Research On Design Of Zero-energy Residential Building For Tianjin Area

With the increasingly prominent worldwide energy shortage, building energyefficiency has become a common concerned research topic. Today, Europe, USA,Japan and other developed countries take a leading position in building energy saving.They all make a great progress in low energy consumption building research such asstandard and code, technique strategy and policy support. On this basis, zero energybuilding has gradually become a main future trend. In recent years, China hasachieved great success in energy efficiency by3-step plan, but still in the initialstage in basic research of zero energy building. Especially, the research of zero energyresidential buildings in cold and severe cold region is almost in a blank state. Basedon the above reasons, from the perspective of Tianjin climate feature and renewableenergy potential use, the thesis made a depth analysis on the influence factors ofoperational energy consumption in Tianjin residential building and on the basis ofanalysis conclusion developed a design guide of Tianjin zero energy residentialbuilding. From the guide of low energy design, by the integration and optimization ofrenewable energy applicable technologies, the thesis performed a research andpractice of feasibility of Tianjin zero energy residential buildings.Firstly, from the point of providing comfortable and healthy indoor environmentfor occupier, the thesis made a division of energy consumption season and period ofTianjin residential building, and developed four energy consumption seasons andperiods of heating, cooling, ventilation and dehumidification in one year.Secondly, from the perspectives of analysis on the worldwide samples of zeroenergy residential buildings and energy balance, the thesis prescribed the types of zeroenergy residential buildings in Tianjin district, and developed basic model applicableto the design of zero energy residential building in Tianjin by integrating TianjinBuilding Efficiency Design Standard of Residential Building.Thirdly using the energy simulation software Design Builder, the thesis made asimulation of inner and outer factors which influence the operational energyconsumption of the basic model, and developed a series of guidelines such as the bestorientation, shell fabric forms and thermal performance parameters, suitablewindow-to-wall ratio, window sun-shading forms and etc.Fourthly, through the selection, integration and optimization of applicablerenewable energy technologies in Tianjin, the thesis developed multi-energy providing system of Tianjin zero energy residential building experiment platform, made ananalysis on the feasibility of Tianjin zero energy residential building, and made apreliminary evaluation.Finally, the thesis established an indoor environmental monitor system of zeroenergy laboratory. Through the indoor environmental parameters record in one year,the thesis made an analytical judgment on indoor comfortable degree of zero energylab without assistant cooling or heating sources and verified the reliability of lowenergy consumption design guide of zero energy residential buildings in Tianjindistrict.