McMurdo's power station - heat exchanger
McMurdo Station - Antarctica

McMurdo's power station. The heat exchangers tap into the generator coolant systems to recover waste heat, transferring the heat to a glycol solution which is pumped to other buildings at McMurdo, where other heat exchangers take the heat from the glycol and heat the buildings. These other buildings have additional furnaces as well.

Waste heat in the form of glycol leaves at 190 F, and returns at 178 F - a 12 F drop.

The new generators in the water plant (as yet unused) also have heat exchangers to capture heat from the exhaust, but the older system does not have that.