Dalian Existing High-rise Residential Building Energy Saving Technology Research

Present situation of existing buildings:Energy-efficient buildings built area is only 4.08 billion m2, Accounting for 10% of the total building area, The rest are high energy consumption of buildings. For carrying out the energy conservation law of the People's Republic of China, Country's energy conservation standards, rules and regulations And the technical specification for energy-saving reform of existing residential building, Greatly improve the current situation of residential building energy consumption, poor thermal environment, Take effective measures, the energy saving technology of policy, in order to achieve the purpose of saving energy, improving residential thermal environment.The paper on the basis of the analysis of both the present situation of high-rise residential buildings, to find problem in cold areas existing residential building energy efficiency, put forward the necessity of the existing residential buildings and urgency.Papers on both the high-rise residential building energy-saving renovation in dalian, the thorough investigation, local materials, methods of data collection, inductive analysis, for both high-rise residential building exterior wall, roof, doors and Windows, overhead floor heat preservation and heat insulation materials in areas such as the material, the combustion performance, process characteristics, analyzes and compares the market price, Find dalian combines high-rise residential building palisade structure thermal performance parameters of the thickness of palisade structure parts of the upper limit value of thermal insulation material.In a typical high-rise residential buildings in dalian, for example, with energy saving 65% as standard, external wall, roof, doors and Windows, overhead floor with the enclosure structure energy saving scheme for energy saving transformation, through the calculation of energy saving, ensure the palisade structure parts respectively achieve thermal performance parameters of the limit, the building material consumptions heat index qH value still has not reached the requirements of energy saving of 65%, by regulating calculation, modified locally the thickness of palisade structure parts, finally reached the requirements of energy saving of 65%.Conclusion:with this kind of external thermal insulation system of dalian city has both economic rationality of high-rise residential building energy-saving renovation.