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Article: Estimates of the impact of extreme heat events on cooling energy demand in Hong Kong

TitleEstimates of the impact of extreme heat events on cooling energy demand in Hong Kong
Authors
KeywordsCooling degree days
Electricity consumption
Extreme heat
Green building
Space cooling
Issue Date2019
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/renene
Citation
Renewable Energy, 2019, v. 142, p. 73-84 How to Cite?
AbstractTo better understand the relationship between energy consumption, and prevailing climatic condition, the present study uses Hong Kong’s observed air temperature records, end-use electricity consumption, and population datasets to: (a) investigate the spatial pattern of cooling energy requirement i.e. cooling degree days on a typical normal and extremely hot summer day using co-kriging geospatial mapping technique; (b) analyze the annual trend of cooling degree days in the city; and (c) quantify the impact of extreme heat events on the summer cooling energy requirements. Results revealed reasonable predictability of city-wide cooling degree days with the co-kriging method which uses two covariates i.e. “elevation of the weather station” and “building volume density within the 1000 m radius neighboring area”. Homogeneity and heterogeneity in cooling degree days’ distribution were found during the summer daytime and nighttime, respectively indicating the method’s ability to delineate the urban heat island effect with increased magnitude during extreme heat events. Quantitatively, the extreme heat events increased cooling degree days by 80–140% depending on the event type, a range consistent in recent years (2011–2015). Lastly, we provided the implications of our findings to building and urban design; and future energy planning.
Persistent Identifierhttp://hdl.handle.net/10722/274783
ISSN
2017 Impact Factor: 4.9
2015 SCImago Journal Rankings: 1.961
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorMorakinyo, T-
dc.contributor.authorRen, C-
dc.contributor.authorShi, Y-
dc.contributor.authorLau, K-
dc.contributor.authorTong, H-
dc.contributor.authorChoy, C-
dc.contributor.authorNg, E-
dc.date.accessioned2019-09-10T02:28:37Z-
dc.date.available2019-09-10T02:28:37Z-
dc.date.issued2019-
dc.identifier.citationRenewable Energy, 2019, v. 142, p. 73-84-
dc.identifier.issn0960-1481-
dc.identifier.urihttp://hdl.handle.net/10722/274783-
dc.description.abstractTo better understand the relationship between energy consumption, and prevailing climatic condition, the present study uses Hong Kong’s observed air temperature records, end-use electricity consumption, and population datasets to: (a) investigate the spatial pattern of cooling energy requirement i.e. cooling degree days on a typical normal and extremely hot summer day using co-kriging geospatial mapping technique; (b) analyze the annual trend of cooling degree days in the city; and (c) quantify the impact of extreme heat events on the summer cooling energy requirements. Results revealed reasonable predictability of city-wide cooling degree days with the co-kriging method which uses two covariates i.e. “elevation of the weather station” and “building volume density within the 1000 m radius neighboring area”. Homogeneity and heterogeneity in cooling degree days’ distribution were found during the summer daytime and nighttime, respectively indicating the method’s ability to delineate the urban heat island effect with increased magnitude during extreme heat events. Quantitatively, the extreme heat events increased cooling degree days by 80–140% depending on the event type, a range consistent in recent years (2011–2015). Lastly, we provided the implications of our findings to building and urban design; and future energy planning.-
dc.languageeng-
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/renene-
dc.relation.ispartofRenewable Energy-
dc.subjectCooling degree days-
dc.subjectElectricity consumption-
dc.subjectExtreme heat-
dc.subjectGreen building-
dc.subjectSpace cooling-
dc.titleEstimates of the impact of extreme heat events on cooling energy demand in Hong Kong-
dc.typeArticle-
dc.identifier.emailRen, C: renchao@hku.hk-
dc.identifier.authorityRen, C=rp02447-
dc.description.naturelink_to_subscribed_fulltext-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.renene.2019.04.077-
dc.identifier.scopuseid_2-s2.0-85065072803-
dc.identifier.scopuseid_2-s2.0-85065072803-
dc.identifier.hkuros302548-
dc.identifier.volume142-
dc.identifier.spage73-
dc.identifier.epage84-
dc.identifier.isiWOS:000474503000008-
dc.identifier.isiWOS:000474503000008-
dc.publisher.placeUnited Kingdom-

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