When you want to succeed as bad as you want to breathe, then you’ll be successful.
--Your friends at LectureNotes

Note for Basics of Mechanical Engineering - BME by Yash Yadav

  • Basics of Mechanical Engineering - BME
  • Note
  • Christ University -
  • Uploaded 2 months ago
Yash Yadav
Yash Yadav
0 User(s)
Download PDFOrder Printed Copy

Share it with your friends

Leave your Comments

Text from page-1

Thermodynamics of Heat Engines. • A heat engine is any device that can take energy from a warm source and convert a fraction of the heat energy to mechanical energy. Diagrammatically, a heat engine is represented as follows: Heat Source, Thot Qhot Work Output Heat Heat Engine Engine Qcold Heat Sink, Tcold W = Qhot - Qcold

Text from page-2

Heat Engines A steam engine is one type of heat engine.

Text from page-4

Thermodynamics of Heat Engines. • The thermal efficiency of any system is defined to be the ratio of the work done to the heat input: work done thermal efficiency = heat input • For any heat engine, Q hot − Q cold  Q cold   100% Eff th = = 1 − Q hot  Q hot  • A Carnot engine is an ideal heat engine. For the Carnot Engine, Qcold/Qhot = Tcold/Thot. Therefore, Thot − Tcold  Tcold   100% Eff th = = 1 − Thot Thot  

Lecture Notes