Enrichment Problems-Chapter 8 PDF

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Enrichment problems and solutions-chapter8 Problem#1 Water is the working fluid in an ideal Rankine cycle. Saturated vapor enters the turbine at 16 MPa, and the condenser pressure is 8 kPa. The mass flow rate of steam entering the turbine is 120 kg/s. Determine (a) the net power developed, in kW. (b) the rate of heat transfer to the steam passing through the boiler, in kW. (c) the thermal efficiency. (d) the mass flow rate of condenser cooling water, in kg/s, if the cooling water undergoes a temperature increase of 18 ℃ negligible pressure change in passing through the condenser.

Problem#2 Water is the working fluid in an ideal Rankine cycle. Steam enters the turbine at 1400 lbf/in2 and 1000°F. The net power output of the cycle is 1 x 109 Btu/hr. Cooling water experiences a temperature increase from 60°F to 76°F, with negligible pressure drop, as it passes through the condenser. Determine a) The mass flow rate of steam, in lb/h b) The rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator c) The thermal efficiency d) The mass flow rate of cooling water, in lb/h...