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How to Select Appropriate Diesel Generators for Use in Plateau Areas

Aug. 15, 2023

Diesel generator sets play an important role in China's economic construction and national defense construction, and are widely used in mining area, transportation, construction, farmland, water conservancy and other engineering construction departments in plateau areas. However, the ordinary diesel generator sets produced in China are only applicable to the altitude below 1000m. Affected by the special environmental conditions in plateau, the power of the prime mover of diesel generator used in plateau decreases, the fuel consumption increases, and the heat load increases, it has great influence on the unit power and main electrical parameters. How should users choose the appropriate generator to ensure normal use in plateau areas?

Cummins power generator set

Due to the low air pressure, thin air and relatively low oxygen content in plateau areas, especially for naturally aspirated diesel engines (considering the tendency of ignition delay in plateau conditions, in order to improve the operating economy of diesel engines, it is generally recommended that naturally aspirated diesel engines supply fuel in advance), due to insufficient air intake and poor combustion conditions, the diesel engines cannot emit the original calibration power. Even if the basic structure of diesel engines is the same, the calibration power of various diesel engines is different, so their ability to work on plateau is also different. As the altitude increases, power decreases, and exhaust temperature increases, users should also consider the plateau working capacity of diesel engines when selecting diesel engines to strictly avoid overload operation.

As the height of the diesel engine increases, the power performance decreases and the exhaust temperature increases, users should also consider the ability of the diesel engine to work at heights to avoid overloading. According to the previous test results, it is proved that the exhaust supercharging method can be used for power compensation of diesel engines in plateau areas. Exhaust gas turbocharging can not only make up for the lack of power in the plateau, but also improve the smoke color, restore power and reduce fuel consumption.

With the increase of altitude, the ambient temperature is lower than that in plain areas. When the ambient temperature rises by 1000 m, the ambient temperature drops by about 0.6℃. Because of the thin air in the plateau, the starting performance of the diesel engine is worse than that in the plain area. When using, the user shall take auxiliary starting measures corresponding to low temperature starting.

As the height increases, the boiling point of water decreases, the air pressure and quality of cooling air decrease, and the heat dissipation per kilowatt in unit time increases, making the cooling condition of the cooling system worse than that of the plain. In general, the open cooling cycle is not applicable to high altitude areas. When using at high altitude, a closed cooling system can be used to increase the boiling point of the coolant.

The performance requirements of diesel generator sets used in plateau areas are different from those used in plain areas. Users must select appropriate diesel generator according to the local environmental characteristics. If you do not know how to choose, it is recommended that you directly consult professional generator manufacturers to select for you. Guangxi Dingbo is a manufacturer of professional generators, diesel generator sets, Cummins generator sets, Volvo generator sets, etc, We can provide you with professional diesel generator set solutions. Welcome to consult us, email sales@dieselgeneratortech.com.

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