Combining waste-to-energy steam cycle with gas turbine units

Numerical results for a representative WTE plant integrated with different GT commercial units are shown and discussed. The carried out analysis shows that combining WTE and GTs provides power output increase up to 80% and a steam turbine mass flow increase up to 50%, compared to a mid-size reference WTE with efficiency of 27%. A First Law Efficiency increase in the range of 8-15% points can occur, depending on the GT model and layout selection. Results of the study suggest issues and useful guidelines to: (i) create new advanced WTE-GT integrated power plants or to (ii) repower existing low-performing WTE power plants, in order to increase waste conversion into energy.