AHRI 611 SI-2014 Performance Rating Of Central System Humidifiers for Residential Applications.pdf

1、 2014 Standard for Performance Rating Of Central System Humidifiers for Residential Applications AHRI Standard 611 (SI) Price $10.00 (M) $20.00 (NM) Copyright 2014, by Air-Conditioning, Heating, and Refrigeration Institute Printed in U.S.A. Registered United States Patent and Trademark Office IMPORT

2、ANT SAFETY DISCLAIMER AHRI does not set safety standards and does not certify or guarantee the safety of any products, components or systems designed, tested, rated, installed or operated in accordance with this standard/guideline. It is strongly recommended that products be designed, constructed, a

3、ssembled, installed and operated in accordance with nationally recognized safety standards and code requirements appropriate for products covered by this standard/guideline. AHRI uses its best efforts to develop standards/guidelines employing state-of-the-art and accepted industry practices. AHRI do

4、es not certify or guarantee that any tests conducted under its standards/guidelines will be non-hazardous or free from risk. Note: This standard supersedes ANSI/AHRI Standard 610-2004. For I-P ratings, see AHRI Standard 610 (I-P)-2014. TABLE OF CONTENTS SECTION PAGE Section 1. Purpose 1 Section 2. S

5、cope . 1 Section 3. Definitions . 1 Section 4. Classifications . 3 Section 5. Test Requirements . 4 Section 6. Rating Requirements . 6 Section 7. Minimum Data Requirements for Published Ratings 7 Section 8. Operating Requirements 7 Section 9. Marking and Nameplate Data . 8 Section 10. Conformance Co

6、nditions. 8 TABLES Table 1. Classification of Central System Humidifiers . 3 Table 2. Standard Rating Conditions 6 Table 3. Additional Standard Rating Conditions 6 FIGURES Figure 1. Return Air or Supply Air (Duct or Plenum) and By-pass (Supply-to-Return) Test Section . 5 APPENDICES Appendix A. Refer

7、ences Normative 9 Appendix B. References Informative 9 Appendix C. Method of Measuring Airflow Rate Through a By-pass Humidifiers Informative 10 FIGURES FOR APPENDICES Figure C1. By-pass (Supply) Humidifier Test Section for Airflow Rate Measurement . 10 Figure C2. By-pass (Return) Humidifier Test Se

8、ction for Airflow Rate Measurement 10 _ AHRI STANDARD 611 (SI)-2014 1 PERFORMANCE RATING OF RESIDENTIAL CENTRAL SYSTEM HUMIDIFIERS FOR RESIDENTIAL APPLICATIONS Section 1. Purpose 1.1 Purpose. The purpose of this standard is to establish for Residential Central System Humidifiers: definitions; classi

9、fications; test requirements; rating requirements; minimum data requirements for Published Ratings; operating requirements; marking and nameplate data; and conformance conditions. 1.1.1 Intent. This standard is intended for the guidance of the industry, including manufacturers, engineers, installers

10、, contractors and users. 1.1.2 Review and Amendment. This standard is subject to review and amendment as technology advances. Section 2. Scope 2.1 Scope. This standard applies to factory-made Central System Humidifiers, as defined in Section 3. 2.1.1 Energy Source. This standard applies to electrica

11、lly operated Central System Humidifiers that depend on the air stream of a central air system for moisture evaporation and distribution. 2.1.2 Installation. Central System Humidifiers are intended for installation in central air systems. 2.2 Exclusions. This standard does not apply to the following:

12、 2.2.1 Self-contained humidifiers as defined in ANSI/AHRI Standard 620. 2.2.2 Portable Humidifiers as defined in ANSI/AHAM HU-1. 2.2.3 Humidifiers for commercial and industrial applications as defined in ANSI/AHRI Standard 640. Section 3. Definitions All terms in this document will follow the standa

13、rd industry definitions in the ASHRAE Wikipedia website (http:/wiki.ashrae.org/index.php/ASHRAEwiki) unless otherwise defined in this section. 3.1 Humidification Capacity. The capacity associated with a Central System Humidifiers ability to add moisture to air expressed in L/day of continuous operat

14、ion. 3.2 Humidifier. A device designed to add moisture to air. 3.2.1 Central System Humidifier (Humidifier). A class of Humidifier intended to be installed in or to discharge into the air stream of a central air system. It may be mounted in or on one of the following: 3.2.1.1 Return Air Duct (RD). A

15、 Humidifier that is connected to a horizontal duct and has the function of returning humidified air to the central system. 3.2.1.2 Return Air Plenum (RP). A Humidifier that is connected to a vertical duct and has the function of returning humidified air to the central system. AHRI STANDARD 611 (SI)-

16、2014 _ 2 3.2.1.3. Supply Air Duct (SD). A Humidifier that is connected to a horizontal duct and has the function of delivering humidified air from the central system. 3.2.1.4 Supply Air Plenum (SP). A Humidifier that is connected to a vertical duct and has the function of delivering humidified air f

