1、I INCH-POUND 1 29 March 1999 SUPERSEDING 28 July 1993 MIL-PW-14516G MIL-H-145 16F PERFORMANCE SPECIFICATION HEATER, SPACE - BARRACKS, TENT, NON-POWERED, LIQUID FUEL This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1,l Scope. This specifica
2、tion covers the performance and acceptance requirements for a non- powered, liquid fuel burning, 60,000 BTU, radiant space heater for use in barracks, shelters, or tents. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification
3、; This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements docu
4、ments cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issues of the documents are those listed in the issue of the Depa
5、rtment of Defense Index of Specifications and Standards (DoDISS) cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues of the documents cited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions) an
6、d any pertinent data which may be of use in improving this document should be addressed to: Commander, U.S. Army Natick Research, Development, and Engineering Center, Natick, MA 01760-501 8 by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this documen
7、t, or by letter. AMSC NIA FSC 4520 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-PRF-LSIIG I 99Ob 2089474 348 e Military Symbol Ambient Temperature Range PF) F MIL-PW- 145 1 6G STANDARDS DEPARTMENT OF DEFENSE MIL-STD-8 1 O - Environmental Test
8、 Methods and Engineering Guidelines (Vnless otherwise indicated, copies of the above standard are available Tom the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191 11-5094) 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subje
9、cted to a first article inspection in accordance with 4.1.1. 3.2 Conformance. A sample shall be subjected to conformance inspection in accordance with 4.1.2. 3.3 Operating requirements. The heaters shall satis the following user-oriented requirements. 3.3.1 Operation. The heater shall operate with a
10、ll specified fuels and under all specified conditions herein with no electrical power. 3.3.2 Ignition. The heaters shall not require any electrical power for ignition. Ignition shall be accomplished safely in ten minutes or less. 3.3.3 Monitoring. The heaters shall incorporate a means for viewing th
11、e entire combustion flame during operation. 3.3.4 Liquid fuel. The heaters shall be safely operated with all of the fuels listed in Table I. I DF-2 I above 25 OF I above 10 OF above -60 OF above -60 OF 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
12、,-MIL-PRF-1451bG 9999Ob 2089475 284 II Ambient (O F) 40 MIL-PW- 145 16G Fuel output (low) Output (high) DF2 30,000 BTUHr 50,000 BTU/Hr 3.3.5 Fuel sup. The heaters shall be easily operated and set up by personnel attired in clothing appropriate for all intended user environments. The heater shall be
13、capable of being assembled for operation in 20 minutes or less, and disassembled and repacked for storage by two people in 15 minutes or less in any climatic category specified herein. 3.5 Environmental requirements. The heater shall operate as Specified under the following environmental conditions.
14、 3.5.1 Storage. The heater and accessories shall remain operable and show no signs of impairment due to storage at 155“ F for 4 hours daily. 3.5.2 Basic climate, The heater and accessories shall be operable in temperatures of +6O“ F to O“ F. Heat outputs shall be in accordance with Table II. 3.5.3 B
15、asic cold. The heater and accessories shall be in temperatures of -5 F to -25“ F. Heat outputs shall be in accordance with Table II. 3.5.4 High altitude. The heaters shall operate safely at a minimum of 85% rated capacity when operated at altitudes of 4,000 feet above sea level. 3.6 Interface requir
16、ements. The heater shall meet the following interface and interoperability requirements. 3 -6.1 Thermo-electric fan intefiace. The heater shall accommodate placement of the thermo- electric fan unit (see figure 1), so that it is positioned to direct air downward. An indented area shall be provided f
17、or placement of the base of the fan (see figure 2). The indented area shall provide sufficient heat transfer to the fan base to achieve a temperature of 500 “F - 600 “F at the fan module surface. If necessary, a spacer shall be permanently located on the indented area to position the fan base above
18、the heater surface to prevent over heat damage, while maintaining enough heat to achieve the required module temperature. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-PRF-1451bG 99999Ob 2089479 92T E MIL-PRF-14516G FRONT .DW 8.5 inches high
