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
When a Plano-convex lens of large radius of curvature is placed on a glass plate with its convex surface, a thin air film of gradually increasing thickness is formed between the up

Transformer for flash butt welding The transformer required for flash butt welding is similar to that needed for other resistance welding processes. Here, the transformer is to

in a closed cycle steam enters the turbine at a temperature of 400oc and a pressure of 4000kpa and is condensed at 10kpa

With neat diagram illustrate the cycle of operation of four-stroke spark ignition engine. In what respects four-stroke cycle CI engine differ from that of SI engine ?

Advantages of Abrasive Jet Cutting Machines 1. Ability to cut brittle or heat sensitive material without damage. 2. Capability to cut intricate holes in material of any hard

Advantages of resistance welding   1. Resistance welding is very fast compared to arc welding. 2. Almost any combination of metals can be resistance welded provided necessa

digram of michelson inteferometer

I would like a help for my fluid mechanics assignment

general characteristic of bulk deformation and different process and corresponding product properties

what is mean by minimum work term in reciprocating compressor?