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    FORD WSH-M17B19-A-2002 TETRAFLUOROETHANE REFRIGERANT TO BE USED WITH FORD WSS-M99P1111-A 《四氟乙烷制冷剂 与标准FORD WSS-M99P1111-A一起使用 》.pdf

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    FORD WSH-M17B19-A-2002 TETRAFLUOROETHANE REFRIGERANT TO BE USED WITH FORD WSS-M99P1111-A 《四氟乙烷制冷剂 与标准FORD WSS-M99P1111-A一起使用 》.pdf

    1、 ENGINEERING MATERIAL SPECIFICATION Material Name Specification Number Date Action Revisions 2002 10 11 Revised Updated and renumbered 1992 06 10 CE001E10109215 Revised C.C. Gray 1990 08 20 885100 308 Released C.C. Gray Printed copies are uncontrolled Page 1 of 2 Copyright 2002, Ford Global Technolo

    2、gies, Inc. TETRAFLUOROETHANE REFRIGERANT WSH-M17B19-A 1. SCOPE The material defined by this specification is a 1,1,1,2-tetrafluoro-ethane refrigerant (HFC-134a). 2. APPLICATION The material was released originally as the refrigerant fluid for automotive air conditioning units. This is the refrigeran

    3、t of choice to replace dichlorodifluoromethane (CFC-12). 3. REQUIREMENTS 3.1 STANDARD REQUIREMENTS FOR PRODUCTION MATERIALS Material suppliers and part producers must conform to the Companys Standard Requirements For Production Materials (WSS-M99P1111-A). 3.2 APPEARANCE Clear, colorless liquid gas 3

    4、.3 CHARACTERIZATION 3.3.1 Boiling Point, at 760 mm Hg - 26.3 +/- 0.2 C (ASTM D 2887, modified) 3.3.2 Boiling Range, max 0.5 C (for 15 % to 85 % by volume distilled) The test method shall be that described in the Federal Specification for Fluorocarbon Refrigerants, BB-F-1421B Section 4.4.3. Gas Chrom

    5、atography (GC) is an acceptable alternate test method which can be used to characterize this refrigerant. 3.4 CONTAMINANTS LIQUID PHASE 3.4.1 Water Content, max 10 ppm (ASTM E 700) 3.4.2 Chloride Ions Pass Test Method: Add 5 mL of absolute methyl alcohol and 3 - 4 drops of a saturated silver nitrate

    6、-alcohol solution to 50 mL Nessler tube, or similar container. Add 5 mL of liquid refrigerant and allow the solution to stand for a few minutes. Any precipitate or turbidity shall constitute a failure. 3.4.3 Acidity by Weight, max 1.0 ppm (ASTM D 2989) ENGINEERING MATERIAL SPECIFICATION WSH-M17B19-A

    7、 Page 2 of 2 Copyright 2002, Ford Global Technologies, Inc. 3.4.4 High Boiling Residue, by volume, max 0.01 % Test Method: Measure the residue after evaporation of a standard volume of refrigerant at a temperature 10.0 C above the boiling point of the sample using a Goetz tube as specified in Federa

    8、l Specification BB-F-1421B. 3.4.5 Particulates/Solids Pass During the Boiling Range test, a measured amount of sample is evaporated from the Goetz bulb under controlled conditions. The particulates/solids shall be determined by visual examination of the empty Goetz bulb after the sample has evaporat

    9、ed completely. Presence of dirt, rust or other particulate contamination is reported as “fail“. 3.5 CONTAMINANTS VAPOR PHASE 3.5.1 Non-Condensables, by volume, max 1.5 % The test method shall be that described in the Federal Specification for Fluorocarbon Refrigerant BB-F-1421B Section 4.4.2 (perchl

    10、oroethylene method). Gas Chromato-graphy is an acceptable alternate test method. 3.5.2 Purity, min 99.8 % (Vapor Phase Gas Chromatography Method) 4. GENERAL INFORMATION The information below is provided for clarification and assistance in meeting the requirements of this specification. 4.1 REFERENCE STANDARDS ARI Standard 700-88 Air Conditioning & Refrigeration Institute 1501 Wilson Boulevard Arlington, Virginia 22209


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