The evaporator is used as a major component of the four major components of the refrigeration. The low-temperature condensing "liquid" body passes through the evaporator and exchanges heat with the outside air to "heat" the heat to achieve the cooling effect. Therefore, the advantages of a wide variety of evaporators, easy operation, and the like are widely used in the chemical industry, pharmaceutical, and food industries. So when we produce a chiller, how should we choose the right evaporator?
First, in the production process, the corrosion of ferrous metals is very strong due to salt water, and when it comes into contact with air, the corrosive effect will be more severe, so closed loops should be used. For a volatile refrigerant cycle system, a closed cycle must be used. In both cases, the chiller should use the best choice of the choice of horizontal shell and tube evaporator.
Secondly, the open circulation system for non-volatile refrigerants is suitable for tank immersed evaporators. For the production process of salt water ice pool treatment, closed loop systems cannot be used, so this type of evaporator is the only desirable type. . For chiller refrigeration systems that cool or freeze bagged food in brine and concentrate spray air conditioning, tank immersed evaporators are also preferred.
Third, the choice of cooling pipe and chiller: For the cold storage, most of the chiller is used to increase the cooling temperature. For the freezing room of the small cold storage, the shelf type pipe or wall pipe can be used. tube. For cold storages that need to prevent air drying, the top pipe or wall pipe is usually used. If there is no cold storage problem, the chiller is often used.
Fourth, when the industrial chiller adopts the tank immersed or shell-and-tube evaporator, the working stability of the brine should be about 5 degrees higher than the temperature of the refrigerant evaporator. However, the freezing point of the brine should be higher than the evaporation temperature of the refrigerant. 5-8 degrees lower.
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