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介绍太阳能集热器和氨水吸收式制冷机的结构、原理和特点,对利用太阳能驱动氨-水吸收式制冷空调的可行性进行分析探讨,阐述研制开发太阳能氨水吸收式制冷空调对节能降耗保护环境的意义. 相似文献
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综述火电厂低温余热利用技术的特点及应用现状,并对各种技术进行了对比分析,其中集中式吸收式热泵供热技术在当前应用最广泛,是最具发展前景的技术。苇湖梁电厂低温余热利用项目是集中式吸收式热泵125MW水冷机组技术在国内的首次工程应用,项目具有显著的节能效果,可实现年节约标煤41688t,节水65.88万t。 相似文献
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吸收式制冷技术的应用与发展 总被引:5,自引:1,他引:4
王长庆 《能源技术(上海)》2000,21(1):31-35
溴化锂吸收式制冷技术在我国得到了飞速发展和广泛应用。介绍了溴化锂吸收式制冷技术在我国应用情况,对单效机,双效机及直燃机的应用场合进行了分析,同时对溴化锂吸收式制冷技术将来的发展进行了展望。 相似文献
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介绍了一种将太阳能相变蓄热技术应用于两级吸收式制冷的新型空调系统,简要分析了该系统的装置结构、工作原理和使用优点。对相变蓄热装置放热过程中放热盘管出水温度随放热时间的变化关系进行了实验测量,并对两级吸收式制冷系统效率进行了分析。通过研究可知,该太阳能空调系统有效解决了以往系统不稳定性和间断性问题;太阳能相变蓄热装置具有体积小、蓄热量大、放热速率大、连续放热温度均匀、便于控制热源加热温度等特点,适合储存太阳能并为吸收式制冷系统提供加热热源。综合考虑系统设备简单,加工要求低的制造特点,所以吸收式制冷以太阳能等低品位热源驱动有着良好的发展前景。 相似文献
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《Applied Thermal Engineering》2014,62(2):424-432
Large scale heat-driven absorption cooling systems are available in the marketplace for industrial applications but the concept of a solar driven absorption chiller for air-conditioning applications is relatively new. Absorption chillers have a lower efficiency than compression refrigeration systems, when used for small scale applications and this restrains the absorption cooling system from air conditioning applications in residential buildings. The potential of a solar driven ammonia–water absorption chiller for residential air conditioning application is discussed and analyzed in this paper. A thermodynamic model has been developed based on a 10 kW air cooled ammonia–water absorption chiller driven by solar thermal energy. Both energy and exergy analyses have been conducted to evaluate the performance of this residential scale cooling system. The analyses uncovered that the absorber is where the most exergy loss occurs (63%) followed by the generator (13%) and the condenser (11%). Furthermore, the exergy loss of the condenser and absorber greatly increase with temperature, the generator less so, and the exergy loss in the evaporator is the least sensitive to increasing temperature. 相似文献
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第二类LiBr-H2O吸收式热泵热力循环分析 总被引:10,自引:1,他引:10
本文对以LiBr-H2O为工质对的第二类吸收式热泵即吸收式热变换器(absorption heat trans-former)的热力循环过程进行了模拟计算。详尽分析研究了循环倍率、稀溶液的浓度、蒸发温度、冷凝温度对系统的性能系数COP、发生温度、吸收温度、工业余热提升温度的影响规律。模拟计算的结果与作者研制开发的工业规模第二类吸收式热泵系统的性能测试数据进行了对比,结果表明,理论模拟计算的结果同实测的数据吻合较好。所得到的规律性将为这类吸收泵性能的提高、系统的优化设计与工业开发提供了必要的理论依据。 相似文献
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对车用发动机NVH试验室的工程设计和声学设计的要求进行了分析总结,综合研究了工程设计中工艺、建筑、结构、暖通和水电系统的设计要求,提出相应施工技术方案,明确了试验室吸声隔声组件和材料选择方面的要求,分析了NVH试验室隔声和隔振设计的方法。 相似文献
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《Applied Thermal Engineering》2003,23(6):757-767
A large amount of consumed energy is released to the environment as waste heat, which may be used directly in some applications for useful purposes. Thus, from the standpoint of energy conservation, it will be meaningful to investigate systems with waste heat utilization. It has long been indicated that absorption cycles may have good potential applications for enhancing energy conservation via waste heat recovery. As such they have often been identified as an appropriate subject for research and development. Along this line, this paper also examines the development of an absorption cycle with waste heat utilization. More specifically, this study investigates a double-effect LiBr–water absorption cycle which uses exhaust gases from the burner of the high-temperature generator to preheat the weak absorbent solution on its way from the absorber to the low-temperature generator. The overall performance of the absorption heater/chiller system is analyzed and discussed on the basis of experimental results. 相似文献