Optimization and Carbon Emission Reduction Analysis of External Wall Insulation System of Office Buildings in Cold Areas
Reasonable selection of insulation materials and thickness is an important way to achieve low-carbon buildings.This article takes typical office buildings as the object,selects three different cities in severe cold areas(Mohe,Harbin,Shenyang),simulates the impact of four insulation materials on building energy consumption,combines life cycle assessment and life cycle cost analysis to construct an ecological efficiency model,calculates the full life cycle carbon emissions and economic costs of the building's external insulation system,and identifies the building's external insulation system with the best ecological efficiency.The results show that using building external insulation systems in severely cold areas can bring good building energy conservation and carbon reduction effects,but there is a significant difference between life cycle carbon emissions and economic cost results.The geographical location of cities and the type of insulation materials affect their thickness optimization.From a geographical perspective,the exterior wall insulation system of buildings in the low latitude city of Shenyang has the lowest carbon emissions and economic costs,while in the high latitude city,the opposite is true;From the perspective of carbon emissions and cost-effectiveness,polyurethane board>extruded polystyrene board>rock wool board>molded polystyrene board;Three cities use polyurethane boards,with an ecological efficiency of 65mm>60mm>50mm.Their life cycle carbon emissions are 101.95～184 kgCO2eq/(m2∙a),and the economic cost is 8.24～15.17 yuan/(m2∙a).
external wall insulation of the buildingslife cycle assessmentcarbon emissionecological efficiency
NETL
NSTL
万方数据
维普
