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一、引言贮存在大型筒仓中的粮食损失主要是由于昆虫(谷物的象虫、蛾虫)的活动所致。为了预防昆虫的活动和阻止昆虫的迅速繁殖,应该降低谷物的温度。对于长期贮存的谷物,温度应低于+10℃,对短期贮存的谷物,温度则为+17℃。在高度为42米,每个隔仓容量达1000吨的捷式混凝土筒仓中贮存谷物的降温是利用冷空气通风系统来实现的。为了能采用在仓库或在不高的筒仓中对谷物贮存已研究过的制冷
I. INTRODUCTION The loss of foodstuffs stored in large silos is mainly due to the activity of insects (elephants and moths of cereals). In order to prevent insect activity and prevent the rapid multiplication of insects, the temperature of the grain should be lowered. For long-term storage of grain, the temperature should be below +10 ℃, for short-term storage of grain, the temperature is +17 ℃. The cooling of stored grains in a Czech concrete silo with a height of 42 meters and a capacity of 1,000 tons for each compartment is achieved by means of a cold air ventilation system. In order to be able to adopt the refrigeration that has been studied for grain storage in warehouses or in less-than-silos