RESEARCH ON WINTER INDOOR CALCULATED TEMPERATURE FOR RESIDENTIAL BUILDINGS IN STRONG SOLAR RADIATION REGIONS OF WESTERN CHINA

Zhang Shuai; Zhu Yu; Liu Yan; Yang Liu; Zhu Yiyun; Gao Siru

doi:10.19912/j.0254-0096.tynxb.2025-0669

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Acta Energiae Solaris Sinica ›› 2026, Vol. 47 ›› Issue (9) : 395-402. DOI: 10.19912/j.0254-0096.tynxb.2025-0669

RESEARCH ON WINTER INDOOR CALCULATED TEMPERATURE FOR RESIDENTIAL BUILDINGS IN STRONG SOLAR RADIATION REGIONS OF WESTERN CHINA

Zhang Shuai^1,2, Zhu Yu¹, Liu Yan^2,3, Yang Liu^2,3, Zhu Yiyun¹, Gao Siru^2,3

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Abstract

To obtain accurate winter indoor calculated temperature for strong solar radiation regions of western China, data from questionnaire surveys and field tests in three typical cities were collected and statistically analyzed. Through evaluating the clothing adjustment behavior and human thermal sensation, the relationships between operative temperature and clothing insulation/mean thermal sensation, respectively, were established under various heating conditions. Then, the neutral temperature was found to be 20.2 ℃ for continuous heating buildings and the lower limit of acceptable temperature was 11.7 ℃ for non-continuous heating buildings. Based on this, it is proposed that the appropriate winter indoor calculated temperatures should be set at constant values of 20.0 ℃ and 12.0 ℃, respectively. Furthermore, for passively heated rooms, taking Lhasa as a case study, an hourly indoor calculated temperature model was developed by integrating the daily fluctuation range of winter indoor operative temperatures （10-14 ℃） obtained from dynamic simulation and the hourly temperature cycle processing method specified in the current thermal design code. These findings provide essential parameter support for optimizing building thermal design in strong solar radiation regions of western China.

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thermal comfort / thermal insulation / dynamic models / indoor calculated temperature / strong solar radiation regions

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Zhang Shuai, Zhu Yu, Liu Yan, Yang Liu, Zhu Yiyun, Gao Siru. RESEARCH ON WINTER INDOOR CALCULATED TEMPERATURE FOR RESIDENTIAL BUILDINGS IN STRONG SOLAR RADIATION REGIONS OF WESTERN CHINA[J]. Acta Energiae Solaris Sinica. 2026, 47(9): 395-402 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0669

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