Abstract
An experiment was conducted by using cylindrical concrete pieces with c-c thermocouples imbedded in it so that the effect of flood rates in the flood-type cooler and of agitating in the immersion-type cooler might be clarified. Also the similar experimental results on some agricultural products were given.
1) In the case of an immersion-type hydrocooler with agitators, the cooling. rate was larger than without agitators.
2) In flood-type cooling of piled agricultural products, the cooling rate of each layer (upper, middle and bottom layer of piled products) was different. The difference might become small by means of larger flood rates. It was supposed that the constant rate of flooding water had an optimul height for each piled product.
3) In the case of leafy vegetables and root vegetables with leaves which had large resistance towater flow, the piled height shoud be less than about 16cm under the experimental conditions
