tomobile engine has a thermal efficiency ne surrounding air is at 25 °C. Does the o rmodynamics?

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
icon
Related questions
Question

Second Law of Thermodynamics

Show soln. step by step with correct formula.

ANswer it in 1hr.

Second Law of Thermodynamics
7 1. An automobile engine has a thermal efficiency of 48%. The temperature of the fuel is 350 °C,
and the surrounding air is at 25 °C. Does the operation of this engine Violate the second law
of thermodynamics?
2. An inventor claims to have perfected an engine that will produce energy by absorbing heat
from a fuel at 300 °C and rejecting heat to the surroundings at 15 °C while achieving a thermal
efficiency of 60 percent. How would you evaluate his claims?
Transcribed Image Text:Second Law of Thermodynamics 7 1. An automobile engine has a thermal efficiency of 48%. The temperature of the fuel is 350 °C, and the surrounding air is at 25 °C. Does the operation of this engine Violate the second law of thermodynamics? 2. An inventor claims to have perfected an engine that will produce energy by absorbing heat from a fuel at 300 °C and rejecting heat to the surroundings at 15 °C while achieving a thermal efficiency of 60 percent. How would you evaluate his claims?
Expert Solution
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Thermodynamics of Reactive System
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY