Department of Mechanical Engineering ME 322 – Mechanical Engineering Thermodynamics Lecture 16 Turbines, Compressors, Pumps.

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Presentation transcript:

Department of Mechanical Engineering ME 322 – Mechanical Engineering Thermodynamics Lecture 16 Turbines, Compressors, Pumps

The Laws of the Universe 2 Conservation of Mass – The Continuity Equation Conservation of Energy – The First Law of Thermodynamics

Thermodynamic Problem Solving 3 1. Sketch System & Boundary 2. Identify Unknowns (put them on sketch) 3. Classify the System (open, closed, isolated) 4. Identify Processes/States 5. Write Governing Equations (including auxiliary eqns) 6. Algebraically Solve 7. Calculate Values (carrying units w/numbers) 8. Check Results (eqns, algebra, calculations, signs, units) 9. Reflect (on the problem, on the solution, and/or on the problem solving process)

Turbine 4

Compressor 5 Air enters a compressor at 100 kPa, 280 K and is compressed to 600 kPa, 400 K in a steady state process. The volumetric flow of the air entering the compressor is 34 cfm (ft 3 /min). The compressor is experiencing a heat loss of 16 kJ/kg. Assuming that the changes in kinetic and potential energies are negligible, determine the power required to run the compressor.

Pump 6