1、2000 STANDARD for A I R-CON D IT10 N I NG test requirements; rating requirements; minimum data requirements for Published Ratings; marking and nameplate data; and conformance conditions. 1.1.1 Intent. This standard is intended for the guidance of the industry, including manufacturers, engineers, ins
2、tallers, contractors and users. 1.1.2 Review and Amendment. This standard is subject to review and amendment as technology advances. 3.2.2 Standard Rating. A rating based on tests performed at Standard Rating Conditions. 3.3 Rating Conditions. Any set of operating conditions under which a single lev
3、el of performance results and which causes only that level of performance to occur. 3.3.1 Application Rating Conditions. Ratings based on tests performed at conditions other than those specified in 5.2.1. 3.3.2 Standard Rating Conditions. Rating conditions used as the basis of comparison of performa
4、nce characteristics. 3.4 “Shall“ or “Should“. “Shall“ or “should“ shall be interpreted as follows: Section 2. Scope 2.1 Scope. This standard applies to factory-made Ice Storage Bins as defined in Section 3. 2.2 Exclusion. The storage efficiency requirements do not apply to automatic dispensing machi
5、nes or to cold plate drink dispensers. Section 3. Definitions Dejnitions. Ail 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 this section. 3.1
6、Ice Storage Bin. A factory-made assembly (not necessarily shipped in one package) which consists of anon- refigerated compartment for storage of ice. 3.2 Published Rating. A statement ofthe assigned values of those performance characteristics, under stated rating conditions, by which a unit may be c
7、hosen to fit its application. These values apply to all units of like nominal size and type (identification) produced by the same manufacturer. As used herein, the term Published Rating includes the rating of all performance characteristics shown on the unit or published in specifications, advertisi
8、ng or other literature controlled by the manufacturer, at stated rating conditions. 3.2.1 Application Rating. A rating based on tests performed at Application Rating Conditions (other than Standard Rating Conditions). 3.4.1 Shall. Where “shall“ or “shall not“ is used for a provision specified, that
9、provision is mandatory if compliance with the standard is claimed. 3.4.2 Should. “Should“ is used to indicate provisions which are not mandatory but which are desirable for good practice. 3.5 Theoretical Storage CapaciQ. The theoretical maximum mass of ice that the Ice Storage Bin can hold, lb kgl.
10、3.6 Theoretical Storage Effectiveness. A theoretical expression of the fiaction of ice that under specific rating conditions would be expected to remain in the Ice Storage Bin 24 hours after it is produced, % Section 4. Test Requirements 4.1 Method of Testing. Ice Storage Bins shall be tested for ra
11、ting in accordance with Appendix C. 4.1.1 Equipment. Ice Storage Bins shall be tested using all components as recommended by the manufacturer. Where units are offered with legs, the unit shall be tested with the legs on. Section 5. Rating Requirements 5.1 Published Ratings. Published Ratings shall i
12、nclude Standard Ratings, and may also include Application Ratings. 5.2 Standard Ratings. Standard Ratings shall be established at the Standard Rating Conditions specified in 1 COPYRIGHT Air-Conditioning and Refrigeration InstituteLicensed by Information Handling ServicesAR1 STANDARD 820-2000 5.2.1.
13、Standard Ratings shall be verified by tests as required in Section 4. 5.2.1 Standard Rating Conditions. The conditions of test for Theoretical Storage Effectiveness are as follows: Ambient temperature. . .90.0F 32.2”C Initial ice temperature . . . .32”F O.O”C 5.2.2 Values of Standard Ratings. Standa
14、rd Ratings shall include the Theoretical Storage Capacity of the Ice Storage Bin and the Theoretical Storage Effectiveness. 5.2.2.1 Theoretical Storage CapaciQ. The Theoretical Storage Capacity of the Ice Storage Bin, lb kg, is determined by using the bins internal volume multiplied by 80% multiplie
15、d by 30.0 lb/ft3 480 kg/m3. The Theoretical Storage Capacity shall be expressed in multiples of 10 lb 4.5kg. 5.2.2.2 Theoretical Storage Effectiveness. The Theoretical Storage Effectiveness shall be expressed to the nearest 1%. 5.3 Application Rating Conditions. Ratings at conditions other than thos
16、e specified in 5.2.1 may be published as Application Ratings and shall be based on data determined by the methods of testing prescribed in Section 4. Section 6. Minimum Data Requirements for Published Ratings 6.1 Minimum Data Requirements for Published Ratings. Published Ratings shall include all St
17、andard Ratings. Ail claims to ratings within the scope of this standard shall include the verbiage “Rated in accordance with ARI Standard 820”. Ail claims to ratings outside the scope of this standard shall include the verbiage “Outside the scope of ARI Standard 820”. Wherever Application Ratings ar
18、e published or printed, they shall include a statement of the conditions at which the ratings apply. Section 7. Marking and Nameplate Data 7.1 Marking and Nameplate Data. As a minimum, the nameplate shall display the manufacturers name and model designation. Section 8. Conformance Conditions 8.1 Con
19、formance. While conformance withthis standard is voluntary, conformance shall not be claimed or implied for products or equipment within its Purpose (Section 1) and Scope (Section 2) unless such claims meet all of the requirements of the standard. 5.4 Tolerance. To comply with this standard, Publish
20、ed Ratings shall be based on data obtained in accordance with the provisions of Sections 4 and 5 of this standard, and shall be such that any production unit, when tested, will have a Theoretical Storage Capacity no lower than its Published Rating and a Theoretical Storage Effectiveness not less tha
21、n 95% of its Published Rating. 2 COPYRIGHT Air-Conditioning and Refrigeration InstituteLicensed by Information Handling ServicesAR1 STANDARD 820-2000 APPENDIX A. REFERENCES - NORMATIVE Al Listed here are all standards, handbooks, and other Al.l ASHAE Terminology of Heating, publications essential to
22、 the formation and implementation Ventilation, Air-Conditioning and Refrigeration, of the standard. Ail references in this appendix are Second Edition, 199 1 , American Society of Heating, considered as part of this standard. Refigerating and Air-conditioning Engineers, Inc., 1791 Tullie Circle N.E.
