Analysis on combinations of indoor thermal microclimate parameters in radiant cooled residential buildings and drawing of new thermal comfort charts
| Autor: | Xuemin Sui, Xu Zhang |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Operative temperature
Meteorology 020209 energy Microclimate Thermal comfort 02 engineering and technology Building and Construction Radiant cooling Thermal 0202 electrical engineering electronic engineering information engineering Environmental science Relative humidity Ceiling (aeronautics) Mean radiant temperature |
| Zdroj: | Building Services Engineering Research and Technology. 37:66-84 |
| ISSN: | 1477-0849 0143-6244 |
| DOI: | 10.1177/0143624415596924 |
| Popis: | This paper proposed to discuss some issues about indoor microclimate parameters design in radiant cooled residential buildings. Based on the thermal comfort model, the relationships between low mean radiant temperature and other thermal microclimate parameters such as indoor air temperature, air velocity, and relative humidity were analyzed. The improved and reasonable combinations of four thermal microclimate parameters including radiant cooling surface temperature, air temperature, air velocity, and relative humidity were further derived. Furthermore, a number of new thermal comfort charts using radiant cooling surface temperature and air temperature as dominant parameters were drawn. The results show that the air temperature can be increased 1–3℃ within the recommended thermal comfort range when the mean radiant temperature is reduced 3℃. Under the design goal of thermal neutral, when the chilled ceiling surface temperature is in the range of 16–26℃, the air temperature should be set at 25.3–29.3℃; when the chilled floor surface temperature is in the range of 19–26℃, the air temperature should be set at 25.8–29.2℃. The design values of air velocity and relative humidity are not recommended to be changed, and still can follow the design standards for conventional all-air systems. Practical application : In this paper, some issues about indoor microclimate parameters design in radiant cooled buildings were discussed. A number of new thermal comfort charts using radiant cooling surface temperature and air temperature as dominant parameters were provided, and the design values of indoor air temperature, mean radiant temperature, air velocity, and relative humidity for radiant cooling system in residential buildings were also suggested. The research results can provide a more intuitive reference for the design of radiant cooling systems in residential buildings. |
| Databáze: | OpenAIRE |
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