Actions for Evaluation of a pressurized-fluidized bed combustion (PFBC) combined cycle power plant conceptual design. Annual report, June 30, 1976--June 29, 1977
Based on the results of various trade-off studies performed, a commercial plant cycle arrangement has been selected. This arrangement incorporates a coal fired PFB combustor/gas turbine topping cycle with supplementary firing of the gas turbine exhaust in a coal fired AFB steam cycle having steam throttle conditions of 2400 psig and 1000/sup 0/F with reheat to 1000/sup 0/F. The overall efficiency of this plant is approximately 41 percent (Gross, HHV). Much of the plant and equipment design has been completed. Additional studies were performed to assess the effects on cycle performance of various gas turbine parameters such as pressure ratio, turbine inlet temperature, cooling flows, and pressure losses. Steam cycle parameters such as condenser pressure and pressure losses were also studied. Another major effort under this task involved the conceptual design and economic feasibility study of sorbent regeneration systems.