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Thread: TXV

  1. #1
    Join Date
    Jul 2008
    Location
    malaysia
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    8

    TXV

    Any body can help me?
    The old TXV has totally under capacity, now I want to replace the new TXV and the problem is to select the new TXV match to the A/C system capacity.

    -to select TXV tonnage
    -compressor is 25 tons
    -A/C system for 1200 sq feet area

  2. #2
    Join Date
    Jan 2008
    Location
    melbourne aus
    Posts
    80

    txv

    g'day
    what is the make model and serial number of the a/c unit? that can help with getting a new one? what refrigerant? and pipe sizes? all this info will help
    in getting the correct txv

    generator

  3. #3
    Join Date
    Jun 2008
    Location
    South Carolina
    Posts
    36
    Your wholesaler should also be helpful in helping you select the correct one if you provide them with the information. Don't be shy in asking for catalogs. The Internet is also helpful, sporlan has a good site that can help you. As you probably know, selecting the right one is extremely important.

  4. #4
    Join Date
    Jul 2008
    Location
    Washington, DC
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    1,582
    How did you arrive at the conclusion the TXV is too small? In my experience, TXV's are the most wrongly accused parts of a refrigeration system.

  5. #5
    Join Date
    Jun 2004
    Location
    St Paul, minnesota
    Posts
    1,163
    Quote Originally Posted by mado View Post
    Any body can help me?
    The old TXV has totally under capacity, now I want to replace the new TXV and the problem is to select the new TXV match to the A/C system capacity.

    -to select TXV tonnage
    -compressor is 25 tons
    -A/C system for 1200 sq feet area
    25 tons for cooling 1200 sq ft. !!! must have an extreme heat load

  6. #6
    Join Date
    Aug 2006
    Location
    Mixing oil and fire with a big spoon.
    Posts
    4,330
    Quote Originally Posted by superfittertech View Post
    25 tons for cooling 1200 sq ft. !!! must have an extreme heat load
    that was my first thought!

    and what Pneuma said is true...add charge and d!ck with the TXV are the first thing that everybody does.

    good luck.
    "Mother" is the name for God on the lips and hearts of children....The Crow

  7. #7
    Join Date
    Jul 2008
    Location
    malaysia
    Posts
    8
    g'day everyone....

    Actually this TXV problem is for control room at oil and gas platform.
    This A/C unit is custom made by manufacturer.

    Superfittertech: - sorry for that wrong info Room area (40ft x 50ft)
    - Control room

    Cool_tech :- the data is

    - Compressor type is Carlyle 06ET265660 (semi-hermetic)
    - R-22
    - Total capacity is 280789 Btu/hr
    - Sensible Capacity is 186931 Btu/hr
    - Cooling coil duty = 154 kW

    refer attachment:-

  8. #8
    Join Date
    Jul 2008
    Location
    Washington, DC
    Posts
    1,582
    Somethings are not adding up.

    So this is a 2000 square foot room?

    Compressor is rated at 23 tons

    Cooiling coil is 154kW X 3414 (BTU per KW) = 525,756 BTU/h or 43 tons

    Do you know how much air you put through the evaporator? Is it 100% outside air or recirculated return air?

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