Energy Saving Retrofitting of Office Buildings in Cold Regions under the"Energy Saving"and"Economy"Target:Taking a Headquarters Building of Green Development as an Example
In 2021,the Ministry of Housing and Urban Rural Development issued the full-text mandatory standard-General Code for Building Energy Efficiency and Renewable Energy Utilization(GB55015-2021),which requires that the average design energy consumption level of public buildings should be further reduced by 20％on the basis of Design Standard for Energy Efficiency of Public Buildings(GB50189-2015).Facing the new energy conservation requirements,the balance between energy conservation and economy of building reconstruction has become a key concem.This paper lists a variety of energy saving technology paths for office buildings in cold regions,and takes a typical office building as an example to combine different transformation paths into ten energy saving transformation schemes,and compares and analyzes the energy saving rate and transformation cost of each scheme.A calculation and evaluation model of energy saving economy coupling is proposed to evaluate and select various energy-saving transformation schemes,and finally determine the optimal energy-saving transformation path of office buildings in cold areas under the requirements of the new standard.Some suggestions are proposed to guide designers to select and evaluate energy-saving transformation schemes and obtain optimal benefits.
building energy conservationeconomic analysisoffice buildingenergy saving transformationcase study
万方数据
