. Department of Building Science, Tsinghua University, Beijing 100084, China.. Key Laboratory of Eco Planning & Green Building, Ministry of Education, Tsinghua University, Beijing 100084, China.. State Key Laboratory of Green Building in Western China, Xi’an University of Architecture and Technology, Xi’an 710055, China.. School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China.. College of Architecture, Xi’an University of Architecture and Technology, Xi’an 710055, China