Deviation of design air-conditioning load based on weather database of reference weather year and actual weather year
In Japan, in order to determine the capacity of air-conditioning equipment, designers usually use the weather database of Reference Weather Year (RWY) to obtain the design air-conditioning load by using software such as New HASP/ACLD and Building Energy Simulation Tool (BEST) that are often used in...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2020-10-01
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| Series: | Energy and Built Environment |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666123320300362 |
| _version_ | 1811270751627509760 |
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| author | Z. Jiao J. Yuan C. Farnham K. Emura |
| author_facet | Z. Jiao J. Yuan C. Farnham K. Emura |
| author_sort | Z. Jiao |
| collection | DOAJ |
| description | In Japan, in order to determine the capacity of air-conditioning equipment, designers usually use the weather database of Reference Weather Year (RWY) to obtain the design air-conditioning load by using software such as New HASP/ACLD and Building Energy Simulation Tool (BEST) that are often used in Japan. In recent years, with the global warming due to climate change, the weather database used to calculate air conditioning load also changes. Thus, in order to determine an appropriate capacity of air-conditioning equipment for energy conservation of buildings, the deviation of design air-conditioning load calculated using the weather database of RWY and Actual Weather Year (AWY) should be discussed.In this paper, New HASP/ACLD was used to calculate the building heat loads of eight major Japanese cities over 30 years (1981–2010) between RWY and AWY. The heat load at an exceedance probability of 2.5% is defined as the design air-conditioning load in this paper. Comparing the design air-conditioning load obtained from RWY and AWY, it is shown that it is not necessarily the most appropriate when using the RWY to calculate the design air-conditioning load, especially for heating load in winter. Additionally, it is also shown that the annual heating load time ratio has decreased and the annual cooling load time ratio has increased over the 30 years. |
| first_indexed | 2024-04-12T22:07:42Z |
| format | Article |
| id | doaj.art-a6bf4f06d1ed40a9b3ab1c334e19445c |
| institution | Directory Open Access Journal |
| issn | 2666-1233 |
| language | English |
| last_indexed | 2024-04-12T22:07:42Z |
| publishDate | 2020-10-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Energy and Built Environment |
| spelling | doaj.art-a6bf4f06d1ed40a9b3ab1c334e19445c2022-12-22T03:14:53ZengKeAi Communications Co., Ltd.Energy and Built Environment2666-12332020-10-0114417422Deviation of design air-conditioning load based on weather database of reference weather year and actual weather yearZ. Jiao0J. Yuan1C. Farnham2K. Emura3Dept. of Housing and Environmental Design, Graduate School of Human Life Science, Osaka City University, Osaka 558-8585, JapanDept. of Architecture and Civil Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan; Corresponding author.Dept. of Housing and Environmental Design, Graduate School of Human Life Science, Osaka City University, Osaka 558-8585, JapanDept. of Housing and Environmental Design, Graduate School of Human Life Science, Osaka City University, Osaka 558-8585, Japan; Corresponding author.In Japan, in order to determine the capacity of air-conditioning equipment, designers usually use the weather database of Reference Weather Year (RWY) to obtain the design air-conditioning load by using software such as New HASP/ACLD and Building Energy Simulation Tool (BEST) that are often used in Japan. In recent years, with the global warming due to climate change, the weather database used to calculate air conditioning load also changes. Thus, in order to determine an appropriate capacity of air-conditioning equipment for energy conservation of buildings, the deviation of design air-conditioning load calculated using the weather database of RWY and Actual Weather Year (AWY) should be discussed.In this paper, New HASP/ACLD was used to calculate the building heat loads of eight major Japanese cities over 30 years (1981–2010) between RWY and AWY. The heat load at an exceedance probability of 2.5% is defined as the design air-conditioning load in this paper. Comparing the design air-conditioning load obtained from RWY and AWY, it is shown that it is not necessarily the most appropriate when using the RWY to calculate the design air-conditioning load, especially for heating load in winter. Additionally, it is also shown that the annual heating load time ratio has decreased and the annual cooling load time ratio has increased over the 30 years.http://www.sciencedirect.com/science/article/pii/S2666123320300362Design air-conditioning loadAnnual air-conditioning load time ratioReference weather yearActual weather yearNew HASP/ACLD |
| spellingShingle | Z. Jiao J. Yuan C. Farnham K. Emura Deviation of design air-conditioning load based on weather database of reference weather year and actual weather year Energy and Built Environment Design air-conditioning load Annual air-conditioning load time ratio Reference weather year Actual weather year New HASP/ACLD |
| title | Deviation of design air-conditioning load based on weather database of reference weather year and actual weather year |
| title_full | Deviation of design air-conditioning load based on weather database of reference weather year and actual weather year |
| title_fullStr | Deviation of design air-conditioning load based on weather database of reference weather year and actual weather year |
| title_full_unstemmed | Deviation of design air-conditioning load based on weather database of reference weather year and actual weather year |
| title_short | Deviation of design air-conditioning load based on weather database of reference weather year and actual weather year |
| title_sort | deviation of design air conditioning load based on weather database of reference weather year and actual weather year |
| topic | Design air-conditioning load Annual air-conditioning load time ratio Reference weather year Actual weather year New HASP/ACLD |
| url | http://www.sciencedirect.com/science/article/pii/S2666123320300362 |
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