1、Designation: D7651 10D7651 17Standard Test Method forGravimetric Measurement of Particulate Concentration ofHydrogen Fuel1This standard is issued under the fixed designation D7651; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, th
2、e year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope1.1 This test method is primarily intended for gravimetric determination of particulates particulate concentrati
3、on in hydrogenintended as a fuel for fuel cell or internal combustion engine powered vehicles. This test method describes operating and qualitycontrol procedures required to obtain data of known quality satisfying the requirements of SAE J2719 and the California Code ofRegulations, Title 4, Division
4、 9, Chapter 6, Article 8, Sections 4180 4181. The levels of precision and accuracy stated. J2719.This test method can be applied to other gaseous samples requiring determination of particulates provided the users data qualityobjectives are satisfied.1.2 The values stated in SI units are to be regard
5、ed as standard. No other units of measurement are included in this standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practices and determi
6、ne the applicability of regulatorylimitations prior to use.1.4 This international standard was developed in accordance with internationally recognized principles on standardizationestablished in the Decision on Principles for the Development of International Standards, Guides and Recommendations iss
7、uedby the World Trade Organization Technical Barriers to Trade (TBT) Committee.2. Referenced Documents2.1 ASTM Standards:2D4150 Terminology Relating to Gaseous FuelsD7650 Test Method for Sampling of Particulate Matter in High Pressure Hydrogen used as a Gaseous Fuel with an In-StreamFilterE617 Speci
8、fication for Laboratory Weights and Precision Mass Standards2.2 SAE Standards:3SAE J2719 Hydrogen Quality Guideline for Fuel Cell Vehicles, April 2008SAE J2600 Compressed Hydrogen Surface Vehicle Refueling Connection DevicesSAE J2719 Hydrogen Quality Guideline for Fuel Cell Vehicles2.3 Other Standar
9、ds:California Code of RegulationsFederal Regulations, , Title 4, Division 9, Chapter 6,Article 8, Sections 4180 4181Title 40, Part50, Appendix L, Section 8.24ISO 14687146872 Hydrogen fuel - Product specification - Part 1: All applications except proton 2: Proton exchangemembrane (PEM) fuel cell appl
10、ications for road vehicles53. Terminology3.1 Acronyms:3.1.1 FCVHydrogen Fuel Cell Vehicle1 This test method is under the jurisdiction of ASTM Committee D03 on Gaseous Fuels and is the direct responsibility of Subcommittee D03.14 on Hydrogen and FuelCells.Current edition approved July 1, 2010Nov. 1,
11、2017. Published August 2010December 2017. Originally approved in 2010. Last previous edition approved in 2010 asD765110. DOI: 10.1520/D765110.10.1520/D765117.2 For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of AS
12、TM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from SAE International (SAE), 400 Commonwealth Dr., Warrendale, PA 15096-0001, http:/www.sae.org.4 Available from Office of Administrative Law 300 Capitol Mall, Suite 1250 Sacramento, CA 9581
13、4-4339the Federal Register, 800 N. Capitol St., NW Suite 700Washington, DC 20001.5 Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, Case postale 56, CH-1211, Geneva 20, Switzerland, http:/www.iso.ch.This document is not an ASTM standard and is intended o
14、nly to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current ver
15、sionof the standard as published by ASTM is to be considered the official document.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States13.1.2 PSAHEPAParticulate sampling adapter for sampling particulate in hydrogen fuel. High Efficiency Pa
16、rticulate Air3.1.3 PEMPolymer Electrolyte Membrane, also called Proton Exchange Membrane3.1.4 PEMFCProton Exchange Membrane Fuel Cell3.1.5 PTFEPolytetrafluoroethylene3.1.6 SAESociety of Automotive EngineeringSAE International3.2 Definitions:3.2.1 contaminantimpurity that adversely affects the compon
17、ents within the fuel cell system or the hydrogen storage system3.2.2 densityMass per unit of volume of the fuel gas or air being considered.3.2.3 fuel cell hydrogenhydrogen satisfying the specifications in SAE J2719.For definitions of general gaseous fuel terms usedin this practice, refer to D4150.3
18、.2.1 weight monitoring filter, WMFThis filter is put inside the glove box or clean room (7.3) with the balance (7.1) and notremoved from the glove box (never removed. 7.3). The weight of this filter is always measured before and after each measurementevent.3.3 SAE J2719Informational Report on the de
