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ID 66025
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Author
Liu, Shanshan Department of Architecture and Building Engineering, Tokyo Institute of Technology
Levinson, Ronnen Heat Island Group, Lawrence Berkeley National Laboratory
Narumi, Daisuke Graduate School of Environmental and Life Science, Okayama University
Abstract
Densely built areas with poor thermal insulation suffer from high thermal environmental risks and generally consume high energy in summer. Determining the relationship between density and energy consumption is necessary, particularly when implementing urban heat island (UHI) countermeasures. This study evaluated the effects of density and UHI countermeasures on the energy consumption and indoor thermal comfort of a detached house in a typical densely built wooden house area in Yokohama City, Japan. Three densities and six countermeasures were considered. Annual hourly simulations based on the SCIENCE-Vent thermal environment simulation model yielded the following results: in densely built wooden house areas, the energy consumption and thermal discomfort increased with density. The green roof yielded the largest energy savings in the cooling and heating seasons, demonstrating the highest annual energy savings with 5.7%. Density had little impact on rooftop countermeasures, but the effect of the high-reflectance walls increased with density, and the reduction in annual energy consumption (air conditioning and lighting) is 2.6%, 3.0%, 3.6% in 37%, 47%, and 59% density cases, respectively. The impact of thermal countermeasures on indoor thermal comfort varied according to the thermal control mechanism.
Keywords
urban heat island
densely built area
energy saving
indoor thermal comfort
heat countermeasure
Published Date
2023-10-16
Publication Title
Atmosphere
Volume
volume14
Issue
issue10
Publisher
MDPI
Start Page
1566
ISSN
2073-4433
Content Type
Journal Article
language
English
OAI-PMH Set
岡山大学
Copyright Holders
© 2023 by the authors.
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publisher
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.3390/atmos14101566
License
https://creativecommons.org/licenses/by/4.0/
Citation
Liu, S.; Levinson, R.; Narumi, D. Numerical Analysis of Various Heat Countermeasures: Effects on Energy Consumption and Indoor Thermal Comfort in Densely Built Wooden House Area. Atmosphere 2023, 14, 1566. https://doi.org/10.3390/atmos14101566
Funder Name
Japan Society for the Promotion of Science
助成番号
JP18KK0123
22H01649