共查询到17条相似文献,搜索用时 46 毫秒
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太阳能吸附式制冷技术是一种非常具有实用意义的技术,可以应用在很多相关领域,但是目前还未得到广泛的应用。主要介绍太阳能吸附制冷技术的发展背景和系统原理,并从集热方式、工质对、系统改进等三个方面分析该技术的发展情况,指出该项技术的广阔应用前景。 相似文献
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太阳能固体吸附式制冷技术应用的一些探讨 总被引:2,自引:0,他引:2
总结了自行设计的太阳能固体吸附式制冷装置所取得的一些成果,对太阳 能固体吸附式制冰机系统的实际应用从工艺上、操作上、成本上作了分析与说明,并对 进一步开展太阳能固体吸附式制冷装置的研究作出了展望。 相似文献
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本文阐述了太阳能作为驱动热源的固体吸附式制冷系统循环过程的工作原理,并对在一定太阳辐射条件下太阳能固体吸附式制冷系统内循环参数之间的影响,系统的COP做了热力分析计算。 相似文献
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本文在介绍太阳能吸附式制冷技术的发展背景及系统的工作原理的基础上,对其技术方面及研究进展做了分析,同时也对太阳能固体吸附式制冷存在的问题进行了概括,进一步明确了其研究方向。 相似文献
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太阳能吸附式制冷关键技术的研究 总被引:2,自引:0,他引:2
介绍了太阳能吸附式制冷技术,指出了其存在的问题,并对太阳能吸附式制冷的关键技术的研究现状进行深入的分析和探讨,进一步明确其研究方向. 相似文献
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An improved adsorption model for adsorption refrigeration pairs such as activated carbon–methanol and zeolite–water is suggested based upon normal Dubinin adsorption equations. This model has been verified by various experimental results. Copyright © 1999 John Wiley & Sons, Ltd. 相似文献
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This paper describes an experimental investigation of adsorption refrigeration with a single generator (adsorbent bed) in a basic cycle, which verifies the previous theoretical conclusions that the cycle time and the maximum desorption temperature (corresponding to the maximum temperature of external heat source) are key factors with various influences to the COP and the cooling capacity of a cycle on a prototype machine. Moreover, in order to investigate the difference between theoretical and real cycles, a new physical parameter, the packing coefficient, is introduced to the adsorption cycle © 1998 John Wiley & Sons Ltd. 相似文献
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Simulation and optimization of a novel solar-powered adsorption refrigeration module 总被引:1,自引:0,他引:1
A mathematical model has been developed to simulate and optimize the performance of a solar-powered adsorption refrigeration module with the solid adsorption pair of domestic type of charcoal and methanol. The module is composed of a modified glass tube having a circular generator (sorption bed) at one end and a combined evaporator and condenser at the other end. The charcoal is mixed with small pieces of blackened steel to enhance the heat transfer in the sorption bed. Simple arrangement of plane reflectors is used to heat the generator. The angles of inclination of the reflectors are chosen according to optical and thermal analysis to receive maximum solar energy at noontime. The model accounts for transient heat and mass transfer inside the bed of the module. After an experimental validation based on the results of previous tests of this module, the effects of design and climatic conditions on the module performance all year round are discussed and optimized.It is found by virtue of using the proposed reflector arrangement, solar energy input to the system increases especially in cold climate. This increase ranges from 10% for hot climate to 30% for cold climate.The effects of using steel additives inside the sorption bed and using glass shell over the bed are investigated. It is found that the percentage increase in desorped methanol ranges from 3% in the hottest month to about 19% in the coldest month as a result of using a mass of steel pieces equal about 33% of the mass of the charcoal, (Mst/Mch = 0.33). These improvements increase to 7% and 43% in the hottest and coldest months respectively when glass shell is used over the bed. Generally, the improvements are more pronounced in cold months than hot ones.The ratio Mst/Mch inside the sorption bed is optimized and found to be 0.75. Comparison between the model results for the steel additives ratio Mst/Mch = 0.33 and results obtained with the optimum ratio shows that, the yearly average ice production increases from 0.23 to 0.25 kg/day, the yearly average bed efficiency increases from 55.2% to 58.5%, and the yearly average net COP increases from 0.146 to 0.1558.The effect of climatic conditions on the module performance all year round is also investigated. It is found that, about 28% of the cooling energy is lost due to climate effect in hot months and this ratio reaches 17.5% in cold months. 相似文献
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太阳能溴化锂吸收式制冷技术的研究进展 总被引:1,自引:0,他引:1
介绍了太阳能澳化锂吸收式制冷循环的工作原理和系统构成,具体阐述了该制冷循环的几种典型结构,包括单效、双效、两级以及三效涣化锂吸收式制冷循环,分析了各种制冷循环的优缺点以及目前研究进展;进一步讨论了太阳能澳化锂吸收式制冷机组的性能特点受冷媒水出口温度、冷却水进口温度、加热蒸汽温度、污垢系数及不凝性气体等诸多因素的影响;提出了太阳能溴化锂吸收式制冷技术现存问题,最后指出,随着科学技术的发展和绿色建筑的兴起,太阳能溴化锂吸收式制冷将会有非常大的发展前景。 相似文献