Correct your mistake, it's the generator air cooler. Its function is to cool the generator coils. When to turn it on depends on the temperature of your generator. If the temperature is low, they will be lit late. Most of them will be turned on before and after the transfer (I don't know when to turn on, but the theory is probably the same)
Do thermal power plants necessarily have cooling towers? What is the difference between an air cooling system and a water cooling system? Do only air-cooled thermal power plants have cooling towers?
Commonly used cooling methods for turbogenerators are:
(1) Air cooling. It is divided into open air cooling and closed circulation air cooling. So-called open-air cooling consists of the fact that in small geOrdinary generators, the generator fan draws cold air into the engine from the factory building, cools each part, then exhausts it out of the machine. Closed cycle air cooling is used in large and medium sized generators. After the cooling air exits the generator, it is conducted under the machine pit. After being cooled by a set of air coolers, it is driven into the engine by one. fan. This air always circulates inside to keep the machine clean.
(2) Water cooling. Generally, it is internal double water cooling, that is, the conductors of the stator winding and the rotor excitation winding are hollow, the water from Cooling passes inside the conductors and the stator bore is always cooled by air. Although the cooling efficiency is high, the driver's interior is prone toscale and clogging.
(3) Hydrogen cooling. It is divided into two cooling methods: external hydrogen cooling and hydrogen water cooling. External hydrogen cooling is the same as air cooling, except the cooling medium changes from air to hydrogen, but the hydrogen cooler is inside the machine. The difference between water-hydrogen cooling and hydrogen cooling is that the cooling water passes inside the stator winding conductor, and the rest is the same as external hydrogen cooling.
1. Thermal power plants do not necessarily need cooling towers. If they are close to rivers and seas, the cooling water can be discharged directly into the rivers and seas. However, this situation represents a relatively small proportion. and the towerscooling are generally equipped.
2. Generally speaking, the advantages of air coolers compared with water coolers are as follows:
The air side pressure drop of air coolers is about 100 ~ 200 Pa and the operating costs are low
2. The maintenance cost of air cooling system is 20% to 30% of the maintenance cost of water cooling system.
3 . The low corrosiveness of the air requires cleaning measures. .
There is virtually no shortage of water for air and water cooling.
Water cooler features:
Compact structure and smaller cooling area than air cooler<. /p>
2. Sensitive to changes in ambient temperature
General pipes Shell heat exchangers meet the requirements
3.
It's not just thermal power plants who adopt theair cooling and have cooling towers.