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  1. #1
    Join Date
    Dec 2003
    Location
    China
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    Question A question about the pressure drop in coil .

    Usually in heat exchanger designing,the less the pressure drop, the better.

    But a professor said, in an air cooled condenser designing, we must keep an appropriate Presure drop. (otherwise the two phase refrigerant will go to the expansion valve.)
    and the pressure drop of the refrigerant (here R22) in the tube of a condenser coil shouldn't less than 4 psia.(The unit is about 100 tons capacity,and the pressure drop in our first selection is about 1.8psia)

    It's really a new idea for me. I wondered if there are some experience pressure drop date for it?

    I can't find informations about it. so I come here find help.

    Thanks for all reply.
    Last edited by jackcn; 23-04-2004 at 08:07 AM.

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