Page 212 - Engine IQflip'21

Comparison of Technology

Investment costs Mechanical efficiency Service and maintenance costs

Gas engine 100% Gas engine 45% Gas engine 100%

Gas turbine 150% Gas turbine 33% Gas turbine 80%

Diesel engine 70% Diesel engine 48% Diesel engine 120%

0% 50% 100% 150% 200% 0% 20% 40% 60% 0% 50% 100% 150%

Life time (major overhaul) Fuel Heat recovery – Cogeneration

• Gas Engines can be operated with different
fuel gases (natural gas/non-natural gas) • The recoverable heat of gas engines can
Gas engine 60 000
on a low gas pre-pressure. be
used flexible for the production of , cold,
• Gas Turbines require a high gas pressure steam and hot air for drying.
(15–20 bar) and a very clean gas.
Gas turbine 60 000 • The clean gas engine exhaust gas can be
• Diesel-Oil is in most countries more used for CO -fertilization in greenhouses.
expensive than natural gas. 2

Diesel engine 20 000 • The worldwide resources of Natural Gas • Soot in the exhaust gas of diesel engines
make a heat recovery difficult.
are bigger than the resources of oil.
- 20 000 40 000 60 000 80 000 • Natural gas is the fossil energy of the future!

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