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A Heat Pump Using Carbon Dioxide as the Refrigerant

by LiveModern Webmaster last modified Aug 30, 2013 01:01 AM
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by Alex Wilson last modified Aug 28, 2013

Author name:  Alex Wilson Blog Category:  Energy Solutions GreenSpec Insights A new generation of CO2 -based heat pumps could avoid the high global warming potential of standard refrigerants and generate much higher temperatures A Mayekawa Unimo air-to-water heat pump installation in Australia. Click to enlarge. Photo Credit: Mayekawa In researching and writing about building products for Environmental Building News over the past twenty-plus years I’ve had an opportunity to cover some fascinating breakthrough products and technologies. One such technology I was writing about a few weeks ago is the use of carbon dioxide as a working fluid for heat pumps .  But let me back up with a little context about refrigerants. These are the fluids used in refrigerators, air conditioners, and heat pumps that transfer heat from one place to another in cooling or heating a space. This “vapor-compression-cycle” equipment takes advantage of the principle that compressing a gas absorbs heat and expanding it releases heat—so it’s a way to move heat from one place to another. When this compression and expansion cycle results in a phase change (converting it from liquid to gas or vice-versa), significant heat can be absorbed and released. read more




 

 


 

 

 
 
 

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