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首页> 外文期刊>ACS Omega >Comparison of the Moisture Adsorption Properties of Starch Particles and Flax Fiber Coatings for Energy Wheel Applications
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Comparison of the Moisture Adsorption Properties of Starch Particles and Flax Fiber Coatings for Energy Wheel Applications

机译：淀粉颗粒和亚麻纤维涂层水分吸附性能的比较

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The adsorption–desorption behavior of flax fibers (FFs) is reported in this paper. FFs are a potential desiccant material for air-to-air energy wheels, which transfer heat and moisture in building heating, ventilation, and air conditioning (HVAC) systems. The raw FFs sample was subjected to physical modification, followed by complementary material characterization to understand the relationship between its structure and its moisture uptake performance. The surface and textural properties of the modified FFs were determined by gas adsorption (N_(2), H_(2)O) and gravimetric liquid water swelling studies and further supported by spectroscopic (infrared and scanning electron microscopy) results. A FF-coated small-scale energy exchanger was used to determine the moisture transfer (or latent effectiveness; ε_(l)) using single-step and cyclic testing. The FF-coated exchanger had ε_(l) values of ～10 and 40% greater compared to similar exchangers coated with starch particles (SPs) and silica gel (SG) reported in a previous study. The enhanced surface and textural properties, along with the complex compositional structure of FFs and its greater propensity to swell in water, account for the improved performance over SPs. Thus, FFs offer an alternative low-cost, environment-friendly, and sustainable biodesiccant for air-to-air energy wheel applications in buildings. The current study contributes to an improved understanding of the structure–function relationship of biodesiccants for such energy wheel applications.
机译：本文报道了亚麻纤维（FFS）的吸附 - 解吸行为。 FF是用于空对空能量轮的潜在干燥材料，其在建筑加热，通风和空调（HVAC）系统中转移热量和水分。对原料FFS样品进行物理改性，然后进行互补材料表征，以了解其结构与其水分吸收性能之间的关系。通过气体吸附（N_（2），H_（2）O）和重量液水溶性研究和重量液水溶胀研究并进一步支持改性FF的表面和纹理性质，并通过光谱（红外和扫描电子显微镜）结果进一步支持。使用FF涂层的小型能量交换器来确定使用单步和循环测试来确定湿度转移（或潜伏的效率;ε_（l））。与先前研究中报道的淀粉颗粒（SPS）和硅胶（SG）涂覆的类似交换剂相比，FF涂覆的交换剂的ε_（1）值〜10和40％的值。增强的表面和纹理性质，以及FF的复杂组成结构及其在水中膨胀的更大倾向，占SPS的改善性能。因此，FFS为建筑物中的空对空能源轮应用提供替代的低成本，环保和可持续的生物渗透剂。目前的研究有助于改善对这种能源轮应用的生物淤积剂结构功能关系的理解。

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