ARI 940-1998 Desiccant Dehumidification Components《干燥除湿混合物》.pdf

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

21、352320 0031153 955 P I AR1 STANDARD 940-98 1 Table 1. Standard Rating Conditions* Process Air Inlet Condition Regeneration Air Inlet Condition Condition Number Dry Bulb* Wet Bulb* Dry Bulb* Wet Bulb* 1 95F 35“Cl 75F 23.9“q 95OF 35“C 75F 23.9“C 2 80F 26.7“q 75F 23.9“C 80oF 26.7“C 75F 23,9“C 3 80F 26.

22、7“C 67F 19.4“C 95F 35“C 75F 23.9“c 4 45F 7.2“C 45F 7.2“C 80F 26.7“C 75F 23.9“C * Ail tests are run at atmqheric pressure. * The tolerance for all temperatures during the test is iO.5“F *.3“c. Section 6. Rating Requirements 6.1 Published Ratings. Published ratings &ali include Standard Ratings, and m

23、ay also include Application Ratings. Published ratings include those shown on the desicCant cooling or dehumidifying component or published in specications, advertising, or other literature controlled by the manufacturer. 6.1.1 If the use of a wt drive motor, housing or air-separation seal affects t

24、he performance of the desiccant cooling or dehumidifying component, the pubiished ratings shall include a statement describing the mditions under which the compnent was tested. 6.16 When optionai constnictons, arrangements or appinteaiances including drive motors, housings or air- separation seas ar

25、e offered by the manufacturer, published ratings sha clearly indicate their effect un the performance. 6.2 Standard Ratings. Siandard Ratings shall be established at the Standard Rating Conditions specified in Table 1, using a minimum of three of the four conditions, with a tolerance of iO.5“F iO.3“

26、C dry bulb and M.5“F E-rO.3“CI wet bulb. All Standard Ratings shall be verified by tests as described in Section 5. Standard Ratings shall include: 6.2.1 Moisture Removal Capacity. The Moisture Removal Capacity (MRC) shall be expressed in lb/h kglh, rounded to the first decimal place for MRC less th

27、an or equal to 24.0 lb/h, or to the whole number for MRC greater than 24.0 lbh. 63 Application Ratings. Application Ratings may be established at conditions other than those specified in Table 1 of this standard. 63.1 Extension of Test Data. Test data may be extended to other components of like geom

28、etrylclassinction based upon equal face velocity of both the process and regeneration air streams and equal regenemion air temperature. Test data sha not be extended by use of fan laws. Test data shall not be extended to components classified Werently per Section 4 of this standard. 6.4 Publication

29、ofRatings. Wherever application ratings are published or printed, they shall include or be accompanied by the Standard Ratings, clearly designated as such, including a statement of the conditions at which the ratings apply. 6.5 Tolerances. To comply with this standard, published ratings shali be suc

30、h that any desiccant cooling and/or dehumidincatian component production unit shall produce a Moisture Removal Capacity no less than 95% of the published rating. Section 7. Minimum Data Requirements for Published Ratings 7.1 Duta Requirements. Data requirements for Published Ratings shall include th

31、ose performance characteristics, at Standard Rating Conditions, by which a product may be chosen to t its application and shall be as listed in Sections 5 and 6. 3 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or networking

32、 permitted without license from IHS-,-,-STDmARI 740-ENGL 1778 H 0352320 0011154 871 I AR1 STANDARD 940-98 Section 8. Marking and Nameplate Data Section 9. Voluntary Conformance 8.1 Nameplate. A nameplate shall be permanently 9.1 Conformance. While confannance with this standard affixed to units clai

33、ming compiance to this standard. is voluntary, conformance shall not be claimed or implied for products or equipment within its Purpose (Section 1) 8.2 Nameplate Markings. The nameplate shall include, and Scope (Section 2) unless such claims meet all of the at minimum, the manufhcturers name and add

34、ress, model requbements of the standard. number, serial number, date of manufacture, air flow capaciy, and electrical characteristics. 8.3 Recommended Nameplate Voltage. Nameplate voltage for 60 Hertz units shall be in accordance with one or more of the equipment nameplate voltage ratings shown in T

35、able 1 of ARI Standard 110. Test voltage for 50 Hertz units shall be in accordance with one or more of the utilization voltages shown in Table 1 of IEC Standard Publication 38. 4 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproductio

36、n or networking permitted without license from IHS-,-,-STD-AR1 940-ENGL 1998 E 0352320 OOLl355 728 D AR1 STANDARD 9-98 APPENDIX A. REFERENCES - NORMATIVE Al Listed here are all standards, handbooks, and other publications essential to the formation and implementation of this standard. AU references

37、in this appendix are considered as part of this standard. Al.l AlU Standard 110-97, Air-conditioning and Refiigerating Equipment Nameplate Voltages, 1997, Air-conditioning and Refiigeration Institute, 4301 Narth Fairfax Drive, Suite 425, Arlington, VA 22203, U.S.A. A13 ANSVAN Standard430-1989, Centr

38、ai Station Air-Handling Units, 1989, American National Standards InstituAir-Cmditiming and Refrigeration Institute, 11 West 42nd Street, New York, NY 10036, U.S.A./4301 North Fairfax Drive, Suite 425, Arlington, VA 22203, U.S.A. A13 ASHRAE Standard 139-1998, Methods of Testing for Rating Desiccant D

39、ehumidifiers Utilizing Heat for the Regeneration Process, 1998, American Society of Heating, Refiigerating, and Air- Conditionhg Engineebs, hc., 1791 Me Circle N.E., Atlanta, GA 30329, U.S.A. A1.4 ASHRAE Terminology of Heating, Ventilation, Air Conditioning and Refigeration, American Society of Heat

40、ing, Refiigerating, and Air-conditioning Engineers, Inc., 1791 Tullie Circle N.E., Atlanta, GA 30329, U.S.A. A15 IEC Standard Publication 38, ZEC Standard Voltages, 1983, Intemational Elemotechnical Commission, rue de Varembe, P.O. Box 131, 1211 Geneva 20, Switzerand. APPENDIX B. REFERENCES - INFORMATIVE None. 5 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-