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首页> 外文学位 >ADIABATIC ADSORPTION OF WATER VAPOR ON ZEOLITE 13X: APPLICATION FOR A DESICCANT HEAT PUMP.
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ADIABATIC ADSORPTION OF WATER VAPOR ON ZEOLITE 13X: APPLICATION FOR A DESICCANT HEAT PUMP.

机译：在13X沸石上对水蒸气的绝热吸附：用于干燥的热泵。

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Experimental studies were conducted under adiabatic conditions using fixed beds of Zeolite 13X for the removal of water vapor from a stream of flowing air. Bed depths of 1.5, 4.0 and 10.0 cm were used with the inlet humidity and air flowrate varied between runs. The measured quantities were the outlet air temperature and humidity. For the experimental conditions in this work, temperature increases of over 30(DEGREES)C were easily obtained, with the highest being 52.5(DEGREES)C.; Information extracted from the experimental data was used to develop an expression for the rate of adsorption as a function of the average bulk humidity, air flowrate and water content of the zeolite. The rate expression, when coupled with the differential heat and mass balances for the bed, describes the transient behavior of the adsorption column. The resulting equations were solved numerically for the temperature and water concentration of the solid and air as a function of time and bed position. Calculated breakthrough curves using the correlated rate were compared with those generated by a more rigorous model that combines fluid film and particle diffusion transport. The correlated rate produced closer agreement with experimental findings and required much less computing time. From the experimental and theoretical findings, it was determined that a heat pump utilizing Zeolite 13X, water vapor and air as working fluids was feasible.
机译：在绝热条件下，使用固定床Zeolite 13X进行了实验研究，以从流动的空气流中去除水蒸气。床深度为1.5、4.0和10.0 cm，入口湿度和空气流量在运行之间变化。测得的量是出口空气的温度和湿度。对于这项工作的实验条件，很容易获得超过30（DEGREES）C的温度升高，最高为52.5（DEGREES）C。从实验数据中提取的信息用于得出吸附速率的表达式，该吸附速率是沸石的平均体积湿度，空气流速和水含量的函数。速率表达式与床的热量和质量平衡差相结合时，描述了吸附塔的瞬态行为。对所得方程进行了数值求解，以得出固体和空气的温度和水浓度与时间和床位的函数关系。将使用相关速率计算的穿透曲线与通过结合流体膜和颗粒扩散传输的更严格模型生成的穿透曲线进行了比较。相关速率与实验结果产生了更紧密的一致性，并且需要更少的计算时间。从实验和理论发现，可以确定采用Zeolite 13X，水蒸气和空气作为工作流体的热泵是可行的。

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