What cooling methods are available for generators?

Introduction What cooling methods are available for generators? 1. Closed-loop air cooling: For turbogenerators less than 50,000 kilowatts, a closed-loop air cooling system is often used, and the engine fan is used to blow heat.

What cooling methods are available for generators?

1. Closed-loop air cooling

For turbine generators under 50,000 kilowatts, a closed-loop air cooling system is often used and the engine fan is used to blow the heater. components to cool.

2. Hydrogen Cooling

For generators with a capacity of 50,000 to 600,000 kilowatts, hydrogen cooling is widely used. The heat dissipation performance of hydrogen (purity 99%) is better than that of air, and the heat dissipation effect is good. It can significantly reduce the ventilation friction loss of the engine, thereby greatly improving the efficiency of the generator. Explosion-proof and leak-proof measures must be taken when using hydrogen cooling, which makes the engine structure more complex and increases the consumption and cost of electrode materials.

3. Coolingcooling by liquid fluid

The relative cooling capacity of water is 50 times greater than that of air. To remove the same heat, the flow rate of water required is much lower than that of air. air. Therefore, using hollow wires in the coil and passing water through the wires for cooling can significantly reduce the temperature rise of the motor, delay insulation aging, and extend the service life of the motor.

Detailed information

Strictly treated hydrogen for cooling can ensure that the inside of the generator is clean, the ventilation and cooling effect heat dissipation is stable, and there will be no problems caused by dirt.

Hydrogen contains very little oxygen, less than 2%, and does not support combustion. Even if a short circuit fault occurs inside the generator, there is no risk of fire, whichcan significantly reduce the degree of combustion. Damage caused by fault. In hydrogen there is less noise and the insulating materials are less susceptible to oxidation and corona damage.

The hydrogen in the generator must maintain the specified purity to ensure the operating performance of the generator and avoid explosions. For this purpose, a hydrogen supply device must be installed.

References:

Baidu Encyclopedia - Generator

Does the generator need to add water or coolant

Diesel generator coolant replacement:

First time It should be replaced after 200 hours or three months of use, and every 500 hours or one year thereafter, carefully remove the top cover of the water tank, open the drain valve under the water tank and make surethe exit is not blocked. water, flush the cooling system with clean water and close it. Drain the faucet, refill the coolant and cover the top cover. Pay attention to the operation of the device which has just stopped. Do not open the water tank cover within 15 minutes. prevent water vapor from bursting and hurting people.

Add coolant.

Open the water tank cover when the machine is cold and check the liquid level inside the water tank. If the liquid level is lower than the low liquid level warning line marked on the water tank, you should add an appropriate amount of pure liquid to the water tank. In winter, it is necessary to mix and add water proportionally to prevent the water in the water tank and body from freezing and cracking the body and water tank.u. The function of antifreeze is to reduce the freezing temperature of water in the body. water reservoir. Generally, anti-rust liquid is added to the water tank in summer and water in winter. Add antifreeze to the can.

In the water tank, you can add water but the effect is not very good. Adding antifreeze or the like will have a better cooling effect.

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