Rankine cycle - thermodynamics, Mechanical Engineering

Assignment Help:

Rankine cycle - Thermodynamics:

The major problems of Carnot cycle is compressing very wet steam mixture from the condenser pressure up to boiler pressure. The trouble can be avoided by condensing steam in the condenser and then compressing the water in a comparatively small feed pump. The effect of modification is to make the cycle practical one. Further, far less work is required to pump liquid than to compress vapour and therefore this modification has the result that the feed pump's work is one or two per cent only of the work developed by turbine. We can thus neglect this term in our cycle analysis.

 

1566_Rankine cycle.png

The idealized cycle for simple steam power plant taking into account above modification is called as Rankine cycle shown in the figure given above. It is made from four practical processes:

2309_Rankine cycle1.png

(a) 1 - 2 :Heat is added to increase temperature of the high-pressure water up to its saturation value (process 1 to A). The water is evaporated at constant temperature and pressure (process A to 2). Both processes occur within boiler, but not all the heat supplied is at the maximum cycle temperature. Therefore, the mean temperature at which heat is supplied is lower than the equivalent Carnot cycle. Therefore, the basic steam cycle thermal efficiency is lower inherently. Applying first law of thermodynamics to this process.


Related Discussions:- Rankine cycle - thermodynamics

Axis inclain to vp and parallel to hp., draw the projection of hexagonal pr...

draw the projection of hexagonal prism of base side 20mm & axis length 50mm. when it is lying on the ground on one of its rectangular phase and axis is inclained 35 degree to vp. s

Law of Parallelogram of Forces, To finding ? in Law of parallelogarm forces...

To finding ? in Law of parallelogarm forces We take Q sina(Along Vertical Side) & Q cosa(Along Horizontal Side) I didn''t get that point Q sina & Q cosa how it derived? Can you

Frictional force acting on the ladder, Frictional force acting on the ladde...

Frictional force acting on the ladder: A uniform ladder having length 13m and weighing 250N is placed against smooth vertical wall with its lower end 5m from wall. The coeffi

Som, What is the tesisting force

What is the tesisting force

Factor for selecting a digital encoder, What factors should be considered w...

What factors should be considered when selecting a digital encoder (line codes)? Briefly mention five of those factors. Use sketches and additional text to describe the following e

Furances, type of furances and disadvantage advantage

type of furances and disadvantage advantage

Define the binary vapour cycle, Write brief notes on the following : (a)...

Write brief notes on the following : (a) Draught System (b) Binary Vapour Cycle (c) Cooling Towers (d) Governing of steam turbines

Mchanical vibration, the base of a spring -mass- damper system is subjected...

the base of a spring -mass- damper system is subjected to the periodic displacement. determine the response of the mass using the principle of superposition

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