ASHRAE 200-2015 Methods of Testing Chilled Beams.pdf

1、ANSI/ASHRAE Standard 200-2015Methods of TestingChilled BeamsApproved by ASHRAE on February 27, 2015, and by the American National Standards Institute on March 2, 2015.ASHRAE Standards are scheduled to be updated on a five-year cycle; the date following the Standard number is the year ofASHRAE approv

2、al. The latest edition of an ASHRAE Standard may be purchased on the ASHRAE website (www.ashrae.org)or from ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: ordersashrae.org. Fax: 678-539-2129. Telephone: 404-636-8400 (worldwide) or toll free 1-800-527-4723 (for order

3、s in US and Canada). For reprintpermission, go to www.ashrae.org/permissions. 2015 ASHRAE ISSN 1041-2336SPECIAL NOTEThis American National Standard (ANS) is a national voluntary consensus Standard developed under the auspices of ASHRAE. Consensus is definedby the American National Standards Institut

4、e (ANSI), of which ASHRAE is a member and which has approved this Standard as an ANS, as“substantial agreement reached by directly and materially affected interest categories. This signifies the concurrence of more than a simple majority,but not necessarily unanimity. Consensus requires that all vie

5、ws and objections be considered, and that an effort be made toward their resolution.”Compliance with this Standard is voluntary until and unless a legal jurisdiction makes compliance mandatory through legislation. ASHRAE obtains consensus through participation of its national and international membe

6、rs, associated societies, and public review.ASHRAE Standards are prepared by a Project Committee appointed specifically for the purpose of writing the Standard. The ProjectCommittee Chair and Vice-Chair must be members of ASHRAE; while other committee members may or may not be ASHRAE members, allmus

7、t be technically qualified in the subject area of the Standard. Every effort is made to balance the concerned interests on all Project Committees. The Senior Manager of Standards of ASHRAE should be contacted fora. interpretation of the contents of this Standard,b. participation in the next review o

8、f the Standard,c. offering constructive criticism for improving the Standard, ord. permission to reprint portions of the Standard.DISCLAIMERASHRAE uses its best efforts to promulgate Standards and Guidelines for the benefit of the public in light of available information and acceptedindustry practic

9、es. However, ASHRAE does not guarantee, certify, or assure the safety or performance of any products, components, or systemstested, installed, or operated in accordance with ASHRAEs Standards or Guidelines or that any tests conducted under its Standards or Guidelineswill be nonhazardous or free from

10、 risk.ASHRAE INDUSTRIAL ADVERTISING POLICY ON STANDARDSASHRAE Standards and Guidelines are established to assist industry and the public by offering a uniform method of testing for rating purposes, bysuggesting safe practices in designing and installing equipment, by providing proper definitions of

11、this equipment, and by providing other informationthat may serve to guide the industry. The creation of ASHRAE Standards and Guidelines is determined by the need for them, and conformanceto them is completely voluntary.In referring to this Standard or Guideline and in marking of equipment and in adv

12、ertising, no claim shall be made, either stated or implied,that the product has been approved by ASHRAE.ASHRAE Standard Project Committee 200Cognizant TC: TC 5.3, Room Air DistributionSPLS Liaison: Srinivas KatipamulaJerry M. Sipes, Chair* Jonathon R. Giles* Steven J. OBrien*Kenneth J. Loudermilk, V

13、ice Chair* Daniel L. Hahne* Mary OpalkaMarc Duy-Minh Neufcourt, Secretary* Michael J. Holland* R. Gaylon Richardson*Darren S. Alexander* David A. John* Robert H. Thompson*Michael Bejrowski* Michael J. Langton*Dan W. Dupaix Andrey Livchak* Denotes members of voting status when the document was approv

