CN105174860A - High thermal conductive cementing material capable of enhancing heat exchange performance of heat exchange system of floor heating - Google Patents
High thermal conductive cementing material capable of enhancing heat exchange performance of heat exchange system of floor heating Download PDFInfo
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- CN105174860A CN105174860A CN201510519263.8A CN201510519263A CN105174860A CN 105174860 A CN105174860 A CN 105174860A CN 201510519263 A CN201510519263 A CN 201510519263A CN 105174860 A CN105174860 A CN 105174860A
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Abstract
The invention discloses a high thermal conductive cementing material capable of enhancing the heat exchange performance of the heat exchange system of floor heating. The cementing material is composed of the following components by weight: 100 grams of cement, 50 to 200 grams of steel slag or copper mine slag, 150 to 300 grams of quartz sand, 0.8 to 3.0 grams of antifoaming agent, and 1.2 to 3.6 grams of water reducer. On the construction site, water accounting for 40 to 50% of the total weight of cement and steel slag/copper mine slag is added, and then the mixture is evenly stirred and poured into drill holes. The provided cementing material has the advantages of high thermal conductivity and good workability, can expand slightly, and thus can fully fill the drill holes. So that the heat exchange pipes can be tightly combined with the rock stratum, and the heat exchange performance is enhanced. The high thermal conductive cementing material can effectively protect heat exchange pipes from underground water corrosion, thus the service life of heat exchange pipes is prolonged, and the system operation risk is reduced. Furthermore, the cementing material has the advantages of low price, long service life, easily-available raw materials, and no pollution to environment.
Description
Technical field
The invention belongs to building material technical field, be specifically related to a kind of high-heat-conductivity glue gel material being applied to deep geothermal heat exploitation heat-exchange system enhancing underground heat heat-exchange system heat-exchange capacity.
Background technology
Because deep geothermal resources has, heat storage capacity is large, Heat stability is good, environmental protection and energy saving, the plurality of advantages such as renewable, it develops the concern being subject to everybody gradually.China at present geothermal utilization, to be directly utilized as master, is auxiliary with indirect utilization.Direct utilization is recovery of subterranean thermal water utilization underground heat, and indirect utilization is, by heat-exchanger rig, Geothermal energy is taken out utilization, and from long term growth, directly utilizing is unsustainable underground heat exploitation Land use systems; Indirect utilization is continuable underground heat exploitation Land use systems.Indirect utilization is to underground drilling deep-well, running casing in deep-well, outer for pipe Geothermal energy is exchanged on working cycle medium by tube wall heat exchange, is exported by heat energy finally by circulatory mediator, and backfill and well cementation are the important steps in this system construction process.The packing material of backfill between heat exchange pipeline and boring formation wall, be used for stable heat exchange pipeline, strengthen heat exchange pipeline and the heat exchange around between rock stratum, prevent the surface water from permeating downwards, prevent water Cross slot interference between the aqueous stratum of each rock stratum and pollution.There is no the specific aim packing material for deep geothermal heat heat exchange pipeline system at present.Adopt the packing material that thermal conductivity is bad and contraction is dry and cracked will increase the thermal resistance in holing, reduce heat and heat exchange efficiency; If do not backfilled, pipeline is outer will be full of static water, and the thermal conductivity of stationary water is very little, only has 0.60W/m.K, and the existence of water simultaneously also can corrosion pipeline, shortens the life-span of pipeline.The existence of these unfavorable factors will cause the investment of system to increase, and the risk of system cloud gray model increases, the lost of life of heat-exchange system.
Summary of the invention
The object of this invention is to provide and a kind of there is the functional and high-heat-conductivity glue gel material of the enhancing underground heat heat-exchange system exchange capacity of non-shrinking a kind of deep geothermal heat interchanger well cementation and backfill such as thermal conductivity, workability, impermeability; adopt this material by the exchange capability of heat of enhancing deep geothermal heat system, protection heat exchange pipeline, extend the heat exchange pipeline life-span; thus realize reducing the investment of deep geothermal heat interchanger, enhance one's market competitiveness.
