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자동차 냉방시스템에서 건조기 일체형 응축기에 관한 연구
윤병도(Byungdo Yoon),김경훈(Kyunghoon Kim),장주섭(Joosup Jang) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
An experimental study was performed to understand the heat transfer and fluid dynamic characteristics of Sub-Cooled Hybrid Condenser (SCHC), which conventional condenser and receiver dryer are integrated into. SCHC also employs a sub-cooled refrigerant passages at the end of the condenser in order to supply perfect liquid refrigerant to the expansion unit. Throughout the present study it was found that the developed SCHC increases in the degree of sub-cooling by 10 ~ 100% compared to conventional condenser. The excessive sub-cool has improved the cooling performance by 10%, and that leads reduction in evaporator outlet ai<br/> temperature 1.5℃. Also found through the study is that the refrigerant pressure drop across SCHC is fairly increased due to insertion of the desiccant cartridge in the receiver tank whic is composed of 제올라이트(zeolite), filter and supporter plate.
루프형 히트파이프를 적용한 CPU 냉각장치에 관한 실험적 연구
윤병도(Byungdo Yoon),김경훈(Kyunghoon Kim) 한국자동차공학회 2002 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2002 No.5_3
According to the improvement of PC performance, it is expected that heating value, which causes PC to malfunction, is increased. Therefore, the development of new cooling system is recently required. As the method to solve this problem, we applied looped heat pipe to PC cooling system. The advantage of the looped heat pipe is that it has a small size, light weight, simple shape, long life and it has a good performance on heat transfer, no-noise, wide range of applicable temperature and no supply of power from the outside. It is confirmed that looped heat pipe reduces thermal resistance and has a good performance on PC cooling.