ANSI AMCA 207-2017 Fan System Efficiency and Fan System Input Power Calculation.pdf

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1、ANSI/AMCA Standard 207-17An American National StandardApproved by ANSI on April 17, 2017Air Movement and Control Association InternationalAMCA Corporate Headquarters30 W. University Drive, Arlington Heights, IL 60004-1893, USAcommunicationsamca.org nPh: +1-847-394-0150 nwww.amca.org 2016 AMCA Intern

2、ational and ASHRAEFan System Efficiency and Fan System Input Power CalculationSTANDARDANSI/AMCA Standard 207-17 Fan System Efficiency and Fan System Input Power Calculation Air Movement and Control Association International 30 West University Drive Arlington Heights, Illinois 60004 AMCA Publications

3、 Authority AMCA Standard 207-17 was adopted by the membership of the Air Movement and Control Association International Inc. on April 12, 2017. It was approved by the American National Standards Institute on April 17, 2017. Copyright 2017 by the Air Movement and Control Association International Inc

4、. All rights reserved. Reproduction or translation of any part of this work beyond that permitted by Sections 107 and 108 of the United States Copyright Act without the permission of the copyright owner is unlawful. Requests for permission or further information should be addressed to the executive

5、director, Air Movement and Control Association International Inc. at 30 West University Drive, Arlington Heights, IL 60004-1893 U.S. Objections The Air Movement and Control Association (AMCA) International Inc. will consider and take action upon all written complaints regarding its standards, certif

6、ication programs or interpretations thereof. For information on procedures for submitting and handling complaints, write to AMCA International 30 West University Drive Arlington Heights, IL 60004-1893 U.S.A. European AMCA Avenue des Arts, numro 46 Bruxelles (1000 Bruxelles) Asia AMCA Sdn Bhd No. 7,

7、Jalan SiLC 1/6, Kawasan Perindustrian SiLC Nusajaya, Mukim Jelutong, 79200 Nusajaya, Johor Malaysia Disclaimer AMCA uses its best efforts to produce publications for the benefit of the industry and the public in light of available information and accepted industry practices. However, AMCA does not g

8、uarantee, certify or assure the safety or performance of any products, components or systems tested, designed, installed or operated in accordance with AMCA publications or that any tests conducted under its publications will be non-hazardous or free from risk. Review Committee Michael Brendel (Chai

9、r) Lau Industries Anthony Breen Nuaire Ltd. Tim Mathson Greenheck Fan Corporation Armin Hauer ebm-papst Inc. Dustin Meredith Trane Fernando A. Ruiz Equipos Electromecanicos, S.A de C.V. Florian Braun Ziehl-Abegg, Inc. Hesham Morten Gabr Multi-Wing John Murphy Jogram, Inc. Kai Aschenbach Ziehl-Abegg

10、SE Kim Osborn Temtrol- CES Group Logan Mikesell Vostermans Ventilation, Inc. Marcel Kamutzki Daltec Canadian Buffalo Mark Bublitz The New York Blower Company Rad Ganesh Twin City Fan Steve Dikeman AcoustiFLO LLC Tom Kuli Robinson Fans William Howarth Illinois Blower, Inc. Helmuth Glatt Nidec Motor C

11、orp Ola Wettergren Systemair Mfg. Inc. Seth Blahnik Carnes Company Michael Danielsson MacroAir Hamid Massali Systemair Nicholas Ang Dongguan Wolter Chemco Ventilation Ltd. Xie Yongheng Kruger Ventilation Emmanuel Agamloh Advanced Energy Young Han Enervex Inc. Nicholas Howe Carnes Company Yannick App

12、lasamy Aldes Yongning Chen Zhejiang Yilda Ventilator Co, Ltd. Heikki Stenberg Flakt Woods Martijn van Elburg VHK Aron Reid The New York Blower Company Jeff Crenshaw Ziehl-Abegg, Inc. Joe Brooks AMCA International Staff Contents 1. Purpose . 1 2. Scope 1 3. Definitions and Symbols . 1 3.1 Definitions

13、 1 3.2 Symbols . 2 4. Fan System Energy Calculations (General) . 2 4.1 Components 2 4.2 System integration . 6 5. Reporting of Results . 7 Annex A Motor Efficiencies (Normative) . 8 Annex B Motor (with VFD) Performance Constants (Normative) 12 Annex C Variable Frequency Drive (VFD) Performance Const

14、ants (Normative) . 14 C1. VFD Performance Constants (hp capacity) 14 C2. VFD Performance Constants (kW capacity) . 15 Annex D Motor (DOL) Performance Constants (Normative) 16 Annex E Example Calculations (Informative) 18 E.1 Worked example for a housed centrifugal fan with belt transmission operatin

15、g DOL 18 Annex F Statement of Uncertainty (Informative) 21 Annex G References . 22 G.1 Normative References 22 G.2 Informative References . 22 AMCA Publication 207 | 1 Fan System Efficiency and Fan System Input Power Calculation 1. Purpose This standard provides a method to estimate the input power

16、and overall efficiency of an extended fan system. An extended fan system is composed of a fan and an electric motor but may also include a transmission and a motor controller. While direct measurement of fan system performance is preferred, the large number of fan system configurations often makes t

17、esting impractical. This standard offers a standardized method to estimate fan system performance by modeling commonly used components. Calculations reported in accordance with this standard offers fan users a tool to compare alternative fan system configurations in a consistent and uniform manner.

