气候变化下建筑冷负荷分区及应用研究  

Zoning and application of building cooling load under climate change

作　　者：李红莲[1] 寇雯 吕文 Li Honglian;Kou Wen;LüWen(Xi’an University of Architecture and Technology,Xi’an)

机构地区：[1]西安建筑科技大学,西安710055

出　　处：《暖通空调》2022年第12期59-65,共7页Heating Ventilating & Air Conditioning

基　　金：“十三五”国家重点研发计划项目“建筑节能设计基础参数研究”(编号:2018YFC0704500)。

摘　　要：在“双碳”目标和气候变暖的背景下,能源转型势在必行。建筑冷负荷分区能直观地反映建筑制冷能耗需求状况,揭示我国不同区域制冷需求的增长差异,为建筑结构能源转型提供导向。而分区的合理性主要取决于分区指标,因此提出了一种采用制冷度时数(CDH)指标的分区方法。首先,基于室外气象参数与室内热舒适温度生成我国历史Ⅰ阶段(1988—2017年)和气候变化情景Ⅱ阶段(2050—2080年)的CDH。其次,采用K-medoids算法在两阶段情景下分别将我国划分为5个建筑冷负荷区,反映地域制冷能耗需求差异。对比分析了两阶段建筑冷负荷分区的变化特征,发现气候变化下我国部分寒冷地区制冷能耗增长最为明显,对太阳能等可再生能源有很强的需求潜力。In the context of dual carbon goals and climate change,energy transition is imperative.Building cooling load zoning can intuitively show the building cooling energy demand,reveal the growth differences in cooling demand in different regions in China and provide guidance for building structural energy transformation.The rationality of zoning mainly depends on the zoning index,so a zoning method using the cooling degree hours(CDH)index is proposed.First,based on outdoor meteorological parameters and indoor thermal comfort temperature,the CDHs of China s historical stageⅠ(1988-2017)and climate change scenario stageⅡ(2050-2080)are generated.Then,the K-medoids algorithm is used to divide China into five building cooling load zones under the two-stage scenario,reflecting the regional differences in cooling energy demand.The variation characteristics of the two-stage building cooling load zoning are compared and analysed.It is found that the cooling energy consumption in some cold regions of China increases most obviously under climate change,and the future transformation of building energy structure has a strong demand potential for renewable energy such as solar energy.

关 键 词：气候变化 冷负荷 分区指标 K-medoids算法 制冷度时数(CDH) 

分 类 号：TU831.2[建筑科学—供热、供燃气、通风及空调工程]