Amca international january 2009 chicago il
Sponsored Links
This presentation is the property of its rightful owner.
1 / 91

AMCA International January 2009 Chicago, IL PowerPoint PPT Presentation


  • 73 Views
  • Uploaded on
  • Presentation posted in: General

AMCA International January 2009 Chicago, IL. Energy Efficiency Classification for Fans John Cermak, Ph.D., P.Eng ., M.Sc. Executive Vice President ACME Engineering and Manufacturing Corp. Fan Industry. Energy Consumption Challenge. What is Happening?. What is happening. ASHRAE

Download Presentation

AMCA International January 2009 Chicago, IL

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


AMCA InternationalJanuary 2009Chicago, IL

Energy Efficiency Classification for Fans

John Cermak, Ph.D., P.Eng., M.Sc.

Executive Vice President

ACME Engineering and Manufacturing Corp.


Fan Industry

Energy Consumption Challenge


What is Happening?

3


What is happening

ASHRAE

  • 90.1 Standard (revision 2010)

  • TC 5.1 Fans - ad hoc WG 90.1

4


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”

5


What is happening

ISO/TC 117 Fans

  • WG 11 Fan Efficiency

  • DIS 12759 Energy Classification

    for fans

6


What is happening

AMCA International active in

ASHRAE

ANSI

ISO

7


Purpose


Purpose

AMCA International supporting

Legislative bodies

Regulatorybodies

in U.S.A.

as well as in other countries

9


Purpose

Establishing ways and goals

to achieve significant energy

savings in usage of fans

10


Purpose

Making the application of fans

fitting the energy consumption

goals without making it difficult

11


Corner Stones


Corner Stones

Fan energy efficiency based

on fan total pressure

13


Corner Stones

Tool for regulative bodies

14


Corner Stones

Support fan manufacturers’

effort to improve the energy

efficiency of their products

15


Corner Stones

As much as possible keep one

series in one efficiency grade

16


Corner Stones

Fan peak total efficiency of a fan series is dependent on fan size

17


Corner Stones

Defining areas of responsibility for:

Fan manufacturer

Motor manufacturer

HVAC system designer

18


Fan Total Pressure

Why?


Total or Static?

Fan creates pressures:

dynamic (velocity)

and

static

20


Total or Static

Both pressures are also specific energies a unit of flow exerted into the air by a fan

21


Total or Static?

  • Fan is a device to create airflow as its primary function

  • The motion of the air carries

    dynamic (velocity) energy

22


Total or Static?

Fan total pressure is sum of

dynamic (velocity) pressure

and

static pressure

23


Answer

For fan selection are needed

at least two from the three fan

pressures:

totalandvelocity

staticandvelocity

totalandstatic

24


Fan Selection

25


Fan Selection

26


Fan Selection

27


Fan Selection

28


Fan Selection

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

29


Fan Selection

30


Fan Selection

31


Using Fan Discharge Energy

32


Using Discharge Energy

33


Using Discharge Energy

34


Using Discharge Energy

35


Fan Characteristics

36


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

37


Fan Energy Efficiency

38


Fan Energy Efficiency

39


Fan Energy Efficiency

40


Fan Energy Efficiency

41


Fan Energy Efficiency

42


Fan Energy Efficiency

Fan energy (total) efficiency

Fantotalenergy

Energy from motor

43


pTE

44


pTE

45


The characteristic

of the fan energy

transformation

quality is

fanpeak total efficiency

pTE

46


Fan total efficiency

changes along the

fan pressure curve

significantly

pTE

47


Fan size and pTE

48


pTE

At constant tip speed the fan

pTE of a fan Series changes

with the fan size

49


pTE and Fan Size

50


pTE and Fan Size

As a base fan

size was chosen

impeller size of

1000 mm (40”)

51


Fan Size Effect

The Size Effect includes effects

  • Reynolds number

  • changes in flow pattern

  • impact of volumetric and mechanical losses

52


Fan Size Effect

The Size Effect includes effects

  • deviations from geometrical similarity from size to size

53


Fan Size Effect

The character of the Size Effect

changes from one fan Series to

another

54


Design of FEG System

FEG = Fan Efficiency Grade


FEG System

56


FEG System

  • Grade labels in preferred numbers

    e.g. FEG 80, 71, 63 etc.

  • Layer thickness is 6%

57


Grade Label

58


Grade Label

59


Grade Label

60


Grade Label

61


Grade Label

62


Grade Label

63


Attached Conditions

Using these conditions would yield the fastest energy savings


Off Peak Load

65


Off Peak Load

66


Off Peak Load

67


Off Peak Load

68


Off Peak Load

69


Off Peak Load

70


Off Peak Load

71


Off Peak Load

72


Off Peak Load

73


Off Peak Load

74


Off Peak Load

75


Off Peak Load

76


Off Peak Load

77


Part Load

78


Part Load

79


Part Load

80


Part Load

81


Part Load

82


System Effects

Restrictions on usage of “system

effects”

83


Result

Defined Areas of Responsibility


Areas of Responsibility

Fan manufacturer

Offers fans with the highest pTE

now at least FEG 67 later 71

and direct driven units

85


Areas of Responsibility

Motor manufacturer

Offer motors with highest pEff

and smart units

86


Areas of Responsibility

HVAC system designer

Optimizes use of the selection

of the fan and the motor incl.

drive package)

87


Areas of Responsibility

What is missing?

User of HVAC

88


Questions?


Thank You


91


  • Login