Scale of Human Thermal Sensation Using Seasonal Anchor Method: a Chinese Case Study

Authors: Dandan Yu*, , Shan Li, East China Normal University
Topics: China
Keywords: human thermal comfort,thermal index; climatic comfort,climate-comfortable period, THI,WEI
Session Type: Lightning Paper
Day: 4/6/2019
Start / End Time: 8:00 AM / 9:40 AM
Room: Marshall North, Marriott, Mezzanine Level
Presentation File: No File Uploaded

Climatic comfort or human thermal comfort has a far-reaching impact on human settlement and human activities. A number of thermal indexes are widely applied in the fields of architectural design, urban planning, human health, and tourism development. As an indispensable and critical part of climatic comfort assessment, scale of thermal sensation not only greatly affects the validity of a thermal index, but also makes the comparison among different thermal indexes possible. At present, a few traditional scales of thermal sensation are generally used for the climatic comfort assessment in different regions without any localized adjustment. Alternatively, experimental investigation and questionnaire survey are adopted to formulate the scale of thermal sensation for a certain area. Therefore, a new approach named “seasonal anchor method”is proposed in this paper, which includes 4 steps --“grading, naming, anchoring, and projecting”. Furthermore, based on the long term daily meteorological data (from 1981 to 2010) from 814 national basic meteorological observing stations throughout mainland China, a case study is carried out. In this study, a 7-levels scale of thermal sensation, which includes“torrid, hot, warm, neutral, cool, cold, and frozen”, is proposed. Meanwhile, the threshold values of each level of thermal sensation for THI (temperature and humidity index) and WEI (wind effect index), which can be adopted as a nationally standard, are generated. Finally, climate-comfortable period and climate-uncomfortable period in mainland China are evaluated, which brings us some meaningful discoveries.

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