1、 2007 STANDARD for 4100 N. FAIRFAX DR., SUITE 200 ARLINGTON, VIRGINIA 22203 PERFORMANCE RATING OF SOLENOID VALVES FOR USE WITH VOLATILE REFRIGERANTS Standard 760 Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking
2、permitted without license from IHS-,-,-Price $15.00 (M) $30.00 (NM) Printed in U.S.A. Copyright 2007, by Air-Conditioning and Refrigeration Institute Registered United States Patent and Trademark Office IMPORTANT SAFETY DISCLAIMER ARI does not set safety standards and does not certify or guarantee t
3、he safety of any products, components or systems designed, tested, rated, installed or operated in accordance with this standard/guideline. It is strongly recommended that products be designed, constructed, assembled, installed and operated in accordance with nationally recognized safety standards a
4、nd code requirements appropriate for products covered by this standard/guideline. ARI uses its best efforts to develop standards/guidelines employing state-of-the-art and accepted industry practices. ARI does not certify or guarantee that any tests conducted under its standards/guidelines will be no
5、n-hazardous or free from risk. Note: This standard supersedes ARI Standard 760-2001. Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-TABLE OF CONTENTS SECTION PAGE Section
6、 1. Purpose 1 Section 2. Scope .1 Section 3. Definitions .1 Section 4. Test Requirements.2 Section 5. Rating Requirements .2 Section 6. Minimum Data Requirements for Published Ratings4 Section 7. Marking and Nameplate Data4 Section 8. Conformance Conditions.4 TABLES Table 1. Standard Rating Conditio
7、ns.3 APPENDICES Appendix A. References - Normative.5 Appendix B. References - Informative .5 Appendix C. Method of Testing for Rating Solenoid Valves for Maximum Operating Pressure Differential (MOPD) - Normative 6 TABLES FOR APPENDICES Table C1. Pressure-tap Hole Diameters and Lengths 8 FIGURES FOR
8、 APPENDICES Figure C1. Typical System Piping for Solenoid Valve MOPD Test with Gas or Liquid .7 Figure C2. Typical Electrical Test Apparatus for an Alternating Current Solenoid Valve 9 Figure C3. Typical Electrical Test Apparatus for a Direct Current Solenoid Valve.10 Copyright Air-Conditioning and
9、Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-This page is intentionally blank. Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduct
10、ion or networking permitted without license from IHS-,-,-ARI STANDARD 760-2007 1 PERFORMANCE RATING OF SOLENOID VALVES FOR USE WITH VOLATILE REFRIGERANTS Section 1. Purpose 1.1 Purpose. The purpose of this standard is to establish for Solenoid Valves: definitions; test requirements; rating requireme
11、nts; 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, installers, contractors and users. 1.1.2 Review and Amendment. This standard is
12、subject to review and amendment as technology advances. Section 2. Scope 2.1 Scope. This standard applies to Solenoid Valves for use with Volatile Refrigerants as defined in Section 3. Section 3. Definitions All terms in this document follow the standard industry definitions in the current edition o
13、f ASHRAE Terminology of Heating, Ventilation, Air Conditioning and Refrigeration unless otherwise defined in this section. 3.1 Bubble Point. Refrigerant liquid saturation temperature at a specified pressure. 3.2 Dew Point. Refrigerant vapor saturation temperature at a specified pressure. 3.3 Main. T
14、ubing or piping by which the Solenoid Valve is connected to the apparatus. 3.4 Maximum Operating Pressure Differential (MOPD). The maximum pressure difference between the solenoid valve inlet and the solenoid valve outlet at which the Solenoid Valve will operate, psi kPa. 3.5 Pressure Drop. The pres
15、sure difference between the solenoid valve inlet and the solenoid valve outlet with the main port (orifice) open, psi kPa. 3.6 Published Rating. A statement of the assigned values of those performance characteristics, under stated Rating Conditions, by which a unit may be chosen to fit its applicati
16、on. These values apply to all units of like nominal size and type (identification) produced by the same manufacturer. The term Published Rating includes the rating of all performance characteristics shown on the unit or published in specifications, advertising or other literature controlled by the m
17、anufacturer, 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 tests performed at Standard Rating Conditions. 3.7 Rating Conditions. Any set of op
