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现行 4669 – Thermal Analysis of Solar-Powered Continuous Adsorption Air-Conditioning System
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Thermal Analysis of Solar-Powered Continuous Adsorption Air-Conditioning System 太阳能连续吸附式空调系统的热分析
建立了一个简单的集总参数模型,以研究平板式太阳能集热器驱动的太阳能吸附式空调系统的性能。根据温度历史、总太阳能性能系数和比冷却功率,测量了使用双吸附器以及热回收的连续吸附循环的动态性能。此外,还研究了一些重要的设计和运行参数对系统性能的影响。研究表明,吸附剂质量和集总电容对系统性能以及系统尺寸有显著影响。 模拟结果表明,当循环持续时间较长时,总传热系数的影响并不显著。此外,存在启动吸附床加热的最佳时间,以及一天操作中可执行的循环次数。单位:SICitation:ASHRAE交易,第110卷,pt。1.
A simple lumped parameter model is established to inves¬tigate the performance of a solar-powered adsorption air-conditioning system driven by flat-type solar collectors. The dynamic performance of a continuous adsorption cycle using a double adsorber along with heat recovery is measured in terms of the temperature histories, gross solar coefficient of performance, and specific cooling power. Also, the influences of some important design and operational parameters on the performance of the system are studied. The study shows that the adsorbent mass and lumped capacitance have a significant effect on the system performance as well as on the system size. Simulation results indicate that the effect of the overall heat transfer coefficient is not predominant if the cycle duration is longer. Also, there exists an optimum time to initiate the heating of the adsorbent bed and the number of cycles that can be performed in a day’s operation.Units: SI
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