Why do Diesel Generator Set Need to be Equipped with Water Jacket Heater

Nowadays, many diesel generator sets are equipped with automation configurations, which means that after a power outage, the genset can automatically start, and after a power call, the genset can automatically stop. The control screen with a preheating button can control the engine to start heating and work to achieve preheating purposes. If the temperature is low in winter, it will be difficult to start the generator set because the antifreeze in the water tank and the oil in the engine block are at a low temperature, and the intake air temperature in the cylinder is low. After the piston compresses the gas, it is difficult to reach the diesel combustion temperature, and the generator set cannot be started. One way to solve this problem is for the generator manufacturer Dingbo Power to recommend installing a water jacket heater, Next, Dingbo Power will introduce you to the function of water jacket heaters and some related knowledge.

1.The function of the water jacket heater

Diesel generators need to generate a large amount of heat during operation, including thermal energy generated by combustion and frictional heat generated by mechanical motion. If these heat cannot be dissipated in a timely manner, it will cause the generator to overheat, leading to malfunctions. The water jacket heater is designed to solve this problem. It heats the engine cooling water to absorb the heat generated by the engine during the cycle, thereby maintaining the engine operating temperature within a suitable range and dissipating excess heat into the surrounding environment.

The diesel generator with a water jacket heater keeps the engine at a certain temperature, preventing it from freezing and cracking in winter, and enabling the diesel engine to start quickly even in severe cold and low temperature conditions. The water jacket heater keeps the water temperature of the genset's water jacket within the set temperature range (about 35 ℃). Due to the indirect heating of lubricating oil through heat transfer, condensation is avoided, and the diesel generator set is in a hot standby state. This allows the diesel generator set to start up at any time, whether in severe winter or last month, and load to full load in the shortest possible time. Reduced mechanical wear of diesel generators, resulting in stable output power.

2.Selection of water jacket heaters

When selecting a jacket heater, the following factors need to be considered:

Heating power: The higher the heating power, the better the heating effect, but excessive power can also lead to an increase in energy consumption.

Heating method: Different heating methods are suitable for different working environments and need to be selected according to specific circumstances.

Material: The material of the water jacket heater needs to have good corrosion resistance and high temperature resistance to ensure its long-term stable operation.

Installation method: The installation method of the water jacket heater needs to be compatible with the structure of the diesel generator to ensure firm installation and tight connection.

3.Maintenance of water jacket heater

As an important component of diesel generators, water jacket heaters require regular maintenance and upkeep to ensure their normal operation. The specific maintenance content includes:

Regular cleaning: Clean the scale and dirt inside the water jacket heater to ensure smooth water flow.

Regular replacement of heating medium: The heating medium needs to be replaced regularly to ensure its heating effect and stability.

Regular inspection: Regularly inspect the pipelines, valves, connectors and other components of the water jacket heater to ensure that they are intact and undamaged.

Anticorrosive coating: Apply anti-corrosion coating treatment to the water jacket heater to extend its service life.

Dingbo Power hopes that the above knowledge will be helpful to you. If you would like to learn more about diesel generators, please feel free to contact us via email dingbo@dieselgeneratortech.com .