A steam power plant operates on a Rankine cycle The steam enters the turbine at 15000 kPa and 600°C. t is condensed in the condenser at 10 kPa. The isentropic efficiencies of the pump and turbine are 95% and 94% respectively. Determine the following a Work input to the pump in (k/kg) b. Heat added in the boler in /kg) Properties: h 19183 Kg vỊ - 0.00101 mng hg 3582.3 kg, xa0.804 h 42392.k kg c Work output from turbine in (/ng) d. Thermal efficiency of the cycle (

A steam power plant operates on a Rankine cycle The steam enters the turbine at 15000 kPa and 600°C. t is condensed in the condenser at 10 kPa. The isentropic efficiencies of the pump and turbine are 95% and 94% respectively. Determine the following a Work input to the pump in (k/kg) b. Heat added in the boler in /kg) Properties: h 19183 Kg vỊ - 0.00101 mng hg 3582.3 kg, xa0.804 h 42392.k kg c Work output from turbine in (/ng) d. Thermal efficiency of the cycle (

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A steam Rankine cycle operates between the pressure limits of 1500 psia in the boiler and 3 psia in the condenser. The turbine inlet temperature is 800°F. The turbine isentropic efficiency is 90 percent, the pump losses are negligible, and the cycle is sized to produce 2500 kW of power. How much error is caused in the thermal efficiency if the power required by the pump were completely neglected? Use steam tables. The error caused in the thermal efficiency if the power required by the pump was completely neglected is %.
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Hi, I need help with this practice problem for Thermodynamics
The evaporator (a heat exchanger) in an A/C unit has R-410A entering at -20 °C and a quality of 30% and leaves at the same temperature and a quality of 100%. The COP of the air conditioner is known to be 1.3 and the mass flow rate is given as 0.013 kg/s. Find the power input to the cycle. (Note that, here, the evaporator is the part of the A/C unit that accepts [i.e., withdraws] heat from the room maintained at a cold temperature)