Canadian gas plant uses new turbine cooling technique

Operations at a Canadian gas plant found fogging units added to turbines effective in cold climates as well as hot. While this may appear to be an obvious choice for operations in the hot, dry areas of the Southwest US, it also has proven effective at the EnCana Corp., Calgary, Caribou Lake gas plant in Alberta.EnCana is using a refinement of inlet fogging called overspray (or intercooling) that is bringing even greater efficiencies to gas turbines in all types of climates.Heat lossesGas turbines move a constant volume of air, but they depend on the mass of that air for their power. To increase the available mass, turbines have as many as 17 stages that gradually compress the air before i...

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