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윤신혁(Shin-Hyuk Yoon),조금남(Keumnam Cho),조홍기(Hong-Gi Cho),하야세 가쿠(Gaku Hayase) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
The present study measured the frost thickness and frost mass on a flat plate to propose the correlation equations for the local and average frost thickness, frost density, and frost mass. Key parameters were the cooling surface temperature of the flat plate from 258.2 to 268.2 K, absolute humidity of air from 2.98 to 4.16 g/㎏<SUB>DA</SUB>, air temperature from 273.5 to 280.2 K, and air velocity from 1.0 to 2.5 ㎧. Although the area of the plate is the same, local frost thickness was changed along the direction of the flat plate. Correlation equations for the local and average frost thickness and frost mass under the heat pump condition were proposed. The predicted values by the correlation equations under the freezer condition showed larger by the maximum of 30~50% than the predicted values by the present correlation equations under the heat pump condition. The proposed correlation equations might be partly applied to the freezer condition.
모듈 실외기를 가지는 시스템멀티 에어컨 시뮬레이션 툴 개발
김태헌(Tae-Hun Kim),박현연(Hyun-Yeon Park),김중호(Jung-Ho Kim),이창선(Chang-Seon Lee),윤백(Baek Youn),조홍기(Hong-Gi Cho),홍순철(Soon-Cheol Hong) 대한설비공학회 2013 대한설비공학회 학술발표대회논문집 Vol.2013 No.6
With predictable performance of system multi-air conditioner cycle simulation program was developed. Program, a number of indoor units and outdoors, compressors and parts, is composed of elements such as piping. The elements of the system configuration window can be connected to component design is free. The cooing and heating performance results be estimated less than 5% as a result of using this program.