14、ed for publicationASHRAE STANDARDS COMMITTEE 20142015Richard L. Hall, Chair James W. Earley, Jr. Mark P. ModeraDouglass T. Reindl, Vice-Chair Steven J. Emmerich Cyrus H. NasseriJoseph R. Anderson Patricia T. Graef Heather L. PlattJames Dale Aswegan Rita M. Harrold Peter SimmondsCharles S. Barnaby Ad

15、am W. Hinge Wayne H. Stoppelmoor, Jr.Donald M. Brundage Srinivas Katipamula Jack H. ZarourJohn A. Clark Debra H. Kennoy Julia A. Keen, BOD ExOWaller S. Clements Malcolm D. Knight Bjarne Wilkens Olesen, CODavid R. Conover Rick A. LarsonJohn F. Dunlap Arsen K. MelkovStephanie C. Reiniche, Senior Manag

16、er of StandardsCONTENTSANSI/ASHRAE Standard 200-2015,Methods of Testing Chilled BeamsSECTION PAGEForeword .21 Purpose.22 Scope23 Definitions and Symbols24 Instrumentation and Facilities .35 Test Methods 56 Reporting.107 Normative References 13Informative Annex A: Governing Equations for Chilled Beam

17、s.14Informative Annex B: Primary Airflow Measurement.16Informative Annex C: Electric Heated Person Simulators.18Informative Annex D: Radiant Shielded Temperature Sensor 20Normative Annex E: Measurement of Induced Airflow Rates and Calculation of Induction Ratios.21NOTEApproved addenda, errata, or in

18、terpretations for this standard can be downloaded free of charge from the ASHRAEWeb site at www.ashrae.org/technology. 2015 ASHRAE1791 Tullie Circle NE Atlanta, GA 30329 www.ashrae.org All rights reserved.ASHRAE is a registered trademark of the American Society of Heating, Refrigerating and Air-Cond

19、itioning Engineers, Inc.ANSI is a registered trademark of the American National Standards Institute.2 ANSI/ASHRAE Standard 200-2015(This foreword is not part of this standard. It is merelyinformative and does not contain requirements necessaryfor conformance to the standard. It has not been pro-cess

20、ed according to the ANSI requirements for a standardand may contain material that has not been subject topublic review or a consensus process. Unresolved objec-tors on informative material are not offered the right toappeal at ASHRAE or ANSI.)FOREWORDASHRAE Standard 200 was written at the request of

21、 the Air-Conditioning, Heating, and Refrigeration Institute (AHRI) toprovide test instrumentation and facilities, installation meth-ods, and procedures for determining the capacity and relatedperformance of chilled beams. Procedures provided in thisstandard apply to active chilled beams.This standar

22、d was prepared in cooperation with the AHRIChilled Beams Section, and it is referenced in AHRI Standards1240 (I-P) and 1241 (SI), Performance Rating of ActiveChilled Beams, as the method of test for the AHRI ActiveChilled Beam (ACB) certification program.This standard was prepared by ASHRAE Standard

23、 Proj-ect Committee (SPC) 200. The cognizant technical committeeis ASHRAE TC 5.3, Room Air Distribution.1. PURPOSE1.1 To define laboratory methods of testing chilled beams todetermine performance.2. SCOPE2.1 Defines laboratory methods of testing chilled beams todetermine performance.2.2 Specifies te

24、st instrumentation, facilities, installation meth-ods, and procedures for determining the performance ofchilled beams.3. DEFINITIONS AND SYMBOLS3.1 Definitions Unless otherwise specified, refer to defini-tions listed on the ASHRAE Terminology website.active chilled beam: an air induction and diffusi

25、on device thatintroduces and conditions air for the purpose of temperatureand/or humidity control. Primary air is delivered through aseries of nozzles, which induces and conditions secondary airthrough a unit-mounted coil.induced air: The flow of secondary air into a chilled beamresulting from a pre

26、ssure differential within the beam and cir-culating through the coil.octave band: a frequency band of sound with an upper limitthat is twice the frequency of the lowest limit. The center fre-quency of an octave band is the geometric mean of its upperand lower limits. Table 1 shows octave bands 1 thr

