Steam power plant , Mechanical Engineering

Assignment Help:

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 type plant operates on thermodynamic cycle in closed loop of processes following one another such that working fluid of steam and water repeats the cycles continuously. If first law of thermodynamics is applied to thermodynamic cycle in which working fluid returns to the initial condition of it, the energy flowing into fluid at the time of cycle should be equal to that flowing out of cycle.

Qin + Win = Qout + Wout Or,    Qin  - Qout = Wout - Win Where;

Q = Rate of Heat transfer

W = Rate of work transfer, that is power

Heat and work are mutually convertible. However, quantity of work energy can be converted into heat energy, the converse is not true. A quantity of heat cannot be converted into work.

Heat flows because of temperature difference, and this means that in order to flow, two heat reservoirs should be present; a hot source and a cold sink. During heat flow from the hot source to cold sink, a fraction of flow can be converted into work energy, and function of power plant is to generate this conversion. However, some heat should flow into the cold sink because of its presence. Thus rate of heat transfer Qout of the cycle should always be positive and the efficiency of conversion of heat energy into work energy can never be 100 percent at all. Thermodynamic efficiency for the cycle, nth is the measure of how well cycle converts heat into work.

1809_Steam power plant.png


Related Discussions:- Steam power plant

Evaluate total extraction, Evaluate total extraction: The steel tie r...

Evaluate total extraction: The steel tie rod 50mm in diameter and 2.5m long is subjected to pull of 100 KN . To what length the rod must be bored centrally so that total ext

Gathering lines, Gathering Lines: A gathering line, also called a lad...

Gathering Lines: A gathering line, also called a ladder track, is one into which a number of parallel tracks merge. This is shown in Figure. It is used in marshalling yards.

Grease gun--tool and equipment , Grease Gun: A grease gun is shown in Figu...

Grease Gun: A grease gun is shown in Figure. This is used to supply semi-solid lubricant (grease) for chassis lubrication. Figure : Grease Gun

Explain about surface preparation, Q. Explain about Surface Preparation? ...

Q. Explain about Surface Preparation? All oil, grease, salts, and any other contaminants detrimental to the formation of a good coating bond or coating quality must be removed

Creep, Creep in belt drive

Creep in belt drive

State - thermodynamics, STATE - Thermodynamics: The State of system is...

STATE - Thermodynamics: The State of system is its condition or configuration described in detail. State is the condition of the system which is identified by thermodynamic

Show the limitations of rigid bed models, Q. Show the Limitations of Rigid ...

Q. Show the Limitations of Rigid bed models? Due to vertical exaggeration, model slope automatically becomes steeper than in the prototype, this slope exaggeration being the sa

Matter, Matter, Particle and Weight: Sol: Matter: Matter is anythi...

Matter, Particle and Weight: Sol: Matter: Matter is anything which occupies space and have some mass, offers resistance to any stress, for example Iron, stone, air, Water.

Control , hey i really need someone to help doing my control course work as...

hey i really need someone to help doing my control course work asap cuse it is due sunday it is about Control of water level in a nonlinear ‘V’ shaped tank

Theory of machine, Kleines contruction for slider mechanism

Kleines contruction for slider mechanism

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd