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Practicability of Carnot Model

Practicability of Carnot Model. By P M V Subbarao Mechanical Engineering Department I I T Delhi. http://web.iitd.ac.in/~pmvs. Critical Analysis of Pure Theoretical Model…. Parametric Study of Canot Model. Important Materialistic Questions!. Is there a relation between Material and Energy?

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Practicability of Carnot Model

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  1. Practicability of Carnot Model By P M V Subbarao Mechanical Engineering Department I I T Delhi http://web.iitd.ac.in/~pmvs Critical Analysis of Pure Theoretical Model…..

  2. Parametric Study of Canot Model

  3. Important Materialistic Questions! • Is there a relation between Material and Energy? • How can Energy exist without a Material ?!?!?! • Both Material and Energy are important. • Body and Soul, both are important. • Kwoledge and Utilization (Implementation), both are essential. • Sangham Saranam Gachchami !!!

  4. Techno-commercial Parameters

  5. Optimal Design : Carnot Model Minimize the capital & running costs. Compact and efficient Very efficient and Extremely bulky. Realization of compression of isentropic compression of vapour-liquid mixture.

  6. A Major Crossroad Confusion: How to go from <6% to 75% Efficiency ???????

  7. Rankine, William John Macquorn(1820-1872) Rankine was appointed to the regius chair of civil engineering and mechanics at Glasgow in 1855. His ... inaugural address espoused the harmony of theory with practice in mechanics, and outlined a tripartite theory of knowledge - theory, practice, and the application of theory to practice - which left room for a new breed of engineering scientists to bridge theoretical and practical domains.

  8. The Mathematician in Love • I : A mathematician fell madly in love With a lady, young, handsome, and charming: By angles and ratios harmonic he strove her curves and proportions all faultless to prove. As he scrawled hieroglyphics alarming. • II :He measured with care, from the ends of a base, The arcs which her features subtended: Then he framed transcendental equations, to trace The flowing outlines of her figure and face, And thought the result very splendid. • III : He studied (since music has charms for the fair) The theory of fiddles and whistles, --Then composed, by acoustic equations, an air, Which, when 'twas performed, made the lady's long hair Stand on end, like a porcupine's bristles. • IV: The lady loved dancing: -- he therefore applied, To the polka and waltz, an equation; But when to rotate on his axis he tried, His centre of gravity swayed to one side, And he fell, by the earth's gravitation. • V : No doubts of the fate of his suit made him pause, For he proved, to his own satisfaction, That the fair one returned his affection; -- "because, "As every one knows, by mechanical laws, "Re-action is equal to action." • ……………………………..

  9. How about a modified cycle - A Rankine cycle • To avoid transporting and compressing two-phase fluid, try to condense all fluid exiting from the turbine into saturated liquid before compressed it by a pump. • when the saturated vapor enters the turbine, its temperature and pressure decrease and liquid droplets will form by condensation. • These droplets can produce significant damages to the turbine blades due to corrosion and impact. • One possible solution: superheating the vapor. • It can also increase the thermal efficiency of the cycle.

  10. P M V Subbarao Mechanical Engineering, IIT Delhi The Rankine Cycle: An Alternate Ideal Thermodynamic Model An appropriate amalgamation of Theory and Practice …

  11. Ideal Rankine Cycle

  12. P M V Subbarao Mechanical Engineering, IIT Delhi Thermodynamic Modeling of Rankine Cycle: An Alternate Ideal Thermodynamic Model • Good Blue Print Minimizes Design & Development Time & Money…

  13. The Rankine Cycle

  14. Pump : Isentropic Process : s1 = s2 1 2 SSSF: Conservation of mass First Law : No heat transfer, change in kinetic and potential energies are negligible

  15. 2 – 3 : Boiler: Isobaric Heating : p3 = p2 No work transfer, change in kinetic and potential energies are negligible QCV 3 2 Assuming a single fluid entering and leaving…

  16. Turbine : Isentropic Process :s4=s3 3 T 4 No heat transfer. Change in kinetic and potential energies are negligible Assuming a single fluid entering and leaving…

  17. 4 – 1 : Condenser : Isobaric Cooling : p4 = p1 QCV 4 1 No work transfer, change in kinetic and potential energies are negligible Assuming a single fluid entering and leaving…

  18. Analysis of Cycle • First law for a cycle:

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