1、 2005 STANDARD for 4100 N. FAIRFAX DR., SUITE 200 ARLINGTON, VIRGINIA 22203 PERFORMANCE RATING OF COMMERCIAL AND INDUSTRIAL HUMIDIFIERS Standard 640 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted wit
2、hout license from IHS-,-,-IMPORTANT SAFETY DISCLAIMER ARI 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 produ
3、cts be designed, constructed, assembled, installed and operated in accordance with nationally recognized safety standards and code requirements appropriate for products covered by this standard/guideline. ARI uses its best efforts to develop standards/guidelines employing state-of-the-art and accept
4、ed industry practices. ARI does not certify or guarantee that any tests conducted under its standards/guidelines will be non-hazardous or free from risk. Note: This standard supersedes ARI Standard 640-1996. Price $15.00 (M) $30.00 (NM) Copyright 2005, by Air-Conditioning and Refrigeration Institute
5、 Printed in U.S.A. Registered United States Patent and Trademark Office Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE OF CONTENTS SECTION PAGE Section 1. Purpose1
6、Section 2. Scope.1 Section 3. Definitions.1 Section 4. Classifications.3 Section 5. Test Requirements 3 Section 6. Rating Requirements.4 Section 7. Minimum Data Requirements for Published Ratings .5 Section 8. Marking and Nameplate Data .5 Section 9. Conformance Conditions 5 TABLES Table 1. Classifi
7、cation of Commercial and Industrial Humidifiers3 Table 2. Conditions for Standard Rating Tests.4 APPENDICES Appendix A. References - Normative 6 Appendix B. References - Informative.6 Appendix C. Method of Test for Commercial and Industrial Humidifiers - Normative7 TABLES FOR APPENDICES Table C1. No
8、zzle Discharge Coefficient.7 Table C2. Temperature Correction Factor.8 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-FIGURES FOR APPENDICES Figure C1. Test Apparatus for
9、 Direct Steam Injection .10 Figure C2. Test Apparatus for Heated Tanks .11 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ARI STANDARD 640-2005 1PERFORMANCE RATING OF CO
10、MMERCIAL AND INDUSTRIAL HUMIDIFIERS Section 1. Purpose 1.1 Purpose. The purpose of this standard is to establish for Commercial and Industrial Humidifiers: definitions; classifications; test requirements; rating requirements; minimum data requirements for Published Ratings; marking and nameplate dat
11、a; and conformance conditions.1.1.1 Intent. This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, 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 Sc
12、ope. This standard applies to factory-made Commercial and Industrial Humidifiers, as defined in Section 3. 2.1.1 Energy Source. This standard applies to electric, gas, or hot water operated Commercial and Industrial Humidifiers including those that depend on steam from a central steam boiler. 2.1.2
13、Installation. Commercial and Industrial Humidifiers are intended for installation into an enclosed space or air system. 2.2 Exclusions. This standard does not apply to the following: 2.2.1 Central System Humidifiers as defined in the ARI Standard 610 and to Self-Contained Humidifiers as defined in A
14、RI Standard 620. 2.2.2 Portable Humidifiers as defined in AHAM HU-1. Section 3. Definitions All terms in this document shall follow the standard industry definitions in the current edition of ASHRAE Terminology of Heating, Ventilation, Air Conditioning and Refrigeration unless otherwise defined in t
15、his section. 3.1 Commercial and Industrial Humidifier (Humidifier). A device designed to add moisture to air. 3.1.1 Atomizing Humidifiers. A type of Humidifier intended for duct applications in which water is reduced to minute particles and dispersed to air as a fine mist. 3.1.1.1 Centrifugal Type A
16、tomizer. Utilizes a high-speed disk to sling water to its rim where it is thrown onto plates or a comb to produce a fine mist. 3.1.1.2 Nozzle Type Atomizers. Utilizes a nozzle, compressed-air, water, or air and water, to reduce water to a fine mist. a. Compressed Air. Compressed air is forced throug
17、h an annular orifice at the nozzle tip creating a vortex at the tip. Water is forced through the center orifice of the nozzle where it is atomized on contact with the compressed air at the nozzle tip. b. Compressed Air and Water. Compressed air and water are combined inside the nozzle and discharged
