Characteristics of Air Cooled and Water Cooled Diesel Generator Sets

During the operation of a diesel generator set, the heat generated by high-temperature gas and friction will raise the temperature of components such as the cylinder (head), piston, and valve. The cooling system of a diesel generator set is designed to ensure that the unit operates within the most suitable temperature range. Depending on the cooling medium, the cooling system of a diesel generator set can be divided into water-cooled and air-cooled types. For water-cooled diesel generator sets, the suitable temperature in the cylinder wall water jacket is 80-90 ° C, while for air-cooled diesel generator sets, the suitable temperature in the cylinder wall is 160-200 ° C. In order to give you a clearer understanding of these two different cooling methods, this article introduces the characteristics of air-cooled and water-cooled diesel generator sets by Dingbo Power.

Air-cooled generator set

1. The diesel engine is a generator for single cylinder or dual cylinder engines, which uses one to multiple large fans to forcefully exhaust and dissipate heat from the generator body.

2. Generally, gasoline generators and small diesel generators are the main types.

3. The air-cooled generator set needs to be installed in an open cabin with high noise.

4. The air-cooled generator set has a simple structure, low failure rate, good starting performance, requires less air, has low fan power consumption, low fuel consumption, and no risk of freezing or overheating boiling, which is conducive to maintenance.

5. Air cooled generator sets are suitable for high-altitude or water scarce or cold places, without considering issues such as water addition, boiling point, freezing, etc. Due to limitations in thermal and mechanical loads, the power is generally relatively small.

Water cooled generator set

1. Diesel engines are mainly large units such as four cylinder, six cylinder, and twelve cylinder engines. The internal and external water circulation of the engine body takes away the heat generated inside the engine body through the radiator and fan.

2. Water cooled generator sets are more common in large generator sets.

3. The structure of water-cooled generator sets is complex, and the manufacturing difficulty is relatively high. There are many requirements for the environment. When used on high altitudes, it is necessary to consider reducing power consumption and lowering the boiling point of coolant water by adding a certain proportion of additives to improve boiling and freezing points.

4. The water-cooled generator set has ideal cooling effect.

5. Motors with the same technical parameters have smaller volume, lighter weight, higher energy density, and better heat transfer performance due to water cooling.

6. High power generator sets are generally water-cooled generator sets.

The above are the characteristics of air-cooled and water-cooled diesel generator sets organized by Dingbo Power for you. Regardless of the cooling method, the purpose is to maintain the appropriate temperature of the diesel generator set during operation. If there are no appropriate cooling measures during operation, the temperature of the moving parts of the unit will be too high, and the mechanical strength and stiffness of the heated parts will be significantly reduced. The normal clearance between them will also be damaged, which will aggravate wear and increase the failure rate of the unit. Therefore, the role of the cooling system is very important.

As a professional diesel generator manufacturer, we always insist on using first-class talents to build a first-class enterprise, create first-class products, create first-class services, and strive to build a first-class domestic enterprise. If you would like to get more information welcome to contact us via sales@dieselgeneratortech.com.