FUNDAMENTALS OF THERMODYNAMICS
10th Edition
ISBN: 9781119634928
Author: Borgnakke
Publisher: WILEY
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A turbine receives steam at 10 MPa, 6000C and exhaust it at 0.2 MPa. (a) for the ideal Rankine engine, determine the work, steam rate, thermal efficiency, and means effective pressure. (b) for the actual engine,the brake engine efficiency is 84%; the driven generator efficiency is 93% and the rated output of the generator is 30 MW. Estimate the enthalpy ang quality (or temperature) of the exhaust..Compute the combined work, combined heat rate, and the total throttle flow for the rated power.
Don't answer the given problem, just give me the schematic diagram andT-S diagram of the given problem
A 5 m3rigid tank has propane at 500 kPa, 700 K and connected by a valve to another tank of 0.7 m3with propane at 350 kPa, 600 K. The valve is opened and the two tanks come to a uniform state at 350 K. What is the final pressure?For propane R = 0.1886 kJ/kgK
Steam is admitted in a Rankine engine at 3280 kpa, 500 °C and is exhausted at 328 kpa (saturated). Determine the efficiency cycle and engine.
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- Pls. refer to the answer keys so that I will know if my solution is wrong.arrow_forwardSU-2 A gas at 500K is in a cylinder with a frictionless piston. The gas goes thru a reversible cycle during which it absorbs 400J from a reservoir at 500K. During part of the cycle the gas rejects heat Q to a reseroir at 300K. Let the system be defined as the gas. a) What is the change in entropy for the system for one cycle of operation of the engine? Briefly explain your answer. b) Find the change in entropy for the universe for one cycle of operation of the engine. Briefly explain your answer. c) Find the change in entropy for the surroundings for one cycle of operation of the engine. Briefly explain your answer. d) Use your results from the previous parts to find how many joules of heat were rejected to the 300K reservoir during this process.arrow_forwardSketch and label the nozzle. Sketch and label the process on a P-v diagram, also mention all numbers on the process of P-V diagram please. 7.15 The exit nozzle in a jet engine receives air at 1200 K, 150 kPa with negligible kinetic energy. The exit pressure is 80 kPa, and the process is reversible and adiabatic. Use constant specific heat at 300 K to find the exit velocity.arrow_forward
- 2.A steam throttling valve with inlet conditions of 3MPA and 500C is connected to the inlet of the turbine. The turbine has 800kW power output and heat absorbed of 500kw. If the mass flow rate is 1kg/s and the exit temperature of steam is 400C, find the exit turbine pressure. (arrow_forwardFind the efficiency of a diesel cycle with an explosion energy of 3000 J/mol. Air is introduced into the cylinder at 1 bar, 25C, and compressed to 5 bar. The air is assumed to be an ideal gas and is constant at Cp=7/2Rarrow_forward7.134E R-134a at 90 F, 125 psia is throttled in a steady flow to a lower pressure, so it comes out at 10 F. What is the specific entropy generation?arrow_forward
- We need a steam turbine is to generate 10 MW of power. The feed steam is 200 bar at 500 C. The exhaust is a saturated mixture at 1 bar at 110 C. Calculate the flow rate of steam required.arrow_forwardAir enters an insulated compressor at ambient conditions, 100 kPa, 20 oC at the rate of 0.2 kg/s and exits at 500 K. The isentropic efficiency of the compressor is 70%. What is the exit pressure? How much power is required to drive the compressor? Assume specific heats at room temperatures.arrow_forwardThe efficiency of Carnot cycle operating at a maximum temperature of 460 oF is 50 %. Find the minimum temperature of the cycle.arrow_forward
- please help me answer this question with complete solution, cancellation of units, and figure. i promise to give high rating, thank you very much.arrow_forwardIf air enters the adiabatic turbine at 227 degree C and 1500kpa. Final pressure would reach 100kpa, and efficiency of turbine at 85%. What is final temperature and final work? Cv is 0.719kJ/kg.K, cp is 1.007kj/kg.k. Pls sketch two processes of T-S diagramarrow_forwardExample 8.5. Heat flows from a hot reservoir at 800 K to another reservoir at 250 K. H entropy change of the overall process is 4.25 kJ/K, make calculations for the heat flowinger of the high temperature reservoir.arrow_forward
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