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Tracepro를 활용한 이중 블라인드 광파이프 채광 시스템의 블라인드 설계 및 시스템 효율 평가
강은철(Eun-Chul Kang),이의준(Euy-Joon Lee),유성연(Seong-Yeon Yo) 대한설비공학회 2012 설비공학 논문집 Vol.24 No.6
A daylighting system includes three parts; light collector, light transformer and light distributor. A DBLP(Double blind light pipe) daylighting system consists of a double blind light collector, a mirror duct type light transformer and a prism film light pipe distributor. The double blinds for a light collection are used to track the sun’s altitude and azimuth movements throughout the day. Behind both sets of blinds is the light transformer, which is based on a rectangular cone shaped light duct. The light transformer was designed to efficiently deliver the light into the light pipe within a 30 degree radial spread for the efficient light into the distributor. In this study, DBLP system efficiency was simulated, evaluated and optimized by Tracepro as a popular ray trace light design simulation program. The results indicated that DBLP system efficiency evaluated a maximum 22.4% in case of Spring/Fall season solar noon time. While the overall average system efficiency in the morning and afternoon is evaluated about 10%.
물 대 물 히트펌프 시스템 성능 데이터 검증 방안 연구
강은철(Eun Chum Kang),장재철(Jae Cheol Chang),이의준(Euy Joon Lee) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.5
히프펌프 시스템은 적용 현장(Site), 적용 건물(Building), 적용 시스템(System)이 통합되어 구현되었을 때에 성능을 평가하는 것이 중요하다. 왜냐하면, 현장이나 건물 용도에 따라 히트펌프의 성능이 다르게 나타나기 때문이다. 본 연구에서는 히트펌프 유닛에 대한 성능 평가용 실험장치를 구현하였다. 그리고 히트펌프 제조사에서 제공한 성능데이터를 TRNSYS 시뮬레이션 도구를 이용하여 실험에서 구한 성능데이터와 비교 검증하였다. 그 결과 실험에서 구한 성능데이터와 시뮬레이션에서 구한 성능데이터의 오차는 난방시 평균 3.5%, 냉방시 평균 4.1%로 나타났다. It is important to evaluate the heat pump performance when site, building, system are integrated implementation. Because the heat pump performance is different according to the applied site and buildings. We developed the experimental device to evaluate the water to water heat pump system performance. And we compared heat pump performance data provided by the manufacturer using the TRNSYS simulation tool with actual performance data obtained from experiments. As a result, the performance data obtained from experiments and simulations were different that heating error was 3.5% in case of cooling error was 4.1%.