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A Procedure for Computing Conduction Time Series Factors by Numerical Method

전도 시계열 계수를 수치해석으로 구하는 방법

  • Byun, Ki-Hong (Department of Mechanical Robotics and Energy Engineering, Dongguk Univ-Seoul)
  • 변기홍 (동국대학교 공과대학 기계로봇에너지공학과)
  • Received : 2017.08.24
  • Accepted : 2017.10.30
  • Published : 2017.10.30

Abstract

The purpose of this paper is to propose the way of computing conduction time series factors (CTSF) using numerical method. After the accuracy of the numerical solution procedure being verified, the method is applied to the wall type 24 and roof type 14 of ASHARE to find the conduction time series coefficients, so called conduction time series factors. The results agree well with the values presented in the ASHRAE handbook. The method proposed can be easily applied to find unknown CTSF for more complex structures. It provides information about the temperature changes at a given location and time, thus validity of generated CTSF can be checked easily.

Keywords

References

  1. Spitler, J. D. and Fisher, D. E., Development of Periodic Response Factors for Use with the Radiant Time Series Method, ASHRAE Transactions, Vol. 105, Part 2, SE-99-1-1, 1999.
  2. Spitler, J. D. and Fisher, D. E., On the Relationship between the Radiant Time Series and Tranfer Function Methods for Design Cooling Load Calculations, International Journal of Heating, Ventilating, Air-Conditioning and Refrigerating Research, Vol. 5, pp. 125-138, 1999.
  3. Wang, S. and Chen, Y., A Simple Procedure for Calculating Thermal Response Factors and Conduction Transfer Functions of Multilayer Walls, Applied Thermal Engineering, Vol. 1, No. 22, pp. 333-338, 2002.
  4. Mitalas, G. P. and Stephenson, D. G., Cooling Load Calculation by Thermal Response Factor, ASHRAE Transactions, Vol. 73, Part 2, III 2.1-2.10, 1967.
  5. Ouyang, K. and Haghighat, F., A Procedure for Calculating Thermal Response Factors of Multilayer Walls-state-space Method, Buling Environment, Vol. 26, No. 2, pp. 173-177, 1991.
  6. Davies, M. G., Wall Transient Heat Flow using Time Domain Analysis, Building Environment, Vol. 32, No. 5, pp. 427-446, 1997. https://doi.org/10.1016/S0360-1323(97)00007-3
  7. Spitler, J. D. and Nigusse, B. A., Refinements and Improvements to the Radiant Time Series Method, ASHRAE Transactions, Vol. 116, Part 1, pp. 542-599, OR-10-057, 2010.
  8. Byun, K. H., The Analysis of Green Roof during the Summer by Numerical Method, Journal of the Korean Solar Energy Society, Vol. 36, No. 5, pp. 51-61,2016. https://doi.org/10.7836/kses.2016.36.5.051
  9. Incropera, F. P., Bergman, T. L, and Lavine, A. S., Foundations of Heat Transfer, John Wiley & Sons, Inc., 2013.
  10. ASHRAE Fundamentals Handbook, ASHRAE, 2005 and 2013.