# What is Kelvin Planck constant?

## What is Kelvin Planck constant?

The Kelvin–Planck statement (or the Heat Engine Statement) of the second law of thermodynamics states that it is impossible to devise a cyclically operating heat engine, the effect of which is to absorb energy in the form of heat from a single thermal reservoir and to deliver an equivalent amount of work.

What is Clausius and Kelvin Planck?

The Kelvin-Planck statement is the statement of the second law of thermodynamics for heat engines, while the Clausius statement is the statement of the refrigerators and heat pumps.

### What does the Kelvin-Planck statement State?

The Kelvin-Planck Statement: It is impossible to construct a device which operates on a cycle and produces no other effect than the transfer of heat from a single body in order to produce work.

Is application of Kelvin-Planck statement?

The real-life applications of thermodynamics are plenty. To move the boat, heat energy is converted into work energy. Thus, we realize that it is impossible to build an engine that converts heat from one reservoir, completely into work. This aids the Kelvin Planck statement.

#### How can we violate Kelvin-Planck statement?

If such an arrangement is possible it would also violate Kelvin-Planck statement. Let a heat engine operating between the same reservoirs at T2 and T1 take in Q2 as heat input at T2. It converts a part of this heat into work and rejects heat Q3to the sink at T1. Hence it violates the Kelvin-Planck statement.

What is Carnot Theorem?

Carnot’s theorem states that all heat engines between two heat reservoirs are less efficient than a Carnot heat engine operating between the same reservoirs. Every Carnot heat engine between a pair of heat reservoirs is equally efficient, regardless of the working substance employed or the operation details.

## Why is Carnot engine Impossible?

No engine has been built using the cycle named in honor of Carnot because two parts of the cycle require total insulation. And two require conduction with one of either the hot or the cold sinks.

What was Clausius statement?

Clausius Statement from the second law of thermodynamics states that: “It is impossible to design a device which works on a cycle and produce no other effect other than heat transfer from a cold body to a hot body.”

### What is the Kelvin-Planck expression of the second law?

Kelvin-Planck Statement of the Second Law: “It is impossible to construct a device which operates on a cycle and produces no other effect than the production of work and the transfer of heat from a single body”.

What is PMM1 and why it is impossible?

perpetual motion machine-1 is a machine which does not obey first law of thermodynamics. we all know that ,as one cannot do the work continuously without consuming some amount of energy. perpetual motion machine works by supplying work continuously without consuming or taking in some energy. so it is impossible.

#### Why is Carnot engine most efficient?

The Carnot cycle is reversible representing the upper limit on the efficiency of an engine cycle. The Carnot cycle achieves maximum efficiency because all the heat is added to the working fluid at the maximum temperature.