18、erating conditions under which a single level of performance results and which causes only that level of performance to occur. 3.7.1 Standard Rating Conditions. Rating Conditions used as the basis of comparison for performance characteristics. 3.8 “Shall“ or “Should.“ “Shall“ or “should“ shall be in
19、terpreted as follows: Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 760-2007 2 3.8.1 Shall. Where “shall“ or “shall not“ is used for a provision specified,
20、that provision is mandatory if compliance with the standard is claimed. 3.8.2 Should. “Should“ is used to indicate provisions which are not mandatory but which are desirable as good practice. 3.9 Solenoid Valve. A valve which is actuated by the magnetic action of an electrically energized coil. The
21、opposite action is accomplished by gravity, pressure or spring action. 3.9.1 Direct-Action Solenoid Valve. A valve in which the magnetic power of an electrically energized coil moves the main port (orifice) closure member. 3.9.2 Normally Closed Solenoid Valve. A valve which is closed when de-energiz
22、ed. When the coil is electrically energized, the closure member is moved away from and off the port (orifice) to cause the opening action. 3.9.3 Normally Open Solenoid Valve. A valve which is open when de-energized. When the coil is electrically energized, the closure member is moved toward and onto
23、 the port (orifice) to cause the closing action. 3.9.4 Pilot-Operated Solenoid Valve. A valve in which the motion of a direct-acting member allows a pressure difference to occur across the main port (orifice) closure member, causing it to move. 3.10 Solenoid Valve Capacity. The mass flow rate of a f
24、luid through the Solenoid Valve, equated to tons of refrigeration kW at the specified conditions. Section 4. Test Requirements 4.1 Capacity Tests. All capacity tests shall be in accordance with the test procedure outlined in ANSI/ASHRAE Standard 158.1. 4.2 MOPD Tests. All MOPD tests shall be in acco
25、rdance with the test procedure in Appendix C. 4.2.1 If the Solenoid Valve MOPD depends on the valve position, the valve shall be tested in all positions for which the ratings apply. Section 5. Rating Requirements 5.1 Rating Requirements. Published capacity ratings shall consist of Standard Ratings a
26、nd may include Application Ratings. The ARI Standard Ratings of Solenoid Valve Capacity for Volatile Refrigerants shall be stated in tons of refrigeration kW and at the conditions specified in Table 1 5.2 Standard Rating Conditions. Standard ratings shall be for liquid service applications of soleno
27、id valves per Table 1. 5.2.1 Liquid Service Solenoid Valve Entrance Conditions. a. Saturated Condensing (Dew Point) Temperature: 110F 43.3C b. Liquid Service Temperature: 100F 37.8oC c. Saturated Evaporating (Bubble Point) Temperature: 40oF 4.4oC 5.2.2 Pressure Drop Values. 5.2.2.1 Liquid Service. T
28、he Pressure Drop across the Solenoid Valve shall be the closest integer value in psi kPa equivalent to a 1.0 F 0.6 C drop in saturation temperature. o o5.2.3 In no case shall the Pressure Drop be less than required for proper operation of the Solenoid Valve. Table 1. Standard Rating Conditions Copyr
29、ight Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 760-2007 3 Liquid Service Solenoid Valve Entrance Condition Saturated Condenser (Dew Point) Temperature Liquid Serv
30、ice Temperature F 110 100 C 43.3 37.8 Pressure Drop Across Valve Closest integer psi equivalent to 1.0 F 0.6C drop in saturated pressure Enthalpy Expansion point enthalpy based on 100 F 37.8C liquid refrigerant entering the liquid service valve and vapor at a dew point pressure corresponding to 40F
31、4.4C leaving the evaporator. 5.2.4 The solenoid valve capacity ratings for refrigerant liquid service shall be based on the method described in C4.1. 5.2.5 Expansion Point Enthalpy (hf). Enthalpy based on 100oF 37.8oC liquid refrigerant entering the liquid service Solenoid Valve. 5.2.6 Enthalpy of t
32、he Refrigerant Suction Gas (hg). Enthalpy based on vapor at a dew point pressure corresponding to 40oF 4.4oC leaving the evaporator. 5.3 MOPD Ratings. MOPD ratings shall be obtained in accordance with 4.2 and Appendix C, and shall be stated in psi kPa. 5.3.1 If the solenoid valve MOPD depends on the
33、 valve orientation, then it shall be rated for the orientation that results in the lowest MOPD pressure. 5.4 Application Ratings. Application Ratings give performance data at operating conditions other than those given above. Applications Ratings shall contain all information shown in 6.2. Published
