ویژگی های استراتژی های عملیاتی برای ساختمان های یکپارچه با نمای دوپوسته چند طبقه ای

This study measured an actual behavior of a multi-story double skin facade (DSF) in South Korea. The verification of simulation model was made against measured data, and a case study was conducted based on the verified model. Seasonal load characteristics of the DSF building were examined in comparison with the single skin facade (SSF) building, and seasonal operation strategies of the DSF were proposed. The DSF building resulted in 15.8% and 7.2% reductions in heating and cooling energy consumption respectively, compared to the SSF building. In the proposed model of heating seasons, heated air in the cavity was introduced to an outdoor air (OA) mixing box of a HVAC system. In the proposed model of cooling seasons, air in the cavity was flowed into an indoor space through inner layer openings for natural ventilation, and outdoor air supply in a AHU was controlled based on the amount of the natural ventilation. These seasonal proposed models resulted in 28.2% and 2.3% reductions in heating and cooling energy consumption respectively, compared to the DSF model to which operation strategies were not applied.

Building technologies are expected to continue to develop along with an industrial development. In particular, the passive building technology is an element that is planned by an architect and is the first step for building energy reduction with focus on a design. DSF system is one of such passive building technologies where cavity is placed between inner and outer layer to perform functions of natural ventilation, solar radiation control, and insulation.

In heating seasons, the negative impact of the DSF on the heating load by the effect of a shutting off solar radiation was offset by the heat gain from the greenhouse effect of the cavity. The DSF model (Case 3) resulted in 15.8% reduction in the heating energy consumption compared to the SSF model (Cases 1 and 2). In cooling seasons, the negative impact from the greenhouse effect of the cavity, reduced by heat extractions with natural ventilation of the cavity, was offset by the effect of a shutting off solar radiation. The DSF model (Case 3) resulted in 7.2% and 2.3% reductions in the cooling energy consumption compared to the SSF models (Cases 1 and 2) respectively. However, the DSF model (Case 3) showed rather unfavorable results than the SSF model (Cases 1 and 2) in the period from July to August when the cavity temperature reached the maximum.