ARI 700-2006 SPECIFICATIONS FOR FLUOROCARBON REFRIGERANTS.pdf

1、 2006 STANDARD for 4100 NORTH FAIRFAX DR., SUITE 200 ARLINGTON, VIRGINIA 22203 SPECIFICATIONS FOR FLUOROCARBON REFRIGERANTS Standard 700 Copyright Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted withou

2、t license from IHS-,-,-Price $10.00 (M) $20.00 (NM) Copyright 2006, by Air-Conditioning and Refrigeration Institute Printed in U.S.A. Registered United States Patent and Trademark Office IMPORTANT SAFETY DISCLAIMER ARI does not set safety standards and does not certify or guarantee the safety of any

3、 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 and code requirem

4、ents 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 non-hazardous or f

5、ree from risk. This standard supersedes ARI Standard 700-2004. ARI CERTIFICATION PROGRAMS PROVISIONS Scope of the Certification Programs The Reclaimed Refrigerant and Refrigerant Testing Laboratory Certification Programs are based on this standard. The Reclaimed Refrigerant Certification Program inc

6、ludes purity specifications for reclaimed refrigerants. The Refrigerant Testing Laboratory Certification Program includes verification for Refrigerant Testing Laboratories that perform testing of refrigerants to ARI Standard 700. Certified Ratings The following ratings are verified by test for the R

7、eclaimed Refrigerant Certification Program: a. Water (ppm by weight). b. Chloride (pass/fail). c. Acidity (ppm by weight). d. High Boiling Residue (% by volume). e. Particulates/Solids (pass/fail). f. Non Condensables (% by volume). g. Volatile Impurities Including Other Refrigerants (% by volume).

8、The following contaminants are verified by test for the Refrigerant Testing Laboratory Certification Program: a. Water (ppm by weight). b. High Boiling Residue (% by volume). c. Non Condensables (% by volume). d. Volatile Impurities Including Other Refrigerants (% by volume). Copyright Air-Condition

9、ing, Heating 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 1. Purpose .1 Section 2. Scope 1 Section 3. Definitions 1 Section 4. Characterization of Refrigera

10、nts and Contaminants 1 Section 5. Sampling and Summary of Test Procedures .2 Section 6. Reporting Procedure.4 Section 7. Conformance Conditions4 TABLES Table 1A. Characteristics of Single Component Refrigerants and their Maximum Allowable Levels of Contaminants 5 Table 1B. Characteristics of Zeotrop

11、ic Blends (400 Series Refrigerants) and their Maximum Allowable Levels of Contaminants 8 Table 1C. Characteristics of Azeotropic Blends (500 Series Refrigerants) and their Maximum Allowable Levels of Contaminants 14 APPENDICES Appendix A. References - Normative15 Appendix B. References - Informative

12、 15 Appendix C. “Analytical Procedures“ for ARI Standard 700 - Normative available under separate cover. Copyright Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright

13、 Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 700-2006 1 SPECIFICATIONS FOR FLUOROCARBON REFRIGERANTS Section 1. Purpose 1.1 Purpose. The purpose of this st

14、andard is to establish purity specifications, to verify composition, and to specify the associated methods of testing for acceptability of fluorocarbon refrigerants regardless of source (new, reclaimed and/or repackaged) for use in new and existing refrigeration and air-conditioning products within

15、the scope of ARI. 1.1.1 Intent. This standard is intended for the guidance of the industry including manufacturers, reclaimers, repackagers, distributors, installers, servicemen, contractors and users of fluorocarbon refrigerants. 1.1.2 Review and Amendment. This standard is subject to review and am

16、endment as technology advances or as additional data becomes available. This data can be submitted to ARI for review. Section 2. Scope 2.1 Scope. This standard specifies acceptable levels of contaminants (purity requirements) for fluorocarbon refrigerants (hereinafter referred to as refrigerants) re

17、gardless of source and lists acceptable test methods. These refrigerants are: R-11; R-12; R-13; R-22; R-23; R-32; R-113; R-114; R-115; R-116; R-123; R-124; R-125; R-134a; R-141b; R-142b; R-143a; R-152a; R-218; R-227ea; R-236fa; R-245fa; R-401A; R-401B; R-402A; R-402B; R-403A; R-403B; R-404A; R-405A;

