Considering Other Vapor Cycle Aspects
A binary vapor power cycle consists of two ideal Rankine cycles with steam and ammonia as the working fluids. In the steam cycle, superheated vapor enters the turbine at 6 MPa, 640°C, and saturated liquid exits the condenser at 60°C. The heat rejected from the steam cycle is provided to the ammonia cycle, producing saturated vapor at 50°C, which enters the ammonia turbine. Saturated liquid leaves the ammonia condenser at 1 MPa. For a net power output of 20 MW from the binary cycle, determine
(a) the power output of the steam and ammonia turbines, respectively, in MW.
(b) the rate of heat addition to the binary cycle, in MW.
(c) the thermal efficiency.
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