Transcritical CO2 air source heat pump for residential buildings

A research group designed a solar-assisted CO2 heat pump system that can reportedly achieve a lower levelized cost of energy than gas boilers in residential building in the United Kingdom. The system has the potential to achieve a coefficient of 5. 1. Researchers at Brunel University London have developed a new system design for residential heat pumps using transcritical carbon dioxide (CO2) as the refrigerant. CO2 has a very low boiling point and is considered an ideal refrigerant solution for heat pumps. It is also non-toxic, non-flammable and has a low global warming potential (GWP). "CO2 has ...

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