A study of effect of natural ventilation on human comfort in residential buildings

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A study of effect of natural ventilation on human comfort in residential buildings


Author: Feng, Jing
Title: A study of effect of natural ventilation on human comfort in residential buildings
Degree: M.Eng.
Year: 2015
Subject: Dwellings -- Heating and ventilation -- China -- Hong Kong.
Natural ventilation.
Hong Kong Polytechnic University -- Dissertations
Department: Dept. of Building Services Engineering
Pages: ix, 59 pages : color illustrations
Language: English
InnoPac Record: http://library.polyu.edu.hk/record=b2826143
URI: http://theses.lib.polyu.edu.hk/handle/200/8234
Abstract: With sustainable development becoming the mainstream of the development around the world, energy conservation in building design is drawing more and more attention. Due to the large amount of HVAC systems, especially air-conditioning, are consuming, natural ventilation in buildings is of significant research value nowadays. Hong Kong has a suitable climate condition. The rational utilize of its climate conditions can achieve the best effect of natural ventilation.In this study, two approaches had been applied to accomplish the research goals. One was a questionnaire survey which investigated the subjective and objective factors that could affect thermal comfort while the other was a numerical simulation of natural ventilation based on computational fluid dynamics (CFD) software, where numerical model of different types of flats in a residential district located in Hong Kong were built. The indoor airflow distribution and its influence on thermal comfort in naturally ventilated rooms are critical factors in building design. As the key parameters regarding thermal comfort, air temperature, relative humidity, air velocity and age of air were all analyzed and simulated in the research. Results suggested that air velocity and mean age of air caused by natural ventilation were quite major influences on thermal comfort level. References for urban planners and architects were also provided at the end.

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