Technical solution of the present invention is: a kind of high-heat-conductivity glue gel material strengthening underground heat heat-exchange system heat-exchange capacity, comprises cement, slag or Copper Slag, quartz sand, defoamer and water reducer, and the quality proportioning of each component is:
Cement: 100 grams
Slag or Copper Slag: 50 ~ 200 grams
Quartz sand: 150 ~ 300 grams
Defoamer: 0.8 ~ 3.0 gram
Water reducer: 1.2 ~ 3.6 grams
Defoamer is silicone antifoam agent, and water reducer is polycarboxylate water-reducer.
Strengthen a high-heat-conductivity glue gel material for underground heat heat-exchange system heat-exchange capacity, described each constituent mass proportioning is:
Cement: 100 grams
Slag or Copper Slag: 100 ~ 150 grams
Quartz sand: 200 ~ 250 grams
Defoamer: 1.1 ~ 2.5 grams
Water reducer: 1.6 ~ 3.0 grams
The specific surface area of slag is 400 ~ 500m
2/ kg.
The specific surface area of Copper Slag is 250 ~ 450m
2/ kg.
Slag or Copper Slag can be used alone, and also slag and Copper Slag can be mixed to form new compound material with arbitrary proportion and use.
Add the water of cement and slag (or Copper Slag) total mass 40 ~ 50% in this material, injection hole after stirring.
First the present invention's said high-heat-conductivity glue gel material is a kind of heat transfer material strengthening heat conduction, and have excellent heat conductivility, namely thermal conductivity is higher; Next is a kind of well cementation protecting materials, has good serviceability, and as mobility, water-retentivity, intensity, impermeability and swelling property etc., the contact of isolated heat exchange pipeline and water, prevents the corrosion damage of heat exchange pipeline.
The present invention has considered the factors such as thermal conductive resin, workability, intensity and the economy that high-heat-conductivity glue gel material should have, and by testing each constituent mass ratio optimized, makes a concrete analysis of as follows:
Cement is a kind of inorganic coagulation material, be combined with water by generation hydration reaction, harden after produce intensity, by cemented together for each for high-heat-conductivity glue gel material component, and heat exchange pipeline and hole wall being closely linked, is the basic substance of the said high-heat-conductivity glue gel material of the present invention.
Slag is a kind of gelling material with lateral reactivity, can aquation produce intensity under the condition of alkali-activated carbonatite, cementing with each component of high-heat-conductivity glue gel material; In slag, there is more metallic substance simultaneously, in the slag that magnetic separation is discharged, all iron content is 15 ~ 20%, the existence of iron will significantly strengthen the capacity of heat transmission of high-heat-conductivity glue gel material, cementing solidify after high-heat-conductivity glue gel material thermal conductivity higher than normal concrete or mortar; In addition contain a certain amount of f-CaO (free calcium oxide) and MgO in slag, having certain swelling property, can prevent the cracking of high-heat-conductivity glue gel material, is the important substance of the said high-heat-conductivity glue gel material of the present invention.
Copper Slag is a kind of complementary gelling material with lateral reactivity, be characterized in being rich in iron, its all iron content is 20 ~ 40%, the existence of iron will significantly strengthen the capacity of heat transmission of high-heat-conductivity glue gel material, Copper Slag compact structure after levigate, pore-free, the gelling material formed after aquation together with cement has the higher capacity of heat transmission, cementing solidify after high-heat-conductivity glue gel material thermal conductivity higher than normal concrete or mortar.Copper Slag can substitute prepared from steel slag for the said high-heat-conductivity glue gel material of the present invention, is the important substance of the said high-heat-conductivity glue gel material of the present invention.
A kind of aggregate of quartz sand, there is the advantages such as heat conductivility is good, economical and practical, easy acquisition, can improve the performances such as the thermal conductivity of the said high-heat-conductivity glue gel material of the present invention, workability and intensity, be the important substance of the said high-heat-conductivity glue gel material of the present invention.
Defoamer is a kind of admixture, be used for eliminating the foam formed in construction process at high-heat-conductivity glue gel material, reduce the porosity after the sclerosis of high-heat-conductivity glue gel material, strengthening the heat conductivility of high-heat-conductivity glue gel material, is the important auxiliary substance of the present invention's said high-heat-conductivity glue gel material.