18、This document does not provide selection guidance. Users must assure that selected components have sufficient capacity and are configured to produce the desired results. 2. Scope The scope of this standard includes all electric motor driven fan systems that use a specific combination of components a

19、s defined below: 1. Fan airflow performance tested in accordance with ANSI/AMCA Standard 210 1 ANSI/AMCA Standard 230 2, ANSI/AMCA Standard 260 3 or ISO Standard 5801 4 or rated in accordance with AMCA Publication 211 5. 2. Polyphase induction motors within the scope of EPCA 6, IEC 60034-30-1 7, or

20、GB 18613 8. Other types of motors are explicitly excluded. 3. Pulse-width modulated variable frequency drives (VFDs). 4. Mechanical power transmissions that use V-belts, synchronous belts, or flexible couplings. 3. Definitions and Symbols For the purpose of this standard, the definitions, units of m

21、easure and symbols in this section apply. Definitions for fan pressures and efficiencies are found in the standards referenced in Section 2. 3.1 Definitions 3.1.1 Fan system A fan product that includes all appurtenances, accessories, motors, drives and controllers necessary or applied to the fan. 3.

22、1.2 V-belt power transmission Drive belts having a substantially trapezoidal cross section that uses sheaves (pulleys) having smooth contact surfaces. Conventional V-belts have a constant cross section along their length, while notched V-belts (also known as cogged V-belts) have slots running perpen

23、dicular to their length. The slots reduce bending resistance and offer improved efficiency over conventional V-belts. This standard does not account for this improved efficiency. 3.1.3 Synchronous belt power transmission Drive belts having a substantially rectangular cross section that contains teet

24、h that engage corresponding teeth on the sheaves (pulleys) resulting in no-slip power transmission. These belts are sometimes called timing or toothed belts. AMCA Publication 207 | 2 3.1.4 Flexible coupling power transmission A coupling that is used to transmit torque from one shaft to another in a

25、coaxial configuration where the two shafts are at the same speed. A flexible coupling allows for minor shaft misalignment. 3.2 Symbols Symbol Description SI Unit I-P Unit B Transmission efficiency dimensionless e Overall fan system total efficiency dimensionless es Overall fan system static efficien

26、cy dimensionless m Motor efficiency mc Combined motor control and motor efficiency dimensionless R Nominal regulated motor efficiency dimensionless S Fan static efficiency dimensionless T Fan total efficiency dimensionless Hco Output capacity of VFD kW hp Hi Fan input power kW hp Hm Motor output pow

27、er kW hp Hmo Motor nameplate output power kW hp Lc Motor controller load ratio dimensionless Lm Motor load ratio dimensionless N Fan speed rpm rpm Wc Fan system input power* kW kW n Number of motor poles dimensionless nm Number of motors controlled by the VFD dimensionless * Fan system input power,

28、equivalent to motor controller input power or motor input power, depending on system configuration 4. Fan System Energy Calculations (General) This section describes the calculations required to estimate the extended fan system input power and extended fan system efficiency. Calculations start with

29、the fan performance and then progress through each fan system component. 4.1 Components 4.1.1 Fan Fan input power, Hi, is the starting point for the system calculation. Fan performance shall be determined in accordance with an accepted performance standard such as ANSI/AMCA Standard 210, ANSI/AMCA S

30、tandard 230, ANSI/AMCA Standard 260 or ISO 5801. The fan laws shall be used to determine fan performance at operating conditions other than those tested. For calculation of the fan system input power (Wc), the following performance variables must be available for the desired fan operating point: Hi

31、Fan input (shaft) power in kW (hp) To calculate the overall fan system efficiency, the following must also be available: s Fan static efficiency AMCA Publication 207 | 3 or T Fan total efficiency 4.1.2 Power transmission The power transmission is a component of the fan system that transfers power fr

32、om the motor to the fan, most often involving a speed change. The transmission is not present in direct drive configurations where the motor is directly coupled to the fan shaft or impeller. 4.1.2.1 V-belt power transmission The efficiency of a V-belt transmission is calculated as nullnullnull0.96nu

