Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Performance of a Reciprocating Compressor Equipped with Auxiliary Port

보조 흡입구가 장착된 왕복동 압축기의 성능 분석

  • Lee, Yong-Ho (Department of Mechanical Engineering, Graduate school of Incheon University) ;
  • Kim, Hyun-Jin (Department of Mechanical Engineering, University of Incheon)
  • Published : 2008.10.10
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Abstract

Auxiliary port which had been known to be used to reduce the expansion loss of a refrigeration system was applied to a R134a reciprocating compressor in a household refrigerator cycle with an intention of improving the compressor performance. Effects of the auxiliary port on the compressor performance was investigated by a computer simulation program. When a simple hole was made on the side wall of the cylinder as an auxiliary port and surrounding gas inside the compressor shell was assumed to be drawn into the cylinder through the hole, maximum COP improvement of 1.66% was obtained. With auxiliary port equipped with a plate type of check valve, maximum COP was raised to be 1.99%. COP improvement was more distinctive with decreasing the discharge pressure; COP improvement was 5% with discharge pressure of 7 bar.

Keywords

References

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