共查询到17条相似文献,搜索用时 921 毫秒
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回热型吸附式空调系统三热源模型 总被引:1,自引:0,他引:1
该文着重于回热型吸附空调系统研究的第一部分工作-建模,基于回热型吸附空调系统工作原理和内可逆三热源循环概念,文中分析了该系统中热力系与外界相互作用和热力系各工作过程的热平衡,建立了该系统的三热源模型,该模型同时采用了热力学第一定律和第二定律,并考虑了有限速率传热导致的不可逆性因素,故解释了系统制冷系数COP远低于可逆循环的原因,文中给出了一个具体算例说明了此三热源模型的求解,并预测系统变工况特性,按模型设计的系统样机能良好,模型计算结果在第二部分工作的实践中获得验证。 相似文献
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基于双床吸附连续制冷的理论,提出了一种聚光连续型高效智能吸附式空调系统,将聚光光伏技术和吸附式制冷技术相结合,形成冷、热、电联产一体化的新思路。系统设计围绕连续回热型的吸附制冷循环、太阳能聚光器、光伏电池板3个重要方面,提出太阳能3个层次优化利用,进一步强化传热和提高能源利用率,为丰富发展吸附式空调系统理论、低成本高效利用太阳能提供技术支持。 相似文献
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螺旋板式吸附器的应用及连续回热型吸附式制冷循环的实现 总被引:6,自引:0,他引:6
吸附式制冷系统中一有的各种吸附器在应用过程中都存在一些缺点。我们设计了一种螺旋板式吸附器,并将其成功地应用在采用活性碳-甲醇为工质对的连续回热型吸附式制冷系统中。实验中该吸附器显示了良好的性能,可以使循环周期大大缩短。通过对建造的连续回热型吸附式制冷系统性能的测试分析,指出了原有连续回热型吸附式制冷系统的弊端,着重讨论了实现连续回热型循环的有效途径。 相似文献
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新型太阳能吸附式制冷系统研究 总被引:2,自引:0,他引:2
提出用玻璃材料(玻璃管)代替金属材料做太阳能吸附式制冷系统的太阳能集热器和吸附床,建立了一套该种系统的试验样机,并在实验里对样机进行了试验研究。试验数据和结果表明,该系统的运行可靠,证明以玻璃管(真空管)做太阳能吸附式制冷系统的集热器和吸咐床是可行的。 相似文献
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通过对宁波银凤度假村空调系统的比较,分析了分体式水源热泵空调系统的优势并提出了对今后设计、施工中应注意的几点意见。 相似文献
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《Applied Thermal Engineering》2001,21(12):1203-1217
The technology for the night-time cooling of buildings has been significantly improved with the development of a working prototype of a latent heat storage system. The system, introduced in a previous paper, incorporates heat pipes embedded in phase change material. An improved unit design is presented, and the design, construction and testing of the prototype is reported, including measurements of heat transfer rates. Heat transfer rates of 200 W have been observed, which is sufficient to ameliorate the effects of high summer temperatures. There are substantial cost and energy-saving benefits to the system, both compared to conventional air conditioning and other technologies such as cooled beams, and the system can easily be retro-fitted. It is recommended that further developmental work be carried out to produce a pre-production prototype. 相似文献
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地源热泵空调系统的自动控制,是相关设计环节当中的要点工作。针对这一方面的内容展开论述,分析了地源热泵空调系统的自动控制策略,并且对相关工作的研究以及实现进行了细致的探究,旨在更进一步促进地源热泵空调系统节能性以及操作性的提高,全面改进传统设计工艺中的不足之处,进而为现代化的空调系统质量的改进奠定坚实的基础条件。 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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An air conditioning option, that is, desiccant cooling system (DCS) in which alternative energy source, such as solar energy, nature gas and rejected heat, can play their part for the benefit of environment and saving energy is constructed by regenerative dehumidification component combined with heat exchanger (recuperator) and evaporative cooler.The mathematical model of an rotary desiccant wheel that can be used to calculate the performance of stationary or rotary bed and transient or steady state operation is founded by considering many terms. A computer program for this new model has been compiled and some results of computer simulation compared with experimental value, they are good in agreement.The performance of evaporator is estimated by computer. We developed some kinds of evaporator of which the COP is about 1015 to decrease the room temperature and clean the air in drier climates. Using a new kind of chemical refrigerant invented by Zu-She Liu, the air conditioner will be simple in construction and very efficient (COP > 30). 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
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为了满足农村住宅清洁用能的需求,多种形式的能源系统逐渐开始应用于广大的农村地区。随着太阳能集热器集热效率的提高,热驱动机组各项性能不断改善,这样有利于太阳能吸收式空调系统在农村地区的应用。为了研究太阳能吸收式空调系统与农村住宅全年能耗的匹配问题,文章首先建立了DeST住宅模型,然后利用TRNSYS软件建立了太阳能吸收式空调系统模型,最后根据模拟结果对国内不同气候区内农村住宅供热季、供冷季的平均热负荷值,以及全年的能耗进行分析。此外,文章还分析了典型日太阳能吸收式空调系统的运行策略与效果。分析结果表明:在无辅助热源的条件下,太阳能集热器的集热温度会大于80℃,满足空调机组的热驱动温度,因此可以作为太阳能吸收式空调系统的的热源;当启动温度为85℃时,空调机组的制冷量可以达到8 kW,性能系数COP为0.733。 相似文献