严寒地区变电站建筑围护结构传热系数限值研究  

Research on Limit Value of Heat Transfer Coefficient for Building Envelope of Substation in Severe Cold Region

作　　者：牟文博 王昭俊[1,2] 张圣金 刘畅 杨宇鑫[1,2] MU Wenbo;WANG Zhaojun;ZHANG Shengjin;LIU Chang;YANG Yuxin

机构地区：[1]哈尔滨工业大学建筑与设计学院,黑龙江哈尔滨150006 [2]寒地城乡人居环境科学与技术工业和信息化部重点实验室,黑龙江哈尔滨150090 [3]中国能源建设集团黑龙江省电力设计院有限公司,黑龙江哈尔滨150078

出　　处：《煤气与热力》2025年第3期18-23,42,共7页Gas & Heat

摘　　要：为了降低严寒地区变电站建筑的供暖能耗,对严寒地区某半户内变电站建筑围护结构传热系数限值进行研究。采用能耗模拟方法,利用SketchUp软件建立建筑模型,并用EnergyPlus软件对建筑能耗进行模拟计算,分析了屋面、外墙、外窗不同传热系数对建筑节能率的影响。通过正交试验法,综合考虑屋面、外墙、外窗传热系数,计算16种方案的建筑节能率。经研究得出:减小围护结构传热系数,建筑全年累计耗电量降低,提高建筑节能率。外墙传热系数对建筑节能率的影响较为明显,屋面传热系数对建筑节能率的影响较小,受较小窗墙比的限制,外窗的传热系数对建筑节能率影响较小。对比不同节能方案,方案3的传热系数接近公共建筑节能标准限值,建筑节能率为8.9%。方案2节能效果较好,传热系数设置较为合理,建筑节能率为14.5%。方案1的传热系数为居住建筑节能标准的限值,建筑节能率最大,为18.9%。建议严寒B区半户内变电站建筑(窗墙比≤30%)屋面、外墙、外窗传热系数限值分别取0.20、0.30、2.0 W/(m^(2)·K),此时建筑节能率为12.9%,符合目前我国的节能水平。In order to reduce the heating energy con-sumption of substation buildings in a severe cold region,the heat transfer coefficient limit value of the building envelope of a semi-indoor substation in the severe cold region was studied.Using energy consumption simulation method,two building models were established by SketchUp software,and the building energy consumption was simulated and calculated by EnergyPlus software.The influence of different heat transfer coefficients of roof,exterior wall and exterior window on building energy-saving rate was analyzed.By using the orthogonal experimental method and consid-ering the heat transfer coefficients of the roof,exterior walls,and windows comprehensively,the building energy-saving rates of 16 schemes were calculated.Through research,it is found that reducing the heat transfer coefficient of the envelope can lower the cumulative annual power consumption of the building and improve its energy-saving rate.The influence of exterior wall heat transfer coefficient on building energy-saving rate is more significant,while the influence of roof heat transfer coefficient on building energy-saving rate is relatively small.Limited by smaller window-to-wall ratio,the heat transfer coeffi-cient of external window has little influence on building energy-saving rate.Compared with different energy-saving schemes,the heat transfer coefficient of scheme 3 is close to the energy-saving standard limit value of public buildings,with a building energy-saving rate of 8.9%.Scheme 2 has better energy-saving effect,the heat transfer coefficient setting is reasonable,and the building energy-saving rate is14.5%.The heat transfer coefficient of scheme 1 is the limit value of the energy-saving standard of residential buildings,and the building energy-saving rate is the largest,which is 18.9%.It is recommended that the heat transfer coefficient limits for the roof,exterior wall,and exterior window of semi-indoor substation buildings in severe cold region B(window-to-wall ratio≤30%)should be set at

关 键 词：变电站建筑 围护结构 传热系数 建筑节能率 严寒地区 

分 类 号：TU832.02[建筑科学—供热、供燃气、通风及空调工程]