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AMCA International Technical Seminar 2009

AMCA International Technical Seminar 2009. Energy Efficiency Classification for Fans John Cermak, Ph.D., P.Eng ., M.Sc. Executive Vice President ACME Engineering and Manufacturing Corp.

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AMCA International Technical Seminar 2009

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  1. AMCA InternationalTechnical Seminar 2009 Energy Efficiency Classification for Fans John Cermak, Ph.D., P.Eng., M.Sc. Executive Vice President ACME Engineering and Manufacturing Corp.

  2. The Air Movement and Control Association International (AMCA), has met the standards and requirements of the Registered Continuing Education Providers Program. Credit earned on completion of this program will be reported to the RCEPP. A certificate of completion will be issued to each participant. As such, it does not include content that may be deemed or construed to be an approval or endorsement by NCEES or RCEPP.

  3. Learning Objectives Learn about the current actions in fan industry leading to immediate and long term improvement in energy consumption by fans Understand the choices of the corner stones for building the AMCA Int’l initiative in ASHRAE and ISO Learn about importance of fan total pressure for finding energy savings Understand how fan selection impacts energy consumption of fans Understand how knowledge of the fan discharge energy contributes to successful fan selection from energy consumption point Learn about standardization of fan energy efficiency for better usage of energy by fans

  4. Fan Industry Energy Consumption Challenge

  5. What is Happening? 5

  6. What is happening ASHRAE • 90.1 Standard (revision 2010) • TC 5.1 Fans - ad hoc WG 90.1 6

  7. What is happening AMCA International • Mid-year and annual meetings 08 • Fan Committee – SC for AMCA 205 • AMCA Standard 205 “Energy Efficiency Classification for Fans” 7

  8. What is happening ISO/TC 117 Fans • WG 11 Fan Efficiency • DIS 12759 Energy Classification for fans 8

  9. What is happening AMCA International active in ASHRAE ANSI ISO 9

  10. Purpose

  11. Purpose AMCA International supporting Legislative bodies Regulatorybodies in U.S.A. as well as in other countries 11

  12. Purpose Establishing ways and goals to achieve significant energy savings in usage of fans 12

  13. Purpose Making the application of fans fitting the energy consumption goals without making it difficult 13

  14. Corner Stones

  15. Corner Stones Fan energy efficiency based on fan total pressure 15

  16. Corner Stones Tool for regulative bodies 16

  17. Corner Stones Support fan manufacturers’ effort to improve the energy efficiency of their products 17

  18. Corner Stones As much as possible keep one series in one efficiency grade 18

  19. Corner Stones Fan peak total efficiency of a fan series is dependent on fan size 19

  20. Corner Stones Defining areas of responsibility for: Fan manufacturer Motor manufacturer HVAC system designer 20

  21. Fan Total Pressure Why?

  22. Total or Static? Fan creates pressures: dynamic (velocity) and static 22

  23. Total or Static Both pressures are also specific energies a unit of flow exerted into the air by a fan 23

  24. Total or Static? • Fan is a device to create airflow as its primary function • The motion of the air carries dynamic (velocity) energy 24

  25. Total or Static? Fan total pressure is sum of dynamic (velocity) pressure and static pressure 25

  26. Answer For fan selection are needed at least two from the three fan pressures: totalandvelocity staticandvelocity totalandstatic 26

  27. Fan Selection 27

  28. Fan Selection 28

  29. Fan Selection 29

  30. Fan Selection 30

  31. Fan Selection • Matching the pressure drop across the system against fan static pressure does not give the correct flow, fan size and power 31

  32. Fan Selection 32

  33. Fan Selection 33

  34. Using Fan Discharge Energy 34

  35. Using Discharge Energy 35

  36. Using Discharge Energy 36

  37. Using Discharge Energy 37

  38. Fan Characteristics 38

  39. Fan Energy Efficiency • Fan is a device creating air flow and transferring energy from the motor into the air • Fan Total Pressure is the total energy exerted into air by fan 39

  40. Fan Energy Efficiency 40

  41. Fan Energy Efficiency 41

  42. Fan Energy Efficiency 42

  43. Fan Energy Efficiency 43

  44. Fan Energy Efficiency 44

  45. Fan Energy Efficiency Fan energy (total) efficiency Fantotalenergy Energy from motor 45

  46. pTE 46

  47. pTE 47

  48. The characteristic of the fan energy transformation quality is fanpeak total efficiency pTE 48

  49. Fan total efficiency changes along the fan pressure curve significantly pTE 49

  50. Fan size and pTE 50

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