A heat engine operates by receiving heat from a high-temperature reservoir at900 K with a heat input rate of 600 kJ/s. It exhausts waste heat to a lower-temperature reservoir at 350 K. The engine's measured power output is 250kW, and the surrounding temperature is 20°C. (a) Sketch a schematic diagramto represent the question. Calculate (b) the maximum possible poweroutput(c) the rate of energy lost due to irreversibilitiesand (d) the second-law efficiency of the heat engine"

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A heat engine operates by receiving heat from a high-temp 900 K with a heat input rate of 600 kJ/s. It exhausts wast temperature reservoir at 350 K. The engine's measured po kW, and the surrounding temperature is 20°C. (a) Sketch a to represent the question . Calculate (b) the maxim

A heat engine operates by receiving heat from a high-temp 900 K with a heat input rate of 600 kJ/s. It exhausts wast temperature reservoir at 350 K. The engine's measured po kW, and the surrounding temperature is 20°C. (a) Sketch a to represent the question . Calculate (b) the maxim

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter8: Natural Convection

Section: Chapter Questions

Problem 8.46P

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Question

A heat engine operates by receiving heat from a high-temperature reservoir at
900 K with a heat input rate of 600 kJ/s. It exhausts waste heat to a lower-
temperature reservoir at 350 K. The engine's measured power output is 250
kW, and the surrounding temperature is 20°C. (a) Sketch a schematic diagram
to represent the question
. Calculate (b) the maximum possible power
output
(c) the rate of energy lost due to irreversibilities
and (d) the second-law efficiency of the heat engine
"

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Step 1: Write the given data with suitable variables-

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Step 2: (A)-Draw the schematic diagram for the system.

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Step 3: (B)-Find the maximum power output.

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Step 4: (C)- find the rate of exergy loss-

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Step 5: (D)-Find the second law efficiency-

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