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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >An experimental investigation of moisture absorption and condensation in fibrous insulations under low temperature
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An experimental investigation of moisture absorption and condensation in fibrous insulations under low temperature

机译：低温下纤维绝缘体吸湿和凝结的实验研究

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摘要

This paper reports on an experimental investigation on the temperature and water content distribution within the porous fibrous battings sandwiched by an inner and outer layer of thin covering fabrics using a novel sweating, guarded hot plate. Experimental results for four combinations out of two types fibrous battings (one hydrophobic and non-hygroscopic polyester and the other hydrophilic and hygroscopic viscose) and two types of covering fabrics (one highly permeable nylon fabric and the other less permeable laminated fabric) have been obtained. It was found that most of the changes in temperature distribution took place within 1/2 h of the tests and moisture absorption by the hygroscopic fibers affects the temperature distribution. The water content accumulates with time and higher water content was found at the outer regions than that at the inner regions of the battings. The accumulation and distribution of water content is a combined result of moisture absorption, condensation and liquid water movement. Further theoretical modeling based on the reported experimental results is needed in order to better understand the mechanism. (C) 2003 Elsevier Science Inc. All rights reserved. [References: 23]
机译：本文报道了一种实验研究，该实验使用新颖的防汗热板对由薄覆盖织物内外层夹在中间的多孔纤维棉絮中的温度和水分分布进行了研究。获得了两种类型的纤维棉絮（一种疏水性和非吸湿性聚酯纤维，另一种亲水性和吸湿性粘胶纤维）中的四种组合以及两种类型的覆盖织物（一种高渗透性尼龙织物和另一种低渗透性层压织物）的实验结果。 。结果发现，温度分布的大多数变化发生在测试的1/2小时内，吸湿纤维吸收水分会影响温度分布。含水量随时间累积，并且发现棉絮的外部区域的水含量高于棉絮内部的水含量。水分的积累和分布是水分吸收，冷凝和液态水运动的综合结果。为了更好地理解该机理，需要基于报道的实验结果进行进一步的理论建模。 （C）2003 Elsevier Science Inc.保留所有权利。 [参考：23]

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