Thermal Engineering

1. Course-Thermal Engineering(22337)
Program -Mechanical Engineering
Semester-3
Unit-1 Fundamentals of Thermodynamics
By
Mr. Manoj Manik Charate
Lecturer
Mechanical Engineering Department
Brahmdevdada Mane Polytechnic, Belati, Solapur
Affiliated to
Maharashtra State Board of Technical Education, Mumbai.
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2. Course Outcomes
C303.1 Apply laws of thermodynamics
to devices based on thermodynamics.
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3. Contents
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 Heat
 Work
 Difference between Heat & Work
 Energy
 Types of Energy (a) Potential Energy
(b) Kinetic Energy
(c) Internal Energy
 Enthalpy
 Entropy

4. Heat (Q)
 Q= m c ∆T Joule or
calorie
 1 cal = 4.184 Joule
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5. Work (W)
W = F x D Joule
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6. Work (W)
W = F x D Joule
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F= 20 N
D= 3 m
W= 20 X 3
W= 60 N-m or Joule

7. Sign Convention Heat & Work
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Work
Negative
Work
Positive

8. Sign Convention Heat & Work
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System
Surrounding
Boundary
Work
(+)
Heat (-)
Heat (+)
Work
(-)

9. Energy
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ENERGY -is the
capacity to do
work.

10. Forms of Energy
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11. Types of Energy
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12. Kinetic Energy
K.E.= 1/2 m v2 Joule
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m= 50kg, V= 25 m/sec
K.E.= 1/2 x 50 x (25) 2
K.E.=15625 Joule

13. Potential Energy
P.E.= m g h Joule
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P.E. = 120 x 9.81 x 150
= 176580 Joule

14. Forms of Potential Energy
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15. Potential Vs Kinetic Energy
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16. Internal Energy(U)
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17. Enthalpy (H)
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ΔH = ΔU + PΔV J or KJ
Enthalpy
Increases
Enthalpy
Decreases
Heat
In
Heat
Out

18. Entropy (S)
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ΔS = dQ / T J / K

19. Thank You !
20Prepared by Mr. Manoj Manik Charate