1、MIL-H-22832B MIL-H-22832A 22 September 1964 MILITARY SPECIFICATION HEAT INTERCHANGERS, REFRIGERANT 12 This specification is approved for use by all Department and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers commercial, liquid to suction gas heat interchangers
2、 for use with refrigerant 12 (dichlorodifluoromethane) . 1.2 Classification. The heat interchangers shall be of the following sizes as specified (see 6.2): Size 1 2 3 4 5 6 7 8 - Capacity (minimum) Tons of Refrigeration (T.R) 1112 116 114 113 112 3 I4 1 2 2. APPLICABLE DcuMENTS * 2.1 The following d
3、ocuments of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein: SPECIFICATIONS FEDERAZ, WW-T-799 - Tube, Copper, Seamless, (For Use With Solder-Joint or Flared-Tube Fittings) . FSC 4130 Provided by IHSNot for R
4、esaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-H-22 832B PPP-B-566 - Boxes, Folding, Paperboard. PPP-B-621 - Boxes, Wood, Nailed and Lock-Corner. PPP-B-636 - Boxes, Shipping, Fiberboard. PPP-B-676 - Boxes, Set-up, Paperboard. MILITARY MIL-L-10547 - Liners, Case, and
5、Sheet, Overwrap; Water-Vaporproof or Waterproof, Flexible. STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by MIL-STD-129 - Marking for Shipment and Storage. MS 17241 - Heat Interchanger, Refrigerant Type 12. Attribut es. (Copies of specifications and standards require
6、d by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) * 2.2 Other publications, The following documents form a part of this specification to the extent specified herein. Unless a specific issue is i
7、dentified, the issue in effect on date of invitation for bids or request for proposal shall apply: Underwriters Laboratories, Inc. (IL) No. 207 (c) - Ref rigerant-Containing Components (Application for copies should be addressed to the Underwriters Labora- tories, Inc., 207 East Ohio Street, Chicago
8、, Illinois 60611; Walt Whitman Road, Melville, L.I. New York 11749 or,1655 Scott Blvd., Santa Clara, California 95050.) National Motor Freight Traffic Association, Inc., Agent National Motor Freight Classification (Application for copies should be addressed to the American Truckin Associations, Inc.
9、, Tariff Order Section, 1616 P Street, N.W., Washin,:on, D.C. 20036.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-22832B L(3 W 7779906 0233607 5 MIL-H-22832B Uniform Classification Comittee, Agent Uni f om Freight Ci ass if i cat ion (App
10、lication for copies should be addressed to the Uniform Classification Comittee, Room 1106, 222 South Riverside Plaza, Chicago, Illinois 60606 .) (Technical society and technical association specifications and standards are generally available for reference from libraries. distributed among technical
11、 groups and using Federal agencies.) They are also 3. REQUIREMENTS * 3.1 First article. When specified (see 6.2), the supplier shall furnish a sample for first article inspection and approval (see 4.2, and . 6.3). * 3.2 Standard product. The heat interchangers delivered under this specification shal
12、l be the manufacturers standard comercial product, except for any changes necessary to meet specification requirements. Component parts of the heat interchanger need not be the product of the same manufacturer . 3.3 Codes and standard. Heat interchangers shall conform to the applicable requirements
13、of UL Standard No. 207 (c). * 3.3.1 Certification. Prior to approval of the first article if one is submitted, or prior to comencing production, the supplier shall submit to the contracting officer of his authorized representative satisfactory evidence that the heat interchangers he proposes to furn
14、ish under this specification meet the applicable requirements of UL Standard No. 207 (c). Acceptable evidence of meeting the requirements of this standard shall be the L label, or a UL listing mark certified test report from a recognized independent testing laboratory, indicating that the heat inter
15、changers offered conform to the requirements of UL Standard No. 207 (c). * 3.4 Materials. Materials not definitely specified shall be of the quality normally used by the manufacturer for heat interchangers provided the completed item complies with all provisions of this specification. 3.4.1 Copper.
16、Copper tubing shall conform to type K or L of WW-T-799. 3.5 Deeim and construction. The heat interchangers shall be designed The The liquid and constructed in accordance with MS 17241 and as specified herein. gas circuit shall be arranged to eliminate entrapment of oil. circuit and gas nipples shall
17、 be fabricated of the copper tube specified in 3.4.1. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-H-22832B 3.5.1 Capacity. The heat interchanger shall have the capacities indicated in 1.2 under the conditions specified on MS 17241 (see 4.4.
