1、2003 STANDARD for AIR-CONDITIONING 8t REF R I G E RAT1 ON INSTITUTE PERFORMANCE RATING OF CHILLING WATER - PACKAGES USING THE VAPOR COMPRESSION CYCLE Standard 550/590 4100 N. FAIRFAX DR., SUITE 200 ARLINGTON, VIRGINIA 22203 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under
2、 license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-IMPORTANT 60 Hz Power Included in Certification Prokram Water-Cooled Air-Cooled I SAFETY DISCLAIMER Condi tioiis Hermetic -*b Copyright 2003, by Ait-Coiiditioiiiiij aiid Refrigeratioti Iiistitiite Regis
3、tcred Uiiited States Patent atid Tradeinark Office Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-AR1 CERTIFICATION PROGRAM PROVISIONS (CONTINUED) Va ter-Cooled Centrifugai
4、test requirements; rating requirements; niininiuni data requirements for Published Ratings; marking and nameplate data; and conforniance conditions. 1.1.1 inrent. This standard is intended for the guidance of the industry, including manufacturers, engineers, installers, contractors and isers. 1.1.2
5、Review and ,4meiirne/7t. This standard is subject to review and amendment as technology advances. Section 2. Scope 2.1 Scope. This standard applies to factory-made vapor compression refrigeration Water-Chilling Packages including one or more hermetic or open drive compressors. These Water-Chilling P
6、ackages include: Water-cooled, Air-Cooled, or Evaporatively- Air-Cooled or Water-Cooled Heat Reclaim Cooled Condensers, Condensers, Packages supplied without a Condenser. Section 3. Definitions All ternis in this dociiinent follow the standard industry definitions in the current edition of ASHRAE Te
7、rininology of Heating, Ventilation, Air Conclitionirig undRefrigeration unless otherwise defined in this section. 3.1 Bubble Point. Refrigerant liquid sahiration temperature at a specified pressure. 3.2 Cornpressor Saturated Discharge Teniperature. For single component and azeotrope refrigerants, it
8、 is the saturated temperature corresponding to the refrigerant pressure at the compressor discharge. For zeotropic refrigerants, it is the arithmetic average of the Dew Point and Bubble Point teinperahires corresponding to refrigerant pressure at the compressor discharge. It is usually taken at or i
9、mmediately downstream of the compressor discharge service valve (in either case on the downstream side of the valve seat), where discharge valves are used. 3.3 condenses refrigerant vapor. cooling of the refrigerant may OCCLN as well. Cor7densei. A refrigeration system component which Desuperheating
10、 and sub- 3.3.1 Air-Cooled Condenser. A component which condenses refrigerant vapor by rejecting heat to air mechanically circulated over its heattransfer surface causing a rise in the air temperature. 3.3.2 Air-Cooled Heat Reclaim Condenser. A coinponent which condenses refrigerant vapor in the pro
11、cess of rejecting the heat of condensation to air causing a rise in the air temperature. This Condenser niay be a separate Condenser the same as or a portion -of the Air-Cooled Condenser. 3.3.3 Evaporatively-Cooled Conderiser. A component which condenses refrigerant vapor by rejecting heat to a wate
12、r and air mixture mechanically circulated over its heat transfer surface, causing evaporation of the water and an increase in the enthalpy of the air. 3.3.4 Water-Cooled Condenser. A component which utilizes refrigerant-to-water heat transfer means, causing the refrigerant to coiiderise and the wate
13、r to be heated. 3.3.5 Water-Cooled Heat Reclaim Condenser. A component which utilizes reigeraiit-to-water heat transfer means, causing the refrigerant to condense and the water to be heated. This Condenser may be a separate condenser, the saine as, or a portion of the Water-cooled Condenser. 3.4 at
14、a specified pressure. Dew Poinf. Refrigerant vapor sahiration temperature 3.5 Energy Eficieizcy. 3.5.1 Coefficient of Peforinaiice (COP). A ratio of the cooling capacity in watts W to the Total Power Input, in watts W at any given set of Rating Conditions, expressed in watts/watt WIW. 3.5.2 Energy E
15、ficiency Ratio (EER). A ratio of the cooling capacity in Btdh W to the Total Power Input in watts W at any given set of Ratiiig Conditions, expressed in Btu/(W.h). 1 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or networki
16、ng permitted without license from IHS-,-AR1 STANDARD 5501590-2003 3.5.3 Heut Reclaiin Coefficiei7f of Peifoni?ance (COP,R). A ratio of the Net Heat Reclaim Capacity (Btdh) to the Total Power Input to the unit, W converted to Bhdh 3.5.1 Power npzit per Capacity. A ratio of the Total Power input to th
