Study on the method of determining indoor radiant temperature under strong radiant heat source

¹ College of Architecture, Xi’an University of Architecture and Technology, 710055 Xi’an Shaanxi, China
² State Key Laboratory of Green Building, Xi’an University of Architecture and Technology, 710055 Xi’an Shaanxi, China
³ College of Architecture and Civil Engineering, Xi’an University of Science and Technology, 710054 Xi’an Shaanxi, China

^* Corresponding author’s email: songbing@xauat.edu.cn

Abstract

How to obtain the mean radiant temperature and radiant temperature asymmetry more accurately is the basis for the study of the indoor thermal environment under the influence of external windows. It is also a prerequisite for the field study of the indoor thermal environment of buildings. This study conducted a field experiment on the suitability and limitations of different methods for determining indoor mean radiant temperature and radiant temperature asymmetry under the strong radiant heat source caused by short-wave radiation. It was found that the mean radiant temperature and the radiant temperature asymmetry obtained by measuring the surface temperature of the enclosed space could better reflect the real indoor long-wave radiation situation. Methods based on the black globe temperature and net radiometer were both affected by the solar short-wave radiation. The results of this study could provide a theoretical basis for the impact of windows on the indoor thermal environment.