Introduction

Defination

        The field of science, which deal with the engineering possed by gases and vapours, is known as Thermodynamics. It also includes the conversion of these energies in terms o heat and mechanical work and their relationship with properies of the system. A machine, which convert heat into mechanical work or vice versa, is known as Heat Engine. The field of engineering science, which deals wit the applications of thermodynamics and its laws to work producing and work absorbing devuces, in order to understand their functions and improve their performance, is known as Themal Engineering.