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chendy6822

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棉花秸秆干燥需热量随着含湿量的增加而增加，这是因为水的汽化潜热高于干秸秆的热容，含湿量的增加直接导致了水分汽化热的增加；而干燥需热量随着干燥温度的降低而减少，这是由于较低的干燥温度只能除去部分水分且干燥速率也较低所致。

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1楼 2011-02-20 19:30:38

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爱与雨下

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chendy6822(金币+2): 2011-02-21 19:25:31

Heat needed to dry cotton straw increases with the increase of moisture content. This is due to the increase in moisture content directly which results the increase in the heat of water vaporization as the latent heat of water vaporization is larger than heat capacity of dry straw. While the drying heat decreases as drying temperature decreases because only little water can be removed and the drying rate is also lower at a lower temperature.

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3楼2011-02-21 08:51:24

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chendy6822(金币+3, 翻译EPI+1): 2011-02-21 19:25:26

Heat needed to dry cotton straw increases with the increase of moisture content. This because the increase in moisture content directly results in the increase in the heat of water vaporization because the latent heat of water vaporization is larger than heat capacity of dry straw. While the drying heat decreases as drying temperature decreases because only some of the water can be removed and the drying rate is also lower at a lower drying temperature.

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2楼2011-02-21 08:23:42

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