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Heat Pump Design

  1. Jan 12, 2013 #1
    Hey guys,

    I'm looking at designing a heat pump system that uses CO2 as the working fluid. I'm not exactly sure how to pick the components that I need like a compressor, expansion valve, etc. Im trying to create an experimental device that will work in conjunction with my CO2 thermosyphon to take heat from low temperature sources.

    Is there a design guide?
    Does anyone know of a manufacturer of such components or prebuilt assemblies?

    Your help is greatly appreciated!
     
  2. jcsd
  3. Jan 15, 2013 #2
    Nobody has an idea? Im stuck beyond stuck. Havent dealt with this kind of thing before and it hard to find resources.
     
  4. Jan 15, 2013 #3

    etudiant

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    CO2 is a tricky fluid for heat pump use because of its properties such as freezing on expansion. Your project sounds interesting, but why use CO2 as the working fluid when there is a mountain of experience with fluorocarbons, which are not much more demanding in terms of temperature range?
     
  5. Jan 15, 2013 #4
    Trying something different, higher COP, smaller components. Looking to go green. We are realizing however that its a bit out of our league right now. Would you have any resources for designing a heat pump (sizing components and what not) for using R134A as the working fluid?
     
  6. Jan 15, 2013 #5

    etudiant

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    I'm not sufficiently involved with the engineering to help, but would think that the national labs would be your first stop. They are interested in energy efficient heating/cooling and do work on the engineering details in an open framework, unlike the Carriers and such. A quick Google gave this link for a start:
    http://www.ornl.gov/sci/ees/etsd/btric/eere_research_reports/electrically_driven_heat_pumps/advanced_cycle_development/air_to_air_single_speed/ornl_conf_810101_5/ornl_conf_810101_5.pdf [Broken]
     
    Last edited by a moderator: May 6, 2017
  7. Jan 15, 2013 #6
    Thanks for the help. I'm going to have to go to my Project supervisor for some serious advice. I think I'm in a little over my head.
     
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