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논문 : 생물생산시설 및 환경공학 ; 연속형 천창을 가진 벤로형 온실의 자연환기 특성 분석
권진경 ( Jin Kyeong Kwon ),이성현 ( Sung Hyun Lee ),성제훈 ( Jae Hoon Seong ),문종필 ( Jong Pil Moon ),이수장 ( Soo Jang Lee ),최병민 ( Byeong Min Choi ),김경자 ( Kyeong Ja Kim ) 한국농업기계학회 2011 바이오시스템공학 Vol.36 No.6
In this study the characteristics of natural ventilation of Venlo-type greenhouse with continuous roof vents were analyzed using commercial computational fluid dynamics (CFD) code. Developed CFD simulation model was verified by comparison with experimental data. Simulation errors were 1.9-46.0% for air velocity and 1.7-11.2% for air temperature at each measurement point. CFD simulations were conducted to estimate the effect of roof vents opening direction, opening angle, outside wind velocity and wind directions on ventilation rate and climate condition in greenhouse. The results of this study showed that ventilation rate of the present greenhouse was increased linearly in proportion to the increase of roof vent opening angle and outside wind velocity over 2.0 m/s. According to the analysis on the effects of different roof vent opening direction, simultaneous opening of wind and leeward vents showed the highest ventilation rate and lowest mean temperature in greenhouse.