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Human Responses to Transients Thermal Environments in Hot-humid Area of China

Author: ZhangJun
Tutor: MengQingLin；ZhangYuFeng
School: South China University of Technology
Course: Building Science,
Keywords: hot-humid area thermal transient environment thermal response
CLC: TU111
Type: Master's thesis
Year: 2011
Downloads: 83
Quote: 0
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Abstract


The pattern of human adaptation and regulation which has developed during a long evolutionary process can be inspired in highly variable practical environments. So, the person is no longer simply a passive recipient of the given thermal environment, but instead an active agent interacting with and adjusting to the person-environment system via multiple feedback loops. Compared with traditional steady-state thermal environment, the dynamic thermal environment adapts to the characteristics of human adaptation and regulation. To understand the mechanism of human response in built environment is helpful for the developments of the new building transfer space designs and technologies during thermal transient, at the same time, this research methods and production can be extended to other dynamic thermal environment fields.Taking the people from hot-humid area of China as an example, the present study is to obtain their thermal response characteristics by climate chamber study, which will provide basic data to correct and validates the theory model. Totally 30 healthy subjects in college age were recruited, who were born and grown up in the Zhujiang Delta and have lived in the mix-mode buildings in the recent 3 years, and the study was conducted in climate chamber in summer of 2009.A two-order polynomial relationship between mean skin temperature and thermal sensation was found by the climate chamber studies. Mean skin temperature is an important parameter in evaluating Thermal sensation. Human Thermal physiological response has thermal inertia during thermal transient, but Thermal psychological response shows more sensitively and quickly. The mean skin temperature corresponding to the neutral state was 33.2℃.The verification two node model and Wang, Fiala, s model proves that the Model based on experimental data of Europeans is not feasible to Human Thermal Response Prediction during Thermal Transients in Hot-humid Area of China. Combined with the thermal response characteristics of subjects, This paper modifies the original two node model from two aspects. They are the set point and the control equation. On this basis, it presents the thermal sensation model which applies to people in hot-humid area of China.

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