ARI 940-1998 Desiccant Dehumidification Components《干燥除湿混合物》.pdf
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1、 STD-AR1 9qO-ENGL 1998 I 0352120 00111118 598 S 1998 STANDARD for AIR-CONDITIONING classification; requirements for testing and rating; minimum data requireanem for published rajngs; marking and nameplate data; and conformance conditions. 1.1.1 Intent. This standard is intended for the guidance of t
2、he industry, including manufacturers, engineers, installers, contractors and users. 1.13 Review and Amendment. This standard is subject to review and amendment as technology advances. Section2. Scope 2.1 Scope. This standard applies to factory manufactured, thermay regenerate, dynamic desiccant comp
3、onents operating at atmospheric pressure as defined in Section 3. only the desiccant containing component is subject to this standard. Blowers, heat exchangers, evapdve coolers, drive motors, etc. are not rated within this standard, but may be subject to other ARI standards. 2.2 Exclusions. This sta
4、ndard does not apply to liquid desiccant components, regenemive heat exchangers (enthalpy wheels) containing desiccant, nor desiccant components intended or used for packaging or other static applications. Section 3. Definitions 3.1 Definitions. All terms in this document will follow the standard in
5、dustry definitions in the current edition of ASHRAE Terminology of Heating, Ventilation, Air Conditioning and Rejiigeration unless otherwise defned in this section. 3.2 Airflow. The rate of flow of air in ch m3/hr is defined as the process supply air (leaving the device) and regeneration outlet (lea
6、ving). 33 Atmospheric Pressure. For the purposes of this standard, atmospheric pressure is defined as 29.92 in. Hg 1101.325 kPa. 3.4 Component. An assembly which includes the drive motor and the desiccantanthing meia/matrix within a housing containing air separation seals as provided by the manufact
7、urer. 3.5 Moisture Removal Capacity (MRC). The moisture removed in lbh F grains of moisture containe in a sample of moist air per pound of dry air contained within the same sample. ( Note: 7000 grains = one pound.) or wherc MRC = Moisture Removal Capacity in kgni v, GPK = grams per kilogmm, g/kgda -
8、 humidity ratio; grams of moisture contained in a sample of moist air per kilogam of dry air contained within the same sample. = pic volume of air, m3/kg, 3.6 Processes. 3.6.1 Dynamic. A process in which both the “sorption” and “desorpti0n” processes are aided by air moving devices and the desiccant
9、 is termally regenerated in place. 3.6.2 Static. A procm in which a desiccant “sorbs” moisture fiom ambient air without the aid of air moving devices or in which the desiccant is not hennally regenerated in place. 1 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license
10、 with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD-AR1 940-ENGL 3998 H 0352320 DULL152 T39 6 AR1 STANDARD 940-98 3.7 Published Rating. A statemeat of the assigned values of those performance characteristics, under stated rating conditions, by which a unit
11、 may be chosen to fit its application. These dues apply to all units of like nominal size and type (identification) produced by the same manufactura. As used herein, the term “published rating“ includes the rating of all performance Characteristics shown on the unit or published in specifications, a
12、dvertising or other literature controlled by the manufimurer, at stated rating conditions. 3.7.1 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.7.2 Application Rating. A rating based on tests performed at application rating conditions (other than Standard Rating
13、Conditions). 3.8 Rating Conditions. Any set of operating conditions under which a single level of performance results, and which causes only that level of perfomnnce to occur. 3.8.1 Standard Rating Conditions. Rating conditions used as the basis of comparison for performance characteristics. 3.9 Reg
14、eneration. Desorption of the desiccant by thermal means. 3.10 “Shall,“ “Should,“ “Recommended,“ or IIt Is Recomrtded“ “Shall,“ “should,“ “recommended,“ or “it is recommended“ shall be interpreted as follows: 3.10.1 Shall. Where “shall“ or “shail not“ is used for a provision specified, that provision
15、 is mandatory if compliance with the standard is claimed. 3.10.2 Should, Reconunertded, or It Is Recommended. “Should,“ “recommended“ or “it is recommended“ is used to indicate provisions which are not mandatory but which are desirable as good practice. Section 4. Classification 4.1 Classijkation. T
16、hermally regenerated dynamic desiccant cooiing and desiccant dehumidification components are classied into groups as follows: 4.1.1 a. b. 4.1.2 a. b. d. 4.1.3 a. b. C. C. 4.1.4 a. b. 4.1.5 Desiccants: Adsorption Absorption Arrangement: Packed component Rotating cylinder Dual tower Coated/bonded/mono
17、lithic component Fan Arrangement: Blow through: Both air streams are blown through the desiccant component. Draw through: Both air streams are drawn through the desiccant component. DrawLBlow through: Regeneration air is drawn through while the process air is blown through the desiccant component. (
18、See ARI Standard 430 for diagrams.) Purge Section: With purge Without purge Process Area to Regeneration Area Ratio: Manmer-spied (e.g., 3:1,50/50, etc.) Section 5. Test Requirements 5.1 Method of Testing. All srandard ratings shall be verified by tests conducted in accordance with ASHRAE Standard 1
19、39. 5.2 Elecrical Requirements. The tests shall be made at the elecical characteristics specied on the unit nameplate. If dual characteristics are shown on the nameplate, tests shaU be made to satisfy either rating. 5.3 Minimum Test Requirements. Tests shall be made using three different process air
20、 faCe velocities. Face velocity shall be manufcturers published maximum, mid and minimum values. 2 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD.ARI 940-ENGL 1998 6 0
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