Water reducer is a kind of admixture, be used for improving rheological and the weather resistance of high-heat-conductivity glue gel material in constructing, and reduce water-cement ratio, reduce the porosity after the sclerosis of high-heat-conductivity glue gel material, strengthening the heat conductivility of high-heat-conductivity glue gel material, is the important auxiliary substance of the present invention's said high-heat-conductivity glue gel material.
The present invention has the following advantages:
(1) high-heat-conductivity glue gel material thermal conductivity of the present invention is high, and serviceability is good, has for micro-expansibility, fully packing can hole in fact, be combined closely in heat exchange pipeline and rock stratum, strengthen exchange capability of heat.
(2) use this high-heat-conductivity glue gel material not corrode by underground water by available protecting heat exchange pipeline, extend the heat exchange pipeline life-span, reduce system cloud gray model risk.
(3) this high-heat-conductivity glue gel material price economy, life-span long, easily to obtain and environmentally safe.
Embodiment
Embodiment 1: high-heat-conductivity glue gel material making step of the present invention is as follows: by quality proportioning by ordinary Portland cement (PO32.5R) 100 grams, and specific surface area is 420m
2100 grams, the slag of/kg, quartz sand 210 grams, the THIX-108 silicone antifoam agent of Yantai Thinking Finechem Technology Co., Ltd. 1.5 grams, the JCW-01 high performance water reducing agent of polyocarboxy acid 2.0 grams of Shaanxi absolute sincerity building materials limited liability company is formulated.Add water by 50% of cement used and slag total mass during site operation and stir into uniform sizing material injection hole.Its thermal conductivity is 3.13W/ (mK) after tested, and specific heat is 2.14MJ/ (m
3k), rate of expansion 0.03%, 28 days folding strength 7.5MPa, 28 days ultimate compression strength 36.4MPa.
Embodiment 2: high-heat-conductivity glue gel material making step of the present invention is as follows: by quality proportioning by ordinary Portland cement (PO32.5R) 100 grams, and specific surface area is 380m
2the Copper Slag of/kg 120 grams, quartz sand 180 grams, the THIX-108 silicone antifoam agent of Yantai Thinking Finechem Technology Co., Ltd. 1.8 grams, the JCW-01 high performance water reducing agent of polyocarboxy acid 2.2 grams of Shaanxi absolute sincerity building materials limited liability company is formulated.Add water by 50% of cement used and Copper Slag total mass during site operation and stir into uniform sizing material injection hole.Its thermal conductivity is 3.26W/ (mK) after tested, and specific heat is 2.35MJ/ (m
3k), rate of expansion 0.04%, 28 days folding strength 6.8MPa, 28 days ultimate compression strength 34.2MPa.
The said high-heat-conductivity glue gel material of the present invention has two kinds of using method: one is at the construction field (site), each component is taken by above-mentioned quality proportioning, by mechanical stirring to evenly, then by the 40-50% of high-heat-conductivity glue gel material cement used and slag (or Copper Slag) total mass add water stir after injection hole; Two is mixed by quality proportioning by high-heat-conductivity glue gel material in proportion in advance, injection hole after the 40-50% ratio being transported to cement and slag (or Copper Slag) total mass in on-the-spot gelling material adds water and stirs.
Claims (6)
1. strengthen a high-heat-conductivity glue gel material for underground heat heat-exchange system heat-exchange capacity, it is characterized in that: comprise cement, slag or Copper Slag, quartz sand, defoamer and water reducer, the quality proportioning of each component is:
Cement: 100 grams
Slag or Copper Slag: 50 ~ 200 grams
Quartz sand: 150 ~ 300 grams
Defoamer: 0.8 ~ 3.0 gram
Water reducer: 1.2 ~ 3.6 grams
Defoamer is silicone antifoam agent, and water reducer is polycarboxylate water-reducer.
