Optimization Research of Insulating Layer Thickness for Rural Residence’s Exterior Wall in Northeast Severe Cold Regions Based on Life Cycle Cost
- 245 Downloads
As one of the essential components of rural residence’s envelope in severe cold regions, external wall’s heat transfer consumption accounts for about 40% of total heat consumption. Thermal insulation technology for exterior wall is one important method to improve building thermal performance. Meanwhile, the increasing of insulating layer thickness also raises the construction cost. It is necessary to determine the optimal thickness of external insulating layer from the perspective of life cycle cost. This paper, selecting the composite wall structure as research object and taking life cycle cost of external wall as evaluation index, establishes the GenOpt–EnergyPlus optimization platform by coupling EnergyPlus and GenOpt software to carry out the optimization. In the analysis, three types of insulation materials were selected to analysis. Considering that the length of life cycle may affect the effective utilization rate of operation and construction cost, three types of life cycle span are set, including 10, 20, and 30 years. Through the analysis, the optimal insulating layer thickness and changing rule of external wall under different conditions were discussed, which provides a basis for the selection of insulating layer’s material and thickness.
KeywordsSevere cold regions Rural residence’s exterior wall Thickness of insulating layer Life cycle cost
The project is supported by the Fundamental Research Funds for the Central Universities (Number G2018KY0308) and the National Natural Science Foundation of China (Number 51378136).
- 1.Zhao, H., Jin, H.: Research on the local optimum eco-technologies of rural housing in the chill region of China. J. Harbin Inst. Technol. 39(2), 235–237, 291 (2007)Google Scholar
- 2.Shao, T.: The energy-saving optimization for rural house in northeast severe cold regions. Doctoral Dissertation of Harbin Institute of Technology, Harbin (2018)Google Scholar
- 3.Tian, G.H., Lv, H.L., Huang, J.E.: The definition of economical thickness for external wall insulation system of rural houses. Constr. Econ. 36(4), 87–90 (2015)Google Scholar
- 4.Jin, H., Ling, W.: External wall structure of green rural houses in Daqing, China, based on life cycle and ecological footprint theories. Front. Archit. Res. 4(3), 212–219 (2015)Google Scholar
- 5.Li, J.P., Li, X.Z., Wang, N.: Analysis on optimum external wall insulation thickness for new rural residential buildings in Northwest Region. Build. Energy Effic. 44(3), 33–36 (2016)Google Scholar
- 6.Wang, H.H., Wu, W.W.: Optimizing insulation thickness of external walls for residential buildings. J. Chongqing Univ. 31(8), 937–941 (2008)Google Scholar
- 9.Jin, H., Shao, T.: Study on optimal design of energy saving for rural housing in severe cold regions. Archit. J. (S1), 218–220 (2015)Google Scholar
- 10.Wetter, M.: Design optimization with GenOpt. Build. Energy Simul. User News 21, 19–28 (2000)Google Scholar