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BTE 1013 ENGINEERING SCIENCEs

BTE 1013 ENGINEERING SCIENCEs. 9. GAS LAWS AND ENGINE POWER. NAZARIN B. NORDIN nazarin@icam.edu.my. GAS LAWS. Ideal Gases

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BTE 1013 ENGINEERING SCIENCEs

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  1. BTE 1013 ENGINEERING SCIENCEs 9. GAS LAWS AND ENGINE POWER NAZARIN B. NORDIN nazarin@icam.edu.my

  2. GAS LAWS Ideal Gases Gases are fluids, differing from liquids in that while liquids are practically incompressible and possess a definite volume, gases are readily compressible and can change their volume. The following are three laws which are found to be reasonably obeyed by the so-called permanent gases, e.g. oxygen and nitrogen, at temperatures in the region of room temperature. A gas which is considered to obey these laws exactly is called an ideal gas.

  3. Ideal Gas Law PV = nRT R – Universal Gas Constant = 8.315 J/(mol K) n (mol) = mass (g) / molecular mass (g/mol) Avogadro’s Number – number of molecules per mole NA = 6.02 x 1023 PV = NkT k – Boltzmann’s Constant k = R = 8.315 J/(mol K) = 1.38 x 10-23 J/K NA = 6.02 x 1023/mole

  4. Boyle’s Law – the volume of a gas is inversely proportional to the pressure applied to it when the temperature is kept constant V a 1 P Charles’s Law – the volume of a given amount of gas is directly proportional to the absolute temperature when the pressure is kept constant V a T T -absolute temperature

  5. Engine Performance Criteria Indicated Mean Effective Pressure, Pior i.m.e.p. , Pi = = i.m.e.p. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  6. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  7. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  8. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  9. Indicated Power, IP IP = Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  10. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  11. Torque, T Brake Power, BP Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  12. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  13. BP= Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  14. = BP/IP Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  15. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  16. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  17. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  18. ,(Specific fuel consumption, sfc) Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  19. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  20. Volumetric Efficiency, v Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  21. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  22. Energy Balance Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  23. Morse Test Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  24. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  25. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  26. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  27. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  28. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  29. Reciprocating Internal Combustion Engine SME 2423-2006/2007-2

  30. THANK YOU

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