Modeling and simulation of a transcritical R744 heat pump system

Author

Wang, Fengkun ; Fan, Xiaowei ; Zhang, Xianping ; Lian, Zhiwei

Author_Institution

Sch. of Energy & Environ. Eng., Zhongyuan Univ. of Technol., Zhengzhou

fYear

2009

fDate

25-27 May 2009

Firstpage

3192

Lastpage

3196

Abstract

To analyze the performance of a carbon dioxide heat pump system, a steady state simulation model has been developed. The effects for different operating parameters such as compressor speed and water inlet temperature of the gas cooler were studied. It was shown that there was an optimum compressor speed for a certain system, and the maximum COP decreased and the optimum discharge pressure increased with the increasement of water inlet temperature of the gas cooler. The maximum COP and optimum pressure were correlated as functions of water inlet temperature of the gas cooler, and it is expected to offer useful guidelines for CO2 heat pump design and development.

Keywords

carbon compounds; heat pumps; carbon dioxide heat pump system; compressor speed; gas cooler; steady state simulation model; transcritical R744 heat pump system; water inlet temperature; Analytical models; Carbon dioxide; Computational modeling; Heat pumps; Refrigerants; Space heating; Steady-state; Temperature; Water conservation; Water heating; COP; carbon dioxide; heat pump; optimum; simulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on

Conference_Location

Xi´an

Print_ISBN

978-1-4244-2799-4

Electronic_ISBN

978-1-4244-2800-7

Type

conf

DOI

10.1109/ICIEA.2009.5138790

Filename

5138790