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  1. #1
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    Pipework insulation how important is it



    A client asked some time ago how important pipework insulation is in regards to lost plant efficiency, power savings etc.
    Has anyone any recommendations or papers to justify real world savings, heat loads.
    Mainly talking about 2 stage ammonia refrigeration systems, coolstores.

    Thanks



  2. #2
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    Re: Pipework insulation how important is it

    I don't know any paper but I read long time ago that we use 5-10% of refrigeration to keep plant cool. So any improvement of pipe insulation will save a few percent of energy but it will be costly energy savings. Actually you can determine cold storage real life energy use for keeping plant cool by compare surface of pipes+vessels insulation to insulation surface of cold rooms. This is based on assumption that heat transfer through pipe insulation and freezer insulation is the same.

  3. #3
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    Re: Pipework insulation how important is it

    Sgei,
    Client asks about power savings, all air coolers blocked with dust, pipe insulation if roof space on -33 deg C wet return block of ice dripping on ceiling, probably $1000000 roof can only tell him what I see.
    If you had a 100 metre pipe in 30 degC with 100mm thick ice on it, it has to be something, but what I don't know.
    Last edited by RANGER1; 18-06-2017 at 08:54 PM.

  4. #4
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    Re: Pipework insulation how important is it

    You can do a test. Switch off all evaporators, manually open 1 or 2 liquid solenoids to make liquid/vapor flow and run the smallest compressor to measure real load to keep plant cool.

  5. #5
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    Re: Pipework insulation how important is it

    Quote Originally Posted by Segei View Post
    You can do a test. Switch off all evaporators, manually open 1 or 2 liquid solenoids to make liquid/vapor flow and run the smallest compressor to measure real load to keep plant cool.
    Thanks for help & reply Segei

  6. #6
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    Re: Pipework insulation how important is it

    A document that may help...

    http://bit.ly/2rIDdPX

  7. #7
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    Re: Pipework insulation how important is it

    Quote Originally Posted by FaultCode View Post
    A document that may help...

    http://bit.ly/2rIDdPX
    Thanks, because it's a broad statement although useful, no one appears to have carried out a practical test that I can find.

  8. #8
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    Re: Pipework insulation how important is it

    Agreed, there seem to be lots of docs saying it saves 5 - 10% on energy but without any backup facts.

  9. #9
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    Re: Pipework insulation how important is it

    There have been several papers written on this by RETA. You may be able to find this info there.

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