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蓄冷空调系统经济分析与比较 总被引:10,自引:0,他引:10
建立了常规空调系统和蓄冷空调系统经济分析模型,关利用该模型分别对水蓄冷系统,冰蓄冷系统和共晶盐蓄冷系统的经济效益进行了计算分析与比较,其结果可供有关决策部门参考。 相似文献
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论蓄冷空调技术与节能 总被引:4,自引:0,他引:4
蓄冷空调是今后空调节能的方向,本文针对近年来建筑空调用电不断增加,论述了蓄冷空调对电力调峰、平衡电网及节能的意义,并介绍了冰蓄冷技术的广阔应用前景。 相似文献
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This article presents an experimental and numerical analysis of cooling buildings using night‐time cold accumulation in phase change material (PCM), otherwise known as the ‘free‐cooling principle’. Experimental and numerical studies of the ceiling and floor free‐cooling principle, as well as passive cooling, are presented. The free‐cooling principle is explained and some of the types of PCMs suitable for summer cooling are listed. An experiment was conducted using paraffin with a melting point of 22°C as the PCM to store cold during the night‐time and to cool hot air during the daytime in summer. Air temperatures and heat fluxes as a function of time and dimensionless cold discharging values are presented for different air velocities. Experimental analysis of one week of measuring under real conditions is presented in order to show how cold storage functions. Copyright © 2007 John Wiley & Sons, Ltd. 相似文献
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冰蓄冷中央空调是将实际用电从电网高峰向低谷时段转移,从而提高电网效率和节约能源的有效方法之一。文中主要介绍了冰蓄冷空调负荷计算要点、蓄冰系统的组成及蓄冰系统选择设计计算、冰蓄冷空调系统全年能耗及运行费用;以冰蓄冷空调工程应用实例分析评估了该系统的经济性。 相似文献
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分析了直接蓄冰系统的动态特性,建立了相应的物理模型,并利用该模型得出了蓄冰半径及蓄冷率随时间的变化规律,模型预测值与实测值吻合较好。该模型可为直接蓄冰系统的设计及优化提供理论依据。 相似文献
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The gas turbine power output and efficiency decrease with increasing ambient temperature. With compressor inlet air cooling, the air density and mass flow rate as well as the gas turbine net power output increase. The inlet cooling techniques include vapor or absorption refrigeration systems, evaporative cooling systems and thermal energy storage (TES) systems. In this paper the thermoeconomic analysis of ice (latent) thermal energy storage system for gas turbine inlet cooling application was performed. The optimum values of system design parameters were obtained using genetic algorithm optimization technique. The objective function included the capital and operational costs of the gas turbine, vapor compression refrigeration system, without (objective function I) and with (objective function II) corresponding cost due to the system exergy destruction. For gas turbines with net power output in the range of 25-100 MW, the inlet air cooling using a TES system increased the power output in the range of 3.9-25.7%, increased the efficiency in the range 2.1-5.2%, while increased the payback period from about 4 to 7.7 years. 相似文献
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以中原经济区职业教育培训学校水蓄冷空调系统为研究对象,针对实际工程案例,采用配合蓄冷空调动态负荷的跟踪监测系统,相比传统空调系统日平均节约电费为12 704.60$,可转移非低谷电量41.28%。通过对系统负荷进行动态跟踪监测,分析了空调输出负荷与实际所用负荷匹配技术的相关性,以期合理调控空调区域负荷需求、适时提供制冷量,旨在实现系统节能降耗和减少实际开机容量,为类似空调系统的工程设计、运行及空调动态负荷监测的研究提供参考和借鉴。 相似文献
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主要介绍了直接空冷系统的工作原理、特点,着重以漳山电厂600MW机组为例,分析了直接空冷系统的运行方式及冬季结冻对直接空冷机组安全、经济运行的负面影响,提出了应对措施,为直接空冷机组安全运行提供参考和借鉴。 相似文献
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提出在奶站采用热泵制冷供热的技术,利用牛奶降温时放出的热量加热水。该系统节约煤炭的消耗量,减少有害气体及烟尘排放。 相似文献
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