earth-to-air heat exchanger; educational building; thermal comfort; ducts; hot and humid climate; BIM; EnergyPlus
Abstract :
[en] Earth-to-air heat exchangers (EAHEs) are widely used to reduce the indoor temperature and associated cooling energy demand of buildings. This study investigated the potential reduction in indoor temperatures via energy-efficient ventilation through EAHEs in an existing architectural campus building (ACB) with an energy-efficient renovated building envelope in the hot and humid climate of Karachi, Pakistan. The building information modeling (BIM) program Autodesk Revit was used to develop a virtual ACB BIM model. An EnergyPlus parametric analysis of the ACB BIM model in DesignBuilder facilitated quantification of the influences of operating parameters such as pipe installation depth and pipe diameter for EAHEs with similar total pipe lengths and air-exchange rates on the performance of the EAHEs during the cooling season. A 3 m deep and 0.1 m diameter pipe layout in open space significantly reduces indoor temperature via a specific duct layout in an exemplary ACB. The results show that a pipe diameter above 0.1 m is unsuitable because of the reduction in convective heat transfer due to the increase in the pipe’s surface area and the decrease in pressure in the pipe. The findings of this study can be used to improve the indoor thermal comfort of buildings in climates with comparable properties.
Research Center/Unit :
Department of Architecture, Sungkyunkwan University, Korea
Disciplines :
Architecture
Author, co-author :
Bughio, Mushk; Sungkyunkwan University, Korea > Department of Architecture ; Dawood University of Engineering and Technology (DUET), Karachi, Pakistan > Department of Architecture
Bahale, Swati; Sungkyunkwan University, Korea > Department of Architecture
Mahar, Waqas Ahmed ; Université de Liège - ULiège > Urban and Environmental Engineering ; Balochistan University of Information Technology, Engineering and Management Sciences (BUITEMS), Quetta, Pakistan > Department of Architecture
Schuetze, Thorsten; Sungkyunkwan University, Korea > Department of Architecture
Language :
English
Title :
Parametric Performance Analysis of the Cooling Potential of Earth-to-Air Heat Exchangers in Hot and Humid Climates
Publication date :
26 September 2022
Journal title :
Energies
ISSN :
1996-1073
Publisher :
Multidisciplinary Digital Publishing Institute (MDPI), Basel, Switzerland
Special issue title :
Building Performance Simulation, Energy Efficiency and Renewable Energy Resources for Buildings 2022
Volume :
15
Issue :
19
Pages :
7054
Peer reviewed :
Peer Reviewed verified by ORBi
Development Goals :
3. Good health and well-being 9. Industry, innovation and infrastructure 7. Affordable and clean energy 13. Climate action
Indoor Environmental Quality (IEQ) and Energy Performance of Educational Buildings in Pakistan
Funders :
HEC - Higher Education Commission
Funding number :
HRDI-UESTP scholarship program Batch-III with the ref. no. 50022580
Funding text :
The authors acknowledge the Higher Education Commission (HEC) of Pakistan for providing the necessary funds and resources to complete the PhD studies of the first author under the HRDI-UESTP scholarship program Batch-III with the ref. no. 50022580. This study is a part of a PhD being carried out at SKKU, Korea. No funding was provided for the conduct and surveys of this research. The funding agency had no role in the selection of research topics, research domain, methodology, or results of this PhD.
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