http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김종률(J. R. Kim),이영수(Y. S. Lee),장기창(K. C. Jang),라호상(H. S. Ra) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.4
The present study has been conducted to develop a heat pump system using river water of temperature energy which not only belongs to unutilized energy but is a kind of good heat source due to maintain its temperature in a certain degree regardless of seasonal variation. The system did n01 meet the proposed performance after setup. In this paper. the system performance affected by refrigerant Oil, by pressure drop, or by other factors has been discussed, The followings were obtained : (1) Refrigerant Oil mixture rete was 2.5 in weight percentage, (2) Pressure drop through evaporator was 29.1㎪(3.1℃ in saturated tempearture) (3) Pressure drop from the end of evaporator 10 compressor inlet was 39.8㎪(4.0℃ in saturated tempearture). (4) The system performance can to be improved by modifying a pan of pipe line to compressor, and reducing pressure drop through heat exchangers.