严寒地区办公建筑外墙保温系统优化及碳减排分析
Optimization and Carbon Emission Reduction Analysis of External Wall Insulation System of Office Buildings in Cold Areas
骆艳杰 1赵薇 1王月 1王熙瑞1
作者信息
- 1. 辽宁工业大学 土木建筑工程学院,辽宁 锦州 121001
- 折叠
摘要
合理选择保温材料及厚度是实现低碳建筑的重要途径.以典型办公建筑为对象,选取严寒地区3 个不同城市(漠河、哈尔滨、沈阳),模拟4 种保温材料对建筑能耗的影响,结合生命周期评价与生命周期成本分析构建生态效率模型,核算建筑外保温系统的全生命周期碳排放及经济成本,并识别出具有最优生态效率的建筑外保温系统.结果表明,严寒地区采用建筑外保温系统能够带来良好的建筑节能及碳减排效果,但生命周期碳排放与经济成本结果具有明显差异,城市地理位置和保温材料类型影响其厚度优化.从地理位置角度,低纬度城市沈阳的建筑外墙保温系统具有最低的碳排放和经济成本,高纬度城市反之;从碳排放和成本效果来看,聚氨酯板＞挤塑聚苯板＞岩棉板＞模塑聚苯板;3 个城市采用聚氨酯板,从生态效率来看65 mm＞60 mm＞50 mm,其生命周期碳排放为 101.95～184 kgCO2eq/(m2∙a),经济成本为8.24～15.17 元/(m2∙a).
Abstract
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).
关键词
建筑外保温/生命周期评价/碳排放/生态效率Key words
external wall insulation of the buildings/life cycle assessment/carbon emission/ecological efficiency引用本文复制引用
基金项目
国家自然科学基金(52070091)
辽宁"百千万人才工程"培养经费资助()
出版年
2024
NETL
NSTL
维普
万方数据