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What is Heat Transfer?
Heat is the form of energy that flows from body at high temperature to the body at low temperature. There are three modes of heat transfer: conduction, convection and radiation. Some media is required for transfer of by conduction and convection, but for radiation no media is required.

Published by Haresh Khemani (14,059 pts ) on Aug 24, 2008 to
Mechanical Engineering Articles
What is the Latent Heat of the Substance?
The amount of heat required to change the phase of the substance is called as the latent heat of substance. There are three phases of substance: solid liquid and gaseous, accordingly there are three types of latent heats.

Published by Haresh Khemani (14,059 pts ) on Aug 19, 2008 to
Mechanical Engineering Articles
What is Reversible and Irreversible Process?
There are two main types of thermodynamic processes: reversible process and th irreversible process. The reversible process is the ideal process which never occurs, the irrversible process is the natural process which is commonly found in the nature.

Published by Haresh Khemani (14,059 pts ) on Aug 16, 2008 to
Mechanical Engineering Articles

The Principle of Increase of Entropy
The entropy of the system never reduces. In the ideal process it can remain remain constant, but in actual process the entropy of system and universe always increases. Let us why the entropy of the universe always increases and its relation to second law of thermodynamics.

Published by Haresh Khemani (14,059 pts ) on Aug 16, 2008 to
Mechanical Engineering Articles
What is Entropy?
The term entropy was first used by Rudolf Clausius to state the second law of thermodynamics. Though entropy is a simple term, many people find it difficult to understand its exact meaning. Let us see what is entropy, and its relation to second law of thermodynamics.

Published by Haresh Khemani (14,059 pts ) on Aug 15, 2008 to
Mechanical Engineering Articles
Types of Thermodynamic Systems and Important Terms Related to Thermodynamics – Part 1
Themodynamics is an important subject area studied under mechanical engineering. There are number of terms related to thermodynamics which are useful to know to understand this field. These terms and the types of systems in thermodynamics have been described in this article.

Published by Haresh Khemani (14,059 pts ) on Jul 31, 2008 to
Mechanical Engineering Articles

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