The Testing Research on Prefabricated Building Indoor Thermal Environment of Earthquake Disaster Region

Abstract Prefabricated buildings (PBs) play an important role in the reconstruction process. However, the PBs actual indoor thermal environment located in earthquake disaster region occur deviation because of the result of various factor comprehensive roles, such as the more diverse climate and environmental conditions. According to this situation, field test and questionnaire are carried out under the winter climatic condition of Lushan County, China to explore the actual indoor thermal environment state. Measured and surveyed results show that the average indoor air temperature of the prefabricated classroom and the brick-concrete structure classroom are 10.17 ℃ and 9.29 ℃, respectively. Surface temperature of the prefabricated classroom changes synchronously with the air temperature while its indoor air temperature is little higher. The peak temperature difference of inner and outer surface can be reached to 5.9 ℃ and 5.24 ℃, respectively. Meanwhile, in the case of the overall average clothing thermal resistance of 1.57clo, ASHRAE scales for 0 thermal sensation vote is only 20%, and most people expect that temperature should be higher, which agree with that of the field test analysis. These results reveal that the actual indoor thermal environment inside the measured prefabricated building cannot meet the students’ thermal comfort requirements and sometimes it is also worse than that of brick-concrete classroom, due to low thermal inertia and poor thermal insulation of the in-walled light steel envelope.