Adsorption Equilibria for Activated Carbon Fiber/Alcohol Pairs and Their Applicability to Adsorption Refrigerator.

Adsorption Equilibria for Activated Carbon Fiber/Alcohol Pairs and Their Applicability to Adsorption Refrigerator.
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活性碳纤维/酒精对的吸附平衡及其在吸附式制冷机中的适用性。

DOI:
10.1252/jcej.36.812
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发表时间:
2003
影响因子:
0.8
通讯作者:
Otsubo Shinya
Otsubo Shinya
中科院分区:
工程技术4区
文献类型:
--
作者:
M. Kumita;Shigeru Mori;Takeshi Yokogoshiya;Otsubo Shinya

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测定了活性炭纤维(ACF)和颗粒纤维(GAC)在30℃和50℃下的吸附平衡,并根据实验平衡曲线预测了较宽温度范围内的吸附等温线。根据预测的等温线,估计了典型工作温度条件下吸附式制冷机理想循环的冷却效果。结果表明,活性炭具有较大的表面积,对乙醇和甲醇蒸气均有较高的吸附能力。ACF/甲醇对的冷却效果估计超过300 kJ/kg,这些值大于GAC/甲醇对的冷却效果。此外,我们可以在不添加任何粘结剂的情况下,成功地从苯酚树脂纤维中制备出高堆积密度的ACF (HD-ACF)。制备的HD-ACF结构致密,纤维光滑,微孔主要分布在2 nm以下半径范围内。HD-FAC吸附乙醇和甲醇蒸气的速度与毡型ACF相当。在表观体积基础上,HD-ACF/甲醇对的冷却效果高达177 MJ/m3。因此,我们认为将该工作对应用于吸附式制冷机是可行的。
Adsorption equilibria of ethanol and methanol vapors on activated carbon fibers (ACF) and granular one (GAC) were measured at 30 and 50°C, and adsorption isotherms over a wide temperature range were predicted from the experimental equilibrium curves. The cooling effect in an ideal cycle of adsorption refrigerators was estimated under the typical operating temperature conditions from the predicted isotherms. The results obtained showed that the ACF with large surface area has high adsorptive capacity for both ethanol and methanol vapors. The cooling effect estimated for the ACF/methanol pair exceeded 300 kJ/kg, and these values were greater than those for the GAC/methanol pair. Furthermore, we could successfully prepare ACF with high bulk density (HD-ACF) from phenol resin fibers without adding any binders. The prepared HD-ACF has a dense structure with smooth fibers, and has micropores mainly in the range of the radius below 2 nm. The HD-FAC adsorbed rapidly ethanol and methanol vapors comparable to the felt-type ACF. The cooling effect on the apparent volume basis showed an extremely high value of 177 MJ/m3 for the HD-ACF/methanol pair. Therefore, we concluded that it is feasible to apply this working pair to adsorption refrigerators.
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DOI: --
发表时间: 2011
期刊:
影响因子: --
作者:
中島幸彦;他
通讯作者: 他