传导干燥与对流干燥的能耗与成本对比分析

Contrastive analysis of energy consumption and cost of indirect and direct drying

干燥作业是各行业中能耗较大的处理方法之一,我国干燥能耗约占全部工业能耗的12%。传导干燥比对流干燥节能20%—50%,但传导设备往往耗用金属材料较多,结构较复杂,主机造价较高,用户有时会因不能综合分析对比,只因主机投资较大,放弃节能产品的选用。文中利用通用的Excel程序,建立了一种定量的能耗及干燥成本综合对比分析方法,可方便迅速地对不同干燥方法定量比较,给出节能对投资的回报率,从而优选出节能干燥设备,对推动节能产品的应用、降低干燥成本具有重要意义。

As a high-energy-consumption treatment process, drying operation accounts for 12% of the energy consumption in all industries of China. The indirect drying can save energy 20%-50% compared with the direct drying, however the indirect drying equipment has some shortcomings, such as more metal materials consumed, complicated structure and higher cost of equipment. Without a comprehensive contrast, the customer may abandon the adoption of energy saving product just because of its higher price. A contrastive analysis method for quantificational energy consumption and drying cost was established by using Excel program, which can make a quantificational contrast to different drying methods, so that the energy saving equipment can be selected. It is important for the application of energy saving product and the diminution of drying cost.