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The document discusses energy usage in elevators. It begins with an introduction stating that elevator energy efficiency is becoming more important. It then covers the basics of power, energy and efficiency. Key points made include that energy can be expressed as either force times distance or power times time. The document also discusses how to calculate ideal and actual energy efficiency. It provides examples of calculating the weighted average energy usage per elevator start based on loading and travel distance data.

ENERGY is Force x Distance! Jim Bos IAEC Forum May 15, 2010 07/06/10

Introduction & Purpose ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object], 07/06/10

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

Introduction & Purpose ,[object Object],[object Object],[object Object], 07/06/10

Introduction & Purpose ,[object Object],[object Object], 07/06/10

Basics of Power, Energy and Efficiency ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object], 07/06/10

Basics of Power Watts = Volts x Amps Watts = Newton x meters/sec ( Power = Force x Speed) 07/06/10

Basics of Energy Watt-sec = Watts x sec Watts-sec = Newton x meter (Energy = Force x Distance) (Energy = Power x Time) 07/06/10

Basics of Energy 07/06/10 ,[object Object],[object Object],[object Object]

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

Hoisting Energy Flow Energy out Energy in 100 100 Basics of 100% Efficiency 07/06/10 Ideal Energy At Line At Payload Motoring Regeneration

Hoisting Energy Flow Basics of Efficiency 07/06/10

Review of Segment 2 07/06/10 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Insert picture size 130 x 85mm 100dpi

07/06/10 0 2 4 6 8 10 12 14 16 18 20 Force (kg) Distance (m) 0 -500 500 1000

07/06/10 0 2 4 6 8 10 12 14 16 18 20 0 -500 500 1000 Force (kg) Distance (m)

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

Review of Segment 3 07/06/10 Confidential | © KONE Corporation | Presentation name | Author ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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

Review of Segment 4 07/06/10 ,[object Object],[object Object],[object Object],[object Object]

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Iaec Presentation

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

11.

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

15.

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

17. 07/06/10

18. 07/06/10

19. 07/06/10

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

24.

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

28.

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?

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