Thermodynamic performance assessment of carbon dioxide blends with low-global warming potential (GWP) working fluids for a heat pump water heater

2015 ◽  
Vol 56 ◽  
pp. 1-14 ◽  
Author(s):  
Baomin Dai ◽  
Chaobin Dang ◽  
Minxia Li ◽  
Hua Tian ◽  
Yitai Ma
Keyword(s):  
Carbon Dioxide ◽  
Global Warming ◽  
Performance Assessment ◽  
Heat Pump ◽  
Global Warming Potential ◽  
Water Heater ◽  
Working Fluids ◽  
Heat Pump Water Heater ◽  
Thermodynamic Performance ◽  
Low Global Warming Potential

scholarly journals Performance assessment of an R32 commercial heat pump water heater in different climates

2022 ◽  
Vol 49 ◽  
pp. 101679
Author(s):  
Muhamad Yulianto ◽  
Takaoki Suzuki ◽  
Zheng Ge ◽  
Takashi Tsuchino ◽  
Masakazu Urakawa ◽  
...  
Keyword(s):  
Performance Assessment ◽  
Heat Pump ◽  
Water Heater ◽  
Heat Pump Water Heater ◽  
Different Climates

Study of Circuit Number on the Evaporator in CO2 Heat Pump Water Heater

2011 ◽  
Vol 71-78 ◽  
pp. 2266-2270 ◽  
Author(s):  
Kang Liu ◽  
Jing Lv ◽  
Song Bo Zhang ◽  
Jie Yang
Keyword(s):  
Heat Transfer ◽  
Carbon Dioxide ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Heat Pump ◽  
Temperature Difference ◽  
Water Heater ◽  
Overall Heat Transfer Coefficient ◽  
Heat Pump Water Heater ◽  
Simulation Package

In the design of a carbon dioxide heat pump water heater evaporator, the effect of the circuit number on the evaporator is investigated numerically by EVAP-COND 3.0 version simulation package of American National Institute of Standards and Technology. It is found that as the circuit number increases the temperature difference between the air and the refrigerant increases, but it reduces the overall heat transfer coefficient. The evaporator capacity will rise firstly, and then drop with the circuit number and achieve the maximum in the optimum circuit number. Therefore, selecting the appropriate circuit number of the evaporator can significantly improve the efficiency and optimize the design.

The Experimental Study of Thermodynamic Performance on R407C Air-Conditioner Hot Water Combined Unit

2011 ◽  
Vol 467-469 ◽  
pp. 549-553
Author(s):  
Hong Song Hu ◽  
Fang Wang ◽  
Jian Zhong Yu ◽  
Wu Hao
Keyword(s):  
Heat Pump ◽  
Paper Analysis ◽  
Hot Water ◽  
Air Conditioner ◽  
Water Heater ◽  
Operation Conditions ◽  
Air Source Heat Pump ◽  
Heat Pump Water Heater ◽  
Environmental Friendly ◽  
Thermodynamic Performance

This paper analysis on the design and the test of an air-conditioner hot water combined unit using environmental friendly refrigerant R407C. Firstly the research status of the system is elaborated for air-source heat pump water heater simply. Then the principle and structure are described on an air-conditioner heat pump followed by a water heater at different running modes and different operation conditions. The hot water experiments of the unit in three seasons have been tested and researched in a multi-functional environmental chamber. Some analysis of the unit’s thermodynamic performance is carried out from the test data for improving such kind of machine afterward.

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