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http://dx.doi.org/10.5762/KAIS.2011.12.8.3366

A Study on the Performance Characteristics of Water Heat Source Heat Pump System using CO2 Refrigerant  

Chang, Keun-Sun (Department of Mechanical Engineering, Sunmoon University)
Kang, Hee-Jeong (Department of Mechanical Engineering, Sunmoon University)
Kim, Young-Jae (Department of Chemical and Biochemical Engineering, Sunmoon University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.12, no.8, 2011 , pp. 3366-3373 More about this Journal
Abstract
In this study, performance characteristics of a water source heat pump system using $CO_2$ as a refrigerant are investigated experimentally. Cooling and heating capacities and COP of the system are analyzed for various system performance variables such as refrigerant charge, expansion valve opening, compressor frequency and internal heat exchanger. Results show that optimum amount of refrigerant charge and expansion valve opening exists at maximum point of COP curve, and cooling capacity increases but COP decreases with the increase of compressor frequency. When the internal heat exchanger is installed, cooling capacity increases about 4.0% whereas heating capacity decreases about 0.89% compared to the case without internal heat exchanger.
Keywords
Carbon Dioxide; Water Heat Source Heat Pump; Performance Characteristics;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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