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大力推广吸收式制冷机 发展热电冷联合生产 总被引:3,自引:0,他引:3
一、蓬勃发展的制冷空调市场随着改革开放的不断扩大和深入,我国国民经济生产总值增长迅速,人民生活水平也有着大幅度提高,过去主要只用于食品冷库冷藏、化工、制药、纺织等领域的制冷行业近些年来得到了特别迅猛的发展,除了电冰箱之外,食品冷期藏链的其它各个环节和空调器的应用与发展也突飞猛进。尤其是空调装置,已成为现代化的标志之一,成为新的消费热点,全国制冷空调所耗电能已占全国年发电量的相当份额。近年来国家年发电装机容量虽以8000~ 相似文献
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1概述当今,国民经济生产和人们生活均用电制冷。冷冻、冷藏、空调降温已成为能源消费主要组成之一,尤其是在夏季,制冷耗电猛增。在目前能源发展过程中,能源消耗结构,一方面自给率逐步走低,另一方面煤炭消费一直保持较大比重,导致能源供应和交通运输局面极为严峻。为此,确定合理的可行的能源消耗结构,如何充分利用能源资源特点,是能源发展中极为重要的问题。利用太阳能制冷,其主要优点是能有效吸收太阳能和消耗自然冷(风、水),在这种情况下,它的效益是双倍的,因为太阳的照射被太阳能收集器所遮盖,不仅减少了这部分照射热能… 相似文献
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目前,电动的蒸汽压缩式制冷方式占据着主导地住.在我国,随着制冷和空调的迅速发展,不仅加剧了电力供应紧张的局面,而且面对着环境污染的严峻课题.本文综述我国溴化锂吸收式热泵技术发展概况,以及有关企业和地区推广应用溴化锂制冷技术于热电冷联产的情况,并作了能源利用和环境污染的分析,指出推广应用溴化锂制冷技术于热电冷联产是我国能源利用和制冷空调的一个发展方向. 相似文献
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制冷低温技术的节能应用与太阳能固体吸附式制冷技术研究 总被引:2,自引:0,他引:2
介绍了制冷低温技术领域中的一些国内外研究热点,对当前所涉及的一些较先进的制冷空调技术原理作了分析探讨,并结合当前节能工作的开展对这些新技术的运用作了概括总结。还对以太阳能作为驱动热源的吸附式制冰机的原理、能量转换及热力循环过程进行了较为详细的阐述,以期该技术能像太阳能热水器一样尽快走入大众之家。 相似文献
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Cooling, refrigeration, and air conditioning processes are considered essential needs and major requirements for all human beings in our world today. However, the traditional vapor compression machines are dominating electricity consumers and their operation and propagation cause high electricity peak loads during the summer, especially in those countries with tropical climate. That is besides their refrigerants having high global warming as well as ozone layer depletion potentials. Providing cooling by utilizing a green energy such as solar energy is the key solution to electricity and pollution problems. Adsorption refrigeration systems that are driven by solar energy are mature technologies. They are proven to be suitable and applicable for refrigeration as well as air-conditioning applications. Solar adsorption cooling technology is divided into physisorption and chemisorption systems. The physisorption machines include open and closed cycle operation. This paper presents a review on previous researches and developments of the solar driven closed physisorption refrigeration systems. The discussion includes, experimental and numerical simulation studies as well as methods that are suggested to improve the system performance. 相似文献
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油田区域地热资源十分丰富,并且存在大量的用热需求。在油田地区综合开发地热能,不仅可以解决油田伴热、社区供暖/制冷等问题,还可以降低环境污染,减少二氧化碳的排放,有利于油田的持续稳定发展。基于海南福山油田的地热资源条件及用能需求,将油田生产伴热、热泵尾水升温和地热驱动吸收式制冷技术相结合,设计了多种油田地热能综合利用方案,并计算比较了各个方案的经济收益,进一步分析了地热水温度和流量对各个方案适用性的影响,研究结果可为其他油田区域地热资源的综合开发利用提供参考。 相似文献
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采用双效固体吸附式制冷技术开发了热电厂新型集中供冷系统,该系统结构简单,性能可靠,投资低,耗电少,无污染,不但可为全厂提供空调用冷,而且可大幅度提高电厂机组热经济性,具有显著的节能与环保效果。 相似文献
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Rotary desiccant air conditioning system, which combines the technologies of desiccant dehumidification and evaporative cooling, is advantageous in being free from CFCs, using low grade thermal energy and controlling humidity and temperature separately. Compared with conventional vapor compression air conditioning system, it preserves the merits of environment-friendly, energy saving, healthy, comfortable, etc. Ongoing research and development works suggest that new desiccant materials and novel system configurations have significant potential for improving the performance and reliability and reducing the cost and size of rotary desiccant dehumidification and air conditioning system, thereby increasing its market competitiveness and breaking out the current fairly small niche market. For the purpose of providing an overview of recent efforts on these issues and showing how rotary desiccant air conditioning systems can be designed and coupled to available thermal energy, this paper presents and analyzes the status of rotary desiccant dehumidification and air conditioning in the following three aspects: the development of advanced desiccant materials, the optimization of system configuration and the utilization of solar energy and other low grade heat sources, such as solar energy, district heating, waste heat and bioenergy. Some key problems to further push forward the research and development of this technology are also summarized. 相似文献
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The heat transfer performance and energy consumption of various thermal devices may be augmented by active and passive techniques. One of the passive techniques is the addition of nanoparticles to the common heat transfer fluids so that the thermal transport properties of the prepared suspension (called nanofluid) will be enhanced as compared to the base fluid. Nanorefrigerants are a special type of nanofluids which are mixtures of nanoparticles and refrigerants and have a broad range of applications in diverse fields for instance refrigeration systems, air conditioning systems, and heat exchangers. This review is performed in order to clarify the effect of nanorefrigerant properties on heat transfer and pressure drop compared to pure refrigerant. Moreover, studies related to the thermophysical properties, and applications of nanorefrigerants to some specific areas such as domestic refrigerators, heat pipes and air conditioners are also summarized. 相似文献
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热回收蓄能空调系统的应用研究 总被引:7,自引:0,他引:7
本文重点阐述了热回收技术和蓄能技术在空调系统中的应用,在工作原理、节能循环分析、经济性分析、控制和应用注意事项等多方面进行了初步研究,研究结果表明该节能技术在制冷空调系统中的运用大有前途,可以得到大力的推广。 相似文献