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2022 Vol.13, Issue 3 Preview Page

General Article

Impact of window area and energy sources on the optimum insulation thickness and CO2 emission rate in residential buildings
Adel Mohamed Benaissa Tidadini1*
,
Lotfi Derradji2
,
Essaid Djakab3
,
Mohamed Amara2
1Doctoral Student, Laboratory Built in the Environment, University of Science and Technology Houari Boumediene (USTHB), 16111 Algiers, Algeria
2Dr., National Center of Studies and Integrated Research of the Building, CNERIB, Algiers, Algeria
3Dr., Laboratory Built in the Environment, University of Science and Technology Houari Boumediene (USTHB), 16111 Algiers, Algeria
*Corresponding Author
30 September 2022. pp. 304-327
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Abstract

This work aims to optimize thermal insulation thickness of external walls considering the impact of energy sources and window size, in order to reduce the energy consumption and CO2 emissions of residential buildings. Window size is considered as a new variable in the life cycle cost analysis model to evaluate its impact on the optimum insulation thickness. The window size is expressed as a percentage and varies from 0% to 50% of the total wall area. Heating and cooling loads through the external wall are calculated using the degree-day method for seven cities in Algeria. The results of the optimization show that the thickness of the insulation vary between 4.2 cm and 12.6 cm for the coldest region, and between 6.4 cm and 11.9 cm for the warmest region, according to the type of fuel and the size of the window. The improved economic model allow an easy and fast application of the optimization procedure of the insulation layer as a function of the window size. In addition to the economic benefit of the insulation, the carbon dioxide released in the atmosphere can be reduced up to 87.53% with the appropriate heating and cooling system.

Keywords
building envelope
life cycle cost analysis
optimal insulation thickness
window to wall ratio
carbon dioxide reduction
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Information
  • Publisher :Sustainable Building Research Center (ERC) Innovative Durable Building and Infrastructure Research Center
  • Publisher(Ko) :건설구조물 내구성혁신 연구센터
  • Journal Title :International Journal of Sustainable Building Technology and Urban Development
  • Volume : 13
  • No :3
  • Pages :304-327
  • Received Date : 2022-09-06
  • Accepted Date : 2022-09-26
  • DOI :https://doi.org/10.22712/susb.20220024
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