Yes, long-term low load operation of 600kw diesel generator set will be harmful. The harm is mainly reflected in the following aspects:
1. If the load is too low, the piston. and the generator cylinder liner gasket will be damaged. Not good, the engine oil will leak and enter the combustion chamber for combustion, causing the exhaust to emit blue smoke and pollute the air.
2. For turbocharged diesel engines, due to low load and no load, the engine boost pressure is low. It is easy to decrease the sealing effect of the compressor oil seal (non-contact type), and the oil will escape into the boost chamber and enter the cylinder with the intake air, shortening thus the lifespan of the generator.
3. The charge is too small, and some of the oil rising to the cylinder participates in combustion, and some of the oil cannot be completely burned, forming carbon deposits on the valves, intake passages, piston tops, piston rings, etc., and some It will be discharged with the gases 'exhaust. In this way, engine oil will gradually accumulate in the exhaust passage of the cylinder liner, which will also form carbon deposits and reduce the power of the generator set.
4. If the overload is too small, the oil in the generator compressor boost chamber will accumulate to a certain extent and leak from the compressor seal surface.
References:
The method of calculating the fuel consumption of a 600 kilowatt generator: one liter of diesel is approximately 0.84-0.86 kg (1L=0.8-0.85KG). Most parameters used by diesel generator manufacturers utThey read G/KW.H, which means how many grams (G) of oil the generator consumes per kilowatt per hour. Then change the unit to liters (L) to find out how many grams (G). ) of oil consumed by the generator per hour. Fuel consumption costs.
If the actual power consumption is small, you can choose a unit with appropriate power, calculate it according to the specific work, and then select a unit with appropriate power.