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

If engine does not start in wet or damp weather, If Engine Does Not Start i...

If Engine Does Not Start in Wet or Damp Weather Causes of Problem Remedy   Insulators are not clean and dry Fuel t

Trippaing, how thw trippaning process work

how thw trippaning process work

What are major cutting tools used for machining of metals, a) What are majo...

a) What are major kinds of cutting tools used for machining of metals? b) What important role the chip breakers play during machining of metals? c) Write four important requi

Diaphragm spring single plate, Give the working and consideration of a diap...

Give the working and consideration of a diaphragm spring single plate clutch in disengaged position. Discuss in detail the constructional features of a clutch plate. Explain the

Calculate the reactions at the bottom of the vessel, (a) What are the basic...

(a) What are the basic conditions for a body to be in state of equilibrium? (b) Two steel cylinders of similar diameter are supported in a rectangular vessel. The width of the v

.fluid mechanics., to find a horizontal force acting on a body which is inc...

to find a horizontal force acting on a body which is inclined to the plane with a particular angle

Newton law of motion - second law, Newton law of motion: Secon d Law...

Newton law of motion: Secon d Law The rate of change of momentum is proportional to external force applied on the body and take place, in the same direction in which the

Explain about the footings how it is transmit loads, Explain about the foot...

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

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