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Residential Split Heat Pump Using Low GWP Refrigerants...

by Bo Shen, Moonis R Ally
Publication Type
Conference Paper
Book Title
13th IEA heat pump conference
Publication Date
Page Numbers
1 to 8
Conference Name
13th IEA Heat Pump Conference
Conference Location
Jeju, South Korea
Conference Sponsor
international energy agency
Conference Date

Conventional refrigerants, e.g. R-410A have high global warming potentials (GWP) > 1800. They are being phased out to protect the environment. The candidates to replace R-410A include R-32, R-452B, R-454B and R-466A for heat pump applications. These candidates are intended for drop-in replacement, i.e. having minimum modifications on existing systems. The paper investigates the low GWP refrigerants drop-in application via system simulations using a well-regarded, hardware-based heat pump model. A baseline heat pump having all fin-and-tube heat exchangers and a two-speed compressor was used. Cross-comparisons were made under rated conditions of ambient temperatures, compressor speeds, indoor air flow rates, respectively for cooling and heating operations. The seasonal performance indices, i.e. SEER and HSPF are presented.