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Difference between chiller direct freezing and indirect freezing


There are two principles of refrigeration in the chiller and screw chiller industry. Those in the industry should master the principle of direct refrigeration and indirect refrigeration. Mastering these two principles is very important for learning related industry knowledge. Significance, the principles of direct refrigeration and indirect refrigeration are explained in detail below:

The principle of direct freezing and cooling The water in the bottom basin of the cooling tower is pumped to the condenser of the chiller to cool the condenser, and then flows back to the cooling tower and sprays down. After the water is cooled by the fan on the top of the cooling tower It flows back to the bottom of the cooling tower and runs like this again and again. When the condenser dissipates heat and the refrigerant inside it liquefies, it flows into the evaporator to evaporate, and it absorbs heat during evaporation, so the sulfuric acid (tank solution) in the evaporator is cooled, and the cooled sulfuric acid is transported to the electroplating tank by a water pump. Just such a cyclic process.

Principle of indirect refrigeration (Take the electroplating industry as an example)

The water in the bottom basin of the cooling tower is transported to the condenser of the chiller through a water pump to cool the condenser. When it flows back to the cooling tower and sprays down, the water is cooled by the fan on the top of the cooling tower, and then flows back to the bottom basin of the cooling tower. The condenser dissipates heat while the refrigerant inside it liquefies, and then flows into the evaporator in the water tank to evaporate, and the heat is absorbed during evaporation, so that the water in the water tank is cooled, and the cooled water is transported to the heat exchanger (middle) by the pump. Separation, water on the side, sulfuric acid on the side), and then the sulfuric acid is cooled by the heat transfer process, which is such a cyclic process. The advantage of this product is that it is easy to install, its service life is relatively longer than that of direct freezing, and acid and alkali are not easy to corrode the chiller.

There are many ways to construct the cooling system, and how to match it should be based on the actual production line and the surrounding environment. At the same time, factors such as the cooling temperature index and range required by the machine must be considered. For more industry knowledge, please visit http://ylscps.com



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