is stored in the soil through the cold supplement tower and is used for crossing seasons in summer. Tap water is heated by the superheater 46 to produce hot water; CO2 2 The water-cooled gas cooler 42 is used to heat the circulating water for heating. Solar photovoltaic power generation for CO 2 The compressor in the refrigeration cycle supplies power.
To say thatIt is clear that, for the present invention, the CO passing through the refrigerating cycle system 2 CO at the outlet of the gas cooler 2 The fluid is supercooled, so that CO can be reduced to a great extent 2 Throttling loss of refrigeration cycle and CO increase 2 The efficiency of the refrigeration system.
It should be noted that, as solar energy is a clean renewable energy source, the temperature of the photovoltaic panel can be significantly increased during the power generation process, which leads to the decrease of the efficiency. A pipeline is laid under the plate, cooling fluid such as water flows in the pipeline, the photovoltaic plate can be cooled, meanwhile, the heat of the photovoltaic plate can be absorbed, and hot water is produced for use. Meanwhile, in a refrigeration system, the photovoltaic panel is adopted to generate electricity to supply power to the compressor, which is also a mode for reducing energy consumption, and the gas cooler can generate a large amount of heat in the working process, and the energy utilization rate of the system can be improved by recycling the heat.
The application of the natural cold source is an effective way for realizing energy conservation and emission reduction, and the natural cold source is used as a pollution-free renewable energy source and has considerable use value. Natural cold energy also plays an important role in the fields of data center cooling and the like. By utilizing the thermal inertia of the soil, the cold energy in winter is stored and utilized in different seasons, the low-carbon sustainable development can be promoted, and the problem of unbalanced supply and demand of the natural cold energy in time is solved.
Compared with the prior art, the utility model provides a carbon dioxide refrigerating system based on cold-storage subcooling in season is striden to photovoltaic light and heat and soil has following beneficial effect:
1. to the utility model discloses, through cold volume in extracting soil and through the running water in summer, carry out the subcooling to the refrigerant of gas cooler exit simultaneously to further cool off PV/T solar panel 52's backplate, promote CO in coordination 2 Refrigeration system and solar power generation efficiency.
2. To the utility model discloses, the soil cold-storage can be realized striding season cold-storage and cold release, realizes winter natural cold energy, can be used for in summer to CO 2 Gas cooler, desuperheater, high pressure stage compressor outlet fluid and cooling of the PV/T solar panels 52.
3. For bookUtility model, the glycol solution for extracting cold from soil in summer can be used for CO 2 The gas cooler, de-superheater, high pressure stage compressor outlet fluid and PV/T assembly (i.e., PV/T solar panel 52) are continuously cooled, allowing for a cascade utilization of cold energy.
4. To the utility model discloses, retrieve PV/T subassembly (being PV/T solar panel 52) and gas cooler in summer, remove the heat dissipation capacity of over heater, subcooler to heating life hot water, simultaneously, retrieve the heat dissipation capacity of removing the over heater in winter, with heating life hot water, improved energy utilization. In case of insufficient heating quantity in winter, the heat quantity released to the soil in summer can be extracted from the soil through the water-cooled evaporator, and the heat quantity is absorbed from the air through the air-cooled evaporator and is used for heating.
In concrete implementation, the water-cooled evaporator 21 is installed in a machine room in a building and is used for absorbing heat in soil through refrigerant.
5. To the utility model discloses, based on photovoltaic light and heat and soil cold-storage supercooled CO 2 The refrigerant of the refrigerating system is natural working medium CO 2 . ODP (ozone harm degree) is 0, GWP (global warming potential) is 1, and the ozone inhibitor can not be decomposed under high temperature, is safe, nontoxic and environment-friendly.
6. The utility model carries the PV/T solar component, which can be CO through solar power generation 2 The compressor of the refrigerating system provides electric energy, and the solar panel can absorb heat and store and utilize the heat through water, so that the CO can be reduced 2 The energy consumption of the refrigerating system can provide hot water for users, the solar energy is greatly utilized, and the carbon emission is reduced from the side.
7. The utility model discloses can realize year-round cooling and heat supply through one set of device, system integration degree is high, but the investment cost of greatly reduced system.