19、velopment of a hydrogen quality guideline for fuel cell vehicles. This reportspecifies PEM FCV hydrogen fuel quality from the fueling nozzle.3.4 SAE J2600 Compressed Hydrogen Surface Vehicle Refueling Connection DevicesThis document specifies the designrequirements for nozzles and receptacles used i
20、n high pressure hydrogen applications such as delivery from a fueling station to aFCV4. Summary of Test Method4.1 This procedure is for the weight determination of filters before and after collection of particulates contained withintestmethod is used to determine the concentration of particulate mat
21、ter and nonvolatile reside on filters collected from hydrogen fuelor other gaseous streams at fueling station dispenser nozzles (Test Method D7650, SAE J2600) or other gaseous fuel deliverysystem dispenser interfaces. The particulate concentration is determined by dividing the particulate weight, wh
22、ich is the differenceof filter weights before and after sampling, by the total volume of hydrogen or other gaseous fuelfuels passing through athe filter.Every precaution should be taken to avoid contamination of particulates 10 m or larger onto the filter coming from the PSA,particulate sampling ada
23、pter, the analytical system, ambient air, filter handling, or other environmental sources.5. Significance and Use5.1 Low operating temperature fuel cells such as proton exchange membrane fuel cells (PEMFCs) require high purity hydrogenfor maximum material performance and lifetime. Measurement of par
24、ticulates in hydrogen is necessary for assuring a feed gas ofsufficient purity to satisfy fuel cell and internal combustion system needs as defined in SAE J2719. The particulates in hydrogenfuel for FCVs fuel cell vehicles (FCV) and gaseous hydrogen powered internal combustion engine vehicles may ad
25、versely affectpneumatic control components, such as valves, or other critical system components. Therefore, the concentration of particulatesin the hydrogen fuel should be limited as specified by ISO 14687,14687-2, SAE J2719, or other hydrogen fuel qualityspecifications.5.2 Although not intended for
26、 application to gases other than hydrogen fuel, techniques within this test method can be appliedto gas samples requiring determination of particulate matter.concentration.6. Interferences6.1 Particulate matter 10 m or larger originating in the environment or equipmenton the filter from sources othe
27、r than thehydrogen fuel will interfere with the determination of total particulate matter collected on the filter. particulate concentration. Everyprecaution should be taken to avoid contamination of particulates 10 m or larger onto the filter coming from the PSA, particulatesampling adapter, the an
28、alytical system, ambient air, filter handling, or other environmental sources.6.2 To minimize contamination ofon the filters from body moistureoils and oils,moisture, wear powder-free gloves whilehandling filters outside of the glove box.filters.6.3 Moisture content Humidity may affect polytetrafluo
29、roethylene (PTFE) filter weight, even though the polytetrafluoroethylene(PTFE) filter is hydrophobic. weight. Filters should be equilibrated for a minimum of 24 h hours (h) in a controlled environmentprior to weighing. For reference, U.S. EPA filter conditioning requirements for PM10 samples are a t
30、emperature range of 25 C(6 3 C) 21 6 2 C and a humidity range of 20 to 30% RH (6 5% RH).35 6 5% relative humidity (RH).D7651 1727. Apparatus7.1 BalanceThe balance must measure to 10-5 g. The balance shouldhave a readability of 0.01 milligrams (mg). The balancemay have the capability to downloadrecor
31、d the weight measurement and calibration data into Microsoft Excel,6,7, or a similarprogram, for weight recording and calibration. program. In order to prevent contamination of particulates from ambient air, thebalance must be placed inside a glove box in a small confined or clean room with a HEPA8,
32、7 air cleaner.filter.7.2 Calibration weightClass WeightASTM Class 1 (Class (E617S)categoryCategory calibration weights with a toleranceof 6 0.1 mg.0.01 mg certified as traceable to NIST mass standards. a national metrology institute (NMI) such as NIST massstandards should be used. The weights used f
33、or calibration are a 0.05 g and 0.2 g weight, g, of corrosion-resistant construction.Calibration weight isweights are to be certified on an annual basis. The weight of the particular 0.2m polytetrafluoroethylene(PTFE) filter used in this method test was around 0.1g.7.3 Glove boxBox (Option A)Aglove
34、box is a sealed containerchamber that, in this application, is designed to allow weightmeasurement by balance allows weight measurements to be taken without particulate contamination from ambient air. Two glovesare generally built into the front sidesside of the glove box with entry arranged in such
