냉동유닛의 실운전 조건에서 성능특성에 대한 실험 연구
An Experimental Study on the Performance Characteristics of Refrigerator Unit for Box under Actual Operating Conditions
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In this study, the performances of the refrigeration unit for the box under actual operating conditions were examined by using the constant temperature and humidity chamber (air enthalpy method). For this purpose, the degree of superheat, pressure, and temperature were measured while changing the EEV opening, the compressor speed, the outdoor temperature, and the load in the refrigeration cycle of the refrigeration unit. The highest cooling performance was found at EEV 33%. However, EEV 35% with low compression ratio and degree of superheat was the most reliable in terms of reliability. Considering the compressor speed and cooling performance, the refrigeration unit was in an optimal condition at the compressor speed 3,040RPM. The results of this study will be provided as basic data for the optimal design of refrigeration units for box.
Abstract
In this study, the performances of the refrigeration unit for the box under actual operating conditions were examined by using the constant temperature and humidity chamber (air enthalpy method). For this purpose, the degree of superheat, pressure, and temperature were measured while changing the EEV opening, the compressor speed, the outdoor temperature, and the load in the refrigeration cycle of the refrigeration unit. The highest cooling performance was found at EEV 33%. However, EEV 35% with low compression ratio and degree of superheat was the most reliable in terms of reliability. Considering the compressor speed and cooling performance, the refrigeration unit was in an optimal condition at the compressor speed 3,040RPM. The results of this study will be provided as basic data for the optimal design of refrigeration units for box.
참고문헌 (8)
- 김영신, "자동차용 에어컨 압축기의 성능 향상에 대한 연구", 대한기계학회논문집 B, 39(9), pp.713~718 (2015), 대한기계학회
- Choi J. Y., "Experimental Study on the Improvement of Efficiency using Water-cooled Condenser in Mobile Air-conditioning System", KSAE, pp.493~499 (2014)
- Lee H. S., "An Experimental Study on Direct Expansion System’s Performance of Mobile Alternative Refrigerant Air Conditioning System", pp.423~428 (2012)
- Cho H. H., "Study on the Performance Improvement for an Automobile Air Conditioning System Using Alternative Refrigerant R1234yf", SAREK, 25(4), pp.201~207 (2013)
- Lee K. R., "A Study on the Change of Optimal Refrigerant Charge According to Cooling Operating Conditions", SAREK, pp.13~16 (2018)
- 이대웅, "자동차용 CO2 에어컨 시스템의 성능 특성에 관한 실험적 연구", 한국자동차공학회 논문집, 23(1), pp.18~24 (2015), 한국자동차공학회[DOI]
- "Agreement on the International Carriage of Perishable Foodstuffs and on the Special Equipment to be Used for such Carriage(ATP)", ~ (2014)
- Korea Refrigeration & Air-conditioning Assessment Center, "Psychrometric calorimeter", ~ (2013)