Carnot cycle - thermodynamics, Mechanical Engineering

Carnot Cycle - thermodynamics:

Carnot Cycle: Sadi carnot; this is based on second law of thermodynamics introduced the concepts of reversibility and cycle in the year 1824. He shows that the temperature of heat source and heat sink are basis for determining thermodynamics efficiency of reversible cycle. He showed that all such cycles should reject heat to the sink and efficiency is never 100 percent. 

To show a non existing reversible cycle, Carnot invented his famous but hypothetical cycle called as Carnot cycle. Carnot cycle comprise of of two isothermal and two reversible adiabatic or isentropic operation. The cycle is illustrated in P-V and T-S diagrams

1247_Carnot Cycle.png

 

Operation 1-2: T = C

Q1  = W1-2  = P1V1lnV2/V1  = mRT1lnV2/V1

Operation 2-3: PVy  = C

Q = W = 0

Operation 3-4:  T = C

Q2  = W3-4  = P3V3lnV4/V3  = P3V3lnV4/V3   = mRT2lnV3/V4

Operation 4-1: PVy  = C

Q = W = 0Net WD = mRT1lnV2/V1 - mRT2lnV3/V4 ; As the compression ratio = V3/V4 = V2/V1, T2 = T3

W = mRlnV3/V4(T1  - T3)

 

Posted Date: 10/15/2012 3:17:18 AM | Location : United States







Related Discussions:- Carnot cycle - thermodynamics, Assignment Help, Ask Question on Carnot cycle - thermodynamics, Get Answer, Expert's Help, Carnot cycle - thermodynamics Discussions

Write discussion on Carnot cycle - thermodynamics
Your posts are moderated
Related Questions
Describe the use of computer in : (i) Design (ii) Manufacturing Illustrate the design process and application of CAD.

To design a cantilevered truss to support the loads shown in the figures, two layouts are proposed as shown in Figs. A and B. All truss members are steel with allowable stress of 2

Find out the reactions at point: A beam AB is hinged at A and is supported at C. It is loaded as revealed in Figure. Find out the reactions at A and C. Solution L

APPLICATION OF GOVERNOR


Find out the product of inertia of a rectangular area: Find out the product of inertia of a rectangular area b × d with respect to its sides as illustrated in Figure Solut

The Circular Orbits The bounded motion of a particle in a central force is in general an ellipse given by   where eccentricity e is related to semi-major and minor axes a

(a) Can you explain the limitations of 1 s t law of thermodynamics ? Describe thermal energy Reservoir, heat sink and heat source. (b) Give the basic concept of Heat Engine, Ref

Track Renewal: Need for Track Renewal Normal maintenance is able to keep up the track standards only to a limited extent. The track gets overaged or the speeds and tr

V icke r ' s Hardness Test: This test is alike the Brinell test but uses different indenter. A square based pyramid of cone angle 136 ° is used. The applied load can be 5,