What are the methods of making ice in cold storage? What are their characteristics?

According to the size and shape of ice, the mechanical ice-making methods in the ice-making workshop of cold storage can be divided into barrel ice and crushed ice (flake ice, snow ice, tube ice, etc.). ). Because of its small size, crushed ice is easy to melt and stick when stored, so it is suitable for matching with the system and suitable for general fishing boats, ocean-going ships and commercial outlets. Barrel ice is the most widely used ice in cold storage in China because of its large volume, firm ice quality, difficult melting and easy handling.

According to different ice-making equipment, it can be divided into salt water ice-making (indirect cooling) and rapid ice-making (direct cooling). The characteristics of the two ice making methods are shown in Table 5-9.

Compare the project equipment weight, floor space, civil construction cost, corrosive salt consumption of lifting equipment, starting time of freezing cycle, 15t/ day barrel-type rapid ice-making equipment, about 9t23m2, cheap, unnecessary, not exceeding 1.8h, not exceeding 2.5h, 15t/ day/kloc-. Need frequent maintenance. 15t/ day brine ice-making equipment is difficult to adjust. The temperature of block ice is-1.5℃, and the ice is solid and melts slowly. Simple operation. Due to the corrosion of salt water, the ice-making pool and ice bucket need frequent maintenance.

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Table 5-9 Comparison of Characteristics between Quick Ice Making and Salt Water Ice Making