Problem Statement A Rankine cycle with a closed feedwater heater operates with a steam generator pressure of 140 bar, a condenser pressure of 6 kPa, and extracts 14% of the steam flow at 30 bar. The extracted steam leaves the feedwater heater as a saturated liquid. The steam generator exit is superheated by 200°C. The turbines have an isentropic efficiency of 90% and the pump is isentropic. The condenser exit is a saturated liquid. Determine the thermal efficiency of the cycle. Answer Table Correct Answer Stage Description Your Answer Due Date Grade (%) Part Weight Attempt Action/Message Туре 1 Thermal efficiency (%) Nov 28, 2024 11:59 pm 0.0 1 1/5 Submit * Correct answers will only show after due date has passed.

Problem Statement A Rankine cycle with a closed feedwater heater operates with a steam generator pressure of 140 bar, a condenser pressure of 6 kPa, and extracts 14% of the steam flow at 30 bar. The extracted steam leaves the feedwater heater as a saturated liquid. The steam generator exit is superheated by 200°C. The turbines have an isentropic efficiency of 90% and the pump is isentropic. The condenser exit is a saturated liquid. Determine the thermal efficiency of the cycle. Answer Table Correct Answer Stage Description Your Answer Due Date Grade (%) Part Weight Attempt Action/Message Туре 1 Thermal efficiency (%) Nov 28, 2024 11:59 pm 0.0 1 1/5 Submit * Correct answers will only show after due date has passed.

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter28: Special Refrigeration Applications

Section: Chapter Questions

Problem 15RQ: Why is two-stage compression popular for extra-low-temperature refrigeration systems?

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7
Question # 1 The networkoutput and the thermal efficiency for the Carnot and the simple ideal Rankine cycles with steam as the working fluid are to be calculated and compared. Steam enters the turbine in both cases at 5 MPa as a saturated vapor, and the condenser pressure is 50 kPa. In the Rankine cycle, the condenser exit state is saturated liquid and in the Carnot cycle, the boiler inlet state is saturated liquid. Draw the T-s diagrams for both cycles.
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A ideal rankine power plant cycle uses ammonia as the working fluid.Saturated vapor leaves the boiler at a temperature of 85 o C. The condenser temperatureis 40 o C. Calculate the heat transfer to the boiler, the work done by the turbine, and thethermal efficiency of the cycle.
please provide full calculation