Title: Impact of urban heat island effect on building heating intensity in Tianjin, China

Authors: Fanchao Meng; Mingcai Li; Jun Guo; Lei Zhang; Jingfu Cao; Yuehao Chen

Addresses: Tianjin Climate Center, Tianjin Meteorological Bureau, Tianjin, China ' Tianjin Climate Center, Tianjin Meteorological Bureau, Tianjin, China ' Tianjin Climate Center, Tianjin Meteorological Bureau, Tianjin, China ' National Meteorological Information Center, China Meteorological Administration, Beijing, China ' Tianjin Climate Center, Tianjin Meteorological Bureau, Tianjin, China ' Tianjin Climate Center, Tianjin Meteorological Bureau, Tianjin, China

Abstract: The impact of urban heat island (UHI) on heating intensity of buildings was analysed based on the observed hourly temperature data during the heating periods from 2009 to 2017 in Tianjin, China. The results showed that the average annual heating intensity decreased 8.08% and 10.30% with the temperature in the urban centre increasing 1.46°C and 1.90°C compared with the suburban and outer suburban areas. The differences in the hourly mean heating intensity (HMHI) between the urban centre and the outer suburban areas reached its peak at 07:00 AM in the whole day, with the HMHI decreasing from the outer suburban to the urban centre. Overall, it is important to take into account the impact of the UHI effect on hourly variation characteristics of the heating intensity because energy use might be overestimated or underestimated at different times and urban areas if ignoring the UHI effect.

Keywords: UHI effect; degree-hours; heating intensity; heating period; Tianjin city; China.

DOI: 10.1504/IJGW.2020.107865

International Journal of Global Warming, 2020 Vol.21 No.1, pp.20 - 34

Received: 24 May 2019
Accepted: 27 Nov 2019
Published online: 26 Jun 2020 *

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