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
What type of low lube oil security recommended for API612 steam turbines.(Electronic/Mechanical). Please give refrences

Sleepers: The sleeper is the part of the track on which the rails rest. Its functions are : (a) To hold the rails to the correct gauge. (b) To transmit and distribute t

With the assistance of the airplane information and the Dutch roll approximation values shown in Table Q3: Table Q3 (a)  Determine the Dutch roll eigenvalues. (b)  Dete

Explain about the footings how it is transmit loads. Footings are generally the lowermost supporting part of the structure known as sub-structure and are the last structural e

(a) Describe the basic procedure for mechanical engg. design. (b) What is the relationship between the functional requirement and appearance of product?

Q. What is Forced Draft Fan? Fan shall comply with API 673 as supplemented by the following: (para. references are to API 673). Where the intake air is unfiltered, the Vendo

(a) What is a coated tool? What are its advantages? What types of coatings are used in cutting tool. Discuss. (b) Discuss different types of cutting fluids, their properties and

If Engine Misfires Causes of Problem Remedy Incorrect Electrode gap of spark plug Electrode worn out Foule

Clutch cable model: Ensure the cables fitted are of the respective model and not interchanged with other model. Also ensure that the cable is genuine.

Calculate the vertical deflection: Calculate the vertical deflection at the tip of the cantilever shown in Figure Figure Solution Measuring the distance x f