Limitations of first law of thermodynamics

this talks about only limitations of first law of thermodynamics

1. Limitations of first law of thermodynamics Name : Vedant D. Rajput Enrolment no.:150010119120 Subject :Engineering Thermodynamics

2. REFRENCES Engineering thermodynamics by P.K. Nag Google images

3. What will I discuss?? First law of thermodynamics First limitations of first law of thermodynamics. Second limitation of first law of thermodynamics. Third limitations of first law of thermodynamics.

4. First law of thermodynamics The First law of thermodynamics states that :- “Energy can never be destroyed nor can be formed, it can just be transformed from one phase to another.”

5. FIRST LIMITATION Limitation:- First law does not help to predict whether the certain process is possible or not. Reason:- It does not specify that heat cannot flow from low temperature body to a high temperature body.

6. SECOND LIMITATION Limitation:- The first law does not give information about direction. Reason:- For example, it puts no restriction on the direction of the flow of heat, whether heat can flow from a cold body to a hot body or vice versa.

7. THIRD LIMITATION Limitation:- It does not provide and specify sufficient condition for the process to take place. Reason:- This Law is silent about its % of conversion of energy from one form to another form. Work can be converted into equivalent amount of heat but heat cannot be converted into equivalent amount of work.