13. What is the purpose of the GE LM2500 gas turbine enclosure heater?

The enclosure heater maintains fuel viscosity during periods when the gas turbine is secured, ensuring reliable restart and operation. Fuel viscosity increases with decreasing temperature, potentially hindering atomization and combustion. The heater prevents this by maintaining a minimum ambient temperature within the enclosure, keeping fuel and lubricating oil at suitable viscosities. This is the primary design purpose, distinct from inlet air heating, personnel comfort, or maintaining a fixed temperature.