DOI QR코드

DOI QR Code

A study on the analytical method for calculating the inside air temperature transient and energy consumption load of the building using two different controllers

두개의 제어기를 사용한 건물 내부의 온도변화와 에너지소비량을 계산하기 위한 해석적 연구

  • Han, Kyu-Il (Department of Mechanical System Engineering, Pukyong National University)
  • 한규일 (부경대학교 기계시스템공학과)
  • Received : 2011.12.22
  • Accepted : 2011.12.30
  • Published : 2012.02.28

Abstract

Four different buildings having various wall construction are analyzed for the effect of wall mass on the thermal performance and inside building air and wall temperature transient and also for calculating the energy consumption load. This analytical study was motivated by the experimental work of Burch et al. An analytical solution of one-dimensional, linear, partial differential equations is obtained using the Laplace transform method, Bromwich and modified Bromwich contour method. A simple dynamic model using steady state analysis as simplified methods is developed and results of energy consumption loads are compared with results obtained using the analytical solution. Typical Meteorological Year data are processed to yield hourly average monthly values. This study is conducted using weather data from two different locations in Korea: Daegu having severe weather in summer and winter and Jeju having mild weather almost all year round. There is a significant wall mass effect on the thermal performance of a building in mild weather condition. Buildings of heavyweight construction with insulation show the highest comfort level in mild weather condition. A proportional controller provides the higher comfort level in comparison with buildings using on-off controller. The steady state analysis gives an accurate estimate of energy load for all types of construction. Finally, it appears that both mass and wall insulation are important factors in the thermal performance of buildings, but their relative merits should be decided in each building by a strict analysis of the building layout, weather conditions and site condition.

Keywords

Energy consumption load;Wall mass effect;Comfort level;Proportional control;Heavy weight construction

Acknowledgement

Supported by : 부경대학교

References

  1. ASHRAE, 1982. ASHRAE handbook of 1981 fundamentals. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Atlanta, pp. 21.1-21.9.
  2. Brigham, E.O., 1974. The fast Fourier transform. Prentice Hall, New Jersey, pp. 25-150.
  3. Burch, D. M., D.F. Kritz and R.S. Spain, 1984. The effect of wall mass on winter heating loads and indoor comfort-an experimental study. ASHRAE Transactions 90, Part 1, 94-121.
  4. Burch, D.M., S.A. Malcolm and K.L. Davis, 1984. The effect of wall mass on the summer space cooling of six test buildings. ASHRAE Transactions 90, Part 1, 5-20.
  5. Carslaw, H.S. and J.C. Jaeger, 1959. Conduction of heat in solids. Oxford Press, Great Britain, pp. 92-326.
  6. Crall, G.C., C.D. Jones, C.F. Sepsy and J.W. Jones, 1995. A computer simulation and validation of a building heating, ventilating and air conditioning system. ASHRAE Transactions 81, Part 1, 506-518.
  7. Duffie, J.A. and W.A. Beckman, 2000. Solar engineering of thermal processes, John Wiley & Sons, New York, pp. 28-110.
  8. Kreyszig, E., 2006. Advanced engineering mathematics. John Wiley & Sons, New York, pp. 220-270.
  9. Kusuda, T., 1976. Procedure employed by the ASHRAE task group for the determination of heating and cooling loads for building energy analysis. ASHRAE Transactions 82, Part 1, 305-314.
  10. Kusuda, T., 1981. A comparison of energy calculation procedures. ASHRAE Journal, 23, 21-24.
  11. Mitalas, G.P. and D.G. Stephenson, 1967. Room thermal response factors. ASHRAE Transactions 73, Part 1, III.2.1-III.2.10.
  12. Mitalas, G.P., 1968. Calculation of transient heat flow through walls and roofs. ASHRAE Transactions 74, Part 2, 182-188.
  13. Myers, G.E., 2001. Analytical methods in conduction heat transfer. McGraW-Hill, New York, pp. 175-205.
  14. Stephenson, D.G. and G.P. Mitalas, 1971. Cooling load calculations by thermal response factor method. ASHRAE Transactions 73, Part 1, III.1.1-III.1.7.
  15. Zabinski, M.P. and L. LoVerme, 1974. Fuel consumption in residential heating at various thermostat settings. ASHRAE Journal, 16, 67-70.