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장용성(Jang Yong-sung),서승직(Suh Seung-jik),박효순(Park Hyo-soon) 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2
This study aims to analysis sensitivity of natural room air temperature for variation of climate and design parameter factors. To this end, we performed a simulation with Trnsys 15.3 program, and verified accuracy of simulation and reliability of the program through a experiment. Error between the experimental value and simulation value showed by 0.6℃, but behavior for a temperature variation almost accorded. Main factor that influence in variation of natural room air temperature was radiation. In addition to this, heat capacity and thermal insulation performance was correlation with variation of natural room air temperature.
열교환 유니트 적용에 따른 동시급배기 환기시스템 성능 비교
장용성(Jang. Yong-Sung),김혜정(Kim. Hea-Jeong),윤용진(Yoon. Yong-Jin),박효순(Park. Hyo-Soon),서승직(Suh. Seung-Jik) 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1
The purpose of this study is to evaluate the performance of wall type ventilation systems heat exchange unit adapted. Performance of ventilation systems was estimated by a ventilation rate, ventilation effectiveness and power consumption. Experiment was performed in a thermal environmental chamber that heated by a electric heating cable. A tracer gas technique was used to measure ventilation effectiveness of ventilation systems. A tracer gas of CO₂ was injected in a chamber using step-up method. The results of this study can be summarized as follows. (1) The air infiltration rate of the chamber was calculated by 0.5 ACH. (2) Effective ventilation rate of each ventilation system was estimated by 60 percent of a ventilation airflow rate. (3) The ventilation effectiveness of ventilation systems was measured by 70 percent. (4) Energy saving rate of a heat recovery wall type ventilation system was improved 28 compared to general wall type ventilation system.