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Double Circuit Evaporator Shell Tube Heat Exchanger With R134a Refrigerant

Categories Shell And Tube Heat Exchanger
Brand Name: GREEFOUN
Model Number: QXU155D8
Certification: CE
Place of Origin: CHINA
MOQ: 1piece
Payment Terms: TT, L/C, Western Union
Supply Ability: 100000pieces/year
Delivery Time: within 15days
Packaging Details: Standard Export Package
Refrigerant: R134a
Color: Custom made
Shell material: seamless/304,316Lstainless steel pipe
Cooling capacity: 18KW~3000KW
Heat exchange tube: red copper
Cover material: Carbon steel
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    Double Circuit Evaporator Shell Tube Heat Exchanger With R134a Refrigerant

    Double Circuit Evaporator Shell and Tube


    Heat Exchanger for Central Air Conditioning


    Due to the internal and external fluid temperature is different, so the heat exchanger shell and tube

    bundle temperature is also different. If the temperature difference between the two, the heat exchanger

    will produce a lot of thermal stress, resulting in pipe bending, fracture, or from the tube board pull.

    Therefore, when the tube and the shell temperature difference exceeds 50 ℃, the need to take

    appropriate compensation measures to eliminate or reduce thermal stress. According to

    the compensation measures adopted, shell and tube heat exchanger can be divided into the following

    main types:

    ① fixed tube plate heat exchanger tube at both ends of the tube plate and the shell into one, simple

    structure, but only for hot and cold fluid temperature difference is not, and the shell does not need

    mechanical cleaning when the heat transfer operation. When the temperature difference is slightly larger

    and the shell pressure is not too high, the elastic compensation ring can be installed on the housing to

    reduce the thermal stress.

    (2) The tube sheet at the end of the tube bundle of the floating head heat exchanger can float freely and

    completely eliminate the thermal stress; and the whole tube bundle can be extracted from the casing for

    easy mechanical cleaning and maintenance. Floating head heat exchanger is widely used, but the

    structure is more complex, higher cost.

    ③ U-tube heat exchanger each tube are bent into U-shaped, both ends were fixed in the same tube board

    upper and lower areas, with the help of the box within the partition into the import and export of two rooms.

    This heat exchanger completely eliminates thermal stress, the structure is simpler than the floating head,

    but the pipe is not easy to clean.

    ④ eddy current hot film heat exchanger vortex hot film heat exchanger using the latest vortex heat film

    heat transfer technology, by changing the fluid movement state to increase the heat transfer effect, when

    the media through the vortex tube surface, the strong erosion of the pipe surface, Thermal efficiency. Up

    to 10000W / m2 ℃. At the same time this structure to achieve a corrosion-resistant, high temperature,

    high pressure, anti-fouling function. Other types of heat exchanger fluid channel for the fixed direction of

    the flow form, the formation of heat transfer tube surface flow, convective heat transfer coefficient

    decreases.


    U SHAPED TUBE DRY EVAPORATOR (DOUBLE CIRCUIT)


    CAPACITY: 120KW TO 310KW

    ModelsQXU120D8QXU135D8QXU155D8QXU185D10QXU220D10QXU270D10QXU310D10

    Rated data
    Refrigerant R22

    ti=12°C te=2°C

    tu=7°C Dts=5°C

    QnKW120135155185220270310
    Kcal/h(×103 )103.2116133.3159189232267
    Wnm3 /h20.623.226.731.837.846.453.3
    Wmm3 /h25283041436568
    Dpnbar0.410.440.370.360.430.420.43

    ModelsQXU120D8QXU135D8QXU155D8QXU185D10QXU220D10QXU270D10QXU310D10
    Dimension(mm)A1815211523152320232026542654
    B219219219219273273273
    C200200200200234234234
    D1530183020302000200022802280
    E240240240300300300300
    VentS11/21/21/21/21/21/21/2
    OutletS21/21/21/21/21/21/21/2
    ConnectionW(DN)89898989114114114
    D1(mm)22222222353535
    D2(mm)42424242545454
    P(kg)145155163232255279296

    Qn-rated refrigerating capacity Wn-cooling water flow Wm-maximum cooling water flow

    Dpn-pressure drop of recirculating cooling water Dts-overheat temperature


    COMPANY IMAGE



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