# A Study on the Development of Building Envelope Elements for Energy Reduction in Multi- Rise Residential Buildings

• Lee, Myung Sik (Division of Architectural Engineering, Dongguk University)
• Accepted : 2016.12.07
• Published : 2016.12.30
• 29 24

#### Abstract

It is necessary to improve the performance of buildings with respect to the energy efficiency while improving the quality of occupants' lives through a sustainable built environment. During the design and development process, building projects must have a comprehensive, integrated perspective that seeks to reduce heating, cooling and lighting loads through climate-responsive designs. The aim of this study is to find an optimal thermal transmittance (U-values) for building envelope elements for low energy multi-rise residential buildings in the early design phase in Korea. The study found that using small U-values of $0.15w/m^2K$ for exterior walls, ceilings and floors and $1.0w/m^2K$ for south and north facing windows has resulted in energy reduction of 22.1%-59.4% in the south facing rooms and 43%-77.6% of the north facing rooms. It has also found the energy load reduction potential of using small U-values are higher on the north facing rooms. The findings of this study can be suggested to be used as a baseline case for low energy consumption studies. It can also be used to determine appropriate envelope materials and insulation values.

#### Keywords

Building Envelope;Residential Building;Energy Reduction;U-value

#### Acknowledgement

Supported by : Korea Evaluation Institute of Industrial Technology (KEIT)

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