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What is exergy? what is energy? what is entropy?

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Question added by James Mhango , Maintenance planner , Coega Development Corporation.
Date Posted: 2016/01/14
Suthin Surendran
by Suthin Surendran , Systems Administrator , Tata Consultancy Services - Other Locations

Energy can be defined as the process in which objects are converted or transformed from one form to the other or in other words the capacity to do work. It cannot be created nor destroyed . For example thermal energy, chemical energy, and solar energy etc. Energy is classified into two types:1) Potential energy2) Kinetic energy.

Entropy can be defined as the randomness or disorder of a system.

Exergy can be defined as the energy available to be used in a particular system.

John Piterson
by John Piterson , Trumpeter , Sportland

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ENTROPY is degree of randomness in system

Exergy is available energy in the total heat energy is exergy and unavailable energy is anergy

SAEB Akl
by SAEB Akl , French teacher , Sryian ministry education

the energy that would be generated from the up level of temperature 

md islam
by md islam , Merchandiser , Mondol Fabrics ltd

Exergy(also called availability or available energy),which is the maximum useful work that could be obtained from the sytem at a given state in a specified enviroment.

Zia Ur Rehman
by Zia Ur Rehman , Internee , Attock Refinery Limited, Morgah ,Rawalpindi

Exergy(also called availability or available energy),which is the maximum useful work that could be obtained from the sytem at a given state in a specified enviroment.

Energy can be viewed as the ability to cause changes.Thermodynamics includes all aspects of energy and energy transformations.

In simple words ,energy is ability to do work.

Entropy can be viewed as  a measure of molecular disorder  or moleculer randomness..As a system becomes more disordered,positions of molecules becomes less predictable  and entropy increases.

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