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이중외피와 할로우 코어를 적용한 초고층 주거건물의 에너지 절감 방안에 관한 연구
이승복,원종서 대한건축학회 2005 대한건축학회논문집 Vol.21 No.3
The environment pollution is very important problem. Even at the field of architecture, a study about method of energy saving and constructing environment friendly building will have performed with activity. But trends of Korea housing market are changed that the height of building become more higher and the level of comfort going up. Therefore, these requirements force to increase the energy usage for indoor environmental controls. Thus, this study aims at reducing the heating and cooling energy requirements of high-rise residential complex using twin skin facade and hollow core. Based on ESP-r simulation, the alternatives of facade design compare to the conventional facade design. The alternatives is as following. 1) Basecase(expanded balcony), 2) Expanded balcony + Hollow Core, 3) Twin Skin facade, 4) Twin Skin facade + Hollow Core. If outdoor temperature higher than 26℃, the air temperature of passing hollow core low maximum 7℃. In winter, the air temperature of passing hollow core higher outdoor temperature. Thus using hollow core could reduce heating and cooling energy. It was confirmed that the possibility of natural ventilation strategies through twin skin facade during mid-term(15℃~26℃). The flow rate assumed from 0.74 ACH to 23.80 ACH(average flow rate 7.56 ACH). Therefore, If utilize twin skin facade at the high-rise building, natural ventilation could possible and cooling energy could reduce. The results of the simulation show that the facade using hollow core could reduce 16% of heating and cooling energy, the twin skin facade could reduce 85% of heating and cooling energy, the facade using hollow core and twin skin could reduce 88% of heating and cooling energy compared to conventional facade design.
초고층 주상복합건물의 최적 환경조절시스템 모형 개발에 관한 연구
이승복,안서진 대한건축학회 2003 대한건축학회논문집 Vol.19 No.10
As high-rise residential complex becomes popular, disadvantageous changes increase in an environmental context. The occupants need more comfortable indoor conditions with higher standard, and cooling and mechanical ventilation as well as heating systems during the design process become critical issue. However, these trends inevitably result in a rapid increase of energy consumption. Thus, the purpose of this study is to develop an optimal indoor environmental control system in high-rise residential complex which maintains comfortable indoor environment as well as reduces energy consumption. For this purpose, combinations of environmental control systems such as ventilation, heating and cooling were set as an integrated environmental control system, then those were evaluated through TRNSYS simulation for 1) PMV to measure comfort levels of the occupants and 2) energy performance to provide the comfortable indoor environmental conditions. Using HRV for ventilation, the heating load could be reduced by 65% and cooling load by 9% in comparison with ordinary mechanical ventilation. Using radiant floor cooling integrated with dehumidification, the energy consumption could be reduced by 69% in comparison with conventional packaged air-conditioning system without causing any condensation problems. In heating system simulation, using radiant floor heating integrated with HRV, the heating could be provided with lower floor surface temperature due to the reduced heating load and the energy consumption was reduced by 56.7%.
이승복,원종서 대한건축학회 2005 대한건축학회논문집 Vol.21 No.3
The purpose of this study was to evaluate the indoor environmental conditions for comfort and energy performance of radiant floor cooling·heating system integrated with controlled ventilation compared to a conventional solution with packaged air-conditioning·boiler. The alternatives of 5 system types were investigated through TRNSYS simulation for 2 heating alternatives: 1) ALT-1(radiant heating with boiler) and 2) ALT-2(radiant heating with solar collector), and 3 cooling alternatives: 3) ALT-3(packaged air-conditioning), 4) ALT-4(radiant cooling with chiller), 5) ALT-5(radiant cooling with geothermal energy). Based on simulation results, it was confirmed that all alternative systems could provide heating and cooling for occupants comfort. In terms of energy performance, ALT-2 was superior than ALT-1, and ALT-4, ALT-5 demonstrated better performance than ALT-3. From the combined heating and cooling cost point of view, the radiant floor cooling and heating system(boiler+chiller) could reduce the energy cost by 58.8% of the cost by boiler and PAC and it could further reduce by 86.8% when the solar and geothermal energy was used as heat sources.
이승복(Seung-Bok Leigh) 한국태양에너지학회 1995 한국태양에너지학회 논문집 Vol.15 No.3
지금까지 우리는 건물분야에서의 합리적인 에너지 사용을 위하여 건물외피의 단열성능을 향상시킴으로써 열손실을 줄이려는데 주력하여 왔으며, 침기로 이한 열손실을 줄이려는 노력은 상대적으로 미흡하였다. 그러나, 침기로 인한 난방에너지의 소비가 상당량에 이르는 것으로 조사됨으로써 재실형태에 따라 최소환기기준을 만족시키면서 침기에 의한 불필요한 에너지의 손실을 줄이려는 노력이 매우 유효한 것으로 평가되고 있다. 실제로 침기에 의한 불필요한 에너지의 낭비가 얼마나 되는가를 평가하기 위해서는, 건물에서의 침기율을 정확하게 측정할 수 있는 방법이 전제되어야 한다. 본 연구에서는 감압/가압법의 일종인 Blower Door System을 사용하여 공동주택에서의 기밀성능을 측정, 평가함은 물론 측정결과를 토대로 합리적인 수준까지 기밀화할 경우 난방에너지의 절약가능성에 대하여 추정하였다. Since the using of heating energy associated with infiltration is significant in a building, the efforts to minimize the infiltration while ensuring minimum ventilation rates for various types of occupancy will be beneficial. In constrast to that many efforts have been made to reduce heat loss by improving thermal resistance of building envelope, little has been tried to reduce heat loss from infiltration. For achieving such an objective, measurement of air leakage rate will be pre-requisite as a diagnostic tool. A blower door system, a depressurization/ pressurization method, was employed and it demonstrated a good potential for measuring airtightness performance of residential buildings. Based on the test results, annual energy savings for residential heating was estimated by reducing infiltration to a level of reasonably airtight or to a level of ASHRAE Standard 62 -1989 for minimum ventilation.