Research Of Building Life Cycle Energy Consumption Calculation Based On BIM

Construction industry is one of the main energy consumption industries in the world.Study of building energy saving has important significance to environmental protection of worldwide.Building energy consumption calculation and analysis is the foundation for building energy saving.In the past, the study on building energy consumption mostly attention the operational phase, witch rarely involved energy buildings other stages of the life cycle.As a complete life form, the stages of building life cycle are interrelated and influence each other.If just considering energy buildings alone can not make a stage of the life cycle of the building to achieve energy-saving purposes.The calculation of building life cycle energy consumption Based on BIM were studied for the energy conservation of building life cycle provides a theoretical basis.In this paper, the way of building life cycle energy consumption is different.Building life cycle energy be divided into four parts and the building energy consumption calculation model of each part is established.This four parts are:the Energy consumption of building information;building embodied energy;building operational energy and construction materials recycling energy.Among them, the first three energy are building energy consume energy, and the finally is building energy output.Reference to modeling process of REVIT that is BIM modeling software, set up the calculation model corresponding virtual model. he embody energy of building can be calculated based on calculate Model and the building model which REVIT software build on the examples of the building. Obtain building doors’, windows,’walls’, floors’ embody energy at each stage and embody energy of building components.Calculate the embody energy of various stages in proportion of all total embodied energy distribution the embodied energy of each stage. found the door accounted for 44.9% during the construction phase, accounting for 45.2% of operational maintenance phase, accounted for 10.1% dismantling and waste processing stage; the windows accounted for 44.9% during the construction phase,accounting for 45.2% of operational maintenance phase, accounted for 10.1%dismantling and waste processing stage,the same energy distribution with doors;the accounted for 44.9% during the construction phase, accounting for 45.2% of operational maintenance phase, accounted for 10.1% dismantling and wasteprocessing stage.Wall embodied energy followed by accounted for 56%, 28%, 16% in construction stage, building demolition and construction waste processing stage accounted for running maintenance phase.Floor only during the construction phase and demolition and waste disposal can be accounted for was 84%, 16%.Horizontal contrast building doors, windows, floors, walls in the building of four kinds of components can be in the proportion found them to gradually increase the proportion.Longitudinal comparison construction, operation, maintenance, removal and disposal materialized in various stages of construction of the whole building life cycle can always embodied energy in proportion, we found that they accounted for successively reduced and the proportion of the construction phase of up to 65%.In this article, BIM technology is applied to studied the calculation of building life cycle energy consumption,which enriched the calculation method of building energy consumption and provided a theoretical basis for the informatization of energy consumption calculation of building.Embody energy of the building be calculated to provide some reference data that establish the database of building Energy Consumption.