지붕살수에 의한 증발냉각작용이 최상층 실내온열환경에 미치는 영향 분석 = An Evaluation on Effects to Affect Indoor Thermal Environment of the Top Floor caused by Evaporative Cooling of Roof Water Spraying

다국어 초록 (Multilingual Abstract)

This study is to investigate the passive cooling method to block the flowing amount of heat to be streamed through roof in summer and to evaluate the effects of evaporative cooling by roof water spraying. Spraying water on roof surface of the existing structures and measuring the effects to control the rising of indoor temperature according to the roof water spraying, this study evaluates the effectiveness of the roof water spraying system. This study provides the optimum design specification for roof insulation and the fundamental data for passive cooling design. The results of this study are summarized as follows. 1) As the experimental results to measure the effects of roof water spraying in the closed space, the indoor temperature at the top floor by roof water spraying exhibited 0.7∼1.0℃ lower temperature than at the top floor without roof water spraying. It was observed that the roof water spraying led to the effects to control the rising of indoor temperature to the degree of 39∼43%. 2) High temperature difference of 1.8∼2.3℃ between the top and inter-story due to the poor roof insulation was measured. 3) By the analysis of indoor thermal comfort index, the roof water spraying exhibited the improved indoor thermal environment of MRT 0.6∼0.9℃, PMV 0.05∼0.31, ET* 0.3∼1.0℃ and SET* 0.3∼1.0℃. 4) It was illustrated that the roof water spraying to use evaporative cooling should be the passive cooling method to be able to effectively control the rising of indoor temperature.

참고문헌 (Reference)

1 "에너지절약 설계기준 해설서" 2005

2 "공동주택의 하절기 자연환기 시 지붕면 일사수열이 최상층 실내온열환경에 미치는 영향 분석" 25 (25): 45-55, 2005

3 "공동주택의 하절기 개구부 밀폐 시 지붕면 일사수열이 최상층 실내온열환경에 미치는 영향 분석" 24 (24): 45-53, 2004

4 "Thermal environmental conditions for human occupancy" 55-81, 1981

5 "Thermal environmental conditions for human occupancy" 55-81, 1981

6 "Summer cooling load as affected by heat gain through dry" 46 : 231-246, 1940

7 "Roof spray for reduction in transmitted solar radiation HPAC" 131-137, 1950

8 "Roof cooling with intermittent water sprays" 72 : 1966

9 "Moderate thermal environments-determination of the PMV and PPD indices and specification of the conditions for thermal comfort" ISO-7730 1984

10 "Chapter 22" 412-, 1972