Fundamentals Of Thermodynamics
10th Edition
ISBN: 9781119494966
Author: Borgnakke, C. (claus), Sonntag, Richard Edwin, Author.
Publisher: Wiley,
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Chapter 9, Problem 9.33P
A steam power plant has a boiler exit at 5 MPa, 400°C. The condenser operates at 60°C and there is one open FWH at 800kpa. Find the turbine work per unit mass running through the boiler.
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Fundamentals Of Thermodynamics
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- In a Rankine cycle, steam leaves the boiler and enters the turbine at 4 MPa, 400C. The condenser pressure is 10 kPa. What is the pump work in kJ/kg?arrow_forwardIn a steam power plant that uses reheat cycle steam at 15.5 MPa, 545 °C enters the engine and expands to 1.95 MPa. At this point the steam is withdrawn and passes through a reheater. It reenters the engine at 535 °C. Expansions now occur to the condenser pressure of 0.0035 MPa. Find the efficiency in %.arrow_forwardA steam power plant has a steam generator exit at 4 MPa, 600 ℃ and a condenser exit temperature of 45 ℃. Assume all components are ideal and find the cycle efficiency and the specific work and heat transfer in the components, (wt, wc, qh, ql, ηth=?).arrow_forward
- 2. An ideal turbine with one stage of reheat receives steam at 8 MPa, 500°C. Reheat pressure is 0.8 MPa and exhaust pressure is 0.005 MPa. The work is 1,560 and the kg thermal efficiency is 82%. Find the temperature of the steam leaving the reheater.arrow_forwardSteam at 6.2 MPa and 480°C is received by a regenerative engine. Extractions for feedwaterheating occurs at 3 MPa and again at. 1.4 MPa,with the remaining steam expanding to0.0065 MPa. For the ideal engine with a throttla flow of 54,500 kg/h, find the hourlyquantities of steam ex-tracted, the turbine work in kW, and the thermal efficiency. For an ideal cycle through the same states, calculate Q and e。arrow_forward10 0.9967. Ans. H.W 2 A smaller power plant produces steam at 3 MPa, 600 C, in the boiler. It keeps the condenser at 45 C by the transfer of 10MW out as heat transfer. The first turbine section expands to 500 kPa, and then flow is reheated followed by the expansion in the low-pressure turbine. Find the reheat temperature so that the turbine output is saturated vapor. For this reheat, find the total turbine power output and the boiler heat transfer. Answer. (Reheat temperature= 529°C , total turbine power output= 6487 kW, the boiler heat transfer= 16 475 kW)arrow_forward
- An ideal reheat turbine with one stage of reheat receives steam at 8.0 MPa, 480 ̊C.Reheat pressure is 0.83 MPa and exhaust pressure is 0.007 MPa. The work is 1559kJ/kg and the thermal efficiency is 41.05%. Find the temperature of steam leaving thereheater.arrow_forwardН.W A smaller power plant produces steam at 3 MPa, 600•C, in the boiler. It keeps the condenser at 45 C by the transfer of 10MW out as heat transfer. The first turbine section expands to 500 kPa, and then flow is reheated followed by the expansion in the low-pressure turbine. Find the reheat temperature so that the turbine output is saturated vapor. For this reheat, find the total turbine power output and the boiler heat transfer. [Answer. (Reheat temperature= 529°C , total turbine power output= 6487 kW, the boiler heat transfer= 16 475 kW)]arrow_forwardAn ideal reheat turbine with one stage of reheat recieves steam at 8.0 Mpa,500°c.Reheat pressure is 0.83 Mpa and exhaust pressure is 0.007 mpa. The work is 1559kj/kg and the thermal efficiency is 41.05%.Find the temperature of steam leaving the heater.arrow_forward
- An ideal reheat turbine with one stage of reheat receives steam at 8.0 MPa, 480 o C. Reheatpressure is 0.83 MPa and exhaust pressure is 0.007 MPa. The work is 1559 kJ/kg and the thermalefficiency is 41.05%. Find the temperature of steam leaving the reheater.arrow_forwardCogeneration is often used where a steam supply is needed for industrial process energy. Assume a supply of 5 kg/s steam at 0.5 MPa is needed. Rather than generating this from a pump and boiler, the setup in below. is used so the supply is extracted from the high-pressure turbine. Find the power the turbine now cogenerates in this process. 2 3 HP LParrow_forwardSteam is supplied to a turbine at 600 psia with 200 F superheated and exhausts to the condenser at 0.7 psia . Assume the process to be isentropic and use the steam table to find : a.) The entropy and enthalpy at inlet. b.) The enthalpy and moisture content at exhaust.arrow_forward
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