Study On Passive Heating Technology Of Ecological Building In The Western Sichuan Plateau

In today's world, increasing shortage of energy, sustainable development has become a major architectural design concept. The new solar building, which solar energy technology should be integrated into construction, will play an important role in the process of energy, environment and economic sustainable development. The main use of solar energy to develop green environmentally friendly buildings will become the future trend in the construction industry.The important significance of using passive solar heating building in Western Sichuan Plateau is introduced by analyzing the available fossil energy, the character of climate, the thermal insulation of existing building and the status of solar energy utilization. On the basis of theoretically analyzing the influencing factors of solar building dynamical thermal process, we establish the mathematical-physical model of solar building. In order to select a suitable studied tool, the characteristic and application scope of different building energy analysis programs are compared, the result show that EnergyPlus is suitable to be used to study passive solar building and the comparative testing method is used to verify the reliability of this program.After an overview and analysis of domestic and aboard indoor thermal comfort indices in the published literature is conducted, the indoor thermal comfort criterion on passive solar house in the western Sichuan Plateau is determined as a result. Considering the demand of designing solar heating system for herdsmen settlement building projects in Kangding County, Sichuan Province, the ecological building calculation model is established. Based on the application of energy-saving windows, key thermal parameters of passive solar building are dynamically analyzed ,which are window-wall ratio, external window type, external heat transfer coefficient, different sequence of external wall materials and skylight insulation thickness. On the basis of dynamic simulation analysis for the average indoor temperature and indoor temperature fluctuations, an optimum passive solar heating technology is applied for this project.Finally, according to the analysis of design meteorological parameters for passive solar houses, on the basis of comprehensive analysis principle and using china building thermal environment analysis meteorological dataset, this paper bring forward the idea that comprehensive meteorological factors SDM and SMM are taken as the index of distributing regions division of solar energy resources in Western Sichuan Plateau, which can provide reference and suggestion for the correct decision of architectural design scheme.