Thermal comfort; Global warming; Overheating; Cooling strategy; Climate change
Abstract :
[en] Over the last decades overheating in buildings has become a major concern. The situation is expected to worsen due to the current rate of climate change. Many efforts have been made to evaluate the future thermal performance of buildings and cooling technologies. In this paper, the term “climate change overheating resistivity” of cooling strategies is defined, and the calculation method is provided. A comprehensive simulation-based framework is then introduced, enabling the evaluation of a wide range of active and passive cooling strategies. The framework is based on the Indoor Overheating Degree (IOD), Ambient Warmness Degree (AWD), and Climate Change Overheating Resistivity (CCOR) as principal indicators allowing a multi-zonal approach in the quantification of indoor overheating risk and resistivity to climate change. To test the proposed framework, two air-based cooling strategies including a Variable Refrigerant Flow (VRF) unit coupled with a Dedicated Outdoor Air System (DOAS) (C01) and a Variable Air Volume (VAV) system (C02) are compared in six different locations/climates. The case study is a shoe box model representing a double-zone office building. In general, the C01 shows higher CCOR values between 2.04 and 19.16 than the C02 in different locations. Therefore, the C01 shows superior resistivity to the overheating impact of climate change compared to C02. The maximum CCOR value of 37.46 is resulted for the C01 in Brussels, representing the most resistant case, whereas the minimum CCOR value of 9.24 is achieved for the C02 in Toronto, representing the least resistant case.
Research center :
Sustainable Building Design Lab
Disciplines :
Energy
Author, co-author :
Rahif, Ramin ; Université de Liège - ULiège > Département ArGEnCo > Techniques de construction des bâtiments
Hamdy, Mohamed; Norwegian University of Science and Technology > Department of Civil and Environmental Engineering
Homaei, Shabnam; Norwegian University of Science and Technology > Department of Civil and Environmental Engineering
Zhang, Chen; Aalborg University > Department of the Built Environment
Holzer, Peter; Institute of Building Research and Innovation, Vienna, Austria
Attia, Shady ; Université de Liège - ULiège > Département ArGEnCo > Techniques de construction des bâtiments
Language :
English
Title :
Simulation-based framework to evaluate resistivity of cooling strategies in buildings against overheating impact of climate change
Publication date :
15 January 2022
Journal title :
Building and Environment
ISSN :
0360-1323
eISSN :
1873-684X
Publisher :
Elsevier, United Kingdom
Volume :
208
Pages :
108599
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
[OCCuPANt] Impacts of climate change on buildings in Belgium during summer
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