共查询到17条相似文献,搜索用时 140 毫秒
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在定性分析天然采光对建筑能耗影响的基础上,以一天窗建筑为研究对象,利用eQUEST能耗模拟软件为工具,分析了结合照明控制的天窗采光对夏季供冷峰值负荷及建筑各用能项如照明、供冷、供热的能耗影响,探讨了天窗透光率、照明密度、照明控制方式对建筑能耗的影响,并针对不同气候地区的典型城市探讨了昼光照明的气候差异性。 相似文献
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商场照明节能潜力及其对空调能耗的影响 总被引:2,自引:0,他引:2
分析了商场照明现状及其节能潜力,深入探讨了商场中央空调动态冷负荷的特征并指出照明对于空调冷源全年能耗的影响可达4 0 % ,说明高效照明措施对于照明节能和空调节能均具有重要意义。 相似文献
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地铁能源管理系统可以提高地铁运营能源管理工作水平,而地铁能耗数据模型是地铁能源管理系统软件设计的基础,只有采用统一的能耗数据模型,才能在能耗分项与分项之间、车站之间、线路之间进行能耗数据的统计和分析。南京地铁根据自身能耗特点制定了地铁能耗数据模式,提出了能耗数据分类分项模型和分户模型,并对分项模型进行了细化分析,把线路总用电分为牵引和动力照明用电,动力照明用电再细分为五个分项,并对每个分项用电进行了分解,同时还提出了回路设计、表计配置和能耗数据处理等方面的建议。 相似文献
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在商业建筑中 ,照明能耗约占到建筑总能耗的 1/3,照明节能是商业建筑节能的重要环节。本文分析了商业照明环境与消费行为的关系 ,指出营造一个良好的照明环境能促使消费行为的完成 ,但同时还应该重视照明系统的节能功能 ;分析了照明节能的四个途径 :光源的合理选择、自然光的合理利用、空间照度的合理设计和照明系统的合理控制与管理 相似文献
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The building energy performance improvement of large-scale public buildings is very important to release China’s energy shortage pressure. The aim of the study is to find out the building energy saving potentials of large-scale public and commercial buildings by energy audit. In this paper, the energy consumption, energy performance, and audit were carried out for a typical commercial mall, the so-called largest mall in Asia, located in a hot-summer and warm-winter climate zone. The total annual energy consumption reaches 210.01 kWh/m2, of which lighting energy consumption accounts for 30.03 kWh/m2 and the lift and elevator energy consumption accounts for 40.46 kWh/m2. It is by far higher than that of the average building energy consumption in the same category. However, the annual heating, ventilation, and air-conditioning (HVAC) energy consumption is only 87.19 kWh/m2 even though they run 24/7. It proves that the energy performance of the HVAC system is good. Therefore, the building energy savings potential mainly relies on reducing the excessive usage of lighting, lifts, and elevators. 相似文献
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夏热冬暖地区办公建筑能耗模拟与分析 总被引:2,自引:2,他引:0
夏热冬暖地区是我国经济和建筑产业最发达的地区之一,也是建筑能耗最多的地区之一。分析和研究夏热冬暖地区建筑能耗的特点对建筑节能有重要的意义。本文用eQUEST建筑能耗模拟软件模拟了夏热冬暖气候下不同的建筑围护结构的能耗性能,并与实际调查结果进行了比较。结论表明:办公类建筑中的空调是最大的能耗终端,全年的能耗以办公设备和照明的能耗最稳定。有外保温措施和同时具有内、外保温措施最大区别在于节省空调电力消耗31.3%和39.1%。说明建筑外墙保温系统是建筑节能的重要手段。 相似文献
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Assessment of climate change impact on building energy use and mitigation measures in subtropical climates 总被引:1,自引:0,他引:1
Likely increase in energy use in air-conditioned office buildings due to climate change in subtropical Hong Kong was estimated for two emissions scenarios. Towards the end of the 21st century (i.e. 2091-2100), the average annual building energy use would be 6.6% and 8.1% more than that in 1979-2008 for low and medium forcing, respectively. Potential mitigation measures concerning the building envelope, internal condition, lighting load density (LLD) and chiller plant were considered. Thermal insulation to the external wall would not be effective to mitigate the expected increase in building energy use due to climate change. Controlling the amount of solar heat gain through the window would be a better option. Lowering the current LLD of 15 W/m2 to about 13 W/m2 would result in substantial energy savings because of the reduction in electricity consumption for both electric lighting and air-conditioning. As for the chiller plant, the coefficient of performance (COP) should be improved from the current minimum requirement of 4.7 to at least 5.5 to alleviate the impact of climate change. Raising the summer set point temperature (SST) to 25.5 °C or higher would have high energy saving and hence mitigation potential, which could be readily applied to both new and existing buildings. 相似文献
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The characteristics of the building's energy consumption in Southern Europe are analysed. The energy potential of solar energy for heating and lighting purposes as well as the potential of passive cooling techniques are investigated. The ecological impact of the energy saving technologies as well as the market opportunities of the alternative technologies are discussed. 相似文献
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