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  1. #1
    Join Date
    Jun 2016
    Location
    Lithuania
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    Midd-temperature R290 refrigeration system



    Hello guys,

    I would like to design refrigeration system of 1,5 kW cooling capacity. If take to account new f-gas regulation I decided to design system wich will run on R290. To consider compressor is easy, there is a lot of them designed to operate with propane.
    My question, is there any special requirement for heat exchangers if I use propane as refrigerant?



  2. #2
    Join Date
    May 2012
    Location
    England
    Age
    53
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    1,220
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    Re: Midd-temperature R290 refrigeration system

    .

    NO, evaporators are fine but be careful with the fans.
    The fans need to be X rated so they don't spark.

    Rob

    1.3.2 TYPE Ex de – FLAMEPROOF MOTORS WITH
    INCREASED SAFETY TERMINAL BOX
    (according to EN/IEC 60079-1 and EN/IEC 60079-7)
    Ex de motors differ from Ex d motors only on the configuration
    of terminals and terminal box. The terminal box with increased
    safety terminals prevents from any ignition

    .
    .. ... -. .----. - / -- --- .-. ... . / -.-. --- -.. . / --. --- --- -..

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