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노지웅(Roh Ji-Woong) 한국태양에너지학회 2012 한국태양에너지학회 논문집 Vol.32 No.1
According to the advancement of computer and simulation method, it becomes possible to predict indoor climate precisely by using CFD simulation coupled with heat conduction, convection, and radiation. However, predicting the indoor climate is generally conducted by using a simplified CFD coupled simulation method since it takes quite long time to use a general CFD simulation method, In this study, a simplified CFD coupled simulation was conducted in order to find out the effect of natural ventilation by wind-driven in atrium. As a result of calculation, it was clarified that the natural ventilation driven by temperature difference was not enough to remove the accumulated heat of upper zone and the natural ventilation by wind-driven was needed. Finally, it is required to decide the window direction and size based on correct indoor climate prediction method for the effective use of natural ventilation by wind-driven.
공동주택 단지의 주동형식에 따른 냉난방 에너지 비용 분석
노지웅(Roh, Ji-Woong) 한국태양에너지학회 2013 한국태양에너지학회 논문집 Vol.33 No.1
This study aims to investigate the energy performance of apartment in respect of complex design, building type and generation house layout and finally to produce the guide line for energy saving design. To grasp the present condition and problem about this subject, apartment building types were examined and representative types were extracted. Considering azimuth angle, private area, and generation number, building type of the subject apartment was classified in detail, energy simulation was conducted, and the effect to energy cost was compared. In the research, using VE energy simulation program, the heating and cooling load were calculated and converted to energy cost. It is expected that this analysed results will be basic data for the more integrated study. Research consequence can be summarized as follow: 1) Energy cost is compared according to several azimuth in plank "一" type apartment. As the results, calculated gas cost is the best in 49°, but total cost is in-31°. 2) Apartment buildings of tower types are compared, it is resulted that "Y" type (azimuth-7°,-20°) is the best in gas cost, but the total cost is worst because of high cooling load.
공동주택 단지의 주동형식에 따른 냉난방 에너지 및 외기냉방 효과 분석
노지웅(Roh, Ji-Woong) 한국태양에너지학회 2014 한국태양에너지학회 논문집 Vol.34 No.4
This study makes three apartment building complex an object of analyzing representative building types and energy consumption rate of households, and effect of outdoor air cooling. Recently created apatrment complex is composed of very various types of building, plan, and orientation etc. But, it is difficult to remark conclusively that these various types of buildings are designed energy-effectively. Because architects are hard to find useful energy design guideline for decision making. By the preceding study, the present condition and problem about this subject is grasped, apartment building types were examined and representative types were extracted. In this study, energy simulation was conducted, and the effect to outdoor aircooling was analyzed about representative types of the subject apartment complex. It is expected that this analysed results will be basic data for the more integrated study. Research consequence can be summarized as follow: 1) Besides solar gain, household layout of building, orientation, and plan etc. effects compositively on energy consumption rate. 2) The effect of ourdoor air cooling in building of tower type can be improved by arranging households appropriately.