Gas Turbine Lube Oil Cooling System

The turbine oil is cooled directly in the air heat exchanger.

Gas turbine lube oil cooling system.

With the compact and reliable construction alfa laval finned coil air heat exchangers ensures optimal heat transfer of the turbine lube oil. Common oils used in these machines have a viscosity of 32 centistokes cst. Some applications use synthetic lubricating oil due to its fire resistant property. The system assists in dissipating or settling contaminants providing for temperature fluctuations and storing oil.

In turbomachinery they are important for hydrodynamic bearing performance. However their waste energy is split between the exhaust lube oil system and jacket cooling system. Gas turbine combined lube and control oil in gas turbine power plants lubrication of the bearings on the turbine shaft main roller journal thrust bearings keeps the turbine running at its optimum. Lube oil systems provide lubrication and cooling to gas turbines and other industrial equipment.

Approximately 48 of the waste heat is in the exhaust stream 27 removed by the lube oil system and 25 removed by the jacket cooling system. Lube oil cooler performance is impacted by a number of plant specific variables. The lubrication system usually consists of a large storage tank coolers to remove heat from the oil and pumps to circulate the oil. Reciprocating engines like gas turbines run at efficiencies near 30.