• Skip to content
  • Skip to primary sidebar
  • Educational Article
  • Technical Articles
  • Engineering Physics
  • English Grammar
  • Engineering Chemistry

Educational Portal

Multiple choice Quiz, Technical, educational articles.

Your Page Title

Kelvin‐Planck and Clausius statements of second law of thermodynamics

December 25, 2020 by imBooz Leave a Comment

Download

Q: Give Kelvin‐Planck and Clausius statements of the second law of thermodynamics.

Justify that violation of the Kelvin‐Planck statement leads to violation of the Clausius statement and vice versa.

Kelvin‐Planck statement: It is impossible to construct a heat engine or device which operates in a cycle that produces no other effects than the production of work and the transfer of heat from a single body.
The efficiency of such an engine would be 100 %

Such a device violates Kelvin-Planck’s statement even though it satisfies the first law of thermodynamics, i.e. principle of conservation of energy.

Download

Fig. A heat engine that violates the Kelvin‐Planck statement of the second law cannot be built

Fig. A heat engine that favors the Kelvin‐Planck statement

Clausius Statement :                                                  

“It is impossible to construct a device that operates on a cycle whose main result is the transfer of heat from a cooler body to a hotter body without the assistance of external work.

Download

According to the above statement, it is clear that heat cannot flow itself from a lower temperature body to a higher temperature body without the assistance of an external work [Figure (a)]. This process is impossible and violates the Clausius statement of the second law of thermodynamics.

Alternatively, heat can transfer from a low-temperature body to a high-temperature body with the help of external work (W) [Figure (b)]. This process is possible.

Filed Under: Technical Articles Tagged With: Clausius Statement, Kelvin‐Planck statements

Reader Interactions

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Primary Sidebar

Recent Posts

  • Overview of Computer Aided Design (CAD) | Advantages | Co‐ordinate systems | drawing commands
  • Solved Numericals of Engineering Drawing – ED 22 Solved Questions
  • What is dimensioning? Various dimensioning systems- Engineering Drawing
  • Working principle of Bell Coleman air refrigeration system
  • Kelvin‐Planck and Clausius statements of second law of thermodynamics
  • Different types of gears used for power transmission
  • Efficiency of Rankine cycle
  • What are various Boolean identities?
  • What is the Basic Logic Gate? Describe the OR, AND, NAND gate with the help of the truth table.
  • What is a diode? What is the application of it?

Categories

DMCA.com Protection Status

Copyright © 2021 · Magazine Pro on Genesis Framework · WordPress · Log in