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- 1. ENERGY is Force x Distance! Jim Bos IAEC Forum May 15, 2010 07/06/10
- 3. Contents / Agenda IAEC Forum May 15, 2010 1. Introduction & Purpose 2. Basics of Power, Energy and Efficiency 3. Power x Time vs. Force x Distance 4. Practical application 5. Q&A 07/06/10
- 5. Introduction & Purpose 07/06/10
- 7. Contents / Agenda IAEC Forum May 15, 2010 1. Introduction & Purpose 2. Basics of Power, Energy and Efficiency 3. Power x Time vs. Force x Distance 4. Practical application 5. Q&A 07/06/10
- 9. Basics of Power Watts = Volts x Amps Watts = Newton x meters/sec ( Power = Force x Speed) 07/06/10
- 10. Basics of Energy Watt-sec = Watts x sec Watts-sec = Newton x meter (Energy = Force x Distance) (Energy = Power x Time) 07/06/10
- 12. Hoisting Energy Flow Drive loss Motor loss Hoistway loss Regeneration Basics of Actual Efficiency 07/06/10 Drive loss Motor loss Hoistway loss At Line At Payload Motoring
- 13. Hoisting Energy Flow Energy out Energy in 100 100 Basics of 100% Efficiency 07/06/10 Ideal Energy At Line At Payload Motoring Regeneration
- 14. Hoisting Energy Flow Basics of Efficiency 07/06/10
- 16. Contents / Agenda IAEC Forum May 15, 2010 1. Introduction & Purpose 2. Basics of Power, Energy and Efficiency 3. Power x Time vs. Force x Distance 4. Practical application 5. Q&A 07/06/10
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- 20. 07/06/10 0 2 4 6 8 10 12 14 16 18 20 Force (kg) Distance (m) 0 -500 500 1000
- 21. 07/06/10 0 2 4 6 8 10 12 14 16 18 20 0 -500 500 1000 Force (kg) Distance (m)
- 22. 07/06/10 0 2 4 6 8 10 12 14 16 18 20 0 -500 500 1000 Force (kg) Distance (m)
- 23. A = Acceleration (m/sec 2 ) D = Travel Distance (meters) i = Imbalance (kilograms) J = Jerk (m/sec 3 ) M = Mass of the moving system, primarily the weight of the moving system …… divided by the acceleration of gravity plus the rotating mass V = Velocity (m/sec). It is the lesser of 1.) Rated speed or 2.) Maximum speed possible within the travel distance, which is: 07/06/10
- 25. Contents / Agenda IAEC Forum May 15, 2010 1. Introduction & Purpose 2. Basics of Power, Energy and Efficiency 3. Power x Time vs. Force x Distance 4. Practical application 5. Q&A 07/06/10
- 26. Hoisting Energy Flow 07/06/10
- 27. The weighted averages for energy per elevator start in this example: Load = 7.7% of capacity Travel = 50.1% of total travel 07/06/10
- 29. Contents / Agenda IAEC Forum May 15, 2010 1. Introduction & Purpose 2. Basics of Power, Energy and Efficiency 3. Power x Time vs. Force x Distance 4. Practical application 5. Q&A 07/06/10
- 30. Questions?