Font Size: a A A

Research On Green Building Energy Consumption And Environmental Impact Assessment Based On BIM And LCA

Posted on:2022-11-24Degree:MasterType:Thesis
Country:ChinaCandidate:X CuiFull Text:PDF
GTID:2531307109469664Subject:Industrial engineering
Abstract/Summary:PDF Full Text Request
Energy crisis and environmental protection are the focus of worldwide concern.As one of the three high-energy-consuming industries,the construction industry has been expanding in recent years and the energy consumption of buildings has continued to increase,which has led to more and more serious environmental pollution problems.Green building is an emerging development field of energy saving and emission reduction in the construction industry.The study of energy consumption and environmental assessment methods for the whole life cycle of green buildings is of great significance to reducing the problems of high energy consumption and environmental pollution in buildings.At each stage of the building life cycle,from the production,transportation,construction,operation and disposal of raw materials,the resource and energy consumption during the period are closely related to the environmental impact,and the research at each stage is relatively independent.In addition,the traditional green building energy consumption simulation has many problems such as poor accuracy,long time-consuming,and cumbersome work.In order to solve the above shortcomings,based on the characteristics of BIM platform visualization,parameterization and model continuity,this paper proposes a "BIM-LCA" combination of green building energy consumption and environmental impact assessment model.Based on the life cycle assessment framework,this research divides the research scope into the raw material acquisition phase,construction phase,operation phase,abandonment and recycling phase,and incorporates the recycling and reuse phase that is rarely studied and easily overlooked into the research scope.In the early design stage of the green building,the environmental impact assessment of the whole life cycle is carried out,the BIM physical model is used to generate the engineering quantity list of the life cycle assessment and the impact assessment,and the BIM energy consumption model is established for the operation stage with the longest time cycle.In addition,the thermal parameters of the protective structure,the performance parameters of cooling and heating,the illuminance value of the lighting equipment and other parameters are simulated to improve the calculation accuracy of the building energy consumption during the operation phase.This paper takes a 7-story green building in Qingdao,Shandong Province as the research object to carry out a case study,uses the above methods to establish a full life cycle model for environmental impact assessment,Apart from this,the author conducts completeness inspection and contribution analysis of the evaluation results,and three different scenarios of models Conduct a sensitivity analysis.The results show that marine water eco-toxicity is the most affected environment type in the whole life cycle,and the least is ozone layer depletion.In addition to this,the extended service life in the operation phase can offset the environmental impact caused by the previous resource input,and it is determined that the environment will be affected.The reasonable service life with the lowest impact is 55 years.Secondly,the parameters of heating,cooling and lighting equipment in the operation stage play an important role in energy reduction and consumption reduction.Finally,the waste and recycling stages produce favorable environmental benefits for the input of upstream resources,and the use of green building materials is not only will reduce the environmental impact,but also reduce the waste of resources.This research shows that based on the “BIM-LCA” green building energy consumption and environmental impact assessment model,the key impact types,impact stages,and impact factors of the entire life cycle are identified and determined,providing feasible suggestions for reducing environmental pollution,and improving the environmental benefits of the entire life cycle reduce the environmental impact of the green building.
Keywords/Search Tags:BIM, LCA, Green buildings, Building energy consumption, Environmental impact assessment
PDF Full Text Request
Related items