An Analysis of Energy Efficiency of a Smart Envelope Package in Residential Buildings
ABSTRACT: In the 1980s and 90s, the construction codes of South Korea did not require substantial insulation, which resulted in a large amount of cooling and heating energy uses in high-rise residential complexes. About 3.6 million residential units were constructed during that period. Since 2014, the Korean government initiated an incentive program to remodel the aged residential units, and only about 2,000 units have taken advantage of the incentive in the last 3 years. Over the last two to three decades, residents have extended living spaces to the balcony areas which were designed to serve as a sun space using passive solar principles. The energy consumption has consequently increased significantly due to the loss of thermal buffer area and an addition of the conditioned space. This study proposes a Smart Envelope Package that can replace an existing exterior window enclosing the living room area of such residential units. This smart envelope package is designed to reduce building’s energy use functioning as a Double Skin Façade, and comes with Building Integrated Photovoltaics (BIPV) to generate electricity, an Energy Storage System (ESS), an A/C condenser, sun-shading devices, automated operable windows and an air filtration system. The Smart Envelope Package aims to reduce cooling and heating energy consumption and to produce electricity during daytime as well, which will be stored in the ESS and used during peak hours and nighttime. The trend of adopting prototype floor plans with very little modifications 20-30 years ago makes the package possible to be modularized and pre-fabricated. This paper discusses optimal sustainable design strategies for the development of the Smart Envelope Package system. The main goal and result of this paper is to find a new product to reduce the energy consumption in old high-rise residential building in South Korea.
KEYWORDS: Smart Envelope Package, Energy Efficiency, High-rise residential building, EnergyPlus
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