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从以上五讲的阐述中,我们可以看到,太阳能干燥是一个相当复杂的物理过程,迄今为止,还不能用数学模拟的方法来描述每一个太阳能干燥过程。但是,在漫长的生产实践中,人类利用太阳能进行各种不同物品的干燥,却积累了丰富的经验,我们的任务就是承前启后,促进太阳能利用事业的发展。从世界范围来说,近二十年来,各类太阳能干燥器和干燥系统在迅速发展,据1968年的统计:世界各国应用太阳能干燥的农业产品数量达255×10~3吨(注),其中单是澳大利亚就超过72×10~3吨,为过去三十年的总和。
From the elaboration of the above five lectures, we can see that solar drying is a rather complicated physical process. So far, it has not been possible to describe every solar drying process by mathematical simulation. However, in the long production practice, human use of solar energy for drying a variety of different things, but has accumulated rich experience, our task is to make the past and promote the development of solar energy utilization. From the perspective of the world, various types of solar desiccators and drying systems have been developing rapidly over the past two decades. According to the statistics of 1968, the number of agricultural products using solar drying in various countries in the world amounts to 255 × 10-3 tons (Note) Australia alone is more than 72 × 10 ~ 3 tons, the sum of the past three decades.