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首页> 外文期刊>配管·装置·プラント技術 >Heated air drying of garlic bulb in air-bag type dryer (part 2)-improvement in energy use by partial recirculation of exhaust air
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Heated air drying of garlic bulb in air-bag type dryer (part 2)-improvement in energy use by partial recirculation of exhaust air

机译：气囊型干燥机中的大蒜灯泡的加热空气干燥（第2部分） - 通过部分再循环排气装置的能源使用

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摘要

In the preceding paper, it was found that energy efficiencies in the preparatory drying of raw garlic bulb were inferior to other agricultural products containing low moisture such as cereal grains. This is because the time required to reduce themoisture to safe storage level was too long as a result of its low drying rate. In the present paper partial recirculation of exhaust air was adapted to improve energy efficiency. The experiments were designed with 38, 51, and 77% of exhaust air volumerecirculated and with non recirculation set as the control. The results showed that the proportion of recirculated heat to the total amount of incoming heat quantity was only 0.1% at a recirculation of 38%, but increased to 9.9% and 15.1% at therecirculation level of 51% and 77%, respectively. Energy efficiency, expressed as the total amount of fuel and electricity consumed required to remove 1kg of moisture from raw garlic bulbs, was 54.6MJ/kg at a recirculation of 77% or a reduction of 71.4%when compared with 190.7MJ/kg in non-recirculation. Thermal efficiency in a drying chamber was also increased by 6.6 times from 2.3% in non - recirculation to 15.2% in recirculation of 77%.
机译：在前面的纸张中，发现原始大蒜灯泡的预备干燥中的能量效率不如含有低水分的其他农产品，如谷物。这是因为由于其较低的干燥速率，减少对安全储存水平的时间太长。在本文的本文中，对排气的部分再循环适于提高能量效率。实验设计有38,51和77％的排气量体积，并且具有作为对照的非再循环。结果表明，再循环热量的再循环热量的比例仅为38％的再循环量为0.1％，但其分别以51％和77％的循环水平增加至9.9％和15.1％。表达为从生蒜灯泡中除去1kg水分所需的燃料和电力总量的能量效率为54.6mJ / kg，再循环为77％或减少71.4％，与190.7mj / kg相比 - 分析。干燥室中的热效率也增加了6.6倍，在非再循环中的2.3％升高至15.2％，再循环为77％。

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