| The renovation of existing residential windows in Xiangtan City can improve the indoor thermal comfort of residents and reduce air conditioning energy consumption,which is conducive to the harmonious development of housing and nature,and keeps people closer to the goal of a better life.It is convenient for the promotion of renovation,so the economical research on the renovation of existing residential windows has research significance.This article takes the existing residential windows in Xiangtan City as the research object,specifically to select the most economical window type for the renovation of existing residential windows,through literature information query and induction,field investigation and theoretical research,and systematic analysis methods.At the method level,the economic analysis method of window renovation is summarized.The economic analysis of the window renovation economic theory and the current status,comprehensive benefits,and renovation funds of existing residential windows in Xiangtan City are carried out.The economic evaluation of the entire life cycle and construction projects From the perspective of selecting the most economical window type,it provides a reference for the method of fund raising in the optimal renovation plan.Research indicates:(1)The questionnaire survey analysis shows that the existing houses in Xiangtan City have low quality and poor thermal comfort.Most windows only meet the basic ventilation and lighting requirements,and the thermal insulation and thermal insulation effects are poor,especially in winter and summer.In the extreme climate environment of the two seasons,the problem of poor thermal comfort is particularly prominent.(2)Calculated by energy saving and static investment payback period: The renovation of existing residential windows in Xiangtan City,the economic problems are very prominent,it is necessary to analyze the comprehensive benefits and early investment costs.In view of energy saving effect,insulating glass is better than single-layer glass;but from the aspect of price,insulating glass is higher than single-layer glass.Based on the common aluminum alloy single-layer glass,the data on the cost increase rate and annual energy saving rate of different types of windowsare compared,and the conclusion that the plastic steel ordinary hollow glass window has the highest cost performance is obtained,which is suitable for the existing residential windows in Xiangtan City upgrade.(3)In the renovation of existing windows in Xiangtan City,a reference method was proposed for the method of raising funds in the optimal renovation plan for windows.Funds can be raised through the use of public housing maintenance funds,the establishment of special windows funds,the use of community resources,the allocation of owners,and government subsidies.This method can provide a reference for the renovation of windows in existing houses in Xiangtan in the future.The article comprehensively considers the energy-saving effect and the reconstruction cost.The renovation of the existing house windows in Xiangtan City is suitable for the selection of plastic steel ordinary hollow glass windows.Not only can save energy,but also maximize the economic efficiency of the transformation.To broaden the channels for raising funds for reconstruction,the owners and the government can jointly fund the reconstruction and establish special funds.The renovation of existing residential windows is very necessary to promote the improvement of the living quality of the citizens of Xiangtan City. |