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冷水机组节能运行模式的模拟分析研究
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作者 施灵 马益民 《电力需求侧管理》 北大核心 2008年第4期35-36,共2页
空调系统中的冷水机组大部分时间处于部分负荷运行状态,其性能系数COP随负荷百分比变化。分析冷水机组部分负荷性能,研究了不同机型、不同配置模式和不同运行模式下,用不同机组的逐台启动法和平均负载率法对负荷进行分摊,并对多台冷水... 空调系统中的冷水机组大部分时间处于部分负荷运行状态,其性能系数COP随负荷百分比变化。分析冷水机组部分负荷性能,研究了不同机型、不同配置模式和不同运行模式下,用不同机组的逐台启动法和平均负载率法对负荷进行分摊,并对多台冷水机组的运行能耗进行分析,从设计选型和运行2个方面提出了冷水机组的节能途径。 展开更多
关键词 冷水机组 配置模式 节能运行模式 冷源能耗
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Passive Cooling Strategies in Greening Existing Residential Building in Hot Dry Climate: Case Study in Bahrain
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作者 May Al-Saffar 《Journal of Environmental Science and Engineering(A)》 2015年第5期233-240,共8页
This paper will present several passive-cooling technologies and design features that can be adopted to reduce building heat gain without the need of excess energy consumption. A typical residential unit will be selec... This paper will present several passive-cooling technologies and design features that can be adopted to reduce building heat gain without the need of excess energy consumption. A typical residential unit will be selected as case study and a three basic passive cooling strategies were selected to enhance the building envelop, as well as using appropriate shading devices and green roofing system that prove to be a good environment quality improver. IES energy simulation software will be used to evaluate the performance of the building. The study revealed a number of significant findings in reducing the energy consumption and enhancing the tenants' thermal comfort. American Society of Heating Refrigerating and Airconditioning Engineer (ASHRAE) standards specially via improving the performance of building envelop because it is the interface between internal and external environment. Moreover, improving the building envelope has recorded that overall energy and chiller energy consumption can be reduced up to 10.8% and 21.6% respectively, Therefore, it is anticipated that further reductions can be achieved via applying more passive cooling strategies. Finally, it could argue that the results of this paper will not only be applicable to Bahrain but also many countries that have similar climatic and environmental context. 展开更多
关键词 Passive cooling thermal comfort energy efficiency IES software Bahrain residential building hot dry climate.
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A Study on the Evaluation of Heating and Cooling Energy Efficiency in Residential Buildings for Climatic Zones of Turkey
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作者 Suzi Dilara Mangan Gul Koclar Oral 《Journal of Energy and Power Engineering》 2014年第12期2045-2052,共8页
In Turkey, most of the common type projects of mass production residential buildings are being developed and constructed by TOK1 (Housing Development Administration of Turkey). These buildings, in which energy effic... In Turkey, most of the common type projects of mass production residential buildings are being developed and constructed by TOK1 (Housing Development Administration of Turkey). These buildings, in which energy efficient approach has been disregarded for years, cause to gradually increase on heating and cooling energy consumptions. In regards to national economics, it is essential to evaluate energy efficiency and to develop suggestions to decrease energy consumptions in residential buildings. To achieve appropriate solutions, cost evaluation also becomes necessary. Therefore, this paper aims to introduce a study which serves the purpose of producing a choice of energy efficient solutions in order to reduce energy consumptions and energy cost. In this study, different heating and cooling energy efficient scenarios have been developed for a selected residential building, constructed by TOKI, for climatic zones of Turkey. For each scenario, energy simulations have been executed by means of the simulation program--DesignBuilder, the user-friendly visual interface of EnergyPlus, and cost analysis has been carried out by using the net present value and discounted payback period method. As a result, energy and cost effective solutions have been presented and discussed for different climatic zones. 展开更多
关键词 Building energy performance residential buildings energy efficient retrofitting energy cost.
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温度传感器偏差故障对冷源系统的影响分析
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作者 周璇 闫学成 +1 位作者 闫军威 梁列全 《低温与超导》 CAS 北大核心 2022年第11期55-61,共7页
偏差故障是冷源系统温度传感器最常见的故障之一,影响中央空调冷源系统的节能可靠运行。以夏热冬暖地区某建筑中央空调冷源系统,搭建Trnsys仿真模型,以室外干球温度传感器、冷冻供水温度传感器、冷却进水温度传感器为研究对象,探讨三种... 偏差故障是冷源系统温度传感器最常见的故障之一,影响中央空调冷源系统的节能可靠运行。以夏热冬暖地区某建筑中央空调冷源系统,搭建Trnsys仿真模型,以室外干球温度传感器、冷冻供水温度传感器、冷却进水温度传感器为研究对象,探讨三种温度传感器发生不同程度偏差故障时,与冷源系统其他运行参数的耦合作用,及其对冷水机组工作性能和系统能耗的影响。结果表明:不同温度传感器偏差故障对系统其他运行参数、冷水机组工作性能及系统能耗影响规律不同。与其余两种温度传感器相比,室外干球温度传感器偏差故障对系统影响相对更大。 展开更多
关键词 温度传感器 偏差故障 Trnsys仿真模型 运行参数 冷源能耗
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