19、 overall TOP VIEW 14.25 inch diameter BASE PLATE 0.5 inches high 5.25 inch diameter FIGURE 1. Thermo-Electric Fan Indented Location Spacer (approximate) on Heater Surface (section of standard steel pipe, 2 1/2“ nominal O.D. by .07“ wall thickness and .20 high, welded to heater surface) FIGURE 2. TEF
20、 interface location and typical spacer. 3.6.2 Fuel interface. During test of 4.5.2 the heater shall operate on DF2 conforming to A- A-52557. During test of 4.5.3, the heater shall operate on JP8 conforming to MIL-DTL-83133. During all operational tests herein, the fuel can used for the fuel supply s
21、hall conform to MIL-C- 53109. 3.6.3 Tent interface. The heaters shall be compatible for operation in the General Purpose Medium tent, MIL-T-1712. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-L451bG IB 797770b 2087480 L4L II Fuel supply F
22、uel control OdOff switch MIL-PRF- 145 16G 3.3.5 4.3.5 X 3.3.6 4.3.6 X X 3.3.7 4.3.7 X X 4. VERTFICATION 4.1 Classification of insuections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.1.1). b. Conformance inspection (see 4.1.2). 4.1.1 Fir
23、st article inspection. When a first article inspection is required (see 3.1 and 6.2), the heater shall undergo the tests and examinations outlined in table III. Sampling for first article inspection shall be as specified in the contract or purchase order. 4.1.2 Conformance inspection. Conformance in
24、spections shall be conducted according to the tests specified in table III. Sampling for conformance inspection shall be as specified in the contract or purchase order (see 3.3 and 6.2). 4.1.3 End item examination. Each heater shall be examined for the requirements specified in Table III. Any redesi
25、gn or modification following failure to meet the specified requirements shall receive particular attention for adequacy and suitability. This element of inspection shall encompass all visual examinations and dimensional measurements. 4.2 Verification methods. Verification methods can include visual
26、examination, measurement, testing, simulation, modeling, engineering evaluation, component properties analysis, certification, and similarity to previously approved or previously qualified designs. 4.2.1 Verification alternatives. The contractor may propose alternative test methods, techniques, or e
27、quipment, including application of statistical process control, tool control, or cost-effective sampling procedures to verifl performance. 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF- 145 16G High altitude Interface requirements Thermo-
28、electric fan 3.5.4 4.5.4 X 3.6 4.6 3.6.1 4.6.1 X Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I interface Fuel interface 3.6.2 MIL-PRF-14516G 4.6.2 X 4.3. ODeratine reauirements verification. All operating requirements shall be verified as follows
29、. 4.3.1 ODeration inspection. Veri proper operation during all performance and reliability testing specified herein. Any use of electrical power for operation shall constitute a failure. 4.3.2 Ignition inspection. Observe heater on start. Failure of heater to operate using a match as an ignition sou
30、rce shall constitute a failure. Failure of the heater to be operating within specified smoke and efficiency readings within 15 minutes after lighting under any environmental condition specified herein, shall constitute a failure. 4.3.3 Monitoring inspection. Observe the heater during operation. Inab
31、ility to view entire flame through a sight glass or similar means shall constitute a failure. 4.3.4 Liquid fuel verification. Veri fuel compatibility during environmental climate testing of 4.5.2, and 4.5.3. Veri fuels do not degrade any heater components such as fuel lines and gaskets during reliab
32、ility testing. 4.3.5 Fuel sumlv inspection. During environmental and reliability testing determine adequacy of siphon arrangement for safe usage, visually inspect fuel can for signs of heat damage and measure fuel temperature at all times to veri safe temperature below flash point. 4.3.6 Fuel contro
33、l test. Determine adequacy of the fuel control during environmental climate testing of 4.5.2, and 4.5.3. Operate the heaters over the full range of settings. Measure heat output as outline in Appendix A for each setting. Failure of the flow rate and heat output to incrementally increase shall consti
34、tute a test failure. Measure the smoke level per Appendix A over the range of settings during the climatic tests of 4.5.2, and 4.5.3. Any smoke readings greater than #4 for over 30% of the range of settings shall constitute a failure. Presence of an unsafe over fire condition during testing as evide
