• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.29 no.1
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• pp.7-14
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• 2017

This study carried out a numerical analysis of the effects of hot waste water supply on the performance of a Type II absorption heat pump. There are two types of hot waste water supply, regular series flow and reverse series flow. Also it investigated the interaction between each type of flow and heat exchange solutions. As the effectiveness of heat exchange solutions increase, the steam generation and (COP) increase as well. If the effectiveness of a heat exchange solution is lower than 0.566, the steam generation rate of the reverse flow is lower than that of the regular series flow. A high effectiveness of heat exchange solution is therefore required to make a larger amount of steam in reverse series flow than with ordinary series flow. The COP difference between the two types of flow decreases with the increasing effectiveness of the heat exchange solution. Thus, a reverse flow type absorption heat pump can match the high steam generation rate and COP of the ordinary flow type when a highly effective heat exchange solution is applied.

• Proceedings of the KIPE Conference
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• 2012.07a
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• pp.596-597
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• 2012

본 논문은 EVs/PHEVs에 사용되는 Bidirectional-LDC 일체형 OBC의 회로구조 및 동작특성 분석결과를 보고한다. 설계된 OBC는 한 개의 트랜스포머와 히트싱크를 LDC 회로와 공유하며, OBC의 출력 측 브릿지 방식의 정류회로는 LDC 동작 시 양방향 운용이 가능하다. 논문에서는 배터리 충전 조건에 따른 적합한 동작모드 제어 알고리즘을 분석하고 검증을 위한 프로토타입의 시험결과를 보고한다.