1、ANSI/ASHRAE Standard 164.3-2015Method of Test forCommercial andIndustrial IsothermalHumidifiersApproved 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
2、 number is the year ofASHRAE approval. The latest edition of an ASHRAE Standard may be purchased on the ASHRAE website (www.ashrae.org) orfrom 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
3、toll free 1-800-527-4723 (for orders in US and Canada). For reprint permission,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 A
4、merican National Standards Institute (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 unanimi
5、ty. Consensus requires that all views 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 i
6、ts national and international members, 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 o
7、r may not be ASHRAE members, allmust 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.
8、 participation in the next review of 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 infor
9、mation and acceptedindustry practices. 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 Guidelin
10、eswill be nonhazardous or free from 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,
11、by providing proper definitions of 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
12、 in marking of equipment and in advertising, no claim shall be made, either stated or implied,that the product has been approved by ASHRAE.ASHRAE Standards Project Committee 164.3Cognizant TC: TC 5.11, Humidifying Equipment SPLS Liaison: Steven F. BruningPatricia T. Graef, Chair* Bruce Billedeaux* B
13、yron F. Horak*Gary Berlin, Vice Chair* Eric L. Brodsky* Larry J. Hughes*Daryl M. Stauffer, Secretary* James M. Bucholtz* Nicholas M. Lea*David M. Baird* Dwight H. Heberer* Roger M. Pasch* Denotes members of voting status when the document was approved for publicationASHRAE STANDARDS COMMITTEE 201420
14、15Richard 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 Adam W. Hinge Wayne H. Stoppelmoor, Jr.Donald M. Brun
15、dage 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 Manager of Standards ASHRAE (www.ashrae.org). For person
16、al use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.CONTENTSANSI/ASHRAE Standard 164.3-2015,Method of Test for Commercial and Industrial Isothermal HumidifiersSECTION PAGEForeword .21 Purpose.22
17、 Scope23 Definitions .24 Units of Measurement.25 Instruments and Methods of Measurement.26 Equipment and Setup37 Test Procedures38 Calculations.59 Normative References 5Informative Annex A: Informative References.5NOTEApproved addenda, errata, or interpretations for this standard can be downloaded f
18、ree 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-Conditioning Engineers, Inc.ANSI is a registered tradem
19、ark of the American National Standards Institute. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.2 ANSI/ASHRAE Standard 164.3-2015(This foreword is not pa
20、rt of this standard. It is merelyinformative and does not contain requirements necessaryfor conformance to the standard. It has not been pro-cessed according to the ANSI requirements for a standardand may contain material that has not been subject topublic review or a consensus process. Unresolved o
21、bjec-tors on informative material are not offered the right toappeal at ASHRAE or ANSI.)FOREWORDThis standard provides rules for the testing of isothermalhumidifiers for commercial applications. It was prepared byASHRAE Standard Project Committee SPC 164.3. The cogni-zant technical committee is ASHR
22、AE TC 5.11.The purpose of this standard is to provide a uniformmethod for testing in a laboratory environment. Although themethod of test originated in ARI Standard 640, PerformanceRating Industrial and Commercial Humidifiers, the committeehas developed this separate method of test to be used inde-p
23、endently of the ARI rating standard so manufacturers, speci-fiers, installers, and users of industrial and commercialhumidifiers can test can test a humidifiers capacity under avariety of conditions with uniform results.ASHRAE Standard 41.7-1984 (RA 2006), Method of testfor Measurement of Flow Gas,
24、is used for steam flow mea-surement with the assumption that steam is a volatile refriger-ant (R-718).This test method does not address the application prac-tices for absorbing generated moisture in an airstream orspace.1. PURPOSEThis standard method of test establishes a uniform method oflaboratory
25、 testing for rating commercial and industrial iso-thermal humidifiers.2. SCOPE2.1 The scope of this standard covers a method of test for thehumidification rate of commercial and industrial isothermalhumidifiers.2.2 This method of test describes the test apparatus, conductof the test, and information
26、 to be recorded.2.3 Information resulting from the application of this methodof test is intended for use by manufacturers, specifiers, install-ers, and users of commercial and industrial humidifiers.3. DEFINITIONScommercial and industrial humidifier: a device designed toadd moisture to air for comme
27、rcial and industrial applications.direct injection steam humidifiers: a type of humidifier,intended for duct and area applications, in which dry satu-rated steam is dispersed directly into the air.heated tank humidifiers: a type of humidifier that convertstank water to steam using electricity, gas,
28、steam, or hot fluid.The steam is dispersed into a duct system through dispersionmanifolds. If the humidifier is a free-standing unit, the steamis dispersed directly into the air space through a fan.humidification rate: a measure of the ability of a humidifierto add moisture to its surrounding atmosp
29、here, expressed as aunit of weight of water evaporated per unit of time.shall: the word shall indicates requirements of this standard.4. UNITS OF MEASUREMENT4.1 Systems of Units. The International System of Units (leSysteme International dUnites)1is employed in this standard.Values shall be based on