33、llnullnullnullnullnullnull.nullnullnullnull.nullnullSInullnullnull 0.96 nullnullnullnullnullnullnull.nullnullnull.nullnullI-P 4.1.2.2 Synchronous belt power transmission The efficiency of a synchronous belt transmission is calculated as nullnullnull1 nullnull,nullnullnull0.94 1 nullnull null nullnul

34、lnull5 nullnull,nullnullnull 0.01 nullnullnull0.93 SI nullnullnull5 nullnull,nullnullnull0.98 or nullnullnull1.34 nullnull,nullnullnull0.94 1.34 nullnull null nullnullnull6.7 nullnull,nullnullnull 0.00746 nullnullnull0.93 I-P nullnullnull6.7 nullnull,nullnullnull0.98 4.1.2.3 Flexible coupling power

35、transmission The efficiency of a flexible shaft coupling is B = 0.98 4.1.2.4 No power transmission If the motor shaft is rigidly connected to the fan impeller, then nullnullnull1 4.1.3 Motor and controller The following sections detail the calculations for various motor and motor/controller combinat

36、ions. Fan systems incorporating components other than those described here are not covered by this standard. AMCA Publication 207 | 4 4.1.3.1 Regulated polyphase induction motors controlled by a VFD Calculations presented here are limited to certain regulated polyphase induction motors driven by pul

37、se-width modulated VFDs. Applicable motors include those regulated within the scope of EPCA, IEC 60034-30 or GB 18613. The following motor and VFD parameters must be known: Hmo Motor nameplate output power n Number of motor poles TEFC or ODP Motor enclosure Hco VFD output capacity The motor and vari

38、able frequency drive efficiencies are combined into a single value. For purposes of this standard, the output capacity of the VFD is defined as the largest motor the VFD is capable of driving. VFD output capacity will generally match the rated output power of the motor (Hco = Hmo). The calculation a

39、llows for a VFD with output capacity greater than that of the driven motor (e.g., a 7.5 hp capacity VFD driving a 5 hp motor). This accommodates a situation in which the driven motor is operated at a load ratio greater than one. These calculations assume that the VFD is operating with a constant V/H

40、z output, and they should result in a conservative estimate. There are other algorithms that can result in lower input power. The motor output power at the fan operating point is calculated by nullnullnullnullnullnullnullwhere Hi is the fan input power and B is the transmission efficiency calculated

41、 from Section 4.1.2. The combined motor and VFD efficiency is calculated in the following steps. First, the motor efficiency is calculated as nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull where B is the nominal motor efficiency obtained from Table A1 (EPCA), Table A2 (

42、IEC 63034-30-1) or Table A3 (GB 18613), depending on the applicable motor configuration. Lm is the motor load ratio calculated by nullnullnullnullnullnullnullnullnull0 null nullnullnull 1.5null and a and b are motor coefficients obtained from Table B1 (motor output power rating in hp) or Table B2 (m

43、otor output power rating in kW), depending on the applicable motor configuration. The coefficient c is calculated as nullnull1nullnullnullnull1The VFD load ratio is based on the required VFD output (motor input) and is calculated as nullnullnullnullnullnullnullnullnullnullwhere Hco is the output cap

44、acity of the VFD. AMCA Publication 207 | 5 The combined motor and VFD efficiency is calculated by nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull The coefficients d, e and f are found in Table C1 (hp) or Table C2 (kW) for the appropriate VFD capacity. In situations where

45、 a single VFD is used to control several identical motors operating in parallel, the load ratio for the VFD is replaced by LnullnullnnullHnullnullHnullnullwhere nm is the number of motors controlled by the VFD. Advisory note: The VFD and motor models used for this calculation are based on constant V

46、/Hz operation and pure sine wave power. In practice, other control settings are sometimes adopted to improve energy efficiency or to better match VFD output to actual fan operating conditions. This document does not provide selection guidance. Users must assure that selected components have sufficie

47、nt capacity and are configured to produce the desired results. The purpose here is to provide a consistent calculation procedure for comparing multiple fan systems when actual test data are not available. The output capacity of the VFD must equal or exceed the required input to the motor. 4.1.3.2 Re

48、gulated polyphase induction motors powered DOL (Direct on line) Calculations presented here are limited to certain regulated polyphase induction motors directly driven from the line voltage and line frequency. Applicable motors include those regulated within the scope of EPCA, IEC 60034-30 or GB 186

49、13. The following motor and component parameters must be known: Hmo Motor nameplate output power n Number of motor poles TEFC or ODP Motor enclosure TEAO motors are not covered by this standard. The motor output power at the fan operating point is calculated by nullnullnullnullnullnullnullThe motor efficiency is calculated by nullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnullnull where R is the nominal motor efficiency obtained from Table A1 (EPCA), Table A2 (IEC 60034-30) or Table A3 (GB- 18613), dep