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文章设计了以活性炭/异丁烷为工质对的直接再生吸附制冷装置,建立了吸附床换热系数计算模型,分析了换热流体流量和床层空隙率变化对直接再生吸附床层传热特性的影响。结果表明:吸附床的换热系数随流体流量增加先增大后稳定不变;水的流量低于15L/h或异丁烷流量低于1200L/h时,随着空隙率增大,床层换热系数逐渐减小;水的流量大于15L/h或异丁烷流量大于1200L/h时,随着空隙率增大,床层换热系数维持在最大值不变。
In this paper, a direct regenerative adsorption refrigeration plant with activated carbon / isobutane as working fluid pair was designed. The calculation model of heat transfer coefficient of adsorbent bed was established. The heat transfer coefficient of fluid flow rate and bed voidage was analyzed. Effect of characteristics. The results show that the heat transfer coefficient of the adsorbent bed increases first and then stabilizes with the increase of the fluid flow rate. When the water flow rate is less than 15L / h or the isobutane flow rate is lower than 1200L / h, The heat transfer coefficient decreases gradually; when the water flow rate is more than 15L / h or the isobutane flow rate is more than 1200L / h, the heat transfer coefficient of the bed remains unchanged at the maximum as the porosity increases.