Abstract
The orientation and shape of a building can influence energy efficiency in both heating and cooling mechanisms. Given the climatic conditions of Korea, many people are concerned about housing orientation and prefer south-oriented locations. As such, many housing complexes consist of a series of long narrow units that are south-facing. The purpose of this study is to investigate design alternatives for the layout of a building complex, size of households, width to depth ratios of floorplans, and design and type of façade; to examine energy efficiency using energy simulation programs; and to suggest diverse design alternatives for public rental housing, as well as energy-efficient options. The alternative housing units, which are more square-shaped than the typical long and rectangular type, resulted in higher energy costs. Simulation results show that as the solar radiation load increases or the window area increases due to plan alteration, there is simultaneously a significant increase and decrease in the cooling and heating loads, respectively. The performance of the suggested layout alteration greatly increased the heating load and slightly decreased the cooling load with similar total energy costs.
Highlights
Building sectors were responsible for 28% of global energy-related CO2 emissions in 2019 [1], while heating, ventilation, and air-conditioning systems accounted for 37% of the total energy consumption in buildings
In Korea, of the total energy produced, approximately 20% was consumed in buildings, half of which was consumed in residential buildings [2]
With a developer of a multi-family sustainable housing community in the USA, Cheng et al [18] indicate that the energy performance of multi-family buildings has not been thoroughly examined to include interactive effects of different variables; instead, the effect of each building and architectural variables on energy efficiency have been analyzed individually
Summary
Building sectors were responsible for 28% of global energy-related CO2 emissions in 2019 [1], while heating, ventilation, and air-conditioning systems accounted for 37% of the total energy consumption in buildings. It is emphasized to find optimal solutions for heating and cooling loads in the early stage of design [5] Architectural design features such as building orientation, shape, façade, and its envelope are found to have significant influence on energy loads and their trade-offs [6,7,8]. With a developer of a multi-family sustainable housing community in the USA, Cheng et al [18] indicate that the energy performance of multi-family buildings has not been thoroughly examined to include interactive effects of different variables; instead, the effect of each building and architectural variables on energy efficiency have been analyzed individually They proposed two scenarios for assessing ten building variables that seem to have an influence on energy consumption. To examine energy efficiency using energy simulation programs from Integrated Environmental Solutions (IES), Virtual Environment (VE) 2017 in order to suggest diverse design alternatives for public rental housing as well as energy-efficient options
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