Passive Cooling of Air at Night by the Nocturnal Radiation in Loei, Thailand

Authors

  • Treeamorn Prommajak The fourth year undergraduated students in Physics, Department of Science, Faculty of Science and Technology, Loei Rajabhat University, Loei, Thailand, 42000
  • Jindaporn Phonruksa The fourth year undergraduated students in Physics, Department of Science, Faculty of Science and Technology, Loei Rajabhat University, Loei, Thailand, 42000
  • Surajitr Pramuang The fourth year undergraduated students in Physics, Department of Science, Faculty of Science and Technology, Loei Rajabhat University, Loei, Thailand, 42000

Keywords:

Nocturnal Cooling, Sky Radiator, Night Radiation

Abstract

This preliminary study aims to investigate experimentally the natural nocturnal cooling of air in a house model under the weather conditions of Loei Province, Thailand during two months of early rainy season. A house model volume about 10.0 m3 was constructed to measure the heat removal. The air was used as the working fluid for the heat convection from the sky radiator areas of 0.88, 1.78 and 2.66 m2 to the conditioned space. It was found that the temperature gap between the radiative plate of the sky radiator and ambient temperature in the clear sky condition was bigger than that in the cloudy sky condition. The radiative plate temperature was about 5 oC below ambient temperature making the inlet air temperature into the house model by 2-3 oC below ambient temperature that can be used air as the working fluid for the nocturnal cooling in Loei Province.

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How to Cite

Prommajak, T., Phonruksa, J., & Pramuang, S. (2014). Passive Cooling of Air at Night by the Nocturnal Radiation in Loei, Thailand. Journal of Renewable Energy and Smart Grid Technology, 3(1), 32–39. Retrieved from https://ph01.tci-thaijo.org/index.php/RAST/article/view/26057

Issue

Vol. 3 No. 1 (2008): January - June 2008

Section

Articles

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