To sum up, compare with prior art, the utility model provides a carbon dioxide refrigerating system based on cold-storage subcooling is striden with soil to photovoltaic light and heat, its design science has carried on soil cold-storage subcooling technique to heat and environmental energy that make full use of gas cooler producedAnd the cooling agent and the solar panel are cooled by fully utilizing the cooling capacity of tap water and the natural cooling capacity in the external ambient air, so that the whole CO is improved 2 The refrigeration efficiency and the energy efficiency of the refrigeration system are improved, the power generation efficiency of a photovoltaic/photothermal (PV/T) system is improved, the photovoltaic/photothermal (PV/T) system can be widely applied to refrigeration and heating integrated application scenes for household, commercial and industrial use, and the photovoltaic/photothermal (PV/T) system has great practical significance.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (6)
1. A carbon dioxide refrigerating system based on photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling is characterized by comprising a PV/T system and CO 2 The system comprises a refrigeration cycle system, a heating system and a soil cold accumulation and supercooling cycle system;
PV/T system, with CO 2 Connected to the refrigeration cycle system for supplying CO 2 The refrigeration cycle system provides electric energy and provides hot water for users;
CO 2 a refrigeration cycle system for refrigerating a preset space;
the heating system is used for heating a preset space;
the soil cold accumulation supercooling circulating system is respectively connected with the PV/T system and the CO 2 The refrigeration cycle system is connected for storing cold in the soil in winter and releasing cold from the soil in summer to power the PV/T system and the CO 2 The refrigeration cycle system performs cooling.
2. The photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling-based carbon dioxide refrigerating system as claimed in claim 1, wherein the PV/T system comprises a PV/T solar panel (52), a tap water pump (47), a heat storage water tank (51) and a user side water device (53);
a water inlet of the tap water pump (47) is communicated with the existing tap water pipe network;
a water outlet of the tap water pump (47) is communicated with an inlet of the ninth three-way valve (48);
an outlet of the ninth three-way valve (48) is respectively communicated with an inlet of the twenty-first valve (49) and an inlet of the twenty-second valve (50);
wherein the outlet of the twenty-first valve (49) is connected to CO 2 A first water inlet of a subcooler (41) in the refrigeration cycle system is communicated;
the first water outlet of the subcooler (41) is communicated with the first water inlet of the PV/T solar panel (52);
a first water outlet of the PV/T solar panel (52) is respectively connected with an outlet of the twenty-second valve (50) and the CO 2 The water inlets of the de-superheaters (46) in the refrigeration cycle system are communicated;
a water outlet of the de-superheater (46) is communicated with a water inlet of the heat storage water tank (51);
the water outlet of the heat storage water tank (51) is communicated with a user side water device (53).
3. The photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling-based carbon dioxide refrigeration system as claimed in claim 2, wherein the power supply output end of the PV/T solar panel (52) and the first CO are connected 2 Low pressure stage compressor (28), second CO 2 Low pressure stage compressor (29) and third CO 2 A low-pressure stage compressor (30) and a first CO 2 High pressure stage compressor (38), second CO 2 High pressure stage compressor (39) and third CO 2 The electricity input ends of the high-pressure stage compressors (40) are connected.
4. The photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling carbon dioxide refrigeration system as claimed in claim 1, wherein the CO is CO 2 A refrigeration cycle system including a first CO 2 Low pressure stage compressor (28), second CO 2 Low pressure stage compressor (29) and third CO 2 Low pressure stage compressor (30) and first CO 2 High pressure stage compressor (38), second CO 2 High pressure stage compressor (39) and third CO 2 High pressure stage compressor (40), CO 2 Air-cooled gas cooler (43)、CO 2 A water-cooled gas cooler (42), a desuperheater (46), a subcooler (41), a water-cooled evaporator (21), a first air-cooled evaporator (25) and a second air-cooled evaporator (32);
wherein, the working medium outlet of the water-cooled evaporator (21) is communicated with one inlet of the sixth three-way valve (26);
the outlet of the sixth three-way valve (26) is connected with the first CO respectively 2 Low pressure stage compressor (28), second CO 2 Low pressure stage compressor (29) and third CO 2 The working medium inlets of the low-pressure stage compressors (30) are communicated;
the working medium outlet of the first air-cooled evaporator (25) is communicated with the other inlet of the sixth three-way valve (26);
an outlet of the sixth three-way valve (26) and the first CO 2 Low pressure stage compressor (28), second CO 2 A low pressure stage compressor (29) and a third CO 2 The working medium inlets of the low-pressure stage compressor (30) are communicated;