35、 a way so that the user can place their handsinto the gloves and perform weight measurement,measurements, install filters, and assemble the filter holder inside the box.holders.Aside evacuation port or antechamber should also be used to minimize contamination of the glove box environment. Theglove b
36、ox must be maintainedkept clean at all times and any visual particulate matter must be removed immediately. A HEPAvacuum can be used for cleaning purposes.Aside evacuation port or anti-chamber should also be used to minimize contaminatingthe glove box environment. The glove box should be flushed hav
37、e a steady flow of clean, dry nitrogen (N2at all times with cleandry N2 maintaining a RH of 30% or less inside the glove box as determined ) at all times. The temperature and humidity shouldbe kept consistent at 21 6 2 C and 35 6 5% RH and should be monitored by a data logger or other device install
38、ed in the glovebox.7.4 Clean Room (Option B)Analysis should occur in a climate-controlled, draft-free room constantly under positive pressure.The relative humidity must be maintained at 35 6 5% and the temperature must be maintained at 21 6 2 C. If the temperatureor humidity falls out of range, no w
39、eighing can occur for 24 h. Before entering the clean room, the analyst must step on “sticky”floor mats to remove any particulate matter from the bottoms of shoes. The room must have a HEPAair filter on the inlet air systemto remove particulates from the air.7.5 Static Charge Removal DeviceA static
40、charge removal device, such as an ionization bar, must be placed inside the glovebox or clean room (7.3) next to the balance. Before measurement of any material, The static charge on the materials, such asstandard weights and filters, the static charges on the material must be removed using a static
41、 charge removal device. beforeweighing. Alternatively, anti-static strips which consist of radioactive ( - particle) Polonium-210 strips can be used to dischargestatic from weights and filters. Polonium strips should be replaced every 6 months (conservatively) or according to the useful lifequoted b
42、y the manufacturer.7.6 Moisture/TemperatureHumidity/Temperature Data LoggerA data logger is placed inside the glove box or clean room tomeasure both moisturehumidity and temperature of atmosphere inside the glove box the atmosphere either continuously or atpre-defined intervals. The moisture of the
43、glove box is kept of 30% or less using reagent grade or better nitrogen flow. All thetemperature and moisture information are humidity is kept at 35 6 5% RH. Temperature and humidity information may be storedin a data logger, which is can be downloaded into excel, Microsoft Excel,6,7 or a similar pr
44、ogram after completion ofmeasurements.7.7 Mini-Clean RoomStorageA small clean room with or a glove box with a HEPA filter mustmay be used to store newpolytetrafluoroethylene (PTFE) PTFE filters, the filter holder, and sampled filters at moisture less than 30%. 35 6 5% RH and21 6 2 C.7.8 HEPA VacuumA
45、 vacuum with a HEPA filter is may be used to remove dust from the glove box or areas where filters arestored or manipulated.handled.7.9 TweezersFilters must be handled using clean plastic or PTFE coated tweezers.7.10 GlovesClean, non-powdered plastic gloves must be worn when handling filters outside
46、 of the glove box.7.11 Light boxBox (Optional)A light box may be useful for inspection of filters.8. Reagents and Materials8.1 FilterA 47 mm diameter polytetrafluoroethylene (PTFE) millimeter (mm) diameter PTFE filter (PTFE Membrane DiscFilters) is used. One side of this type filter is composed of p
47、olytetrafluoroethylene (PTFE) PTFE and the reverse side is composedof polypropylene. Installed When the filter is installed in the filter holder, the PTFE side should face the hydrogen fuel stream. The6 Microsoft Excel is a trademark of the Microsoft Corporation, One Microsoft Way Redmond, WA 98052-
48、639998052-6399.7 The mention of trade names in this test method does not constitute endorsement or recommendation. Other manufacturers of equipment or equipment models can be used.8 HEPA is a trademark of the HEPA Corporation, 3071 East Coronado Street Anaheim, CA 9280692806.D7651 173polypropylene s
49、ide of the filter is generally shinier than the PTFE side, which is dull when viewed under a bright light. side. Whenexamining, handling, and weighing filters, the side facing the gas stream and collecting particulates PTFE must always face up.Before usage of any using a new filter, examine it carefully inside a glove box to ensure the filter is not damaged and that thereare no particulates on the filter. Filters containing particulates should be discarded as they are unsuitable for usage.use. The weightof the particular 0.2 m
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