18、1). * 3.6 Identification marking. The manufacturers name or identifiable trade name, shall be clearly stamped, embossed, or etched on a securely attached corrosion-resistant metal plate. plate, a pressure-sensitive label or waterproofed decalcomania may be used. In addition, the heat interchanger sh
19、all be marked as required by UL Standard No. 207 (c). In lieu of the metal identification 3.7 Finish. The heat interchanger shall have the manufacturers standard comercial finish. burrs, slivers, or splinters. The finished heat interchanger shall not have any sharp * 3.8 Workmanship. The finished pr
20、oduct shall not be fractured, split, punctured, dented, or malformed, adherent and shall not have any pinholes. Soldering shall be complete, clean, and 4. QUALITY ASSURANCE PROVISIONS * 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is r
21、esponsible for the performance of all inspection requirements as specified herein. specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection require- ments specified herein, unless disapproved by the Government. Government
22、 reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as otherwise The * 4.2 First article. When a first article is required, it shall be examined for
23、 the defects listed in table I and for dimensions specified herein, and tested as specified in 4.4. Failure of any test shall be cause for rejection of the first article. listed in table I, or any dimension not within specified requirements shall be cause for rejection of the first article. The pres
24、ence of any defects * 4.3 Inspection. Sampling for inspection shall be performed in accordance with MIL-STD-105, except where otherwise indicated hereinafter. * 4.3.1 Component and material inspection, In accordance with 4.1 above, components and materials shall be inspected and tested in accordance
25、 with all the requirements of referenced specifications, drawings,-and standards unless otherwise excluded, amended, modified, or qualified in this specifi- cation or applicable purchase document. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.3.2
26、 In-process inspection. Examination shall be made that the gas circuit is arranged to eliminate entrapment of oil as specified in 3.5. Whenever nonconformance is noted, correction shall be made to the affected items and lot in process. * 4.3.3 End item inspection. The lot shall consist of all the he
27、at interchangers of one size offered for inspection at one time. The sample unit foi: the inspection shall be one heat interchanger. * 4.3.3.1 Visual examination. Examination shall be made of the heat interchanger for defects set forth in table I. be level II with an acceptable quality level (AOL) o
28、f 2.5 for major defects and 6.5 for total defects, expressed in terms of defects per hundred units. The inspection level shall TABLE I. Classification of defects C1 as s i f i cat i on Examine Defect Piajor Minor Standard product Item not in accordance with manufacturers standard product except for
29、changes necessary to comply with specification requirements X Finish Finish not manufacturers standard Sharp burrs, slivers, splinters, or t Y Pe rough edges X X Construction, work- Fractured, split, punctured, dented, manship (applicable malformed X to all components Part mis sing x and assemblies)
30、 Soldering Soldering not clean (flux or flux residue not removed); pin holes in solder, not complete , not adherent X Marking Identification marking missing, not legible, not specified type, not affixed in the prescribed manner X 5 Provided by IHSNot for ResaleNo reproduction or networking permitted
31、 without license from IHS-,-,-MIL-H-22832B * 4.3.3.2 Dimensional examination. Examination shall be made of the end item to determine compliance with dimensional requirements. not within the specified requirements shall be classified a defect. tion level shall be S-4 and the AQL shall be 2.5 expresse
32、d in terms of defects per hundred units. Any dimension that is The inspec- * 4.3.3.3 End item testing. When a first article is not required, one unit from the initial production lot shall be tested as specified in 4.4.1. nonconformance with specified requirements shall be cause for rejection of the
33、lot, Any * 4.3.4 Examination of preparation for delivery. An examination shall be made to determine that packaging, packing, and marking as required by section 5 of this specification are complied with. table II. The sample unit shall be one shipping container fully prepared for delivery. The lot sh
34、all be the number of containers offered for inspection at one time. The inspection level shall be S-2 with an AQL of 4.0, expressed in terms of defects per hundred units. Defects shall be as indicated in TABLE II. Preparation for delivery defects Examinat ion Defect Markings Omitted; incorrect; ille
