Gas Turbines are efficient and compact power generators, but in hot climates or during warm seasons they normally lose much of their power output.
By cooling the inlet air, you can increase the power output substantially. Chilled air is denser and increases the gas turbines output and efficiency. One degree Celsius can give 1.2 % higher efficiency from the turbine. On an LM2500 machine, you can get in the range of 10-15% increased shaft power, when cooling T2 by 10°C depending on the humidity.
Inlet chilling vs. evaporative cooling
There are two ways to secure inlet cooling – Inlet chilling or evaporative cooling. At Halvorsen we specialize in inlet chilling, but can also deliver evaporative cooling.
An evaporative cooler is cheaper to install, but also requires demineralized water and RO systems. In addition, the effect of evaporative cooling is negligible in areas of high relative humidity.
An inlet chiller on the other hand is a more advanced installation, but can give a much higher increase in shaft power because the inlet air is substantially cooler.
More power, less emissions
The Air Inlet cooling is an economically sound product with a short payback time.
Inlet chilling is a good solution when there is need of additional power to increase oil and gas export capacity. The added power provided by the inlet chiller is possible to translate into increased earnings. With inlet chilling you can transform 4 LM2500 machines to give the power of 4.5 machines. In addition, it is both easier, faster and cheaper to install an inlet chiller than installing an additional turbine machine.
The fuel consumption of 5 LM2500 producing 120MW compared to 4 LM2500 with inlet chiller producing 120MW corresponds to fuel savings in the order of 8-12% and thus a similar gain in reduced CO2 and NOX emissions.
- Improves Gas Turbine power.
- Improved Power:fuel ratio.
- Designed for installation on existing Turbine installations.
- Reduced carbon emissions.
- Fast project delivery and easy installation.
- Limited down time for field installation.
LM1600, LM2500, LM2500+, PGT25, LM2500HSPT+, LM6000.
Depending on environmental conditions.
Tailor made for each application.
LM2500: In the range of 10-15% increased shaft power, when cooling T2 by 10°C.
20-25% of increased power with water cooling. 25-40% with air cooling.
Reduced fuel consumption.