1、2002 STANDARD for Al R-CON DITION I NG classifications; 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, i
2、ncluding 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 Scope. This standard applies to factory-made Commercial and Industrial Unitary Air-conditioning Condensing U
3、nits greater than or equal to 135,000 Btuh 39.6 kW as defined in Section 3. 2.1.1 Energy Source. This standard applies only to electrically-driven, mechanical compression-type condensing units. 2.2 Exclusions. This standard does not apply to the testing and rating of condensing units for refrigerati
4、on purposes, as defined in ARi Standard 520. Section 3. Definitions All terms in this document shall follow the standard industry definitions in the current edition of ASHFAE Terminology of Heating, Ventilation, A il*-Conditioning and Refiigeration unless otherwise defined in this section. 3.1 Comme
5、rcial and Industrial Unitaiy Air-conditioning Condensing Unit. A factory-made assembly of refrigerating components designed to compress and liquefy a specific refrigerant. It consists of one or more refrigerant compressors, refrigerant condensers (air-cooled, evaporative - cooled, andlor water-coole
6、d), condenser fans and motors (where used) and factory-supplied accessories. 3.2 Cooling Capacity. Cooling capacity is the capacity in Btuh W obtained at specific conditions. It is equal to the increase in total enthalpy between the liquid refrigerant entering the expansion valve and superheated ret
7、urn gas multiplied by the mass flow rate of the refrigerant. 3.3 at a specified pressure. Dew Point. Refrigerant vapor saturation temperature 3.4 Energy Efficiency Ratio (EER). A ratio of the Cooling Capacity in Btu/h to the power input values in watts at any given set of Rating Conditions expressed
8、 in Btu/(W.h). 3.5 Integrated Part-Load Value (IPLV). A single number part-load efficiency figure of merit calculated per the method described in this standard and expressed in Btu/( W.h). 3.6 Published Rating. A statement of the assigned values of those performance characteristics, under stated Rat
9、ing Conditions, by which a unit may be chosen 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 o
10、r published in specifications, advertising, or other literature controlled by the manufacturer, at stated Rating Conditions. 3.6.1 Application Rating. A rating based on tests performed at Application Rating conditions (other than Standard Rating Conditions). 3.6.2 Standard Rating. A rating based on
11、tests performed at Standard Rating Conditions. 3.7 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. 3.1.1 Standard Rating Conditions. Rating Conditions used as the basis of comparison for pe
12、rformance characteristics. 3.8 “Shall“ or “Should. I “Shall“ or “should“ shall be interpreted as follows: 3.8.1 Shall. Where “shall“ or “shall not“ is used for a provision specified, that provision is mandatory if compliance with the standard is claimed. 3.8.2 Should. “Should“ is used to indicate pr
13、ovisions which are not mandatory but which are desirable as good practice. 1 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AR1 STANDARD 365-2002 Designation 3.9 Single Nu
14、mber Rating. The Cooling Capacity and EER determined by averaging the results of the tests at Rating Conditions No. 1 and No. 2 for air-cooled and evaporative-cooled condensing units and at Rating Conditions No. 5 and No. 6 for water-cooled condensing units (Section 6). AN Condenser Arrangement Type
15、 Type i Section 4. Classifications Equipment covered within the scope of this standard shall be classified as shown in Table 1 : Table 1. Classifications of Commercial and Industrial Air-Conditioning Condensing Units Remote Condensing Unit (RCU) wl COMP CON D RCU-E Eva orative I RCU-w I water I I Se
16、ction 5. Test Requirements 5.1 Test Requirements. ,411 Standard Ratings shall be verified by tests conducted in accordance with ANSUASHM Standard 23 and with the test methods and procedures as described in this standard. 5.1.1 An alternate method of verification may be used by tests conducted in acc
17、ordance with ANSUASHM Standard 37 provided that the suction Dew Point temperature and the return gas temperature are determined from the procedures in this standard. Section 6. Rating Requirements 6.1 Standard Ratings. Published Ratings shall be obtained at one or more of the Standard Rating Conditi
18、ons as shown in Table 2. Power input shall be the total power input to the compressor(s), fan(s), controls, and any other components included as part of the condensing unit. 6.1.1 Values of Standard Cooling CapaciS, Ratings. These ratings shall be expressed only in terms of thousands of Btu/h W in m