17、rom the central system. 3.2.1.5 By-pass (Supply-to-Return) (SR). A Humidifier that is connected to a central system and obtains its energy through a duct from the supply or return of the system. 3.2.1.6 Heating or Cooling Unit (HC). An air-moving device used to supply heating and/or cooling to a res

18、idence or space. 3.3 Humidistat. A device that regulates moisture input by responding directly or indirectly to changes in the moisture content of the air. 3.4 Published Rating. A statement of the assigned values of those performance characteristics, under stated Rating Conditions, by which a unit m

19、ay be chosen to fit its application. These values apply to all units of like nominal size and type (identification) produced by the same manufacturer. The term Published Rating includes the rating of all performance characteristics shown on the unit or published in specifications, advertising or oth

20、er literature controlled by the manufacturer, at stated Rating Conditions. 3.4.1 Application Rating. A rating based on tests performed at application Rating Conditions (other than Standard Rating Conditions). 3.4.2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.5

21、 Rating Conditions. Any set of operating conditions under which a single level of performance results and which causes only that level of performance to occur. 3.5.1 Standard Rating Conditions. Rating Conditions used as the basis of comparison for performance characteristics. 3.6 “Shall“ or “Should“

22、. “Shall“ or “should” shall be interpreted as follows: 3.6.1 Shall. Where “shall“ or “shall not“ is used for a provision specified, that provision is mandatory if compliance with the standard is claimed. 3.6.2 Should. “Should“ is used to indicate provisions which are not mandatory but which are desi

23、rable as good practice. 3.7 Standard Air. Air weighing 1.2 kg/m3which approximates dry air at 21C and at a barometric pressure of 101.3 kPa. 3.8 Supplementary Heat. Heat used to enhance evaporation when used in the recirculating system or to heat the water for direct evaporation. _ AHRI STANDARD 611

24、 (SI)-2014 3 Section 4. Classifications 4.1 Classifications. Humidifiers within the scope of this standard shall be classified as shown in Table 1. Table 1. Classification of Central System Humidifiers Types of Central System Humidifiers Designation AHRI Type Arrangement Return Air Duct RD Horizonta

25、l duct returning air to central air system Humidifier Central air system Return Air Plenum RP Vertical duct returning air to central air system Humidifier Central air system Supply Air Duct SD Central air system Humidifier Horizontal duct delivering air from central air system Supply Air Plenum SP C

26、entral air system Humidifier Vertical duct delivering air from central air system By-pass (Supply-to-Return) SR Horizontal / vertical duct returning air to central air system Humidifier Horizontal / vertical duct delivering air from central air system Heating or Cooling Unit HC Humidifier Central ai

27、r system AHRI STANDARD 611 (SI)-2014 _ 4 Section 5. Test Requirements 5.1 Test Requirements. Published Ratings shall be verified by tests conducted in accordance with ANSI/ASHRAE Standard 164.1, except as noted below and as shown in Appendix C. 5.1.1 Section 6.3.1 of ANSI/ASHRAE Standard 164.1, Nozz

28、le Construction, shall apply, except that nozzles shall be sized for a throat velocity not less than 14.0 m/s nor more than 35.5 m/s. 5.1.2 Section 7.6.2 of ANSI/ASHRAE Standard 164.1, Supply-to-Return Test Section, shall apply, except that the supply-to-return test section shall be constructed as s

29、hown in Figure 1. 5.1.3 Section 8.2 of ANSI/ASHRAE Standard 164.1, Test Requirements, shall apply, except that the locations of the planes shall be as shown in Figure 1. 5.1.4 Section 8.2.1.3 of ANSI/ASHRAE Standard 164.1, Water Supply, shall apply, except that the temperature of the feed water ente

30、ring the water control device shall be 15.5C 0.5C. 5.1.5 Section 8.2.1.4 of ANSI/ASHRAE Standard 164.1, Air Temperature and Pressure, shall apply, except that air pressure in the test plenum shall be 12 3 Pa below atmospheric pressure. 5.1.6 Section 8.2.2.1.e of ANSI/ASHRAE Standard 164.1, Test Appa

31、ratus, shall apply, except that the humidifier test section shall be as shown in Figure 1. 5.1.7 Section 8.2.3.1.e of ANSI/ASHRAE Standard 164.1, Test Apparatus, shall apply, except that the humidifier test section shall be as shown in Figure 1. 5.1.8 Section 8.2.4.c of ANSI/ASHRAE Standard 164.1, S

32、upply-to-Return Test Method, shall apply, except that surfaces of the supply and return plenums shall be as shown in Figure 1. 5.1.9 Section 8.2.4.1.e of ANSI/ASHRAE Standard 164.1, Test Apparatus, shall apply, except that the humidifier test section shall be as shown in Figure 1. 5.2 Equipment. Hum

