Question

Write the official Kelvin-Plank statement of the Second Law as well as a simplified version of it that is more easily grasped. Write the official Clausius statement of the Second Law as well as a simplified version of it that is more easily grasped.

Answer 1

Answer:

Kelvin-Plank statement of the second law:

" It is not possible to construct a heat engine which operates cyclically which in effect absorbs energy from a thermal reservoir (single) in the form of heat and deliver in output an equivalent or net work work"

Simplified form:

It is impossible to device a heat engine with  100% thermal efficiency i.e, it cannot transfer heat from a thermal reservoir to net work done i.e, some amount of heat will be lost.

Clausius Statement of the second law:

" It is impossible to design a device in a way that when operating in a cycle , it will transfer heat from a cooler body to a hotter body only without any other effect"

Simplified form:

It is not possible to design a device which can transfer heat from low to high temperatures without the requirement of any external work as input. With the help of external work, heat, in the system can be transferred from low to high temperatures.

Answer 2

Answer:

Explanation:

The official statement of Kelvin-Plank :

''It is impossible for a heat engine to produce net work in a complete cycle if it exchanges heat only with bodies at a single fixed temperature''.

Two reversible adiabatic paths can not intersect each other which violates the kelvin-planks statement.The machine which violate Kelvin-plank statement is called PMM2.

Simplified form:

We can say that it is impossible to covert all heat energy in to work with out rejecting heat in to the surrounding when operating in a cycle.