27、ough 8.passive chilled beam: a cooled element or coil fixed in,above, or below a ceiling that sensibly cools through naturalconvection using buoyancy-driven airflow. The cooling mediain the coil is water.radiation shielded sensor: resistive temperature devices(RTDs) designed to measure dry-bulb air

28、temperatures are sus-ceptible to radiation heat transfer, and therefore the total tem-perature measured is the sum of the air temperature and theradiation component generated by a heat source or heat sinkwhere present. Radiant shields must be attached to the RTD tominimize the effect of radiant heat

29、 transfer. The radiant shieldmust be designed such that the incoming radiation is deflectedwhile not obstructing air currents. The maximum surfaceemissivity for the shield is 0.09. The shield must be made of athin conductive film or metal with high thermal conductivitygreater than 150 W/mK. The insi

30、de of the shield must bedesigned to absorb incident radiation that may enter the shieldthrough air vents, and interior emissivity must be greater than0.75. (See Informative Annex D for more information.)sound power: in a specified frequency band, the rate at whichsound energy is radiated by a noise

31、source, expressed in watts(W).sound power level (Lw): ten times the logarithm to the baseten of the ratio of the sound power radiated by the source to areference sound power, expressed in decibels (dB). The refer-ence sound power used in this standard is 10 to 12 W.sound pressure: in a specified fre

32、quency band, a fluctuatingpressure superimposed on the static pressure by the presenceof sound.sound pressure level (Lp): twenty times the logarithm to thebase ten of the ratio of the sound pressure radiated by thenoise source under test to a reference sound pressure of 20micropascals, expressed in

33、decibels (dB).3.2 SymbolsAfcoil-free cross-sectional area perpendicular todirection of induced airflow, ft2(m2)a empirical coefficient (different for I-P and SI units)empirical coefficient (different for I-P and SI units)b empirical coefficient (different for I-P and SI units)bscenter distance betwe

34、en thermal simulators(between 4 and 6 ft 1.2 and 1.8 m)c empirical coefficient (different for I-P and SI units) www.ashrae.org/resources-publications/free-resources/ashrae-terminologyTABLE 1 Octave Band Center FrequenciesOctave Band Center Frequency, Hz1632 1253 2504 5005 10006 20007 40008 8000aANSI

35、/ASHRAE Standard 200-2015 3cpaspecific heat of air, Btu/(lbF) J/(kgK)cpwspecific heat of water (liquid media), Btu/(lbF)J/(kgK)K coil heat-transfer coefficient, Btu/h/(ft2F)J/(kgK)coil heat-transfer coefficient times coil area, Ka,Btu/h/F (W/K)kaltcorrection factor for coil heat transfer at differen

36、televation above sea level, nondimensionalKininduction coefficient, qi/qp, nondimensionalLpsound pressure level, dBLwsound power level, dBlrtest room length, ft (m)mimass flow rate of induced air, lbm/h (kg/s)mpmass flow rate of primary air, lbm/h (kg/s)mwmass flow rate of water (liquid media), lb/h

37、 (kg/s)n empirical coefficient or exponent (different for I-Pand SI units)n1 empirical coefficient (different for I-P and SI units)n2 empirical coefficient (different for I-P and SI units)nrnumber of thermal simulators for heat balance,nondimensionalpbartest room barometric pressure, psi (Pa)ptestte

38、st room static pressure, psi (Pa)P chilled-beam total cooling capacity, Pa+ Pb,Btu/h (W)Paprimary air cooling capacity, Btu/h (W)Psheating contribution from thermal simulators, WhPwwater-coil cooling capacity, Btu/h (W)qpprimary airflow rate, cfm (L/s)qwwater flow rate, gal/min (L/s)r cumulative err

