LET'S SEE THAT THERMODYNAMICS NOTES PEOPLES

THERMODYNAMICS:-

When two system are each in thermal equilibrium with a third system, then the two system are also an thermal equilibrium with one another.

* First low of thermodynamics:- The heat and mechanical work are mutually convertive.

        | Phi s phi = phi s w    |

 Phi--> closed integration / closed path.

 S   --> Deltr.

 Phi--> Heat.

 W  --> Work done.

The energy can neither be created to be destroyed through it can be transformed from on from to another.

         | S phi-- SW= SE |

E--> Energy

* Second law of thermodynamics:-

a.) Kelvin plank low/ statement:-->

It is impossible to construct an engine work on a cycle process, whose sole purpose is to convert heat energy from a single thermal reservor ( tank) into an equivalent amount of work.

i.e----> figure 1.1....

                              figure 1.1....

b.) Clausium statement/ low:--> 

It is impossible for self activing machine work in a process to transfer at net from a body at a lower temperature to body aid of an external energy. figure 1.2....

                               figure 1.2....

* Enthalpy:--> The sum of internal energy and the external workdone of the given quantity of called energy and is generally donated by 'H' 

So, 

                H= E+ PV

Where     E= Internal energy

                P= pressure

                V= Volume.

* Entropy:--> Entropy is a function of the function quantity of heat is shown the possibility of conversation of the heat into useful work.

                       The increase in entropy is a small when heat is added at there at a higher temperature and greater when the heat addition is made at a lower temperature  Thus of maximum entropy there is minimum availability for conversation into work and minimum entropy there is maximum availability for conversation into work.

* Introduction of thermodynamics:--> thermodynamics is the branch of science which deals with energy transformation and the relationship between the properties of the working substance these transformation govered by the various laws of thermodynamics, The working substance or the working field which may be in ingasious or liquid form, convey energy one point to another.