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R-1234yf Mixtures for replacing R-407C in residential heat pumps

Marcello Bentivegni 1 Denis Clodic 1
1 CEP/Paris
CEP - Centre Énergétique et Procédés
Abstract : This paper deals with the design of air-to-water heat pumps dedicated to the replacement of old oil boilers. Based on the future building regulation to be issued in France in 2012 for old building refurbishment, the allocation for heating, cooling, lighting, ventilation, and hot water will be of 80 kWh/m2.yr. One of the concerns of the current heat pump technology using either R-407C or R-410A is the high global warming potential of those refrigerant blends. The research project presented in this paper aims at defining new refrigerant blends capable to replace R-407C in those air-to-water heat pumps. The refrigerant blends, which have been modeled and tested, have GWPs varying between 200 and 600 kg CO2 kg-1. Several refrigerants have been simulated using REFPROP 8. One has been selected and tested on an air-to-water heat pump developed at the laboratory. Energy performances of this blend are similar to those of R-407C.
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Marcello Bentivegni, Denis Clodic. R-1234yf Mixtures for replacing R-407C in residential heat pumps. 10th International Energy Agency Heat Pump Conference 2011 - HPC 2011, May 2011, Tokyo, Japan. 10 p. ⟨hal-00770032⟩

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