19、ultiples of2,000 Btu/h 600 W for units with Standard Ratings of 400,000 Btu/h 117,000 W and under. For units with Standard Ratings of over 400,000 Btu/h i 17,000 W, the ratings shall be expressed in multiples of 5,000 Btu/h 1,500 W. .6.1.2 Values of Standard Efficiency Ratings. EER, in Btu/(W.h), an
20、d IPLV shall be expressed in multiples of O. 1. 6.1.3 Single Number. Ratings. The reported values shall be determined by averaging the results obtained at Rating Conditions No. 1 and No. 2 or at Rating Conditions No. 5 and No. 6. 6.1.4 Electrical Conditions. Standard Rating tests shall be performed
21、at the nameplate rated voltage(s) and frequency. For condensing units with dual nameplate voltage ratings, Standard Rating tests shall be performed at both voltages, or at the lower of the two voltages, if only a single Standard Rating is to be published. 6.1.5 Condenser Air Quantity. All Standard R
22、atings for condensing units shall be determined at the condenser air quantity specified by the manufacturer where the fan drive is adjustable. Where the fan drive is direct-connected, Standard Ratings shall be determined at the condenser air quantity established when the condensing unit is operated
23、with all of the associated inlet louvers and any duct work and attachments considered by the manufacturer as normal installation practice. Once established, the condenser air circulation of the condensing unit shall remain unchanged throughout all tests prescribed herein, except as altered by automa
24、tic controls. 6.2 Part-Load Rating. Condensing units which are capable of capacity reduction shall be rated at 100% and at each step of capacity reduction provided by the condensing unit as published by the manufacturer. These rating points shall be used to calculate the IPLV (6.2.2). 6.2.1 Part-Loa
25、d Rating Conditions. The conditions of test for part-load ratings are the same as those for the Standard Ratings (6.1) except for the following: For all units: Refrigerant Entering Condensing Unit Suction Dew Point temperature . . . .50.0F 10.OC Return gas temperature . . . . . . . . . . . . . .65.0
26、F 18.3“CI 2 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AR1 STANDARD 365-2002 Rating I Air Entering and Surrounding Unit Table 2. Standard Ratina Conditions Refrigerant
27、 Entering Condensing Unit 1 Dry-Bulb Condition I Wet-Bulb Suction Dew Point Return Gas i3 23 3 4 95.0 35.0 75.0 23.9 50.0 10.0 65.0 18.3 95.0 35.0 75.0 23.9 40.0 4.4 55.0 12.8 80.0 26.7 67.0 19.4 50.0 10.0 65.0 18.3 80.0 26.7 67.0 19.4 40.0 4.4 55.0 12.8 Rating Condition 53 63 23.9 + Same water flow
28、 rate Water Temperature Entering Leaving “F “C “F “C 85.0 29.4 95.0 35.0 85.0 29.4 95.0 35.0 I as established above. nsing Units Refrigerant Entering Condensing Unit Suction Dew Point “F “C 50 40 50 40 10.0 4.4 10.0 4.4 Return Gas “F “C 65.0 18.3 55.0 12.80 65.0 18.3 55.0 12.8 Notes: The liquid temp
29、erature and pressure leaving the condensing unit shall be reported by the manufacturer in its ratings. Required for evaporative-cooled condensing units only. The Single Number Rating is determined by averaging the results of the tests at Rating Conditions No. 1 and No. 2 or at Rating Conditions No.
30、5 and No. 6. 2 For air-cooled units: Air temperature entering and Surrounding unit 80.O“F 26.7“C dry- bulb (and 67.0 “F 19.4“C wet-bulb when condensate is rejected into the air stream) For evuporutive-cooled units: Air temperature entering and Surrounding unit . 80.O“F 26.7“C dry- bulb 67.O“F 19.4“C
31、 wet-bulb For wuter-cooled units: Water temperature entering condenser .7 5. O “F 2 3.9 O Cl Capacity reduction means may be adjusted to obtain the specified step of unloading. No manual adjustment of condenser air quantities from those of the Standard Rating Conditions shall be made. However, autom
32、atic adjustment of condenser air quantities by condensing unit function is permissible. 6.2.2 Integrated Purt-Loud Vulue (IPLV). For equipment covered by this standard, the IPLV shall be calculated as follows: a. Determine the capacity and EER at the conditions specified in 6.2 b. Determine the Part
33、-Load Factor (PLF) from Figure 1, at each capacity step (see Appendix C) c. Use the following equation to calculate IPLV: Water flow rate Same as Standard Rating Conditions 3 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or
34、 networking permitted without license from IHS-,-,-AR1 STANDARD 365-2002 EER +EER 2) 2 IPLV=(PLF 1- PLF 2) x (EER 2+EER 3) 2 + (PLF -PLF 3)x (EER n-l+EER n) 2 + (PLF n-l -PLF n)X + (PLF n) x (EER n) where: PLF n Superscript I Subscript 2, 3 etc. = Part-Load Factor determined from Figure 1 = Total nu
