Differences between Gas and Diesel Generators

01 Feb.,2024

 

mbrooke said: Does anyone know the size difference, weight and other noteworthy factors between natural has and diesel standby sets?

I'm looking at some natural gas generators and the 500kw units appear to be just as big (if not bigger) as the 1,250kw diesel unitsDoes anyone know the size difference, weight and other noteworthy factors between natural has and diesel standby sets?

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At a large hospital/ research center that I retired from they had 4 natural gas gens rated @760KW and only running at 1200 RPM due to summer peak saving use and 14 diesel generators most rated @ 2000 KW & running at 1800 RPM. The 4 Cat gas gens gave more trouble then then the 14 Cat diesel gens combined. The 760 KW Natural gas gens had a lot of problems especially in hot weather when we had to run load banks at 750 KW for a hour even after spending a millon dollars to rebuild them along with new controls. Was told by an old timer to never try to run a natural gas generator at more then 90% of rated load. Had a 800 KW natural gas gen in a new office building that had major problems with voltage regulation with only 10 to 20% of rated load.ATS swiches would not transfer back to normal piwer after 30 mintue test cycle.

At a large hospital/ research center that I retired from they had 4 natural gas gens rated @760KW and only running at 1200 RPM due to summer peak saving use and 14 diesel generators most rated @ 2000 KW & running at 1800 RPM. The 4 Cat gas gens gave more trouble then then the 14 Cat diesel gens combined. The 760 KW Natural gas gens had a lot of problems especially in hot weather when we had to run load banks at 750 KW for a hour even after spending a millon dollars to rebuild them along with new controls. Was told by an old timer to never try to run a natural gas generator at more then 90% of rated load. Had a 800 KW natural gas gen in a new office building that had major problems with voltage regulation with only 10 to 20% of rated load.ATS swiches would not transfer back to normal piwer after 30 mintue test cycle.

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