Effects of Nozzle Exit Position on Condenser Outlet Split Ejector-Based R600a Household Refrigeration Cycle

Yongseok Jeon, Hoon Kim, Jae Hwan Ahn and Sanghoon Kim
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Yongseok Jeon: Department of Refrigeration and Air-Conditioning Engineering, Chonnam National University, 50 Daehak-ro, Yeosu, Chonnam 59626, Korea
Hoon Kim: Research Group of Consumer Safety, Korea Food Research Institute, 245 Nongsaengmyeong-ro, Iseo-Myeon, Wanju-Gun, Jeollabuk-do 55365, Korea
Jae Hwan Ahn: Research Group of Consumer Safety, Korea Food Research Institute, 245 Nongsaengmyeong-ro, Iseo-Myeon, Wanju-Gun, Jeollabuk-do 55365, Korea
Sanghoon Kim: Department of Mechanical Design Engineering, Chonnam National University, 50 Daehak-ro, Yeosu, Chonnam 59626, Korea

Energies, 2020, vol. 13, issue 19, 1-12

Abstract: The objective of this study is to investigate the performance characteristics of a small-sized R600a household refrigeration system that adopts a condenser outlet split (COS) ejector cycle under various operating and ejector geometry conditions. The coefficient of performance and pressure lifting ratio of the COS ejector cycle were analyzed and measured by varying the entrainment ratio, compressor speed, and nozzle exit position. The optimum nozzle exit position in the COS ejector cycle adopted to achieve the maximum cycle performance was proposed as a function of the compressor speed and entrainment ratio. The optimum nozzle exit position was 0 mm when the entrainment ratio and compressor speed were low, and it increased as the entrainment ratio and compressor speed increased owing to the associated internal pressure drop in the suction section.

Keywords: two-phase ejector; nozzle exit position; household refrigeration cycle; optimization; condenser outlet split (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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