39、or, %tw1water temperature entering coil, F (C)tw2water temperature exiting coil, F (C)tatest room ambient air temperature, F (C)tctest room inside ceiling surface temperature,F (C)tdproom dew-point temperature, F (C)tereturn air temperature, F (C)tftest room inside floor surface temperature, F (C)ts

40、temperature of the supply air leaving the device,F (C)ti1induced air temperature entering cooling coil,F (C)ti2inducedairtemperatureexitingcoolingcoil,F(C)tpprimary air temperature, F (C)traverage induced room air temperature, F (C)tsw1,2,3,4test room inside wall surface temperature(walls 1 to 4), F

41、 (C)t temperature difference between induced air (tr) andmean water temperature ( ), F (C)mean water temperature, tw1+ 0.5(tw2 tw1)tpinduced air to primary air temperature differential,(tr tp), F (C)twwater temperature rise, F (C)twdifference between entering and exiting watertemperature (tw2 tw1),

42、F (C)iinduced air density, lbm/ft3(kg/m3)pprimary air density, lbm/ft3(kg/m3)ssupply (or discharge) air density, lbm/ft3(kg/m3) velocity of air passing through water coil, fpm (m/s) water velocity in water coil, measured in crosssection of the coil pipe, fpm (m/s)4. INSTRUMENTATION AND FACILITIES4.1

43、 All instruments shall have been calibrated in the range ofuse within the past year to a NIST-traceable or equivalent orga-nization standard.4.2 Temperature and moist air properties measuring instru-ments shall meet the requirements of ASHRAE Standard41.11and ASHRAE Standard 41.6 and the following s

44、ubsec-tions.4.2.1 Accuracy of the temperature measuring and moist airproperties instruments shall be within the following limits:Air temperature 0.2F (0.1C)Water temperature 0.2F (0.1C)Temperature differential 0.1F (0.05C)(sensors calibrated as a pair)Room dew-point temperature 0.1F (0.05C)4.3 Press

45、ure measuring instruments shall meet the require-ments of ANSI/ASHRAE Standard 41.32and the require-ments of Section 4.3.1.4.3.1 For air pressure, the maximum scale intervals shallnot be greater than the characteristics listed below for theaccompanying range of pressure indicating device.MaximumRang

46、e Scale Interval0.004 to 0.10 in. 0.001 in.(1.0 to 25 Pa) (0.25 Pa)0.10 to 1.00 in. 0.010 in.(25 to 250 Pa) (2.5 Pa)1.00 to 2.00 in. 0.020 in.(250 to 500 Pa) (5.0 Pa)2.00 in. 0.100 in.(500 Pa) (25 Pa)Ktt4 ANSI/ASHRAE Standard 200-20154.3.2 Calibrations standards shall be used as indicated inthe foll

47、owing subsections.4.3.2.1 For instruments with the range 0.005 to 0.100 in. wc(1.25 to 25 Pa), a micromanometer or other instrument cali-brated to 0.0005 in. wc (0.125 Pa) shall be used.4.3.2.2 For instruments with the range 0.1 to 2.0 in. wc(25 to 500 Pa), a micromanometer or other instrument cali-

48、brated to 0.01 in. wc (2.5 Pa) shall be used.4.3.2.3 For instruments with a range greater than 2.0 in. wc(500 Pa), a manometer or other instrument calibrated to 0.1in. wc (25 Pa) shall be used.4.3.3 Barometric Pressure. The barometric pressure shallbe obtained by means of a barometer located in the

49、generaltest area and have accuracy within 0.05 in. Hg (169 Pa).4.3.4 For water pressure measurement, use ASHRAE Stan-dard 41.3.24.4 Primary Airflow Measurement4.4.1 Airflow meters shall have an accuracy of 5.0% ofprimary airflow reading.4.4.2 The device for airflow measurement shall be cali-brated to provide the accuracies listed in Section 4.3.1 (moreinformation on airflow measurement methods is located inInformative Annex B).4.4.3 Airflow measurement devices shall be checked atinterv