The difference between air-cooled generator sets and water-cooled generator sets

Introduction The difference between air-cooled generator sets and water-cooled generator sets is that air-cooled diesel engines are generally low-power, and larger-power ones are generally water-cooled. Air-cooled generator set: use one or more large fans to

The difference between air-cooled generator sets and water-cooled generator sets

Air-cooled diesel engines are generally low-power, and larger-power engines are generally water-cooled.

Air-cooled generator set: Use one or more large fans to force exhaust air to the generator body to dissipate heat.

Water-cooled generator set: The water circulates between the inside and outside of the body, and the heat generated inside the body is taken away through the water tank and fan.

Both functions are to dissipate heat into the air, and there is not much difference in use.

Jiangsu Xingguang Diesel Generator Manufacturer

How to standardize the ventilation of diesel generator rooms

The advantages and disadvantages of water-cooled and air-cooled diesel generator sets are mainly reflected in the main engine .

Water-cooled diesel engines have open cycle and closed cycle. They have good cooling effect, low noise and are widely used. However, the structure is complex, the manufacturing cost is high, it is relatively bulky, it is easy to corrode, it produces scale, blockage, leakage, it loses a lot of heat, it consumes more oil, and it is more troublesome to maintain.

The air-cooled diesel engine has a simple structure, low manufacturing cost, small size, light weight, small heat loss, relatively fuel-efficient, no water leakage, freezing, scaling and other faults, short warm-up time, and environmental adaptability Good performance and easy maintenance. The disadvantages are loud noise, uneven cooling, high heat load, and high fan power consumption.

Diesel generator room ventilation includes two parts, daily ventilation and working ventilation.

Daily ventilation: The number of ventilation in the machine room of air-cooled and water-cooled generators should be 6 times, and the number of ventilation in the oil storage room should be no less than 3 times. For computer rooms that use gas fire extinguishing systems, after a fire, this ventilation system is responsible for removing indoor exhaust gas, but it is not accident ventilation. To ensure people's safety, it is recommended to set the start button for accident ventilation.

Working ventilation: Water-cooled diesel generators must consider the amount of air required for working oxygen consumption; air-cooled generators have a large cooling air volume and generally use natural air intake. Diesel engines have their own fan pressure emissions, but diesel generators The pressure head of the built-in fan is only about 150Pa. When the resistance of the shaft is large, a fan needs to be added to overcome the resistance of the shaft. Generally, if the resistance of the air inlet shaft is large, an air inlet fan is added; if the resistance of the exhaust shaft is large, an exhaust fan is added.

The diesel generator room uses gas fire extinguishing. Solenoid valves should be installed on the air inlet and exhaust channels. When a fire occurs in the diesel generator room and gas fire extinguishing is started, these valves will be closed in a chain to ensure the fire extinguishing effect.

The exhaust of diesel generators is pressurized exhaust with high flue gas temperature and high air flow velocity. The flue gas needs to be discharged at high altitude. The smoke pipe should be thermally insulated and a shock-absorbing hanger should be installed.

Diesel generator rooms must pay attention to ventilation and smoke exhaust, otherwise it will affect the use of the generator and cause damage to the generator. For companies that cannot afford power outages, damage to the generator is a very bad thing. matter.

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