- Jun 28, 2017 -
1. Closed cooling tower is a deformation and development of traditional cooling tower. It is actually a combination of evaporative cooling towers, coolers and wet cooling towers, which are horizontal evaporative cooling towers where process fluids flow through the tubes and air flows outside the tubes, both of which do not touch each other. The water in the bottom of the tank is pumped by the circulation pump and is sprayed evenly out of the pipe. And the process of fluid hot water or refrigerant and outside the air is not in contact with a closed cooling tower, through the spray water to enhance the effect of heat transfer.
2. Closed cooling towers are suitable for a wide range of cooling systems requiring high circulating water quality and have prospects for applications in power, chemicals, steel, food and many industrial sectors. On the other hand, compared with the air-cooled heat exchanger, the evaporative cooling tower utilizes the latent heat of vaporization of the lower water of the tube, so that the heat transfer and mass transfer of the air side is remarkably enhanced.
Closed cooling tower (also known as evaporative air cooler) will tube heat exchanger placed in the tower, through the circulation of air, spray water and circulating water heat exchange to ensure the cooling effect. Because it is closed cycle, which can ensure that the water quality is not contaminated, a good protection of the main equipment of the efficient operation and improve the service life. When the outside temperature is low, you can stop the spray water system, play a water-saving effect. In recent years, the closed cooling tower has been widely used in iron and steel metallurgy, power electronics, mechanical processing, air conditioning systems and other industries have been widely used in the implementation of national energy conservation and emission reduction policies and the increasing scarcity of water resources. The winter temperatures in the northern region are usually below zero, and the operation of the enclosed cooling tower is becoming increasingly prominent. If the solution is not good, it may freeze the other parts of the heat transfer tube or cooling tower. According to the characteristics of different processes, closed cooling tower all the winter run all day, some part of the time to run, and some almost no use. But need to consider the issue of antifreeze.
If the closed cooling tower does not need to be run in winter, the spray water and the internal circulating water shall be drained during shutdown.
Closed cooling tower, also known as closed cooling tower, evaporative cooler.