18、 R-406A; R-407A; R-407B; R-407C; R-407D; R-407E; R-408A; R-409A; R-409B; R-410A; R-410B; R-411A; R-411B; R-412A; R-413A; R-414A; R-414B; R-415A; R-415B; R-416A; R-417A; R-418A; R-419A; R-420A; R-421A; R-421B; R-422A; R-422B; R-422C; R-422D; R-423A; R-424A; R-425A; R-426A; R-500; R-502; R-503; R-507A

19、; R-508A; R-508B; and R-509A as referenced in the ANSI/ASHRAE Standard 34 with Addenda.Section 3. Definitions All terms in this document follow the standard industry definitions in the current edition of ASHRAE Terminology of Heating, Ventilation, Air Conditioning and Refrigeration unless otherwise

20、defined in this section. 3.1 “Shall“ or “Should“. “Shall“ or “should“ shall be interpreted as follows: 3.1.1 Shall. Where “shall“ or “shall not“ is used for a provision specified, that provision is mandatory if compliance with the standard is claimed. 3.1.2 Should. “Should“ is used to indicate provi

21、sions which are not mandatory but which are desirable as good practice. Section 4. Characterization of Refrigerants and Contaminants 4.1 Characterization. Characterization of refrigerants and contaminants are listed in the following general classifications: a. Water b. Chloride c. Acidity d. High bo

22、iling residue e. Particulates/solids f. Non condensables g. Volatile impurities including other refrigerantsIdentification of the refrigerant and volatile impurities shall be carried out by gas chromatography (GC). Copyright Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under

23、 license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 700-2006 2 Section 5. Sampling and Summary of Test Procedures 5.1 Referee Test. The referee test methods for the various contaminants are summarized in the following paragraphs. Detailed

24、 test procedures are included in Appendix C to ARI Standard 700. If alternative test methods are employed, the user shall be able to demonstrate that they produce results at least equivalent to the specified referee test method. 5.2 Refrigerant Sampling. 5.2.1 Sampling Precautions. Special precautio

25、ns should be taken to ensure that representative samples are obtained for analysis. Sampling shall be done by qualified personnel following accepted sampling and safety procedures. Refrigerants with critical temperatures near or below ambient temperature cannot be reliably sampled for both liquid an

26、d vapor phase without special handling. 5.2.2 Cylinder Preparation. Place a clean, empty sample cylinder with the valve open in an oven at 110C for one hour. Remove it from the oven while hot, immediately connect it to an evacuation system and evacuate it to less than 56 kPa. Close the valve and all

27、ow it to cool. Weigh the empty cylinder. 5.2.3 Vapor Phase Sampling. A vapor phase sample shall be obtained for determining the non condensables. The source temperature shall be measured and recorded at the time the sample is taken. Non condensable gases, if present, will concentrate in the vapor ph

28、ase of the refrigerant; care must be exercised to eliminate introduction of either air or liquid phase refrigerant during the sample transfer. Since R-11, R-113, R-123, R-141b, and R-245fa have normal boiling points near or above room temperature, non condensable determination is not required for th

29、ese refrigerants. 5.2.3.1 Special Handling for Low Critical Temperature Refrigerant. A vapor phase sample is required to determine non condensables and volatile impurities, including other refrigerants. The vapor phase sample is obtained by regulating the sample container temperature to 5 K or more

30、above the refrigerant critical temperature. 5.2.4 Liquid Phase Sampling. A liquid phase sample is required for all tests listed in this standard except the test for non condensables.5.2.4.1 Liquid Sampling. Accurate analysis requires that the sample cylinder, at ambient temperature, be filled to at

31、least 60% by volume; however, under no circumstances should the cylinder be filled to more than 80% by volume. This can be accomplished by weighing the empty cylinder and then the cylinder with refrigerant. When the desired amount of refrigerant has been collected, close the valve(s) and immediately

32、 disconnect the sample cylinder. NOTE: Care should be taken to ensure that all connections and transfer lines are dry and evacuated to avoid contaminating the sample. 5.2.4.2 Special Handling for Low Critical Temperature Refrigerant. A liquid phase sample is required for all testing except non conde

33、nsables and volatile impurities, including other refrigerants. The liquid phase sample is obtained by regulating the sample cylinder temperature to 2 C below the critical temperature of the refrigerant. NOTE: If free water is present in the sample, cooling to below 0 C may result in the formation of