2. the high-heat-conductivity glue gel material of enhancing underground heat heat-exchange system heat-exchange capacity according to claim 1, is characterized in that: described each components by weight is:
Cement: 100 grams
Slag or Copper Slag: 100 ~ 150 grams
Quartz sand: 200 ~ 250 grams
Defoamer: 1.1 ~ 2.5 grams
Water reducer: 1.6 ~ 3.0 grams
3. the high-heat-conductivity glue gel material of enhancing underground heat heat-exchange system heat-exchange capacity according to claim 1, is characterized in that: the specific surface area of slag is 400 ~ 500m
2/ kg.
4. the high-heat-conductivity glue gel material of enhancing underground heat heat-exchange system heat-exchange capacity according to claim 1, is characterized in that: the specific surface area of Copper Slag is 250 ~ 450m
2/ kg.
5. the high-heat-conductivity glue gel material of enhancing underground heat heat-exchange system heat-exchange capacity according to claim 1, is characterized in that: slag or Copper Slag can be used alone, and also slag and Copper Slag can be mixed to form new compound material with arbitrary proportion and use.
6. the high-heat-conductivity glue gel material of enhancing underground heat heat-exchange system heat-exchange capacity according to claim 1, is characterized in that: the water adding this cement and slag or Copper Slag total mass 40 ~ 50%, injection hole after stirring.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510519263.8A CN105174860A (en) | 2015-08-21 | 2015-08-21 | High thermal conductive cementing material capable of enhancing heat exchange performance of heat exchange system of floor heating |
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| CN201510519263.8A CN105174860A (en) | 2015-08-21 | 2015-08-21 | High thermal conductive cementing material capable of enhancing heat exchange performance of heat exchange system of floor heating |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106082797A (en) * | 2016-06-06 | 2016-11-09 | 长安大学 | A kind of improve copper ashes powder method of dispersing uniformity in cement bonded sand/clean slurry |
| CN106082876A (en) * | 2016-06-27 | 2016-11-09 | 黑龙江工程学院 | Be suitable to concrete and the Copper Slag application in terms of concrete of microwave ice removing |
| CN108751870A (en) * | 2018-07-26 | 2018-11-06 | 成都理工大学 | A kind of underground heat exploitation high heat conduction cementing concrete material |
| CN112251213A (en) * | 2020-10-15 | 2021-01-22 | 中国地质科学院水文地质环境地质研究所 | Composite chemical stimulant in geothermal system |
| CN112759316A (en) * | 2021-01-13 | 2021-05-07 | 中国矿业大学 | Filling material with thermal conductivity and design method thereof |
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| CN102875088A (en) * | 2012-09-28 | 2013-01-16 | 李春普 | Porous lightweight slag brick |
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| EP0774446A1 (en) * | 1995-11-17 | 1997-05-21 | Compagnie Du Sol | Mortar with high thermal conductivity and process for making such mortar |
| CN1868959A (en) * | 2006-04-17 | 2006-11-29 | 山东建筑大学 | Underground pipe heat exchanger drilling hole refilling material |
| CN101480814A (en) * | 2009-02-17 | 2009-07-15 | 同济大学 | Method for preparing cement-based grout and mortar for backfilling earth source heat pump underground penstock |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106082797A (en) * | 2016-06-06 | 2016-11-09 | 长安大学 | A kind of improve copper ashes powder method of dispersing uniformity in cement bonded sand/clean slurry |
| CN106082876A (en) * | 2016-06-27 | 2016-11-09 | 黑龙江工程学院 | Be suitable to concrete and the Copper Slag application in terms of concrete of microwave ice removing |
| CN108751870A (en) * | 2018-07-26 | 2018-11-06 | 成都理工大学 | A kind of underground heat exploitation high heat conduction cementing concrete material |
| CN112251213A (en) * | 2020-10-15 | 2021-01-22 | 中国地质科学院水文地质环境地质研究所 | Composite chemical stimulant in geothermal system |
| CN112251213B (en) * | 2020-10-15 | 2022-09-23 | 中国地质科学院水文地质环境地质研究所 | Composite chemical stimulant in geothermal system |
| CN112759316A (en) * | 2021-01-13 | 2021-05-07 | 中国矿业大学 | Filling material with thermal conductivity and design method thereof |
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Application publication date: 20151223 |