35、nced by black smoke exiting the exhaust stack, pulsing, sputtering or backfiring of the heater or excessive sooting shall constitute a failure. During test of 4.3.2, measure flow rate to the heater at setting 4 after 1 hour of operation and record. After one more hour of operation at a constant ambi
36、ent temperature with the tent doors closed and at a fuel control setting 4, measure the flow rate to the heater. An increase greater than 10% over the previous reading shall constitute a failure. 4.3.7 Odoff switch test. Connect a buret in-line with a gravity feed fuel supply line to the fuel contro
37、l. After the heater has been operating for a minimum of 10 minutes, turn the ordoff 10 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-PRF-L45LbG 8 7Ob 2089483 350 6 MIL-PRF-14516G switch to the off position and observe flow rate in the buret. F
38、ailure of fuel flow to stop immediately upon activation of the off switch shall constitute a failure. 4.3.8 Fuel filtering inspection. Observe condition of filtering device after reliability testing. Any heater shut downs related to particles bypassing the fuel filtering device or the device rusting
39、 and preventing fuel flow shall constitute a failure. Failure to remove and replace the filtering device for cleaning in less than 15 minutes using only common hand tools shall constitute a failure. 4.3.9 Combustion efficiencv test. During environmental testing of 4.5.2, and 4.5.3, after durability
40、testing, every 24 hours during reliability testing, and as required, measure efficiency per procedure outlined in Appendix A. Any readings lower than 60% while the heater is operating at 50,000 BTU/Hr or higher shall constitute a test failure. 4.3.10 Smoke test. During environmental testing of 4.8.2
41、 and 4.8.3, after durability testing, and every 24 hours during reliability testing, measure smoke readings per procedure outlined in Appendix A. Any readings greater than a #4 during any required firing rate shall constitute a failure. 4.3.1 1 Heat outuut test. See 4.5.2,4.5.3 4.3.12 Exhaust pipe i
42、nspection. Inspect for presence of type I or type II exhaust pipe assembly. 4.3.12.1 Type I exhaust pipe inspection. Inspect heater during operation and verifj that the exhaust pipe will pass through the opening in the GP medium tent. Veri the presence of an exhaust pipe cap with guy lines or other
43、means to keep exhaust pipe from blowing off in windy conditions. 4.3.12.2 Type II exhaust pipe inspection. Inspect for the complete exhaust pipe assembly per 3.3.12.1, including smoke jack assembly when specified (see 6.2). 4.3.12.3 Smoke jack assembly inspection. Inspect for complete smoke jack ass
44、embly per 3.3.12.3. 4.3.13 Tilt test. Operate the heater. After the heater has stabilized tilt the heater 2 degrees and operate for a minimum of 15 minutes. Failure of the heater to continue normal safe operation shall constitute a failure. Perform this test a total of four times, tilting the heater
45、 in both directions on the two bottom orthogonal axes. 4.3.14 Sdety inspection. Observe test records and performance of all test and inspections within this performance specification. Inspect heater system documentation for adequacy of 11 Provided by IHSNot for ResaleNo reproduction or networking pe
46、rmitted without license from IHS-,-,- MIL-PRF-L45LbG eai q77qqOb 2089484 217 m C MIL-PRF- 145 1 6G safety infomiation. Presence of any hazards, injury to personnel or damage to equipment or property resulting from testing shall constitute a failure. 4.3.14.1 Fuel flow insuection. Veri fuel flow stop
47、s entering the combustion area during a flame loss condition. 4.3.14.2 Burner inspection. Veri no raw fuel accumulates in the combustion area of the heater after shut off or during operation. 4.3.14.3 Exhaust test. Test for, at a minimum, carbon dioxide, carbon monoxide, ammonia, nitrogen dioxide an
48、d formaldehyde while the heater is set up and operated in a GP Medium tent using the Type I exhaust pipe inan ambient temperature of 40“ F. The heaters shall operate for a minimum of 8 hours and all doors shall be closed during testing with no one entering the tent during the test. Any readings abov
49、e the TLV-TWA as established by the ACGIH shall constitute a failure. The test shall be conducted using JP-8 fuel. 4.3.14.4 Sharp edges. Visually inspect the heater. Presence of any non-functional sharp edges shall constitute a failure. 4.3.14.5 Noise. Operate the heater at the high fire rate. Measure sound levels at a 3-foot distance around the outside of the heater on four sides and the top.
