Calculate energy and entropy - thermodynamics, Mechanical Engineering

Thermodynamics. Justify that it is the science to calculate energy, energy and entropy.

Sol : Thermodynamics is science which deals with conversion of heat into mechanical energy. It is  based upon observations of general experience, that have been formulated into thermodynamic laws. These laws govern principles of energy conversion. The applications of thermodynamic laws and principles are found in all the fields of energy technology, especially in steam and nuclear power plants, air conditioning, gas turbines, refrigeration, gas dynamics, internal combustion engines jet propulsion, chemical process plants, compressors, and direct energy conversion devices.

In general thermodynamics contains four laws;

1. Zeroth law: it deals with thermal equilibrium and establishes concept of temperature.

2. The First law: throws introduces the concept of internal energy.

3. The Second law: indicates limit of converting heat into work and introduces the principle of increase of entropy.

4. Third law: defines absolute zero of entropy.

These laws are based on experimental observations and have no mathematical proof. Similar to all the physical laws, these laws are based on logical reasoning.

Thermodynamics is study of energy, energy and entropy.

The entire heat energy cannot be converted into mechanical energy by machine. Some portion of heat at low temperature has to be librated to the environment.

The portion of heat energy, that is not available for conversion into work, can be measured by entropy. The part of heat, that is available for conversion into work, is called as energy.

Hence, thermodynamics is science, which calculates energy, energy and entropy.

Posted Date: 10/13/2012 8:50:10 AM | Location : United States







Related Discussions:- Calculate energy and entropy - thermodynamics, Assignment Help, Ask Question on Calculate energy and entropy - thermodynamics, Get Answer, Expert's Help, Calculate energy and entropy - thermodynamics Discussions

Write discussion on Calculate energy and entropy - thermodynamics
Your posts are moderated
Related Questions
Kinetics: Define Kinetics. What is plane motion? Sol: Kinetics is that branch of mechanics, which deals with force system that produces acceleration and resulting motio

Brazing Brazing is a group of welding processes, which produces, coalescence of materials by heating them to a specific temperature and by using a filler metal having a liquids a

Explain Young's Modulus or Modulus of elasticity? Sol. : It is ratio between tensile stress and tensile strain or compressive stress and compressive strain. It can be denote

Standard for the specific standard technical areas These norms are based on previously described models. Typical categories of these norms are: (a)  drafting, which describe

Steam power plant: Steam power plant converts heat energy Q from combustion of fuel into mechanical work W of shaft rotation which is used to generate electricity. This ty

Illustrate the terms : (i) State (ii) Process and (iii) Cycle What is a quari static process ? Illustrate with an example. What are point function and path function.


in orthographic projection why in quadrant is taken in anticlock wise

Roller conveyors are flat circular or spiral. They consist of rollers supported in frames over which materials are allowed to move. They are driven through gravity. Genera

Q. Show Material selection process? • Design life shall be based on project design criteria and normally 10 to 15 years' service life specified for well pads, 20-25 years for C