Feasibility study of simultaneous heating and dehumidification using an adsorbent desiccant wheel with humidity swing
Feasibility study of simultaneous heating and dehumidification using an adsorbent desiccant wheel with humidity swing
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DOI：
10.1016/j.applthermaleng.2017.02.067
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发表时间：
2017-05
影响因子：
6.4
通讯作者：
T. Tsujiguchi;Y. Osaka;A. Kodama
中科院分区：
文献类型：
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作者：
T. Tsujiguchi;Y. Osaka;A. Kodama
吸附式干燥剂通过吸附产生热量，可用于空间供暖。理论上，处理空气和再生空气之间的相对湿度差足以使水蒸气吸附到干燥剂轮上和从干燥剂轮上解吸。利用这一现象，我们提出了一种除湿轮，使用变湿吸附（HSA），提供同时加热和除湿。我们首先实验研究的温度和湿度的吸附空气在入口和出口的除湿轮的差异。我们证实，在再生空气和再生空气之间只有绝对湿度差异的情况下，会发生温度升高。对于25 °C和15 g/kg-DA以及25 °C和3.6 g/kg-DA的吸附和解吸入口空气，假设绝热膨胀，理论最大温升估计为15 °C。实验测量的温升降低至9.4 °C，主要是由于实验中使用的轮的热容量。发现在我们的实验条件下，需要大于13 °C的再生温度以获得加热效果。
Adsorptive desiccant dehumidification generates heat from adsorption, which can be used for space heating. Theoretically, a difference in relative humidity between the process air and the regeneration air is sufficient to produce the adsorption and desorption of water vapor onto and from the desiccant wheel. Taking advantage of this phenomenon, we proposed a desiccant wheel that used humidity swing adsorption (HSA), offering simultaneous heating and dehumidification.We first experimentally investigated the differences in the temperature and humidity of the adsorption air at the inlet and outlet of the desiccant wheel. We confirmed that the dehumidification and a rise in temperature occurred with only a difference in absolute humidity between the dehumidification and regeneration air. The theoretical maximum temperature rise assuming adiabatic dehumidification was estimated to be 15 °C for adsorption and desorption inlet air of 25 °C and 15 g/kg-DA and 25 °C and 3.6 g/kg-DA. The experimentally measured temperature rise was decreased to 9.4 °C mainly due to the heat capacity of the wheel used in the experiments. It was found that a regeneration temperature greater than 13 °C was required to obtain a heating effect under our experimental conditions.