脱水菜隧道干燥设施的节能设计研究

Improved design of tunnel dry facilities for dehydrating vegetables for increasing thermal efficiency

摘要: 脱水菜企业普遍使用风机顶置逆流隧道式干燥设施，其热效率较低，仅有40%。通过对各生产环节热损失分析后，新设计的风机直对逆流和混流两种隧道干燥设施热效率分别达到58%和68%。文中提供了已做和进一步可做的提高热效率的方法。

Abstract: Top-mounted-fan adverse current tunnel dry facilities are widely used as the common way to dehydrate vegetables. However, its thermal efficiency is only 40%. By the analysis of energy loss on every production chain, two new tunnel dry facilities were designed .One was direct blowing adverse current tunnel dry facilities and the other was mixed flow tunnel dry facilities. Their thermal efficiency can come up to 58% and 68%, respectively. Several ways of raising thermal efficiency were also provided.