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엔진 폐열 회수 시스템 저온 응축기의 설계 및 성능 평가
배석정(Sukjung Bae),허형석(Hyungseok Heo),박정상(Jeongsang Park),이홍열(Hongyeol Lee),김찬중(Charnjung Kim) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
A waste heat recovery system is consist of dual loop system in which water and refrigerant are used in the high temperature loop and in the low temperature loop, respectively. In the high temperature loop, power is produced by the recovery of waste heat, and the remaining waste heat is delivered to the low temperature loop through the high temperature condenser. In the low temperature loop, after the additional power generates by the use of waste heat from the high temperature loop and an engine coolant, the rest of heat is discharged to outside. In this study, analysis and evaluation were performed for the design of heat transfer of the low temperature condenser. The analysis program was developed in order to simulate the process of heat transfer and the phase change when the geometric parameters and operating conditions of low temperature condenser are entered. By the result of the analysis, the heat transfer performance was predicted in the 2-pass model and it was compared with the experiments. The heat dissipation performance at design point coincides within 2%, but within an average error of 12% in the whole test conditions. In addition, the performance comparison of 4-pass model and 2-pass model is carried out.