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Impact of Shape Factor on Energy Demand, CO 2 Emissions and Energy Cost of Residential Buildings in Cold Oceanic Climates: Case Study of South Chile

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  • Manuel Carpio

    (Department of Construction Engineering and Management, School of Engineering, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
    UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile)

  • David Carrasco

    (Civil Engineer, Valdivia 5090000, Chile)

Abstract

The increase in energy consumption that occurs in the residential sector implies a higher consumption of natural resources and, therefore, an increase in pollution and a degradation of the ecosystem. An optimal use of materials in the thermal envelope, together with efficient measures in the passive architectural design process, translate into lower energy demands in residential buildings. The objective of this study is to analyse and compare, through simulating different models, the impact of the shape factor on energy demand and CO 2 emissions depending on the type of construction solution used in the envelope in a cold oceanic climate in South Chile. Five models with different geometries were considered based on their relationship between exposed surface and volume. Additionally, three construction solutions were chosen so that their thermal transmittance gradually complied with the values required by thermal regulations according to the climatic zone considered. Other parameters were equally established for all simulations so that their comparison was objective. Ninety case studies were obtained. Research has shown that an appropriate design, considering a shape factor suitable below 0.767 for the type of cold oceanic climate, implies a decrease in energy demand, which increased when considering architectural designs in the envelope with high values of thermal resistance.

Suggested Citation

  • Manuel Carpio & David Carrasco, 2021. "Impact of Shape Factor on Energy Demand, CO 2 Emissions and Energy Cost of Residential Buildings in Cold Oceanic Climates: Case Study of South Chile," Sustainability, MDPI, vol. 13(17), pages 1-20, August.
  • Handle: RePEc:gam:jsusta:v:13:y:2021:i:17:p:9491-:d:620394
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    References listed on IDEAS

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    1. Pablo Sarricolea & Mariajosé Herrera-Ossandon & Óliver Meseguer-Ruiz, 2017. "Climatic regionalisation of continental Chile," Journal of Maps, Taylor & Francis Journals, vol. 13(2), pages 66-73, November.
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    Cited by:

    1. Yao Xu & Liang Sun & Bo Wang & Shanmin Ding & Xichen Ge & Shuangrong Cai, 2023. "Research on the Impact of Carbon Emissions and Spatial Form of Town Construction Land: A Study of Macheng, China," Land, MDPI, vol. 12(7), pages 1-23, July.
    2. Meng, Xiangxin & Liu, Yan & Wang, Shangyu & Chen, Feiyu & Cao, Qimeng & Yang, Liu, 2022. "A fast solar architecture design method towards zero heating energy: A SHF-SLR-based model and its parameters," Energy, Elsevier, vol. 258(C).

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