曹锋

Date:

2025-04-30

Title of Paper:

Experimental investigation on air-source transcritical CO2 heat pump water heater system at a fixed water inlet temperature

Journal:

International Journal of Refrigeration

Summary:

For clarify main affecting factors on air-source transcritical CO2 heat pump water heaters,
and the influence extent of these main affecting factors, at fixed water inlet temperature of
12
C, an experimental research was conducted on a prototype in a range of ambient
temperatures (15
Ce35
C) and water outlet temperatures (55
Ce80
C). Based on the
experimental results, effect of water outlet temperatures and ambient temperatures on the
optimal discharge pressure and system COP was illustrated, and with change of water
outlet temperatures and ambient temperatures, variation of CO2 gas cooler outlet
temperatures, evaporating temperatures and other cycle variables was presented and
interpreted. According established simulation model, we conducted simulation for the
prototype and the cycle respectively adopted another two gas coolers with difference heat
transfer surface. As one conclusion, for an established plant, correlation for the optimal
discharge pressure as the function of ambient temperatures and water outlet temperatures
can be achieved by fitting numerous simulation or experimental results

Co-author:

Wang, Shouguo,Tuo, Hanfei, Cao, Feng*, Xing, Ziwen,

Volume:

36(3),

Page Number:

701-716

Translation or Not:

No

Date of Publication:

2013-02-05