相变墙体应用于办公建筑的多目标优化设计
MUIti-objective optimization design ofphase change waIIs in office bUiIdings
摘要：
以寒冷地区某办公建筑为例，基于TRNSYS建立了相变材料应用于建筑南外墙内侧的仿真模型，利用jEPlus+EA平台的 NSGAⅡ算法对建筑冷、热负荷进行了多目标优化设计，应用乌托邦点法对帕累托前沿解集进行了均衡决策，并对优化方案的相变时间和节能率进行了分析。结果表明：寒冷地区典型办公建筑合理的相变温度范围为17～25℃;以南外墙内侧采用相变材料的房间为计算基准的年均节能率可达7.2%，建筑冷、热负荷可分别减小7.78%、6.04%;最优解方案对于建筑热负荷的增益更高。
Abstract：
Taking an office building in the cold zone as an example,a simulation model of the phase change materials applied to the inside of the south exterior wall of the building is established based on TRNSYS,theNSGA-Ⅱ algorithm ofjEplus+EA platform isutilizedtoconductamulti-objectiveoptimization design ofthe building cooling and heating loads,the utopian point method is applied to make equilibrium decisionson thesetofpareto front,andthephasechange duration andenergysaving rateoftheoptimization solution areanalysed.The resultsshow thatthe reasonable phase change temperature range oftypicaloffice buildingsin thecold zoneisfrom 17 to25 ℃ , the average annualenergy saving rate ofthe room with phase change materialon the inside ofthe south exterior wallas the calculation benchmark can reach 7 . 2% , the buildingcooling andheating loadscan be reduced by7 . 78% and6 . 04% , respectively,and the optimization solution hasa highergain forthebuildingheating load.
Keywords:phase change wall；office building；building load；multi-objective optimization；sensitivity analysis