33、idifiers shall be tested using all components as specified by the manufacturer. 5.3 Electrical Conditions. For all dual nameplate voltage equipment covered by this standard, tests shall be performed at both voltages or at the lower voltage if only a single rating is to be published. _ AHRI STANDARD

34、611 (SI)-2014 5 Figure 1. Return Air or Supply Air (Duct or Plenum) and By-Pass (Supply-to-Return) Test Section AHRI STANDARD 611 (SI)-2014 _ 6 Section 6. Rating Requirements 6.1 Published Ratings. Published Ratings shall include Humidification Capacity, power input, energy input of Supplementary He

35、at, and air pressure drop across the Humidifier. Humidification Capacity shall be expressed in terms of L/day and stated to the nearest 0.5 L/day. Power input shall be expressed in Watts stated to the nearest 5 Watts. Energy input of Supplementary Heat shall be expressed in Watts stated to the neare

36、st increment of 30 Watts. Air pressure drop across the Humidifier shall be expressed in terms of Pa stated to the nearest increment of 0.25 Pa. = 1 Where: HM= Humidification Rate in kg/h, from Equation 18 in ASHRAE Standard 164.1-2012 = 1, kg/L t = 24, hr 6.2 Standard Ratings. Ratings based on data

37、determined by the test requirements prescribed in Section 5 shall be published as Standard Ratings when conducted at the following Standard Rating Conditions as shown in Table 2. Table 2. Standard Rating Conditions1Standard Rating Conditions Air Velocity, m/s 4.10 Water pressure entering water contr

38、ol valve, kPa 415.0 Water temperature entering water control valve, C 15.5 0.5 Supplementary Heat (Water) Test Conditions Water pressure entering water control valve, kPa gage 105 35 Water temperature entering water control valve, C 50.0 Supplementary Heat (Steam) Test Conditions Steam pressure ente

39、ring water control valve, kPa gage 15.0 Note 1: Lower velocity may be used if so recommended by the manufacturer. The air velocity in the return air plenum or return air duct shall be maintained at 4.10 m/s or the manufacturers recommendation based on 24.0C dry-bulb and 13.5C wet-bulb at the tempera

40、ture and pressure measuring station, with an allowable test tolerance of 0.10 m/s. The air velocity in the supply air plenum shall be that which occurs as a result of maintaining the specified air velocity in the return air plenum. 6.2.3 Additional Standard Rating Conditions. In addition, Standard R

41、ating Conditions shall include the applicable additional Standard Rating Conditions, Table 3, depending upon the specific test method used to determine Humidification Capacity as described in ANSI/ASHRAE Standard 164.1. Where a heating only central air system is involved, 50.0C dry-bulb temperature

42、shall be established at the Supply Air Plenum prior to allowing water to enter the Humidifier. Table 3. Additional Standard Rating Conditions Return Air Duct and Return Air Plenum Dry-bulb air temperature entering test section, C 24.0 Wet-bulb air temperature entering test section, C 13.5 Air pressu

43、re in test section, Pa below atmospheric pressure 12.0 Supply Air Duct and Supply Air Plenum Dry-bulb air temperature entering test section, C 50.0 Air pressure in test section, Pa above atmospheric pressure 37.0 By-pass (Supply-to-Return) Dry-bulb air temperature entering Return Air Plenum, C 24.0

44、Wet-bulb air temperature entering Return Air Plenum, C 13.5 Dry-bulb air temperature entering Supply Air Plenum, C 50.0 Air pressure in Return Air Plenum, Pa below atmospheric pressure 12.0 Air pressure in Supply Air Plenum, Pa above atmospheric pressure 37.0 _ AHRI STANDARD 611 (SI)-2014 7 6.3 Appl

45、ication Ratings. Ratings based on data determined by test requirements prescribed in Section 5 and conducted using Rating Conditions other than those specified in Table 2 shall be published as Application Ratings. 6.4 Tolerances. To comply with this standard, measured test results shall not be less

46、than 95% of the Published Ratings for Humidification Capacity and shall not exceed 110% of Published Ratings for power input or energy input of Supplementary Heat. Where Supplementary Heat (water) is used, the energy input from this source shall not be more than the rated power input. Section 7. Min

47、imum Data Requirements for Published Ratings 7.1 Minimum Data Required for Published Ratings. As a minimum, Published Ratings shall consist of the following information: 7.1.1 Humidification Capacity, L/day 7.1.2 Power input, W 7.1.3 Energy input of Supplementary Heat, W (where Supplementary Heat is

48、 used) As a minimum, Published Ratings shall include all Standard Ratings. All claims to ratings within the scope of this standard shall include the statement “Rated in accordance with AHRI Standard 611 (SI)”. All claims to ratings outside the scope of this standard shall include the statement “Outside the scope of AHRI Standard 611