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Pore structure of new composite adsorbent SiO_2·_xH_2O· yCaCl_2 with high uptake of water from air 总被引:2,自引:0,他引:2
The adsorption/desorption property of adsorbent is crucial to the performance and efficiency of a system of extracting water from atmosphere. Several kinds of adsorbent can adsorb water vapor in air, such as molecular sieve and silica gel. But their equilibrium uptake is not high. The authors have prepared a new composite adsorbent——SiO2·xH2O·yCaCl2, which is composed of macro-porous silica gel and calcium chloride. The preparation process is as follows: immerge macro-porous silica gel … 相似文献
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针对不同倾斜角度的翅片管换热器,本文研究其在自由进风及受限进风条件下的换热及压降特性。针对各种倾斜角度,本文分别在自由及受限进风情况下,通过每组5个不同中心水温的实验进行研究。实验结果表明,换热系数受进风条件以及换热器倾斜角度的影响较大。正的倾斜角度的换热效果优于负的倾斜角度。在正倾斜角度下,自由进风的换热效果又优于受限进风,负倾斜角度结果恰恰相反,但是同一倾斜角度下的换热器换热系数受进风角度的影响很小。换热器空气侧的压降只与换热器的倾斜角度有关,基本不受风管存在与否的影响,并且进风角度的不同对其也无影响;换热器的倾斜角度越大,压降越大。 相似文献
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Noisy film boiling, which is characterized by a loud noise and severe mechanical vibration, is a particular phenomenon of superfluid helium II (He II). Experiments have been conducted under various thermal conditions by varying the heating time th and the heat flux q, and the temperature oscillation during noisy film boiling is measured by the superconductor temperature sensors in order to understand the physical mechanism of noisy film boiling. 相似文献
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针对上海某档案库房的地源热泵恒温恒湿空调系统,研究了冬夏季节不同室内设计温度对系统运行特性的影响。实验结果表明,冬夏季节的两种不同工况均能满足档案库房室内温湿度的控制要求。理论分析结果表明,夏季工况时,随着室内设计温度的升高,地源热泵恒温恒湿空调机组的COP基本保持不变,约为5.0,但减少了向土壤的排热量;冬季工况时,室内设计温度升高时,地源热泵恒温恒湿空调机组的COP略有升高,并且增加了从土壤中的取热量。综合考虑系统的节能性、稳定性以及档案保存的特殊性,夏季室内设计温度建议为22℃~24℃,冬季室内设计温度建议为23℃~24℃。 相似文献
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