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    Heat Exchangers: Applications & Classifications Applications of Heat Exchangers

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    mz_haq
    The document discusses applications and classifications of heat exchangers. It describes how heat exchangers are used in power plants, refrigerators, and other applications to facilitate heat transfer between fluids. It then covers various ways heat exchangers can be classified, such as by transfer process, construction type, flow arrangement, heat transfer mechanism, and whether they are compact. Examples of different heat exchanger types are also shown.

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    Heat Exchangers: Applications & Classifications Applications of Heat Exchangers

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    mz_haq
    45 views5 pages
    The document discusses applications and classifications of heat exchangers. It describes how heat exchangers are used in power plants, refrigerators, and other applications to facilitate heat transfer between fluids. It then covers various ways heat exchangers can be classified, such as by transfer process, construction type, flow arrangement, heat transfer mechanism, and whether they are compact. Examples of different heat exchanger types are also shown.

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    ME307_HeatExchangerClassifications

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    The document discusses applications and classifications of heat exchangers. It describes how heat exchangers are used in power plants, refrigerators, and other applications to facilitate heat transfer between fluids. It then covers various ways heat exchangers can be classified, such as by transfer process, construction type, flow arrangement, heat transfer mechanism, and whether they are compact. Examples of different heat exchanger types are also shown.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    45 views5 pages

    Heat Exchangers: Applications & Classifications Applications of Heat Exchangers

    Uploaded by

    mz_haq
    The document discusses applications and classifications of heat exchangers. It describes how heat exchangers are used in power plants, refrigerators, and other applications to facilitate heat transfer between fluids. It then covers various ways heat exchangers can be classified, such as by transfer process, construction type, flow arrangement, heat transfer mechanism, and whether they are compact. Examples of different heat exchanger types are also shown.

    Copyright:

    © All Rights Reserved
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    Download as pdf or txt
    of 5

    Applications of Heat Exchangers

    Applications of Heat Exchangers


    Heat Exchangers: Applications & Classifications

    Dr. Md. Zahurul Haq

    Professor
    Department of Mechanical Engineering
    Bangladesh University of Engineering & Technology (BUET)
    Dhaka-1000, Bangladesh
    http://zahurul.buet.ac.bd/

    ME 307: Heat Transfer Equipment Design


    T193
    http://zahurul.buet.ac.bd/ME307/
    Components of a simple vapour power plant
    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 1 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 2 / 20

    Applications of Heat Exchangers Applications of Heat Exchangers

    T110 T142
    T214

    Combined cycle power plant Refrigerators.

    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 3 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 4 / 20
    Applications of Heat Exchangers Applications of Heat Exchangers

    Applications of HX Technologies

    T267

    Solar-thermal vapour absorption refrigeration system.


    T729
    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 5 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 6 / 20

    Applications of Heat Exchangers Classification of Heat Exchangers

    Classification of Heat Exchangers

    A. Classification by Transfer Processes:


    1 Direct contact e.g. cooling tower
     Heat Exchangers (HXs) are devices that facilitate transfer of heat
    2 Indirect contact e.g. shell-tube HX
    between two or more fluids a different temperatures.
     HX final design: B. Classification by Construction Type:
     heat transfer and pressure drop analysis, 1 Tubular HX
     sizing and performance analysis,  Double-pipe HX
     economic aspect.  Shell-and-tube HX
     Spiral-tube-type HX
    2 Plate HX
     Gasketed plate HX
     Spiral plate HX
    3 Extended surface HX

    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 7 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 8 / 20
    Classification of Heat Exchangers Classification of Heat Exchangers

    T734
    T735
    Counterflow and parallel-flow configurations for double-pipe heat
    exchangers 1-tube pass and 2-tube pass STHXs.

    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 9 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 10 / 20

    Classification of Heat Exchangers Classification of Heat Exchangers

    T731

    T733

    T736

    T732
    Gascated plate HX.
    Spiral-plate HX
    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 11 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 12 / 20
    Classification of Heat Exchangers Classification of Heat Exchangers HX: Examples

    C. Classification by Flow Arrangement:


    1 Parallel-flow
    2 Counter-flow
    3 Cross-flow
    4 Multipass-flow
    T724

    D. Classification by Heat Transfer Mechanism: Parallel-flow and Counter-flow HX


    1 Single phase, free or forced convection
    2 Phase change, boiling or condensation
    3 Radiation or combined radiation and convection
    E. Compact Heat Exchangers:
     Compact HX, if surface area density > 700 m2 /m3 .
     Automotive HX: 1100 m2 /m3 .
    T725
     Human lungs: 20000 m2 /m3 .
    Cross-flow HX
    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 13 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 14 / 20

    Classification of Heat Exchangers HX: Examples Classification of Heat Exchangers HX: Examples

    HX: Direct Contact

    T726

    A shell-and-tube heat exchanger (one-shell pass and one-tube pass).

    T647
    T727 T728
    Fluid-fluid direct-contact exchangers where one phase can dissolve in the
    Multipass flow arrangements in shell-and-tube heat exchangers other
    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 15 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 16 / 20
    Classification of Heat Exchangers HX: Examples Classification of Heat Exchangers HX: Examples

    HX: (a) Recuperator / (b) Regenerator HX: Regenerator

    
    
     
    T642
    01245678591
    9 0 245 5591
    9
    Recuperator: Hot and cold fluids are separated by surfaces, and heat is T648

    transferred by combination of convection to and from the


    Heat regenerators or heat storing exchangers: (a) Heat storing solids are
    walls and conduction through the walls.
    stationary; (b) heat storing solids continuously circulate between hot and
    Regenerator: Hot and cold fluids alternatively occupy the same space cold streams
    in the exchange core (matrix). Matrix serves as the heat
    storage device that is periodically heated by the warmer
    fluid and then transfers heat to the cold fluid.
    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 17 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 18 / 20

    Classification of Heat Exchangers HX: Examples Classification of Heat Exchangers HX: Examples

    Compact HX HX: Heat Pipe

    T722
    T723

    Compact heat exchanger cores. (a) Fin-tube (flat tubes, continuous plate Heat pipe transfers heat from one place to another, often far apart.
    fins). (b) Fin-tube (circular tubes, continuous plate fins). (c) Fin-tube
    (circular tubes, circular fins). (d) Plate-fin (single pass). (e ) Plate-fin
    (multipass).
    c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 19 / 20 c Dr. Md. Zahurul Haq (BUET) Heat Exchangers: Classifications ME 307 (2020) 20 / 20

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