Test Research On Thermal Performance Of Energy-saving Building Envelope In Severe Cold Region

With the acceleration of urbanization comprehensively promote the country aswell as building energy efficiency, which greatly promoted the development ofthe wall structure and diversity of wall materials, various insulation wallstructural system came into being. At present, the rapid rise of cold regions ashautoclaved aerated concrete structure from thermal insulation system, which iscomposed of fly ash autoclaved aerated concrete block with high strength andhigh resistance to freeze-thaw capabilities and special supporting masonrymortar, plaster a new self-insulation wall insulation mortar formation. It usescold winter heating fossil fuel waste fly ash as the main raw material, withexcellent physical and mechanical properties, high thermal insulation, energy-saving and environmental protection, with buildings with life and otherprominent features, is currently China’s performance in cold regions one wall ofthe superior material.Firstly, this article set fly ash autoclaved aerated concrete block and masonryfor supporting mortar, plaster wall structure from thermal insulation mortarsystem formed as the main object of study, winter and summer, respectively,using heat flow meter method and auxiliary hot box-field measured heat flowmeter method of fly ash autoclaved aerated concrete wall insulation from the heattransfer coefficient. Two different test methods measured ash autoclaved aeratedconcrete wall insulation from the heat transfer coefficient can meet energyefficiency standards in Jilin Province " public building energy efficiency designstandards "(DB22/436-2007). This article contrasted fly ash autoclaved aeratedconcrete measured values from the field and50%energy saving insulation wallheat transfer coefficient of the standard requirements of the upper limit of theheat transfer coefficients, analyzed the fly ash autoclaved aerated concrete fromheat retaining structure and its applicability in cold regions energy efficiency.Secondly, winter heat flow meter method is adopted in this paper the field test2external thermal insulation building (coal gangue hollow block stick eps boardexterior wall, clay tile stick eps board exterior wall) of the outer wall heattransfer coefficient, autoclaved aerated concrete with fly ash from thermal insulation wall heat transfer coefficient of measured values compared with theheat transfer coefficient of external thermal insulation wall measured values. Flyash autoclaved aerated concrete is analyzed from insulation enclosure structuresystem than the external thermal insulation enclosure structure system not onlyenergy-saving, but also in terms of design and construction fire safety has moresignificant advantages.Finally, in this paper, fly ash autoclaved aerated concrete paste polystyreneboard exterior wall heat transfer coefficients measured value insulation wall heattransfer coefficient from the measured values of the site, hollow clay bricks, the50%energy saving standards for facades pass the upper limit is building facadesheat transfer coefficient of heat transfer coefficient, using DeST-c softwaresimulation of the three kinds of building envelope energy consumption ofdifferent heat transfer coefficient, by comparing the energy efficiency, emissionsand economy in three areas, Fly from autoclaved aerated concrete buildingenvelope insulation system than clay hollow bricks externally bondedpolystyrene board insulation system, saving50%more energy efficient standards,environmental protection and the economy.In summary, the fly ash from autoclaved aerated concrete wall insulation setenergy saving, economic and social benefits as a whole, is a new energy-savingbuilding materials has broad application prospects. At the same time, the studyprovided a reference for research methods used in this paper for energy-savingbuilding materials related fields, to guide the construction of consumer anddeveloper’s investment decision, and the promotion of technical and economicevaluation of building energy-saving work of great significance.