34、 Ratings shall be subject to the tolerances of this standard. 5.4.1 Liquid Service. 5.4.1.1 In addition to ARI standard capacity ratings at pressure drop values specified in Table 1, capacity ratings may also be given at other pressure drop values, provided that they are specified as such and based
35、on all the other conditions given in 5.2. 5.4.2 Suction Service. 5.4.2.1 The Pressure Drop shall be 1.0 psi 6.9 kPa for all refrigerants unless the manufacturers stated lowest pressure differential is greater than 1.0 psi 6.9 kPa for satisfactory operation. 5.4.2.2 Solenoid Valves requiring greater
36、than 1.0 psi 6.9 kPa pressure differential shall show an ARI Standard Rating at the manufacturers stated lowest pressure differential required for satisfactory operation. 5.4.2.3 Enthalpy of the Refrigerant Suction Gas (hg). Enthalpy based on vapor at a dew point pressure corresponding to 40oF 4.4oC
37、 leaving the evaporator. 5.4.3 Discharge Gas Service. 5.4.3.1 The Pressure Drop shall be 2.0 psi 14 kPa for all refrigerants. 5.4.3.2 Discharge Gas Temperature. The temperature that would result from isentropic compression from the saturated evaporator (Dew Point) temperature with 25.0oF 13.9oC supe
38、rheat, to a saturated condensing (Bubble Point) temperature of 110oF 43.3oC with 50.0oF 27.8oC added as an approximation of the actual polytropic refrigerant compression process. 5.4.3.3 In addition to the Standard Rating at a 2.0 psi 14 kPa Pressure Drop, Application Ratings for discharge gas servi
39、ce may be published for the following pressure drop values: 5.0 34, 10.0 68.9, 25.0 172, 50.0 344, 75.0 517, 100 689 psi kPa, for all refrigerants. Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted with
40、out license from IHS-,-,-ARI STANDARD 760-2007 4 5.5 Tolerances. To comply with this standard, measured test results shall not be less then 95% of published capacity rating. Section 6. Minimum Data Requirements for Published Ratings 6.1 Minimum Data Requirements for Published Ratings. As a minimum,
41、Published Ratings shall include all Standard Ratings. All claims to ratings within the scope of this standard shall include the statement “Rated in accordance with ARI Standard 760.” All claims to ratings outside the scope of this standard shall include the statement “Outside the scope of ARI Standa
42、rd 760.” Wherever Applications Ratings are published or printed, they shall include a statement of the conditions at which the ratings apply. 6.2 Published Ratings. Published Ratings shall include the following information: a. MOPD, psi kPa (See 5.3.1, when MOPD varies with valve orientation) b. Ref
43、rigerant designation(s) per ANSI/ASHRAE 34 with Addenda c. ARI standard capacity rating(s) d. Model designation e. Line connections (size and type) f. Electrical characteristics: voltage(s), V; frequency(s), Hz (if alternating current); and power, W g. Manufacturers name and address Section 7. Marki
44、ng and Nameplate Data 7.1 Marking and Nameplate Data. As a minimum, each Solenoid Valve shall be marked with the following information: a. The manufacturers name or trade name b. Model designation c. Electrical characteristics: voltage(s), V; frequency(s), Hz (if alternating current); and power, W d
45、. MOPD, psi kPa (See 5.3.1, when MOPD varies with valve orientation) 7.1.1 For voltage ranges covered by ARI Standard 110 or IEC Standard 60038, nameplate voltages for 60 Hertz systems shall include one or more of the equipment nameplate voltage ratings shown in Table 1 of ARI Standard 110, and name
46、plate voltages for 50 Hertz systems shall include one or more of the utilization voltages shown in Table 1 of IEC Standard 60038. 7.1.1.1 Voltage ratings not covered by ARI Standard 110 or IEC Standard 60038, are permitted. Section 8. Conformance Conditions 8.1 Conformance. While conformance with th
47、is standard is voluntary, conformance shall not be claimed or implied for products or equipment within the standards Purpose (Section 1) and Scope (Section 2) unless such claims meet all of the requirements of the standard and all of the testing and rating requirements are measured and reported in c
48、omplete compliance with the standard. Any product that has not met all the requirements of the standard shall not reference, state, or acknowledge the standard in any written, oral, or electronic communication. Copyright Air-Conditioning and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 760-2007 5 APPENDIX A. REFERENCES - NORMATIVE A1 Listed here are all standards, handbooks and other publications essential to the formation and implemen