18、 onto a resonator to produce a fine mist at the nozzle tip. c. Compressed Water. High pressure pump is used to force water through the orifice of a nozzle to produce a fine mist at the nozzle tip. Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for R
19、esaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 640-2005 _ 2 3.1.1.3 Ultrasonic Atomizer. A piezoelectric transducer immersed in a reservoir of mineral free water. The transducer converts a high-frequency electronic signal into a high-frequency mechanical oscil
20、lation. The mechanical oscillation is directed at the surface of the water, where at very high frequencies it creates a fine mist. 3.1.2 Direct Injection Steam Humidifiers. A type of Humidifier intended for duct applications in which steam, water vapor under pressure and at high temperature, is disp
21、ersed directly into the air. a. Steam Cup Type. Utilizes a cup and drain mounted beneath the duct. Steam is injected into the sides of a cup allowing most of the moisture of the steam to enter into the air while permitting the condensate to fall into the cup by gravity and into the steam trap. b. St
22、eam Separator Type. Utilizes an enclosed distribution pipe, a separating chamber, an integral control valve, and a drain to distribute steam into the air. Steam is injected directly into the enclosed distribution pipe providing reheat to the outgoing steam passing through the distributor pipe before
23、 being released into the air. The steam then enters the separating chamber which allows dry steam to pass through the control valve and into the distributor pipe while allowing condensate to fall by gravity into the drain. The moisture of the steam is reheated while in the distributor pipe before be
24、ing dispersed into the air. c. Steam Panel Type. Utilizes an integral control valve, a header with multiple distributor pipes, and a drain. The control valve regulates the amount of steam that is injected into the header, which allows dry steam to pass into the distributor pipe(s) while allowing con
25、densate to escape through the drain. The moisture of the steam in the distributor pipe(s) is dispersed into the air. 3.1.3 Heated Tank Humidifiers. A type of Humidifier which converts tank water to steam using electricity, gas, or steam. The steam is dispersed into a duct system through dispersion m
26、anifolds. If the Humidifier is a free standing unit, the steam is dispersed directly into the air space through a fan unit. a. Electrode Type. Utilizes an electric current passing through the water to create heat energy to produce steam. b. Gas Heated Type. Utilizes natural gas or propane as the hea
27、ting method to convert water to atmospheric steam. c. Infrared Type. Utilizes one or more radiant heat bulbs to create heat energy to produce steam. d. Resistance Type. Utilizes one or more electrical elements to heat the water directly to produce steam. e. Steam-to-Steam Type. Utilizes steam from a
28、 central boiler passing through a heat exchanger submersed in water to create heat energy to produce steam. f. Hot Water Type. Utilizes hot water from a central boiler passing through a heat exchanger submersed in water to create heat energy to produce steam. 3.2 Humidification Capacity. The capacit
29、y associated with a Humidifiers ability to add moisture to air expressed in lb/h kg/h of continuous operation. 3.3 Published Rating. A statement of the assigned values of those performance characteristics, under stated Rating Conditions, by which a unit may be chosen to fit its application. These va
30、lues 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 other literature controlled by the manufacturer,
31、 at stated Rating Conditions. 3.3.1 Application Rating. A rating based on tests performed at application Rating Conditions (other than Standard Rating Conditions). 3.3.2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.4 Rating Conditions. Any set of operating cond
32、itions under which a single level of performance results and which causes only that level of performance to occur. 3.4.1 Standard Rating Conditions. Rating Conditions used as the basis of comparison for performance characteristics. 3.5 “Shall“ or “Should“. “Shall“ or “should“ shall be interpreted as
