Abstract
Thermal comfort sensation is different among people. Different climatic areas, such as the tropics and cold regions, may require different thermal parameters. This study analyses the thermal sensation of occupants in domestic buildings in three regions of China (Jinan, Xining, and Guangzhou). Filed measurements were conducted in selected domestic buildings located in Jinan, Xining and Guangzhou. The studied parameters include ambient air temperature, indoor air temperature, indoor radiation temperature, airflow velocity, predicted mean vote (PMV) and actual mean vote (AMV). In addition, a survey to investigate the actual comfort levels of occupants was completed by the occupants. The main aim is to identify the differences in thermal sensation of occupants living in different regions and in different types of buildings. Moreover, this study further analyses the effects of the ambient environment on indoor thermal comfort. The correlation between the actual thermal sensation and the predicted thermal sensation is discussed. Results show that the ambient environment has a greater effect on the thermal comfort level of naturally ventilated houses than those ventilated by air conditioners. Moreover, Fanger’s predicted mean vote (PMV) model is good at predicting the thermal sensation of occupants living in air-conditioned houses; however, the model is not a good predictor for occupants living in naturally ventilated houses. Occupants in naturally ventilated houses have a wider range of thermal acceptance than those living in air-conditioned houses.
Highlights
Thermal comfort is defined as “the condition of the mind in which satisfaction is expressed with the thermal environment” [1]
This study investigated domestic thermal comfort based on field studies carried out in three cities in China: Xining in the severe cold climate zone, Jinan in the cold climate zone and Guangzhou in the hot summer and warm winter climate zone
The heat power in different bodies will change with time and place, International Journal of Sustainable and Green Energy 2019; 8(3): 45-55 the mean radiant temperature, which is used to describe the average value of the overall heat exchange, has been defined by McIntyre [22] as ‘uniform temperature of an imaginary enclosure in which the radiant heat transfer from the human body is equal to the radiant heat transfer in the actual non-uniform enclosure.’
Summary
Thermal comfort is defined as “the condition of the mind in which satisfaction is expressed with the thermal environment” [1]. 46 Zhen Peng et al.: Investigation of Thermal Sensation of Occupants in Domestic Buildings Located in Different Regions of China divided into five climatic zones, namely severe cold, hot summer and cold winter, temperate, and hot summer and warm winter (Figure 1). These five climate zones are defined based on the coldest average monthly dry-bulb temperature and the hottest average monthly dry-bulb temperature (Table 1). The main aim of this study was to analyze the thermal sensation of participants and identify differences of thermal comfort among the three areas, and between naturally ventilated and air-conditioned buildings. To compare the predicted values of thermal comfort preferences of occupants in naturally ventilated and air-conditioned buildings in the three areas
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