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INTRODUCTION TO FIRST LAW OF THERMODYNAMICS

INTRODUCTION TO FIRST LAW OF THERMODYNAMICS. EXAMPLES FOR FIRST LAW OF THERMODYNAMICS. EXAMPLES FOR FIRST LAW OF THERMODYNAMICS. EXAMPLES FOR FIRST LAW OF THERMODYNAMICS. PROBLEMS. dU = ∫ δ Q - ∫ δ W U 2 –U 1 =∫ δ Q - ∫ δ W U 2 = U 1 ( Closed Cycle ) 0 = ∫ δ Q - ∫ δ W

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INTRODUCTION TO FIRST LAW OF THERMODYNAMICS

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  1. INTRODUCTION TO FIRST LAW OF THERMODYNAMICS

  2. EXAMPLES FOR FIRST LAW OF THERMODYNAMICS

  3. EXAMPLES FOR FIRST LAW OF THERMODYNAMICS

  4. EXAMPLES FOR FIRST LAW OF THERMODYNAMICS

  5. PROBLEMS dU = ∫δQ - ∫δW U2 –U1 =∫δQ - ∫δW U2 = U1 ( Closed Cycle ) 0 = ∫δQ - ∫δW ∫δQ = ∫δW So if ∫δQ = ∫δW , FLT is fulfilled. ∫δQ =7000-3500+17500+0 =21000 J/s ∫δW =5300+9100+8700-2100 =21000 J/s Thus FLT is satisfied. Net rate of work = Power = 21000 J/s =21 kW Thermal Efficiency = Net Work / Heat In put Heat Input = Sum of all positive quintiles = 7000 + 17500 =24500 J/s Thermal Efficiency = Net Work / Heat In put = 21000 / 24500 =85.71 %

  6. PROBLEM

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