23、, Atlanta, GA 30329, U.S.A. APPENDIX B. REFERENCES - INFORMATIVE B1 Listed here are standards, handbooks and other B1.l ARI Standard 810-2000, Automatic publications which may provide useful information and Commercial Ice-Makers, 2000, Au-Conditioning and background but are not considered essential.
24、 References in Refigeration Institute, 4301 North Fairfax Drive, this appendix are not considered part of the standard. Suite 425, Arlington, VA 22203, U.S.A. 3 COPYRIGHT Air-Conditioning and Refrigeration InstituteLicensed by Information Handling ServicesAR1 STANDARD 820-2000 APPENDIX C. METHOD OF
25、TEST OF ICE STORAGE BINS - NORMATIVE C1 Purpose and Scope. C4 Data to be Recorded. C1.l Purpose. The purpose of this appendix is to specify the method to be used when testing Ice Storage Bins, to specify the type of instrumentation and test apparatus required in testing, to specify methods of calcul
26、ating results and to specify data to be recorded. C2 Instrumentation and Apparatus. Measurements of the internal dimensions, to determine the internal volume of the Ice Storage Bin, shall be accurate to within 0.03 in lmml. The allowable tolerances on test conditions and performance measurements for
27、 Ice Storage Bins are specified below: Item Dimensions Ambient air temperature Ice temperature Ice mass Meltage-water mass Elapsed time Tolerance 10.03 in fi mm 11.0“F 10.6“C 11.0“F 10.6“C f 1 .O% f 1 .O% 160 s C3 Test Method. C3.1 Measured Volume. Measure the internal dimensions and calculate the v
28、olume of the Ice Storage Bin. C3.2 Theoretical Storage Efectiveness. The unit undergoing test shall be exposed to the ambient temperature for at least 2 hours prior to the addition of ice. A quantity of cube-ice equal to the Theoretical Storage Capacity, at the specified initial ice temperature, sha
29、ll be added to the Ice Storage Bin through the ice-maker opening. The ice-maker opening shall be sealed closed with rigid foam insulation having a thermal resistance of R30 &I 5.31. a. b. d. e. f. g- h. C. Ice Storage Bin manufacturer and brand name Model number and serial number Internal dimensions
30、, in mm Initial weight of ice, lb kg 2-hour (stabilization) meltage weight, lb kg 4-hour (test) meltage weight, lb kg Ambient temperature, OF “CI Initial ice temperature, OF “CI C5 Calculations. C5.1 Theoretical Storage CapaciQ. The Theoretical Storage Capacity, lb kg, is determined as follows: ct=
31、Axv,xB where: ct = Theoretical Storage Capacity, lb kg A = Assumed 80% factor = 0.8 v, = Measured volume, ft3 m3, the gross internal volume ignoring baffles of the Ice Storage Bins B = Assumed density of ice = 30 lb/ 480 wm31 C5.2 Theoretical Storage Efectiveness. The Theoretical Storage Effectivene
32、ss shall be determined as follows: (4 -M2 -6Mq) e= x 100% S (Wi - M2 ) where: e, = %-hour Theoretical Storage Effectiveness, % Wi = Initial weight of ice, lb kg M2 = Meltage weight fiom hour O to 2 in test, lb M4 = Meltage weight fiom hour 2 to 6 in test, lb kgl kgl Note: 6M4 represents the calculated 24-hour meltage total. Meltage water fiom the bin drain shall be captured and weighed 2 hours after the bin was filled and again after an additional 4 hours have elapsed. 4 COPYRIGHT Air-Conditioning and Refrigeration InstituteLicensed by Information Handling Services