30、 the National Institute of Standardsand Technology (NIST) values which, in turn, are based onthe fundamental values of the International Bureau ofWeights and Measures. Inch-pound units appear in parenthe-ses (I-P) after SI units.4.2 Basic Units. The unit of length is either the metre (foot)designate
31、d “m” (“ft”) or the millimeter (inch), designated“mm” (“in.”). The unit of mass is the kilogram (pound mass),designated “kg” (“lbm”). The unit of time is the minute, des-ignated “min,” or the second, designated “s.” The unit oftemperature is the degree Celsius (Fahrenheit), designated“C” (“F”).4.2.1
32、 Flow Rate, Humidification Rate, and Velocity. Theunits for the flow rate for air are litres per second (cubic feetper minute), designated “L/s” (“cfm”). The unit for the flowrate for water is kilograms per hour (pounds mass per hour),designated “kg/h” (“lbm/h”). The unit for velocity is metresper s
33、econd (feet per minute), designated “m/s” (“fpm”).4.2.2 Pressure. The unit of pressure is the Pascal or kilo-pascal (pounds per square inch, inch water gage, or the inchmercury column), designated “Pa” or “kPa” (“psi,” “in. wc”or “in. Hg”). The inch mercury column shall be based on aone-inch column
34、of mercury at 0C (32F), under standardgravity (in vacuo).4.2.3 Power and Energy. In this standard, the unit of electri-cal voltage is the volt, designated as “V.” The unit of electricalpower is the kilowatt, designated “kW.” The unit of electricalenergy is the kilowatt-hour, designated “kWh.” The un
35、it forthermal energy is the kilojoule (British thermal unit), designate“kJ” (“Btu”). The unit for steam mass flow is kilograms perhour (pounds per hour), designated as “kg/h” (“lb/h”).5. INSTRUMENTATIONS ANDMETHODS OF MEASUREMENT5.1 Calibration. Except where noted, instruments shall becalibrated ann
36、ually over the range to be encountered in thetest. Calibration shall be certified traceable to the NIST orother national physical measures recognized as equivalent toNIST.5.2 Mass Flow Instruments5.2.1 Direct Steam Humidifier Test Stand. Steam massflow shall be determined by measuring the pressure d
37、ifferen-tial across a flat plate orifice in accordance with ASHRAEStandard 41.7-1984, Method for Gas Flow Measurement.3Itis acceptable to use measurement devices alternative to thosedescribed in Section 6 of Standard 41.7, provided the devicemeets the required accuracy. The accuracy of the measuring
38、instrument shall be 2% of the observed steam mass flowrate. ASHRAE (www.ashrae.org). For personal use only. Additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission.ANSI/ASHRAE Standard 164.3-2015 35.2.2 Nondirec
39、t Steam Humidifier Test Stand. The scaleand weigh tank shall have a pressurized water supply tank tothe humidifier, and a waste water tank, as shown in Figure 2.The scale shall have an accuracy of 0.005 kg (0.01 lbm).5.3 Air Temperature. Both wet- and dry-bulb air tempera-tures shall be measured in
40、accordance with ANSI/ASHRAEStandard 41.1, Standard Method for Temperature Measure-ment.2A measurement accuracy of 0.5C (1.0F) or bettershall be obtained. The smallest scale division of the instru-ment shall be no greater than 0.2C (0.5F).5.4 Water or Fluid Temperature. Water and fluid tempera-ture s
41、hall be measured using a submerged well, an insulatedwrap of the supply line, or any other method with a demon-strated accuracy of 0.5C (1.0F) or better.5.5 Relative Humidity. Relative humidity shall be calcu-lated from the dry-bulb temperature, wet-bulb temperature,and barometric pressure or read d
42、irectly from a humiditymeasuring device that has a demonstrated accuracy of 1%.5.6 Chronometer. A timepiece that displays time in secondsand keeps time accurate to within 2 minutes per day shall beused for all time measurements. Calibration is not necessary.5.7 Water-Pressure-Indicating Instruments.
43、 Water pres-sure shall be measured with oil-filled gages, electronic trans-ducers, or other instruments that provide a maximum error of1% of the maximum observed reading or 3.5 kPa (0.5 psi),whichever is larger. Since the pressures measured in this stan-dard are not expected to be steady, the pressu
44、re reading indi-cated on any instrument will fluctuate with time. In order toobtain a true reading, either the instrument shall be damped orthe readings shall be averaged in a suitable manner. Multi-point or continuous record averaging can be accomplishedwith instruments and analyzers designed for t
45、his purpose.5.8 Combustion Gas Mass Flow. Combustion gas massflow shall be measured using any measurement device withan accuracy of 2.0% of the observed reading.5.9 Electrical Voltage. Voltage shall be measured using avolt meter connected to the humidifier over the duration ofthe test. Volt meters s
46、hall have an accuracy of 1.0% of theobserved reading.5.10 Power Measurement. Power shall be measured using awattmeter connected to the humidifier over the duration of thetest. Wattmeters shall have an accuracy of 1.0% of theobserved reading.5.11 Electrical Energy Measurement. Energy shall be mea-sur
47、ed using a watt-hour meter connected to the humidifierover the duration of the test. Watt-hour meters shall have anaccuracy of 1.0% of the observed reading.5.12 Atmospheric Pressure. The atmospheric pressure shallbe measured with a mercury column barometer or other instru-ment with a demonstrated ac
48、curacy of 200 Pa (0.06 in. Hg)and with scale divisions no larger than 50 Pa (0.015 in. Hg).Test shall be conducted below 1500 m (5000 ft) elevation.5.13 Water Conductivity Measurements. Water conductiv-ity shall be measured using a conductivity meter having anaccuracy 0.5 S of observed reading.5.14
49、Airflow. Room airflow shall be measured within fivefeet of the humidifier using an instrument that has a demon-strated accuracy of 0.0125 m/s (2.5 fpm).6. EQUIPMENT AND SETUP6.1 Air Treatment Facilities. The test facility shall be pro-vided with air treating equipment to maintain the prescribedconditions of temperature, humidity, and pressure within thetest area.6.2 Temperature Measuring. Air temperature measure-ments and fluid temperature measurements shall be made inaccordance with the applicable provisions of ANSI/ASHRAEStandard 41.1,2St
