First law of thermodynamics, Mechanical Engineering

First law of thermodynamics:

The First Law of Thermodynamics states that work and heat are equally convertible. The present tendency is to include all the forms of energy. The First Law can be stated in a number of ways:

1. Energy can neither be created nor destroyed; but it can be conserved from one form to another.

2. All energy which goes into system comes out in some form or the other. Energy does not disappear and has the ability to be converted into any other form of the energy.

3. If system is carried through cycle, the summation of work delivered to surroundings is equal to summation of heat taken from surroundings.

4. No machine can generate energy without corresponding expenditure of energy.

5. Total energy of isolated system in all the form, remain constant

The first law of thermodynamics cannot be proved mathematically. 

 

 

Posted Date: 10/15/2012 2:09:44 AM | Location : United States







Related Discussions:- First law of thermodynamics, Assignment Help, Ask Question on First law of thermodynamics, Get Answer, Expert's Help, First law of thermodynamics Discussions

Write discussion on First law of thermodynamics
Your posts are moderated
Related Questions


Direct Current ( DC ) :  The direct current flows through a wire in one direction and it remains same over time. The current from battery is always direct current. Direc

Derive the mathematical expression for heat transfer and temperature distribution through infinite long fin?

The steam that leaves the super-heater is expanded from 130bar at 535°C to 25.2bar at 310°C in a high pressure turbine. The steam from the exit of the HP turbine is reheated to 535

Q. Ventilation process of plant? Due to the possibility of accidental discharges of flammable gas and flashing liquid (e.g. leaks, incorrect valve opening, sampling, etc.); ade

What is an open pair?

(a) Explain safety features of latest vehicles. (b) Discuss the advantages and disadvantages of front wheel drive vehicles over rear wheel drive vehicles.

Q. Properties of plastic? Their great variety of physico- chemical and mechanical properties, and ease with they can be made into various articles have found plastic their wide

Friction: you have learnt laws of friction and problems involving dry friction. The relative sliding motion of one body on another body is resisted by forces called as frictio