| Promotion of the sustainable development of China’s economic and the improvement of people’s living level are significant strategic questions. Because of the terrain and the climate characteristic in severe cold areas, the building envelopes hav special requirements. Exterior window is one important component of the building envelopes, its related research attracts people’s attention. The main research content is under the premise of meeting the lightening and sunlight performance requirements, research on the physical properties and the LCA model of exterior window in severe cold areas. The scope of the study is the interactions and the influence of the optimizational model and the interior environment. The research validates and evaluates the model through the LCA of environmental impact assessment and proposes the adapted type of exterior window in severe cold areas.This paper introduces the climate characteristics in the severe cold areas, and analyzes exterior windows with related concepts. Then the theoretical LCA is introduced, and the influence factors of the severe cold areas are analyzed, together with the efficiency of these factors.This paper analyzes the existing impacts and effects of exterior window types to the indoor thermal environment. The heat insulation property is a key factor to the exterior windows design in the severe cold areas. Cold region is characterized by low temperature, if the heat insulation property is not that good leading to the high heat exchange rate, in that the interior temperature could not be guaranteed. After the analysis of the indoor thermal environment, the theoretical model is built, and the data of the heat convection and heat conduction are obtained, which can provide effective ensurance fo the optimization of the the exterior windows physical performance. At the same time, the problem of dew formation is studied, with the solutions of this problemsThe impacts and effects of severe cold areas exterior windows to the indoor wind environment in the heating period are studied. As the fast wind speed in winter, the continuing stress is added on the window; As the winter heating season, windows in the long-closed state, seriously affecting the indoor air quality, which will affect people’s physical and mental health. Through pressure value calculation, the pressure level in Harbin is obtained. Through finite element analysis the wind pressure on the existing performance of windows is studied, and the data of different materials, different forms of wind pressure outside the window is obtained. After the study of wind environment, the theoretical model is established, providing references to the later physical properties optimization.The impacts and effects of severe cold areas exterior windows to the indoor acoustic environment in the heating period are studied. Through statistical energy analysis of the impact sound insulation of windows related factors, the result is that the average response obtained glass part is faster than the average speed of other structural response, with the maximum radiated noise; The vibration of the glass surface part is the largest. On the basis of that, the solutions of improving the sound insulation properties are brought out, and the statistical energy analysis model is established.In addition, The window ventilator are researched and designed according to the need of severe cold area and the previous research. Window ventilation has obvious improvement effect on improving indoor air quality, ensuring natural ventilation, reducing the air convection, reducing noise and condensation.Finally, the aim and scope of the LCA model in the severe cold areas is studied. The impact factors of the LCA in the severe cold areas is researched, and the influence type of the LCA environment in the severe cold areas is dertermined: global warming, ozone depletion, environmental total emission, greenhouse effect, acidification and eutrophication effects. An inventory of existing exterior windows are analyzed to evaluate their potential impact on the environment, on this basis proposed based on the performance of windows optimized ventilation concept is based on the thermal performance of windows optimization ideas, through imitation indoor noise performance optimized Conception outside the window, based on full life cycle assessment of windows conception, through analysis of the data ultimately made based on full life cycle of windows physical performance optimization design ideas to build outside the window the whole life cycle of the physical properties of the model, and then conducting the model validation and evaluation. |
