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Experimental research on an air-conditioning system based on evaporative cooling with radiant cooling by capillary tube mats.

[In Chinese. / En chinois.]

Author(s) : HUANG X., YAN Z., XUAN Y.

Type of article: Article

Summary

This paper gives a balanced load distribution between evaporative cooling and radiant cooling based on the engineering design of the composite air-conditioning system advanced by the authors. It tests the fresh air system, high temperature chilled water system and indoor temperature and humidity environment on the composite test-bed under summer air-conditioning conditions. The test results show that when the air-conditioning systems run in the summer of mid-humidity area whose supply water temperature is 19°C and supply air temperature is 17°C, the maximum temperature difference is less than 2°C at all sections between 0.1 and 1.1 m above the floor, and the indoor temperature is about 26 to 26.5°C at 1.1 m. The experimental results also show that the gradient of temperature is less than 2°C/m between the heights of 0.1 and 1.1 m and is less than 1°C/m between 1.1 and 2.7 m, meanwhile indoor relative humidity is in a range of 53.3 to 65.4%. So the experimental results illustrate that the composite air-conditioning system can meet thermal comfort for the occupants. In addition, the mean surface temperature of radiant cooling panel is 21.75 to 21.9°C, which avoids the risk of condensation, because the ceiling surface temperature is higher than the dew point temperature.

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Pages: pp. 34-41

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Details

  • Original title: [In Chinese. / En chinois.]
  • Record ID : 2010-1243
  • Languages: Chinese
  • Source: HV & AC - vol. 39 - n. 228
  • Publication date: 2009/09

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