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Energy consumption has to be optimized because Energy sources are limited and not shared equally around the world.

 

The energy forms we mainly use are heat, light and mechanical work. Most of the others may be regarded as subsidiary forms. The transformation between different forms of energy are called conversion.

Almost everything that happens involves conversion of energy

Whenever something happens energy is converted from one form to an other, i.e. an energy conversion. Everything that can be described as a change in time involves an energy conversion, from a supernova explosion to a thought of mind. The amount of energy being converted may be large or small, but without exception energy is converted in everything that happens.

Energy:

The word energy is derived from the Greek: en (in or internal)and ergon (force or work). The concept was first formulated in the middle of the 19th century by lord Kelvin and Joule, after many scientists (Benjamin, Thomson, Carnot, Mayer and others) for decades had tried to find relations between mechanical work, power (horse power) and heat.

Exergy

(ex = outer, ergos = work, cf. energy: en = internal) The word exergy is derived from the Greek ex (out or outer) and ergon (force or work).

The concept was first noticed in 1824 by Carnot in the relation of heat and work.

By introducing exergy, we may treat energy and entropy simultaneously, i.e. “kill two birds with one stone”.

Th2b inc. is dedicated to the optimization of energy use through thermodynamic analysis of processes and systems.