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Society
of Automotive Engineers Performance Working Group Mission: Develop procedures for testing the PEM fuel cell system and its major subsystems for automotive applications. |
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| Identification |
SAE J 2615 Performance Test Procedures of Fuel Cell Systems For Automotive Applications.
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| Scope |
This recommended practice is intended to provide a
framework for performance testing of fuel cell systems (FCS’s) designed
for automotive applications with direct current (DC) output. The
procedures described allow for measurement of performance relative to
claims by manufacturers of such systems with regard to the following
performance criteria: Power, Efficiency, Transient Response, Start
and Stop Performance, Physical Description, Environmental Limits,
Operational Requirements, Integration. Since this recommended practice
is based on the principal of performance measurement relative to a
claim, the testing parties should take care to include any qualifying or
unique circumstances leading to the test results reported in order to
achieve full disclosure. For example,
efficiency as defined in section 3.1.9 allows for the inclusion of
thermal output benefit. If a test result is reported which takes
advantage of this allowance this stipulation should be noted with the
efficiency figure and the useful purpose of the thermal output (e.g.
cabin heating) should be made clear. |
| Status |
Published January 5, 2005. Revision A published October 20, 2011.
Available at
www.sae.org. |
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| Identification |
SAE J 2616 Performance Test Procedures for the
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| Scope |
This recommended practice is intended to serve as a design verification
procedure and not a product qualification procedure. It may be used to
verify design specifications or vendor claims. Test procedures, methods
and definitions for the performance of the fuel processor subsystem
(FPS) of a fuel cell system (FCS) are provided. Fuel processor
subsystems (FPS) include all components required in the conversion of
input fuel and oxidizer into a hydrogen-rich product gas stream suitable
for use in fuel cells. Performance of the fuel processor subsystem
includes evaluating system energy inputs and useful outputs to determine
fuel conversion efficiency and where applicable the overall thermal
effectiveness. Each of these performance characterizations will be
determined to an uncertainty of less than +/- 2% of the value. The
method allows for the evaluation of fuel processor subsystems for two
general cases. - Compare fuel processors with different designs (e.g.,
catalytic partial oxidation reforming, autothermal reforming or steam
reforming) on a common basis where no specific fuel cell system design
has been identified. - Assess the performance of a specific fuel
processor in the context of a specific fuel cell system design. This
document applies to all fuel processor subsystems for transportation
applications regardless of fuel processor type, fuel cell type,
electrical power output, thermal output, or system application
(propulsion or auxiliary power unit (APU)). For example, the fuel
processor subsystems associated with proton exchange, molten carbonate
and solid oxide fuel cells can differ due to the requirements of the
fuel cells themselves. Performance of the fuel processor subsystem, and
preprocessor if applicable, is evaluated. A stand alone fuel processor
(system) or even the primary reactor (e.g., autothermal, partial
oxidation or steam reforming reactor) of a fuel processor subsystem that
would normally be integrated into a fuel cell system can be evaluated.
The fuel processor together with the preprocessor (if required) converts
the fuel (gasoline or other liquid hydrocarbon) to a reformate gas
consisting largely of H2, CO, CO2, H2O and N2 (if air is used). After
the fuel processor subsystem, reformate gas typically contains only
trace levels of carbon bearing components higher than C1. The FPS would
be evaluated in a test facility that is designed to evaluate a
stand-alone component rather than a portion of the reformer such as a
specific catalyst or a particular vessel design. Any fuel(s) mutually
agreed to by the test parties can be used such as 1) straight run
gasoline (EPA Fuel- CARB reformulated gasoline Tier II, 30 ppm sulfur),
or 2) methanol or 3) hydrocarbon fuel such as iso-octane, naphtha,
diesel, liquefied natural gas (LNG) or LPG (propane), etc. The
procedures provide a point-in-time evaluation of the performance of the
fuel processor subsystem. Steady state and transient (start-up and
load-following) performance are included. Methods and procedures for
conducting and reporting fuel processor testing, including
instrumentation to be used, testing techniques, and methods for
calculating and reporting results are provided. The boundary limits for
fuel and oxidant input, secondary energy input and net energy output are
defined. Procedures for measuring temperature, pressure, input fuel flow
and composition, electrical power and thermal output at the boundaries
are provided. Procedures for determination of the FPS performance
measures such as fuel processor efficiency and cold gas efficiency at a
rated load or any other steady state condition are provided. Methods to
correct results from the test conditions to reference conditions are
provided. SI units are used throughout the recommended practice
document. |
| Status |
Published 2005. Revision A published August 2011.
Available at
www.sae.org |
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| Identification |
SAE J2617
Performance Test Procedure of PEM Fuel Cell Stack Subsystem for Automotive application.
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| Scope |
This recommended practice is intended to serve as a procedure to verify
the design specifications or vender claims of any PEM (Proton Exchange
Membrane) type fuel cell stack sub-system for automotive applications.
In this document, definitions, specifications, and methods for the
performance characterization of the fuel cell stack sub-system are
provided. The performance characterization includes evaluating
electrical outputs and controlling fluid inputs and outputs based on the
test boundary defined in this document. In this recommended practice, a
typical fuel cell stack sub-system includes the following: - Fuel cell
stack(s) - An Assembly of membrane electrode assemblies. - (MEA),
current collectors, separator plates, cooling plates, manifolds, and a
supporting structure. - Connections for conducting fuels, oxidants, and
exhausts. - Electrical connections for the power delivered by the stack
sub-system. - Devices for monitoring electrical loads, which are for
interface to the fuel cell system (FCS). - Devices for monitoring cell
voltage (Not all stacks are designed to read every cell voltage.) -
Additional connections for conducting additional fluids, such as cooling
media and inert gas. - Instrumentation for detecting normal and/or
abnormal operating conditions. - Enclosures or pressure vessels, and
ventilation systems. Not included in the sub-system are the following: -
Fuel and air processors - Thermal management system - Power conditioner
and distributor - Controllers The goal of this recommended practice is
to provide a method for users to conduct fuel cell stack sub-system
tests on a common basis. This allows the comparison of fuel cell stack
sub-systems with different designs where no specific fuel cell system
design has been identified. Alternatively, the performance of a specific
fuel cell stack sub-system can be assessed in the context of a specific
fuel cell system design based on the agreement of the testing parties |
| Status |
Published November 2007. Revision A published
August 2011. Available at www.sae.org |
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