Effect of Building Materials on Numerical Simulation of the District Heating within the Typical Building in Beijing

Abstract:

In order to reduce energy consumption and analyze energy-saving potential of building materials, the principle of the energy equilibrium is applied to establish the relationship between outdoor temperature, supply and return water temperature of heating system. A numerical simulation model of supply and return water temperature is deduced. Based on the predicted air temperatures and observed indoor temperature from Haiyuan community,a simulation experiment is executed. The experiments show that the root mean square error between simulated indoor temperature and required temperature (20°C) is 0.26°C, root mean square error between predicted and observed supply water temperature is 3.76°C. When the heat transfer coefficient is decreased by 10%, the predicted supply water temperature and return water temperature is decreased 3.8% and 3.2%, respectively. This means the prediction model has a good quality.

• Periodical: Applied Mechanics and Materials (Volumes 246-247)
• Pages: 360-364
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.246-247.360
• Online since: December 2012
• Authors: Fao Feng, Xun Li, De Ping Ding, Zhuang Xie
• Keywords: Building Material, District Heating, Principle of Energy Equilibrium, Return Water Temperature, Supply Water Temperature

References

[1] P.F. Jie D.Y. L and N. Zhu: Advance Materials Research, Vol. 490-495(2012), pp.1475-1480.

[2] G. Zhao ,J. Xu: Applied Mechanics and Materials, Vol. 130-134(2012), pp.3476-3480.

[3] C. Guo,J. Yao: Applied Mechanics and Materials, Vol. 164(2012), pp.93-96.

[4] P. Valdimarsson: University of Iceland, 115(1993), 37-82.

[5] N. Yildirim, M. Toksoy and G. Gokcen.: Energy and Buildings, 38(2006): 1111-1119.

[6] M. Nappa: Geothermal Training Workshop at University of Iceland , 27. 9. 2000, 1-30.

[7] S. Y Fan ,Y. R Guo and M. Chen: Plateau Meteorology, 2008, 27(6): 1181-1188(in Chinese).

[8] H. Y Lei,P. Valdimarsson: Proceedings, Thirty-Fourth Workshop on Geothermal Reservoir Engineering, Stanford University, California, March 9-11, (2009).