17、e unit, in kW to the Net Refrigerating Capacity at any given set of Rating Conditions, expressed in kWIton kWlkW. 3.6 Foziling Factor. The thermal resistance due to fouling accumulated on the heat transfer surface. 3.6.1 FOdii7g Factor Allowance. Provision for anticipated fouling duririg use specifi
18、ed in h.ft.“F/Btu iii?.“C/W. 3.7 Net Heat Reclaim Criyacity. A quantity defined as the mass flow rate of the condenser water multiplied by the difference in enthalpy of water entering aiid leaving the heat reclaim Condenser, Btu/h kW. 3.5 Net Rejkigerution Capcip. A quantity defined as the mass flow
19、 rate of the evaporator water multiplied by the difference in enthalpy of water entering and leaving the evaporator, Btdh or tons kW. 3.9 Part-Load Vrilue (PL V). A single number figure of merit expressing part-load efficiency for equipment on the basis of weighted operation at various partial load
20、capacities for the equipment. 3.9.1 Integrated Part-Load Value (IPLV). A single number part-load efficiency figure of merit calculated per the method described in this standard at Standard Rating Conditions. 3.9.2 Noil-Sni7nrdPni-t-Load YaiLie (NPL V). A single number part-load efficiency figure of
21、merit calculated per the method described in this standard referenced to conditions other than IPLV conditions. (For units that are not designed to operate at Standard Rating Conditions.) 3.10 Published Ratings. A statement of the assigned values of those performance characteristics, under stated Ra
22、ting 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. The tei-ni Piiblished Rating includes the rating of all performance characteristics shown on the unit or published
23、in specifications, advertising or other literahire controlled by the mailcifacturer, at stated Rating Conditions. 3.10.1 Apy/iccition Rating. A rating based on tests performed at application Rating Conditions (other than Standard Rating Conditions). 3.10.2 Standard Rati17g. A rating based on tests p
24、erfonlied at Standard Rating Conditions. 3.11 Rcrting Conditions. Any set of operating conditions under which a single level of perfonnance results and which causes only that level of performance to occur. 3.1.1 Slfll7dfl1-d Rating Conditions. Ratin; Conditions used as the basis of comparison for pe
25、rformance characteristics. 3.12 Shall“ or “Shozild“. “Shall“ or “should“ shall be interpreted as follows: 3.12.1 Shall. Where “shall“ or “shall not“ is used for a provision speciiied, that provision is inandatory if compliance with the standard is claimed. 3.12.2 Shoiild, “Should“ is used to indicat
26、e provisions which are not mandatory but which are desirable as good practice. 3.13 the unit. Total Power Input. Power input of all coniponents of 3.14 Writer-Chilling Package. A factory-made and prefabricated assembly (not necessarily shipped as one package) of one or inore compressors, Condensers
27、and evaporators, with interconnections and accessories, designed for the purpose of cooling water. It is a machine specifically designed to make use of a vapor compression refrigeration cycle to remove heat from water and reject the heat to a cooling medium, usually air or water. The refrigerant Con
28、denser may or may not be an integral part of the package. 3.14.1 Heat Reclaim Writer-Chilling Package. A factory-made package, designed for the purpose of chilling water and containing a Condenser for reclaiming heat. Where such equipment is provided in inore than one assembly, the separate assembli
29、es are to be designed to be used together, and the requireiEents of rating outlined in this standard are based upon the use of inatched assemblies. It is a package specifically designed to make use of the refrigerant cycle to remove heat froin the refrigerant and to reject the heat to another fluid
30、(air or water) for heating use. Any excess heat inay be rejected to another medium, usually air or water. Section 4. Test Requirements 4.1 Test Requirements. Ratings shall be established at the Rating Conditions specified in Section 5. Ratings shall be verified by tests conducted in accordance with
31、the test method and procedures described in Appendix C. 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 550/590-2003 Section 5. Rating Requirements 5.4.1 Deter
32、riiiiiatioii of Part- Load Petforrilance. For Water-Chilling Packages covered by this standard, the IPLV or NPLV shall be calculated as follows: 5.1 Standard Rntgs. Standard Ratings for all Water- Rating Conditions specified in 5.2. cliilliiig Packages shall be established at the Standard a. 5.2 Str
33、indaid Rotii7g Coiiditions. Water-Chilling Packages shall be rated at conditions specified in Table 1. Heat Reclaim Water-Chilling Packages shall be rated at conditioiis specified in Table 2 and properly identified as the Heat Reclaim Standard Rating. Standard Ratings shall b. include a water-side F