35、mber of capacity steps = 100% capacity and EER at part- load Rating Conditions = Specific capacity and EER at part- load steps per 6.2 6.3 Tolerances. To comply with this standard, measured test results shall not be less than 95% of Published Ratings for Cooling Capacity, Energy Efficiency Ratio (EE
36、R) and Integrated Part-Load Value (IPLV). Section 7. Minimum Data Requirements for Published Ratings 7.1 Minimum Data Requirements for Published Ratings. As a minimum, Published Ratings shall consist of the following information: a. b. c. Single Number Rating Cooling Capacity, Btu/h Single Number Ra
37、ting Energy Efficiency Ratio, EER, Btu/(W.h) Integrated Part-Load Value, IPLV, Btu/(W.h) WI All claims to ratings within the scope of this standard shall include the statement “Rated in accordance with ARi Standard 365“. All claims to ratings outside the scope of this standard shall include the stat
38、ement “Outside the scope of ARI Standard 365“. Wherever Application Ratings are published or printed, they shall include a statement of the conditions at which the ratings apply. Section 8. Operating Requirements 8.1 Operating Requirements. To comply with this standard, any production Commercial and
39、 Industrial Unitary Air-conditioning Condensing Unit shall meet the requirements detailed herein. 8.2 Maximum Operating Conditions Test. Commercial and Industrial Unitary Air-conditioning Condensing Units shall be designed and produced to pass the following maximum operating conditions tests. For mu
40、lti-capacity units, this test shall be conducted with the units controls set for maximum capacity. 8.2.1 Temperature Conditions. For all units: Air temperature surrounding unit 1 15.0 “F 46.1 “CI dry- bulb (For units or portions thereof intended to be installed only indoors, this temperature may be
41、reduced to 95.0 “F 35.0 “CI dry-bulb.) Refrigerant Entering Condensing Unit Suction Dew Point temperature . 50F iOC Return gas temperature . 65.O“F 18.3“C For water-cooled units: Water temperature entering condenser .90“F 32.2“C Water temperature leaving condenser 100F 37.8“C For air-cooled units: O
42、utside air temperature . 1 15.0 “F 46.1 “CI dry- bulb (and 75.0 “F 23.9 “CI wet-bulb when condensate is rejected to the condenser air stream) at the standard condenser air quantity specified and stated by the manufacturer. 4 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS unde
43、r license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AR1 STANDARD 365-2002 HFlT LOAD FACTOR CURVE PERCENT OF FULL-LMD CAPACITY AT PART-LMD CONDITONS Note: The curve is based on following equation: PLF = AO + (Al x O) + (A2 x O) + (A3 x Q3) + (A4 x O) +
44、 (A5 x O) + (A6 x Q“) where: PLF = Part-Load Factor Q = Percent of full-load capacity at part-load rating conditions. - AO = -0.12773917 x Al = -0.27648713 X A2 = 0.50672449 x lo- A3 = -0.259666% X lo- A4 = 0.69875354 x lo- A5 = -0.76859712 x lo-* A6 = 0.28918272 x lo- Figure 1. Part-Load Factor Cur
45、ve 5 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-,-AR1 STANDARD 365-2002 For evaporative-cooled units: Section 9. Marking and Nameplate Data Outside air temperature . 100
46、.0 “F 37.8“c dry-bulb 80.0 “F 26.7“C wet- bulb Make-up water temperature . 90.0 “F 32.2 “Cl 8.2.2 Voltages. Tests shall be conducted at the range B minimum and maximum utilization voltages from ARI Standard 1 1 O, Table 1, based on the units nameplate rated voltage(s). These voltages shall be suppli
47、ed at the units service connection and at rated frequency. A lower minimum or a higher maximum voltage shall be used, if listed, on the nameplate. 8.2.3 Procedure. 8.2.3.1 The condensing unit shall be operated continuously for two hours at the temperature conditions and voltage(s) specified. 8.2.3.2
48、 All power to the condensing unit shall be shut off for a period sufficient to cause the compressor to stop (not to exceed five seconds) and then be restored. 8.2.4 Requirements. 8.2.4.1 During both tests, the condensing unit shall operate without failure of any of its parts. 8.2.4.2 The unit shall
49、resume continuous operation within one hour of restoration of power and shall then operate continuously for one hour. Operation and resetting of safety devices prior to establishment of continuous operation is permitted. 8.2.4.3 Units with water-cooled condensers shall operate at maximum conditions with a water-pressure drop not to exceed 15.Opsi lo3 Wal, measuredacross the unit. 9.1 Marking and Nameplate Data. As a min
