CO2 heat pump thats hydronic?


Old 10-14-12, 02:53 PM
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CO2 heat pump thats hydronic?

i researched different stuff and found that they have co2 heat pumps that use carbon dioxide as refrigerant. does anyone know where i can find this type of system in the usa? i know they exist in other countries but want to know if anyone could send me a link to a company that makes the carbon dioxide heat pump?
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Old 10-14-12, 04:24 PM
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Carbon Dioxide is a good refrigerant except for the fact that it takes a lot of power to condense. I suspect it can't even come close to meeting the government mandates on energy efficiency. Honestly, I have never seen a CO2 system outside of a brewery and even those systems were old.

What was your question concerning hydronics?
Old 10-14-12, 04:31 PM
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Sanyo does... However, I don't think you can buy one in the US at all.
Old 10-14-12, 05:27 PM
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Never heard of this but based on a quick read Co2 as a refrigerant is only practical when the heat pump is used for heating only and has a very limited range of operation where it is efficient.
Old 10-16-12, 01:41 PM
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CO2 - must run very high pressures to condensate refrigerant at desired temperatures.
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