first CO 2 Low pressure stage compressor (28), second CO 2 Low pressure stage compressor (29) and third CO 2 Working medium outlet of low-pressure stage compressor (30) and first CO 2 High pressure stage compressor (38), second CO 2 A high pressure stage compressor (39) and a third CO 2 The working medium inlets of the high-pressure stage compressors (40) are connected;
first CO 2 High pressure stage compressor (38), second CO 2 High pressure stage compressor (39) and third CO 2 The working medium inlet of the high-pressure stage compressor (40) is also communicated with the working medium outlet of the second air-cooled evaporator (32);
first CO 2 High pressure stage compressor (38), second CO 2 High pressure stage compressor (39) and third CO 2 The working medium outlet of the high-pressure stage compressor (40) is communicated with the working medium inlet of the de-superheater (46);
a working medium outlet of the superheater (46) is communicated with an inlet of an eighth three-way valve (45);
two outlets of the eighth three-way valve (45) are respectively connected with the CO 2 The water-cooled gas cooler (42) is communicated with the inlet of the CO2 air-cooled gas cooler (43);
eighth IIIA through valve (45) for controlling CO 2 Flow direction of working medium to CO 2 Water cooled gas cooler (42) and CO 2 An air-cooled gas cooler (43);
CO 2 water cooled gas cooler (42) and CO 2 The outlet of the air-cooled gas cooler (43) is respectively communicated with the inlet of a seventh three-way valve (44);
an outlet of the seventh three-way valve (44) is communicated with a working medium inlet of the subcooler (41);
a working medium outlet of the subcooler (41) is connected with an inlet of the second expansion valve (33);
an outlet of the second expansion valve (33) is connected to an inlet of the seventeenth valve (31) and an inlet of the first expansion valve (27), respectively;
the outlet of the seventeenth valve (31) is communicated with the working medium inlet of the air-cooled evaporator (32);
the outlet of the first expansion valve (27) is communicated with the inlet of the fifth three-way valve (23);
two outlets of the fifth three-way valve (23) are respectively communicated with an inlet of the sixteenth valve (24) and an inlet of the fifteenth valve (20);
an outlet of the sixteenth valve (24) is communicated with a working medium inlet of the first air-cooled evaporator (25);
and the outlet of the fifteenth valve (20) is communicated with the working medium inlet of the water-cooled evaporator (21).
5. The photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling carbon dioxide refrigerating system according to claim 1, wherein the heating system specifically comprises a space heat supply water pump (35);
a water inlet of the space hot water supply pump (35) is connected with a water return outlet of a space heating pipeline in a preset space;
a water outlet of the space hot water supply pump (35) is connected with an inlet of a nineteenth valve (36);
the outlet of the nineteenth valve (36) is connected with CO 2 CO in refrigeration cycle system 2 The water inlet of the water-cooled gas cooler (42) is connected;
CO 2 water outlet of water-cooled gas cooler (42) and pre-coolerThe water inlets of the space heating pipelines in the space are connected.
6. The photovoltaic photo-thermal and soil cross-season cold accumulation and supercooling-based carbon dioxide refrigerating system as claimed in any one of claims 1 to 5, wherein the soil cold accumulation and supercooling circulation system is particularly used for cooling operation of refrigerants at outlets of a PV/T solar panel (52) and a subcooler (41) in the PV/T system;
a soil cold accumulation and supercooling circulating system specifically comprises a water separator (16), a water collector (15) and a cold compensating tower (55),
the inlet of the water separator (16) is connected with the outlet of the sixth valve (6);
the outlet of the water separator (16) is respectively connected with the inlets of the eighth valve (8), the tenth valve (10), the twelfth valve (12) and the fourteenth valve (14);
an outlet of the eighth valve (8) is connected with an inlet of the seventh valve (7) through the first U-shaped borehole heat exchanger (101);
the outlet of the seventh valve (7) is connected with the inlet of the water collector (15);
the outlet of the tenth valve (10) is connected with the inlet of the ninth valve (9) through a second U-shaped borehole heat exchanger (102);
the outlet of the ninth valve (9) is connected with the inlet of the water collector (15);
the outlet of the twelfth valve (12) is connected with the inlet of the eleventh valve (11) through a third U-shaped buried pipe heat exchanger (103);
an outlet of the eleventh valve (11) is connected with an inlet of the water collector (15);
an outlet of the fourteenth valve (14) is connected to an inlet of the thirteenth valve (13) through a fourth U-shaped borehole heat exchanger (104);
the outlet of the thirteenth valve (13) is connected with the inlet of the water collector (15);
the first U-shaped buried pipe heat exchanger, the second U-shaped buried pipe heat exchanger, the third U-shaped buried pipe heat exchanger and the fourth U-shaped buried pipe heat exchanger are buried in soil (100);
the outlet of the water collector (15) is connected with the inlet of the fifth valve (5);
the outlet of the fifth valve (5) is connected with the inlet of the first three-way valve (17);
