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http://dx.doi.org/10.6110/KJACR.2011.23.7.513

An Experimental Study on the Performance Characteristics of a Single-Circuit Multi Cycle and a Bypass Two-Circuit Multi Cycle  

Song, Young-Seung (Department of Mechanical Engineering, Graduate School of Korea University)
Jung, Hae-Won (Department of Mechanical Engineering, Graduate School of Korea University)
Yoon, Won-Jae (Department of Mechanical Engineering, Graduate School of Korea University)
Kim, Yong-Chan (Department of Mechanical Engineering, Korea University)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.23, no.7, 2011 , pp. 513-519 More about this Journal
Abstract
The object of this study is to investigate the performance characteristics of refrigerators using a single-circuit multi cycle and a bypass two-circuit multi cycle. Each refrigeration cycle was tested by varying secondary fluid mass flow rate and temperature. Based on the experimental data, the optimum refrigerant charge was 48 g and the COP at the optimum secondary fluid mass flow rate was 1.53 for the single-circuit multi cycle. For freezer(F)-only mode, both the single-circuit multi cycle and the bypass two-circuit multi cycle were operated at overcharge conditions, resulting in an increase of the secondary fluid mass flow rate. The maximum COPs of the single-circuit multi cycle and the bypass two-circuit multi cycle were 1.22 and 1.35, respectively. The COP increased by 10.7% with the application of the bypass two-circuit multi cycle.
Keywords
Single-circuit multi cycle; Bypass two-circuit multi cycle; COP; Refrigerator;
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Times Cited By KSCI : 1  (Citation Analysis)
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