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Title: An investigation of the adaptive thermal comfort research for residential buildings in China 'hot summer and cold winter' zone
Author: Wang, Xi
Awarding Body: University of Sheffield
Current Institution: University of Sheffield
Date of Award: 2013
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China's residential market has been booming since the time of the early twenty-first century, with an industrial structural transformation from quantitative to qualitative development. China's climate variability creates a unique relationship between occupancy and building environment, requiring thermal environmental comfort research and energy efficiency residential building context. The aim of this research is to improve low-energy apartment standards in China using multidisciplinary interactive research directly focused on actual occupants' thermal comfort under the regional climatic conditions and applying adaptive thermal comfort theory. This PhD research is based on field study of a questionnaire survey and on-site measurement. The actual building environment assessment presents the research gap of adaptive coefficient between rational thermal approach and adaptive thermal approach. The heat-balance approach of Fanger's 'Predicted Mean Vote' (PMV) comfort model is usually incorporated into the 'Predicted Percentage of Dissatisfied' (PPD) model. The adaptive approach of 'adaptive Predicted Mean Vote' (aPMV) model is based on Yao's research, taking into account factors such as psychological and behavioral adaptations. There are three main conclusion sections in this thesis, including regional adaptive thermal comfort research, occupants' subjective adaptive preference and parametric study of building design in the 'Hot Summer and Cold Winter' (HSCW) zone. Six conclusion points are extended: (1) According to the questionnaire-based survey, overcooling causes serious concern for thermal comfort in cold winters in the HSCW zone, which is similar to the overheating potential of the worst energy consumption impact during hot summers in residential buildings. (2) The specific adaptive coefficient is necessary for obtaining regional adaptive thermal comfort temperature ranges with neutral indoor air temperatures assessment. (3) The occupants' personal characteristics and social backgrounds; the statistical analysis suggested that a person's age, gender, education level and building layout environment strongly relate to the control of indoor acceptable air temperature, and the margin limit of thermal comfort also has a strong relationship with the weather data of monthly outdoor air temperatures. (4) Adaptive thermal environment control have increased energy usage compared to energy efficiency control, but is lower than current healthy housing standards of energy consumption. (5) The question of decreasing the building shape coefficient does not has a decisive effect for energy conservation, and the building performance of energy consumption per unit indoor floor area has a significant impact on energy savings. (6) The parametric analyses also suggested that the subjective nature of people participating has a great influence on the relationship between objective building design and building performance results.
Supervisor: Altan, Hasim ; Kang, Jian Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available