Study on Thermal Environment of Composed Air Carrying Energy Radiant Air-Conditioning System
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Air carrying energy radiant air-conditioning system (ACERS) is a new type of radiant air conditioning system. The ACERS has many installation forms, such as ceiling type, and the composite type of ceiling and sidewall together. The indoor thermal environment of composed ACERS in winter has been investigated by field test in this paper. When the indoor setting temperature is 16 °C and 18 °C, the indoor temperature is about 15.5–19 °C and 17–20 °C, and the floor temperature can be maintained at 13.3–15.2 °C and 13.5–15.8 °C, which can solve the problem of cold feet. Besides, through the analysis of the horizontal and vertical distribution of indoor temperature and humidity, it is found that indoor thermal and humidity environment is uniform. The horizontal temperature difference is less than 1 °C, and the vertical temperature difference is less than 3 °C. These results indicate that the composed ACERS can create a fairly uniform indoor environment and meet the thermal comfort requirement. In addition, by comparing the floor temperature inside and outside the table, the results show that the shelter of desks or chairs in office buildings have great influence on floor temperature, and the radiant sidewall can largely increase the floor temperature. This research verifies the feasibility of winter heating of the composite ACERS, and is helpful for the reasonable heating parameters design and operation of the novel system in the future.
KeywordsRadiant system Heating Thermal environment
The study was financed by the National Natural Science Foundation of China (Grant no. 51378186) and National Key Technology Support Program (Grant no. 2015BAJ03B01).
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