34、ouling Factor Allowance of 0.00025 h.ft.“FIBtu 0.000044 m2.“C/W1 for the Condenser aiid 0.0001 h.ft .“F/Btu O.OOOOi 8m2.“C/W for the evaporator. 5.3 Applicatioi7 Rating Coizditions. Application Ratings should include the following range of Rating Conditions or be within the operating limits of the e
35、quipment: All Condenser Types: Leaving chilled water temperahire 40.0 to 48.O“F 4.4 to 8.9“CI in increments of 2F or less IT or less. Water-cooled Condensers: Entering condenser water temperahire . . . .65 .O to 105.O“F 18.3 to 40.6“C in increments of 5F or less 3“C or less. Air-Cooled Condensers: E
36、ntering Condenser air dry-bulb temperature 55.0 to 125.O“F ITS to 51.7“CI dry-bulb inincrements of 10F or less 6“C or less. Evaporatively-Cooled Condensers: Entering Condenser air wet-bulb teiiiperature 50.0 to 80.O“F 10.0 to 26.7“CI wet-bulb in increments of 2.5“F or less 1.4“C or less. 5.4 Par-Loa
37、d Rating. Water-Chilling Packages which are capable ofcapacity reduction shall be rated at 100% and at each step of capacity reduction provided by the refrigeration system(s) as publislied by the manufacturer. Pai-t-load ratings points shall be presented in one or inore of the following three ways:
38、fPLV- Based on the conditions defined in Table 3. NPL V- Based on the conditions defined in Table 3. Sepcirale Part-Load Data Poiiit(s) Suitable for CaIczlc1tii7g IPLV or NPL V. In addition, other part-load points may also be presented. Deteniiine the part-load energy efficiency at loo%, 7%, 50%, an
39、d 25% load points at the conditions specified in Table 3. Use the following equation to calculate the IPLV or NPLV. IPLV or NPLV = 0.01A + 0.42B + 0.45C +0.12D la For COP and EER: where: A = COP or EER at 100% B = COP or EER at 75% C = COP or EER at 50% D = COP or EER at 25% For kWlton: I IPLV NPLV
40、0.01 0.42 0.45 0.12 or = +-+-+- ABCD where: A = kW1Ton at 100% B = kW1Ton at 75% C = kWlTon at 50% D = kWlTon at 25% lb 5.4.1.1 For a derivation of equations la and Ib, and an example of an IPLV or NPLV calculation, see Appendix D. The weighting factors have been based on the weighted average of the
41、 most coinmon building types and operations using average weather in 29 U.S. cities, with and without airside economizers. 3 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-A
42、RI STANDARD 5501590-2003 - % o E e U O O O 8 a D L G c m N O O O . N 9 - e, c ? W it Y 3 - - 3 o -E z 00 O O O M 5 4 G s O O ! . N c 8 o - 3 Pl E oc O O O 8 a m % . s O O c 8 o - 3 N E CU O O O O d 9 15 m 5 PI G - r O O - 8 - W -0 .- Y 2 L- o m M 4 Copyright Air-Conditioning and Refrigeration Instit
43、ute Provided by IHS under license with ARINot for ResaleNo reproduction or networking permitted without license from IHS-,-AR1 STANDARD 5501590-2003 - - m % . ci s O 9 c, c : dm I 5 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARINot for ResaleNo reproduc
44、tion or networking permitted without license from IHS-,-AR1 STANDARD 5501590-2003 2 I Table 3. Part-Load Conditions for Rating NF 6.7 “C 6.7 “C 0.043 L/s per kW 0.00001 8 In2 . “C/ W 29.4 “C 23.9 “C 18.3 “C 18.3 “C 18.3 “C 0.054 L/s per kW 0.000044 m . “C/ W 35.0 “C 26.7 “C Evcporalor (AI1 Types) 10
45、0% load LWT 0% load LWT Selected LWT Same as 100% load Selected gpmton As Specified Selected EWT 4 4 4 65.0 “F Selected gpmton As Specified Flow Rate (gpiii) F.F.A. I Water-cooled Condenser 100Y0 load EWT 75% load EWT 50% load EWT 25% IoadEWT 0% load EWT Flow rate (gpiii) L/s F.F.A. Air-Cooled Conde
46、nser (Use Figure 2) 100% load EDB 75% load EDB 50% load EDB 25% load EDB 0% load EDB F.F.A. Evoiativeii-Cooled Coiideiuei- 100% load EWB 096 load EWB 100% load SDT 0% load SDT Water and Evaporatively-Cooled Without Coiidenser 100% load SDT c 0% load SDT TD 44.0 “F 44.0 “F 2.4 gpiiton 0.0001 II ft2 .
47、 “F/Btu 85.O“F 75.0 “F 65.0 “F 65.0 “F 65.0 “F 3.0 gpiidton 0.00025 h . ft2 . “F/Btu 95.0 “F 80.0 “F 65.0 “F 55.0 OF 55.0 “F 0.0 h.ft?.“F/Btii 75.0 “F 50.0 “F 0.0 h.ft.“F/B tu 125.0 OF 55.0 “F 105.0 “F 65.0 “F V Selected LWT Same as 100% load L/s per kW As Specified Selected EWT 4 4 4 18.3 “C 3L/s p
48、er kW As Specified 18.3 “C No Rating Requirements 12.8 “C 12.8 “C 23.9 “C 10.0 “C No Rating Requirements 0.0 m?.“C/W No Rating Requirements No Rating Requirements 40.6 “C 18.3 “C If the unit Manufacturers recoinmended minimum temperatures are greater than those specified in Table 3, then those inay
49、be used in lieu of the specified temperatures. Corrected for Foiliii; Factor Allowance by using the calculation method described in C6.3 The flow rates are to be held constant at full load values for all part-load conditions. For part-load entering condenser water temperahires, the temperahire should vary linearly from the selected E
