Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
권호 표지

Prediction of the Summer Effective Sky Temperatrure during the Clear Day on Osan City

오산시의 맑은날 하절기 등가 하늘온도 예측

  • Byun, Ki-Hong (Dept. of Mechanical Robotics and Energy Engineering, Dongguk University)
  • 변기홍 (동국대학교 기계로봇에너지공학과)
  • Received : 2010.09.01
  • Accepted : 2010.10.25
  • Published : 2010.10.30
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this study is to predict the effective sky temperature on Osan City during the summer. The north latitude, east longitude of Osan City is $37^{\circ}06'$ and $127^{\circ}02'$. The altitude from the sea level is 48m. Empirical relations of the effective sky temperature suggested by Duffie and Beckman are compared on clear days. For the effective sky temperature prediction, data measured by the Korea Meteorological Administration is used as an input to the Bliss model. Both Hottel and Krondratyev model are used to calculate the water vapor emissivity. The results using Hottel's model match well with the empirical relation proposed by Bliss. The results show maximum, minimum, and average values depending on water vapor emissivity model. The maximum deviation is about 10K and is due to total emissivity model.

Keywords

References

  1. Duffie, J. A., Beckman, W. A., Solar Engineering of Thermal Processes, Wiley Interscience Publication, 1980, New York.
  2. 변기홍, 야간 하늘에 노출된 평판의 복사냉각 실험, 설비공학 논문집, 제17권, 제 6호, pp. 605-610, 2005.
  3. 변기홍, 주간 하늘에 노출된 평판에 의한 복사냉각 실험, 한국태양에너지학회 논문집, 제27권, 제 4호, pp. 11-17, 2007.
  4. A. Chebihi, K.H. Byun, J. Wen, T.F. Smith, Radiation Cooling of an Enclosure, Energy Conversion and Management, Vol. 47, pp. 229-252, 2006. https://doi.org/10.1016/j.enconman.2005.04.004
  5. Swinbank, W. C., "Long-Wave Radiation From Clear Skies," Quarterly J. of the Royal Meteorological Society, Vol. 89, 1963.
  6. Bliss, R. W., "Atmospheric Radiation Near the Surface of the Ground: A Summary for Engineers," Solar Energy, Vol. 5, No. 3, pp 103-120, 1961. https://doi.org/10.1016/0038-092X(61)90053-6
  7. Atwater, M. A., Ball, J. T., "Computation of IR Sky Temperature and Comparison with Surface Temperature," Solar Energy, Vol. 21, pp. 211-216, 1978. https://doi.org/10.1016/0038-092X(78)90023-3
  8. 고층기상월보, 8월 및 9월, 기상청, 2004.
  9. Kuehn, T.H., Ramsey, J.W., and Threlkels, J. L., Thermal Environmental Engineering, Prentice-Hall Inc., New Jersey, 1998.