two outlets of the first three-way valve (17) are respectively connected with an inlet of the first valve (1) and an inlet of the third valve (3);
the outlet of the first valve (1) is connected with the inlet of the cold-supplement tower (55);
the outlet of the cold compensating tower (55) is connected with the inlet of the second valve (2);
the outlet of the second valve (2) is connected with one inlet of a second three-way valve (18);
the cooling tower (55) is arranged in the outdoor natural environment;
the outlet of the third valve (3) is connected with the inlet of a third three-way valve (19);
two outlets of the third three-way valve (19) are respectively connected with CO 2 A second water inlet of a subcooler (41) in the refrigeration cycle system is connected with a water inlet of a water-cooled evaporator (21);
the second water outlet of the subcooler (41) is connected with the second water inlet of a PV/T solar panel (52) in the PV/T system;
a second outlet of the PV/T solar panel (52) connected to an inlet of a twentieth valve (37);
the outlet of the twentieth valve (37) is connected to an inlet of the fourth three-way valve (22);
the other inlet of the fourth three-way valve (22) is connected with the water outlet of the water-cooled evaporator (21);
the outlet of the fourth three-way valve (22) is connected with the inlet of the fourth valve (4);
the outlet of the fourth valve (4) is connected with the other inlet of the second three-way valve (18);
the outlet of the second three-way valve (18) is connected with the inlet of the water separator (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221747088.XU CN217737578U (en) | 2022-07-06 | 2022-07-06 | Carbon dioxide refrigerating system based on photovoltaic photo-thermal and soil cross-season cold accumulation supercooling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221747088.XU CN217737578U (en) | 2022-07-06 | 2022-07-06 | Carbon dioxide refrigerating system based on photovoltaic photo-thermal and soil cross-season cold accumulation supercooling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217737578U true CN217737578U (en) | 2022-11-04 |
Family
ID=83843723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221747088.XU Expired - Fee Related CN217737578U (en) | 2022-07-06 | 2022-07-06 | Carbon dioxide refrigerating system based on photovoltaic photo-thermal and soil cross-season cold accumulation supercooling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217737578U (en) |
-
2022
- 2022-07-06 CN CN202221747088.XU patent/CN217737578U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101333143B1 (en) | The regenrative air conditioning apparatust | |
| CN100394115C (en) | Heat pipe cold accumulating air conditioning device | |
| CN206670103U (en) | A kind of cooling unit with auxiliary cold source | |
| CN105222404A (en) | One utilizes solar energy-air energy heat pump | |
| CN105318466A (en) | Heat storage type air source heat pump water cooling and heating system and operation method thereof | |
| CN102937315A (en) | Refrigeration and cold accumulation system | |
| CN113669817A (en) | Millet electricity ice cold-storage and heat accumulation economic benefits and social benefits system | |
| CN102705927B (en) | A kind of ice conserve cold accumulation of heat super low temperature heat pump air-conditioning | |
| CN110118448A (en) | Heat storage and cold accumulation type combustion gas assists solar absorption ammonium hydroxide cold supply system | |
| CN211695491U (en) | Energy supply system combining area distributed energy system and lake water source heat pump | |
| CN103185419A (en) | Ice slurry cold water heat pump unit | |
| CN111219906A (en) | Energy supply system combining area distributed energy system and lake water source heat pump | |
| CN1137359C (en) | Lithium bromide absorption type refrigerator suitable for large temp differnece and able to fully utilize energy | |
| CN113915794A (en) | Refrigeration and heating method of multi-energy complementary refrigeration/heating energy storage system | |
| CN104633977A (en) | Multipurpose energy balance unit | |
| CN200946946Y (en) | Combined phase change energy-storing type cold-heat exchange system | |
| CN217737578U (en) | Carbon dioxide refrigerating system based on photovoltaic photo-thermal and soil cross-season cold accumulation supercooling | |
| CN201289172Y (en) | Water cold storage air conditioner energy-conserving system | |
| CN109282397B (en) | Novel energy storage air conditioning device and method based on air compression refrigeration cycle | |
| CN207065925U (en) | Cogeneration of heat and power residual heat integrative utilizes energy conserving system | |
| CN111750418A (en) | Heat pipe type photovoltaic photo-thermal module-heat pump-phase change material coupling system and method | |
| CN215982974U (en) | Millet electricity ice cold-storage and heat accumulation economic benefits and social benefits system | |
| CN201497255U (en) | Solar backheating type sodium thiocyanate-ammonia absorption refrigerator air conditioner and heat pump device | |
| CN204006448U (en) | The full Air Conditioning System with Heat of phase-transition heat-storage | |
| CN115031432A (en) | Carbon dioxide refrigerating system based on photovoltaic photo-thermal and soil cross-season cold accumulation supercooling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221104 |