GB/T 31035-2014 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB/T 31035-2014 | English | 285 |
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Test methods for proton exchange membrane fuel cell stack at subzero environment
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GB/T 31035-2014: Test methods for proton exchange membrane fuel cell stack at subzero environment---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT31035-2014
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 27.070
K 82
Test methods for proton exchange membrane
fuel cell stack at subzero environment
Issued on. DECEMBER 5, 2014
Implemented on. JULY 1, 2015
Issued by. General Administration of Quality Supervision, Inspection and
Quarantine of the People's Republic of China;
Standardization Administration of the People's Republic of
China.
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative References... 4
3 Terms and definitions... 4
4 General safety requirements... 5
5 Test conditions... 6
6 Test platform... 6
7 Routine tests before low-temperature test... 9
8 Low-temperature test... 11
9 Test reports... 16
Annex A (Informative) Starting procedures... 19
Annex B (Informative) Shutdown procedures for low-temperature storage
... 20
Annex C (Informative) Test report... 21
1 Scope
This Standard specifies the general safety requirements, test conditions, test
instrument accuracies, routine tests before low temperature test, low temperature test
methods and test reports for proton exchange membrane fuel cell stack in the subzero
environment (below 0°C).
This Standard applies to tests for the storage, starting and working performance of
proton exchange membrane cell stack in the subzero environment (below 0°C).
2 Normative References
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition dated applies to this document. For
undated references, the latest edition of the referenced documents (including all
amendments) applies to This Standard.
GB/T 28816, Fuel cell - Terminology
GB/T 20042.2-2008, Proton exchange membrane fuel cell - General technical
specification of fuel cell stacks
3 Terms and definitions
For the purposes of this document, the following terms, and those defined in GB/T
28816, apply.
3.1
climate chamber
Equipment in which fuel cell stack to be tested can be placed to control temperature
and humidity stably as required by tests.
3.2
coolant
A circulating medium which is introduced into fuel cell stack cooling cavity to exchange
the heat of fuel cell stack to the external environment during the operation of fuel cell
stack, featuring no phase change occurring in low temperature environment set below
zero degree centigrade, and no physical and chemical effects on fuel cell stack
materials.
4 General safety requirements
The general safety requirements for proton exchange membrane fuel cell stack shall
be as specified in 4.2 of GB/T 20042.2-2008.
5 Test conditions
When test is conducted, test conditions shall comply with the specifications as follows.
-- environment temperature. room temperature 25°C, low-temperature environment
temperatures 0°C, - 5°C, - 10°C, - 20°C, - 30°C, - 40°C. In a specific test, all
parties of the test shall agree on environment temperature adopted for the test
in accordance with test objective, controlling the error of environment
temperature within the scope of ± 1°C;
6 Test platform
6.1 Test equipment and requirements
The low-temperature climate chamber for fuel cell stack test and the platform for fuel
cell stack test shall comply with the following requirements.
6.2 Test instruments and precisions
The test instruments and precision requirements are as follows.
6.3 Test items
Under the specified conditions of low-temperature environment, assess proton
exchange membrane cell stack mainly in the following two aspects.
7 Routine tests before low-temperature test
7.1 General
The manufacturer of fuel cell stack provides complete fuel cell stack for test as well as
the relevant technical parameters required by the operation of fuel cell stack, including
fuel, oxidizing agent, coolant, auxiliary electric energy input, auxiliary thermal energy
input and so on.
7.2 Air-tightness test
Conduct the gas leakage test for fuel cell stack as specified in 5.2 of GB/T 20042.2- 2008.
7.3 Operating test
Conduct the normal operation test for fuel cell stack as specified in 5.3 of GB/T 20042.2-2008.
7.4 Allowable working pressure test
Conduct the allowable working pressure test for fuel cell stack as specified in 5.4 of
GB/T 20042.2-2008.
7.8 Starting test
In accordance with the starting procedures specified by the manufacturer of fuel cell
stack, conduct the starting test for fuel cell stack; and record respectively. the time
required from the cold start of fuel cell stack to the idle state and rated power output;
the flow rates of fuel input and output; the flow rates of oxidizing agent (air) input and
output; the auxiliary electric energy input; the auxiliary thermal energy input; the
purging time; and the energy consumption.
7.11 Summary
The performance parameters of fuel cell stack can be obtained through 7.2 ~ 7.10,
including gas leakage rate, starting time and energy consumption, shutdown time and
energy consumption, purging time and energy consumption, external energy
consumption and so on.
8 Low-temperature test
8.1 Condition of fuel cell stack during test
For the test items of low-temperature storage and low-temperature starting of fuel cell
stack, conduct tests in accordance with test objectives under different conditions of
fuel cell stack, and record the conditions of fuel cell stack as specified in Table 3.
8.2 Maximum allowable deviations for test items
For the maximum allowable deviations of the parameters involved during test, see
Table 4.
8.3 Test data acquisition
The data acquired for the tests for gas leakage, starting characteristics, shutdown
characteristics and power generation performance of fuel cell and fuel cell stack, is as
follows.
8.4 Low-temperature test process
8.4.1 General
In accordance with test requirements, conduct storage-starting tests for fuel cell stack
at low temperature (such as 0°C, - 5°C, - 10°C, - 20°C, - 30°C and - 40°C); and the
specific environment temperature is decided in accordance with test requirements.
During test, fuel cell stack is operated automatically as required by the manufacturer
of fuel cell stack or the starting procedures given in Annex A.
This Standard only describes test methods and does not specify performance indexes.
8.4.2 Low-temperature storage test
8.4.2.1 Test procedures
Conduct the low-temperature storage test for fuel cell stack in accordance with the
following procedures.
8.4.3 Low-temperature starting test
8.4.3.1 Test procedures
Conduct the low-temperature starting test for fuel cell stack in accordance with the
following procedures.
9 Test reports
9.1 General
Test reports shall provide sufficient, accurate, clear, objective test data for analysis and
reference. There are three forms of reports, including abstracted, detailed and
complete reports. Each form of reports shall include corresponding front pages and
directories.
9.2 Front pages
Front pages shall give the following information.
9.3 Table of content
Each form of reports shall be provided with corresponding table of content.
9.4 Abstracted reports
Abstracted reports shall include the following information.
9.5 Detailed reports
The detailed reports shall provide the following information, in addition to the content
of abstracted reports.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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