34、 ice. 5.2.4.3 Record Weight. Check the sample cylinder for leaks and record the gross weight. 5.3 Refrigerant Identification. The required method shall be gas chromatography as described in Appendix C to ARI Standard 700. The chromatogram of the sample shall be compared to known standards. Copyright

35、 Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 700-2006 3 5.4 Water Content. 5.4.1 Method. The Coulometric Karl Fischer Titration, as described in Appendix C

36、, shall be used for determining the water content of refrigerants. This method can be used for refrigerants that are either a liquid or a gas at room temperature. For all refrigerants, the sample for water analysis shall be taken from the liquid phase of the container to be tested. 5.4.2 Limits. The

37、 value for water content shall be expressed in parts per million (ppm) by weight and shall not exceed the maximum specified in Tables 1A, 1B, and 1C. 5.5 Conductivity. (Alternative to Chloride and Acidity Tests). 5.5.1 Method. A refrigerant may be tested for conductivity as an indication of the pres

38、ence of acids, metal chlorides, and any compound that ionizes in water. This alternative procedure is intended for use with new or reclaimed refrigerants, however, significant amounts of oil can interfere with the test results. 5.5.2 Limits. The value for conductivity shall be converted to and expre

39、ssed in ppm by weight calculated as HCl and shall be compared with the maximum acidity value specified (see in Tables 1A, 1B, and 1C). If the conductivity is above this amount, then the Chloride and Acidity Tests shall be conducted. If the conductivity is not greater than this amount, then the Chlor

40、ide and Acidity Tests may be omitted. 5.6 Chloride. 5.6.1 Method. The refrigerant shall be tested for chloride as an indication of the presence of hydrochloric acid and/or metal chlorides. The referee procedure is intended for use with new or reclaimed refrigerants; however, high boiling residue in

41、excess of the amounts in Tables 1A, 1B, and 1C can interfere with the test results. The test method shall be that described in Appendix C to ARI Standard 700. The test will show noticeable turbidity at chloride levels of about 3 ppm or greater by weight. 5.6.2 Limits. The results of the test shall n

42、ot exhibit any sign of turbidity. Report the results as “pass“ or “fail.“ 5.7 Acidity. 5.7.1 Method. The acidity test uses the titration principle to detect any compound that is soluble in water and ionizes as an acid. The test method shall be that described in Appendix C to ARI Standard 700. This t

43、est may not be suitable for determination of high molecular weight organic acids; however, these acids will be found in the high boiling residue test outlined in 5.8. The test requires a 100 to 120 gram sample and has a detection limit of 0.1 ppm by weight calculated as HCl. 5.7.2 Limits. The value

44、for acidity shall be expressed in ppm by weight as HCl and shall not exceed the limits in Tables 1A, 1B, and 1C. 5.8 High Boiling Residue. 5.8.1 Method. High boiling residue shall be determined by measuring the residue from a standard volume of refrigerant after evaporation. Oils and/or organic acid

45、s will be captured by this method. An alternative gravimetric method is described in Appendix C to ARI Standard 700. 5.8.2 Limits. The value for high boiling residue shall be expressed as a percentage by volume and shall not exceed the maximum percent specified in Tables 1A, 1B, and 1C. 5.9 Particul

46、ates and Solids. 5.9.1 Method. A measured amount of sample shall be placed in a Goetz bulb under controlled temperature conditions. The particulates/solids shall be determined by visual examination of the Goetz bulb prior to the evaporation of refrigerant. For details of this test method, refer to P

47、art 3 of Appendix C to ARI Standard 700. Copyright Air-Conditioning, Heating and Refrigeration Institute Provided by IHS under license with ARI Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-ARI STANDARD 700-2006 4 5.9.2 Limits. Visual presence of dirt, rust or ot

48、her particulate contamination is reported as “fail.“ 5.10 Non Condensables. 5.10.1 Method. A vapor phase sample shall be used for determination of non condensables. Non condensable gases consist primarily of air accumulated in the vapor phase of refrigerants where the solubility of air in the refrig

49、erant liquid phase is extremely low and air is not significant as a liquid phase contaminant. The presence of non condensable gases may reflect poor quality control in transferring refrigerants to storage tanks and cylinders. The test method shall be gas chromatography with a thermal conductivity detector as described in Appendix C to ARI Standard 700. 5.10.2 Limits. The maximum leve