33、 follows: 3.5.1 Shall. Where “shall“ or “shall not“ is used for a provision specified, the provision is mandatory if compliance with the standard is claimed. 3.5.2. Should. “Should“ is used to indicate provisions which are not mandatory but which are desirable as good practice. Copyright Air-Conditi
34、oning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ARI STANDARD 640-2005 33.6 Supplementary Heat. Heat used to enhance evaporation when used in the recirculating system or to heat water for dire
35、ct evaporation. Section 4. Classifications 4.1 Commercial and Industrial Humidifiers within the scope of this standard may be classified as shown in Table 1. Table 1. Classification of Commercial and Industrial Humidifiers Model Group Model Designation ARI Type Centrifugal Type Atomizer ACA Nozzle T
36、ype Atomizer ANA Group I Ultrasonic Atomizer AUA Direct Steam Injection (Cup Type) IDS-C Direct Steam Injection (Separator Type) IDS-S Direct Steam Injection (Panel Type) IDS-P Heated Tank (Electrode Type) IHT-E Heated Tank (Gas Heated Type) IHT-G Heated Tank (Infrared Type) IHT-I Heated Tank (Resis
37、tance Type) IHT-R Heated Tank (Steam-to-Steam Type) IHT-SS Group II Heated Pan (Hot Water Type) IHP-HW Section 5. Test Requirements 5.1 Test Requirements. Published Ratings shall be verified by tests conducted in accordance with the test procedure described in Appendix C. 5.1.1 Equipment. Humidifier
38、s shall be tested using all components as recommended by the manufacturer. 5.1.2 Electrical Conditions. Nameplate voltages are shown in ARI Standard 110, Table 1. Nameplate voltages for 50 Hz systems shall include one or more of the utilization voltages shown in IEC Standard 60038. Tests shall be pe
39、rformed at the nameplate rated voltage and frequency unless otherwise specified in this standard. 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. Copyright Air-Conditionin
40、g and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 640-2005 _ 4 Section 6. Rating Requirements 6.1 Published Ratings. Published Ratings shall include Humidification Capacity, power input
41、, and energy input of Supplementary Heat. Humidification Capacity1shall be expressed in lb/h kg/h and stated to the nearest 0.1 lb/h 0.05 kg/h. Power input shall be expressed in kW and stated to the nearest 0.1 kW. Where Supplementary Heat other than electric heat is used, the energy input shall be
42、expressed in multiples of 300 Btu/h 87.9 W. 6.2 Standard Ratings. Ratings based on data determined by the test requirements prescribed in Section 5 shall be published as Standard Ratings when conducted at the Standard Rating Conditions specified in Table 2. 6.3 Application Ratings. Ratings based on
43、data determined by test requirements prescribed in Section 5 and conducted using Rating Conditions other than those specified in 6.2 shall be published as Application Ratings. 6.4 Tolerances. To comply with this standard, measured test results shall not be less than 95% of Published Ratings for Humi
44、dification 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. Table 2. Conditions for Standard Rating Tests Room Condi
45、tions Duct Air Conditions1Supply Water Temperature Supply Water Pressure Humidifier Type RH 30% Temp. 75.0F 23.9C RH 30% Temp. 75.0F 23.9C 60.0F 15.6C 60.0 psi 414 kPa Water Temp. Entering 200F 93.3C Leaving 190F 87.8C Steam Pressure Entering: 10 psi 69 kPa Condensate Return Pressure: 0 psi 0 kPa Gr
46、oup I Atomizing X X X X X Direct Steam Injection X X Group II Heated Tank X X X X3X2Notes: 1.Where applicable, duct airflow velocity is 500 fpm 2.5 m/s 2%. 2.Where applicable. 3.Applicable to hot water type only. 1When converting Humidification Capacity from gal/day to lb/h, one gallon shall be assu
47、med to weigh 8.34 lb. When converting Humidification Capacity from kg/h to L/day, one liter of water shall be assumed to weigh 1 kg.Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ARI STANDARD 640-2005 5Section 7. Minimum Data Requirements for Published Ratings 7.1 Minimum Data Required for Published Ratings. As a minimum, Published Ratings shall consist of the following information: a. Humidification Capacity, lb/h kg