35、gible; of improper size, location, sequence or method of application. Mat erial s Component missing, damaged, or otherwise defective. Wo rkmanship Inadequate application of components such a$ incomplete closure of case liners. Contents Content per container is more or less than required. * 4.3.4.1 E
36、xamination of shipping containers. When shipping containers are required to be in accordance with PPP-B-636 or PPP-B-621, examination for defects in closure, waterproofing, and strapping shall be in accordance with the applicable container specification. * 4.4 Tests. 4.4.1 Capacity test, pliance wit
37、h 3.5.1. tion system having the T. R. capacity of the heat interchanger to be tested. A capacity test shall be performed to determine com- The heat interchanger shall be connected to a refrigera- 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-
38、H-22832B When the system is placed into operation the heat interchanger shall be ob- served to insure that it has the capacity and capability of raising the suction gas temperature from minus 5 Fahrenheit (F), at a pressure corresponding to minus 10“ F. saturated, to plus 30“ F. superheated leaving
39、temperature, with the entering liquid temperature not higher than 100 F. liquid circuit pressure drop shall be negligible. The gas circuit pressure drop shall not exceed 1/4 pound per square inch (psi) at minus 10“ F. evaporating temperature and 1/2 psi at plus 25“ F. evaporating temperature. During
40、 the test, the 5. PREPARATION FOR DELIVERY 5.1 Packaging. 5.1.1 Level A. Packaging shall be level A or C as specified (see 6.2). Each heat interchanger shall be packaged in a snug-fitting fiberboard, folding paperboard, or Set-up paperboard box conforming to style RSC (end opening) or FPF, type CF o
41、r SF, class domestic, variety optional of PPP-B-636; style III, type B, class a or style IV, type A or B, class a of PPP-B-566; or type I, grade A, class A, style 2 of PPP-B-676. Closure shall be in accordance with the appendix of the applicable box specification. 5.1.2 Level C. Heat interchangers s
42、hall be packaged in accordance with industrys practice. 5.2 Packing, Packing shall be level A, B, or C as specified (see 6.2). * 5.2.1 Level A. Heat interchangers, packaged as specified in 5.1, shall be packed in the quantity as specified in table III in a snug-fitting fiber- board or nailed wood sh
43、ipping container conforming to style RSC, V3c or V3s of PPP-B-636, except that the weight limitation shall not be exceeded, or class 2, style 2 or 4 of PPP-B-621, respectively. Each fiberboard shipping container shall be closed, waterproofed by means of tape, and reinforced with flat steel strapping
44、 or tape banding in accordance with the appendix of the container specification. Each nailed wood shipping container shall be pro- vided with a type I or II, grade C case liner conforming to MIL-L-10547, and closed and strapped in accordance with the appendix of the container specifi- cat ion. TABLE
45、 III. Quantity of heat interchangers per container Quantity per Size shipping container 72 60 24 24 24 12 6 6 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-H-22832B L1L W 9999906 02L36LY 7 W MIL-H-22832B * 5.2.2 Level B. Heat interchangers,
46、packaged as specified in 5.1, shall be packed in the quantity as specified in table III in a snug-fitting fiberboard shipping container conforming to style RSC, type CF or SF, class domestic, variety optional of PPP-B-636. of the container specification. Closure shall be in accordance with appendix
47、5.2.3 Level C. Heat interchangers, packaged as specified in 5.1, shall be packed in a manner to insure carrier acceptance and safe delivery at destination at the lowest transportation rate for such supplies. accordance with Uniform Freight Classification Rules or National Motor Freight Rules, as app
48、licable. Containers shall be in 5.3 Marking. In addition to any special marking required by the contract or order, interior packages and shipping containers shall be marked in accord- ance with MIL-STD-129. 6. NOTES 6.1 Intended use. The heat interchangers covered by this specification are intended
49、for use on portable or stationary mechanical refrigeration systems. * 6.2 Ordering data. Procurement documents should specify the following: (a) Title, number, and date of this specification. (b) Size required (see 1.2). (c) When a first article is required (see 3.1, 4.2, and 6.3). (d) Selection of applicable levels of packaging and packing (see 5.1 and 5.2). * 6.3 First article. When a first article is required, it shall be inspected a
