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本文分析了几种除湿制冷空调系统工作原理,提出了除湿制冷空调系统的性能计算公式。通过计算,分析了多种工况对系统性能的影响,得出除湿制冷空调系统的COP可达4左右。相对于常规制冷空调系统而言,除湿制冷空调系统不仅低噪音,同时亦是一种节能型空调系统。 相似文献
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研究了一种太阳能喷射/压缩复合制冷循环,由太阳能集热子系统、喷射制冷子系统及压缩制冷子系统组成,系统充分利用热电两种能源以及两种制冷方法各自的优点,优化喷射制冷子系统工作性能的同时,改善压缩式子系统的工作条件,从而提高复合制冷循环性能的同时节约高品位电能。采用性能较好的高蒸发温度式喷射制冷带走压缩机排气余热具有实际意义。通过数值模拟的手段分析系统性能及其主要影响因素,并优化工作条件。研究表明,与相同工作条件下的单压缩制冷循环相比,复合制冷循环工作日全天候运行时电力性能系数提升约为31.5%,节电优势显著。存在一个最佳的喷射子系统蒸发温度使得复合制冷循环性能系数达到运行工况的最大值。 相似文献
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蓄冰式系统是通过冰的潜热(或包括水的显热)蓄冷性能,用离峰电力制冰,而在电力高峰时段融冰供冷。这降低了在电力高峰时段,对电力的需要量。蓄冰式系统在国外发展阶段是在八十年代。在我国,蓄冰系统还处于起步的初阶段级,这同我国的电价体制和蓄冰技术尚未成熟有关。一、若冰式系统的经济意义若冰式系统具有传统式空调冷源系统所没有的功能——空调负荷平移和空调负荷摊子功能。和传统式系统相比,很大不同是制冷的时间,即制冷时间段的不同或制冷的时间长度的不同。传统式空调冷源系统与空调时间上是同步的,而蓄冰式系统则不然。蓄… 相似文献
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描述了一种新型全新风空调机组,采取间接蒸发制冷与传统蒸汽压缩式制冷机结合,分析了这种机组的工作原理和制冷性能。 相似文献
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新型太阳能喷射与电压缩联合制冷系统研究 总被引:4,自引:1,他引:4
为提高太阳能与辅助能源的综合利用率,提出了一种新型的太阳能喷射式与电压缩式有机结合为一体的联合制冷系统,进而对这种新型联合系统及传统联合系统进行了热力学对比分析,对联合系统太阳能喷射式制冷时最佳发生温度进行了选择,并计算了典型年气象条件下两种联合系统相对于电压缩制冷系统的节能量及节能率。结果表明:两种联合系统相对于电压缩式制冷系统而言都是节能的,但新型联合制冷系统比传统联合制冷系统更节能,更能高效地综合利用太阳能与常规能源:在文中计算条件下,新型联合系统比传统联合系统多节能13.6%。 相似文献
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A data-mining approach for the optimization of a HVAC (heating, ventilation, and air conditioning) system is presented. A predictive model of the HVAC system is derived by data-mining algorithms, using a dataset collected from an experiment conducted at a research facility. To minimize the energy while maintaining the corresponding IAQ (indoor air quality) within a user-defined range, a multi-objective optimization model is developed. The solutions of this model are set points of the control system derived with an evolutionary computation algorithm. The controllable input variables — supply air temperature and supply air duct static pressure set points — are generated to reduce the energy use. The results produced by the evolutionary computation algorithm show that the control strategy saves energy by optimizing operations of an HVAC system. 相似文献
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《Energy Conversion and Management》2005,46(9-10):1655-1665
Locomotive drivers can feel uncomfortable in a torrid working environment, especially in the hot summer. The current locomotive driver cabin air conditioning system cannot meet the demands of operating conditions and environmental protection. A locomotive driver cabin adsorption air conditioning system has been developed. This new type of system employs zeolite–water as the working pair and is powered by waste heat from the exhaust gas of the internal combustion engine. Operating experiments of a prototype machine showed that this system has a lot of unique advantages compared to a traditional air conditioning system. It is feasible and practical to apply this system for locomotive driver cabin space cooling. The working principle of the system is introduced. Some experimental results are present. The characteristics of the system are discussed as well. 相似文献
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本文介绍了利用喷雾降温空调系统的设计和应用,在低成本条件下完成了工程项目并满足了橡胶片成型工厂的空调环境要求。本文给出了设计参数、空气处理过程、空调系统形式、自动控制方式及工程的调试和测试,分析了利用喷雾降温所能实现的空调环境状况。运行结果表明,系统设计合理,达到了预期效果,为同类工程提供了经验参考。 相似文献
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The regeneration system represents a vital part of any desiccant air conditioning system. The need of a solar assisted desiccant regeneration system is more important today. In this paper, an experimental study of a novel regeneration system modified from solar tilted still is carried out. A corrugated blackened surface is used to heat the desiccant and an air flow is used to regenerate calcium chloride solution. The effect of the liquid to air flow rate ratio; the desiccant temperature; the desiccant concentration and the inlet air humidity ratio on the evaporation rate has been studied experimentally. A wide range of liquid to air flow rate ratios are employed. The optimum value of the liquid to air flow rate ratio for higher evaporation rate is reported. 相似文献
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数码涡旋空调系统节能分析 总被引:3,自引:0,他引:3
目前变制冷剂流量空调系统越来越受到广泛的关注,而数码涡旋空调系统是变制冷剂流量空调系统中的一种新兴技术。介绍了数码涡旋压缩机技术,分析了数码涡旋空调系统的特点和节能因素,并将其与VAV(Variable Air Volume)空调系统进行对比,指出了数码涡旋空调系统是目前中央空调尤其是小型的中央空调系统的一个发展方向。 相似文献
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A feasibility study of open cycle air conditioning systems that use solid desiccants and solar energy has been performed. The two configurations evaluated are the ventilation mode, in which ambient air is continually introduced into the room, and the recirculation mode, in which room air is recirculated. Seasonal simulations for Miami, Florida, show that the auxiliary energy requirement for the ventilation mode is about one half that for the recirculation mode. The seasonal COP for the system using solar energy as the auxiliary is approximately 0.75. A conventional flat plate solar energy system of moderate size can provide a large fraction of the energy required to meet the sensible and latent loads of a typical house. 相似文献
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外墙保温技术对空调负荷的影响 总被引:8,自引:0,他引:8
采用建筑热环境模拟工具DeST对同一住宅建筑进行模拟计算,分析了不同气候地区外墙保温形式及保温层厚度对空调负荷的影响,并讨论了空调运行模式及自然通风模式的影响,可为不同气候地区的住宅建筑外墙隔热保温设计提供依据。 相似文献
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介绍了中国公共建筑中央空调系统能耗现状,分析了中国公共建筑中央空调系统在设计和运行管理中存在的问题,包括空调冷热负荷、空调系统新风量、空调冷热源、水系统和风系统的维护保养等,并提出了相应节能措施。 相似文献