What is the difference in principle between open cooling towers and closed cooling towers?
The cooling principle of the open cooling tower is to spray the circulating water on the glass fiber filler in the form of spray, and then heat exchange is achieved through the contact of water and air, and then the fan drives the air circulation in the tower to bring out the hot air after heat exchange with water, so as to achieve the cooling effect.
From the actual situation, we can find that the cooling method of open cooling tower, even if the initial investment is relatively small, consumes a lot of water and electricity, which means the operating cost is very high.
A closed cooling tower does not require packing during the cooling process, and its main core component is a copper tube surface cooler. Simply put, it is two loop processes, namely the inner loop and the outer loop.
We can briefly introduce the two circulation processes of closed cooling towers as follows:
Internal circulation: Connect with the target device to form a closed circulation system (with soft water as the circulating medium). Cooling the target device by transferring the heat from the target device to the cooling unit.
External circulation: In the cooling tower, it cools down the cooling tower itself. Not in contact with the internal circulating water phase, only through the copper tube surface cooler in the cooling tower for heat exchange and dissipation. Under this cooling method, the operation of the motor is set according to the water temperature through automatic control.
Due to the relatively high ambient temperatures in spring and summer, it is necessary for two cycles of a closed cooling tower to be carried out simultaneously in order to cool down. On the contrary, the temperature in autumn and winter is not too high, and usually, we only need one internal cycle to complete the cooling process.
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Guangdong Trlon Energy-saving Air Conditioning Equipment Co., Ltd.
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