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Effects of wall configuration on building energy performance subject to different climatic zones of China

机译：不同气候区域下墙体结构对建筑节能性能的影响

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摘要

Building energy plays a significant role in total energy consumption in China. It is widely recognized that the insulation performance of the external envelops is a critical factor for energy consumption of building air conditioning system. In this study, the effects of building external wall's insulation thickness and position on the heating and cooling loads of a commercial building studied for five cities from different climatic zones of China, namely, Harbin, Xi'an, Shanghai, Kunming and Guangzhou, are investigated numerically. The wall's optimum insulation thicknesses of the building simulated in these cities are determined by the life cycle cost analysis (LCCA) method. Meanwhile, the different positions of insulation layer embedded in the wall are investigated in terms of the time lag and decrement factor. The results show that the increase of insulation thickness has a significant effect on the building heating load, inversely it exhibits a relatively small effect on the building cooling load. The analysis indicates that building energy savings vary from different climatic zones. For a given wall insulation and the same building conditions, the largest building energy savings are achieved in Harbin, and energy savings of other cities follow the order of Xi'an, Shanghai, Kunming and Guangzhou. The variation of building energy savings in Guangzhou is insignificant along with the increase of the insulation thickness. Using expanded polysttyrene as insulation layer material, the optimum insulation layers of the building in Harbin, Xi'an, Shanghai, Kunming and Guangzhou are founded to be 80 mm, 60 mm, 40 mm, 40 mm, and 20 mm, respectively. (C) 2015 Elsevier Ltd. All rights reserved.
机译：建筑能耗在中国的总能耗中扮演着重要角色。众所周知，外部信封的隔热性能是建筑空调系统能耗的关键因素。在这项研究中，对哈尔滨，西安，上海，昆明和广州的五个城市进行了研究，建筑物外墙的隔热层厚度和位置对一栋商业建筑的供暖和制冷负荷的影响是进行了数值研究。在这些城市中模拟的建筑物墙体的最佳隔热厚度是通过生命周期成本分析（LCCA）方法确定的。同时，从时滞和递减因子的角度研究了嵌在墙体中的保温层的不同位置。结果表明，保温层厚度的增加对建筑物的热负荷有显着影响，反之，对建筑物的冷却负荷影响较小。分析表明，建筑物的节能量随气候区域的不同而不同。在给定的墙体保温和相同的建筑条件下，哈尔滨的建筑节能量最大，其他城市的节能量依次为西安，上海，昆明和广州。随着保温层厚度的增加，广州建筑节能的变化不明显。以发泡聚苯乙烯为保温层材料，哈尔滨，西安，上海，昆明和广州的建筑物最佳保温层分别为80毫米，60毫米，40毫米，40毫米和20毫米。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Applied Energy》 |2017年第2期|1565-1573|共9页
  • 作者

    Zhang L. Y.; Jin L. W.; Wang Z. N.; Zhang J. Y.; Liu X.; Zhang L. H.;

  • 作者单位

    Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China|Natl Educ Minist, Key Lab Renewable Energy Utilizat Technol Bldg, Jinan 250101, Shandong, Peoples R China;

    Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China;

    Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Shaanxi, Peoples R China;

    Natl Educ Minist, Key Lab Renewable Energy Utilizat Technol Bldg, Jinan 250101, Shandong, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    External wall; Insulation layer; Heating load; Cooling load; Life cycle cost analysis;

    机译：外墙;保温层;加热负荷;冷却负荷;生命周期成本分析;

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