Skip to product information
1 of 8

PayPal, credit cards. Download editable-PDF and invoice in 1 second!

GB/T 31035-2014 English PDF (GBT31035-2014)

GB/T 31035-2014 English PDF (GBT31035-2014)

Regular price $285.00 USD
Regular price Sale price $285.00 USD
Sale Sold out
Shipping calculated at checkout.
Quotation: In 1-minute, 24-hr self-service. Click here GB/T 31035-2014 to get it for Purchase Approval, Bank TT...

GB/T 31035-2014: Test methods for proton exchange membrane fuel cell stack at subzero environment

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. This Standard applies to tests for the storage, starting and working performance of proton exchange membrane cell stack in the subzero environment.
GB/T 31035-2014
GB
NATIONAL STANDARD OF THE
PEOPLE 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
Test methods for proton exchange membrane
fuel cell stack at subzero environment
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
Conduct operating training for the personnel of fuel cell stack test to enable them to be experienced in the operation of fuel cell stack test system and know the safety operating procedures in the fuel cell stack test (including electrical equipment operation, chemical reaction and compressed gas). The safety operation of fuel cell stack test platform requires appropriate technical training and experiences as well as safety facilities and equipment. However, above-mentioned content is not within the scope of this Standard.
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;
-- test environment air pressure. 86 kPa ~ 106 kPa.
Preparatory work before test.
For the leakage test of fuel cell stack, conduct gas leakage test for fuel cell stack as specified in 5.2 of GB/T 20042.2-2008; the external and internal leakage of fuel cell stack shall not exceed the maximum leakage amount specified by the manufacturer; and the differential pressure between two sides of the diaphragm in fuel cell stack shall not exceed the maximum differential pressure specified by the manufacturer. 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.
-- the low-temperature climate chamber
The low-temperature climate chamber shall be capable of satisfying the low- temperature environment conditions, temperature uniformity inside the chamber and temperature control accuracy (set temperature ?? 2??C), which meet test requirements. The interfaces of supply gas, coolant and circuit are located inside the climate chamber to ensure the gas temperature at the intake of air and fuel of fuel cell stack is the set environment temperature. Hydrogen alarms and air outtakes shall be provided inside the chamber to ensure the safety of test. -- the fuel cell stack test platform, it shall have the following functions. ??? reactant gas flow regulation. measuring the flow rate of fuel and oxidizing agent gas of fuel cell stack under the stoichiometric ratio required.
??? reactant gas humidification control. humidifying reactant gas before delivering gas to fuel cell stack to achieve the dew point required.
NOTE. The gas transfer line between humidifier and cell can be heated to at least 5??C ~ 10??C above dew point temperature to minimize condensation. In order to lower heat loss, the section of line shall be heat insulated.
??? reactant gas pressure control. regulating the pressure intensity of intake reactant gas of fuel cell stack.
??? load control. loading fuel cell stack to the current specified. Load control shall be capable of operating both in the constant current mode and in the constant voltage or constant power modes.
??? fuel cell stack temperature monitoring. monitoring the temperature of fuel cell stack as required by the manufacturer (it is recommended that the
temperature monitoring values of the central and edge positions of fuel cell stack be provided, i.e. the maximum temperature and minimum temperature inside stack).
??? monitoring and data acquisition instruments of the current, voltage and power of fuel cell stack. measure and record the current, voltage and power of fuel cell stack in real time during test.
??? applied power consumption control. provide the applied power consumption required by fuel cell stack as required by the manufacturer, including auxiliary electric/thermal energy consumption and gas-coolant usage.
??? test platform control. test platform shall be capable of controlling and recording test parameters in real time.
??? safety system. safety system shall be capable of monitoring cell stack alarms and stopping test automatically. It is recommended that anode-cathode lines have inert gas purging capability. It is also recommended that real-time linked protective function be provided for the voltage, pressure intensity and temperature of high/low monocell and gas leakage. And meanwhile,
appropriate ventilation equipment shall be provided.
6.2 Test instruments and precisions
The test instruments and precision requirements are as follows.
a) the instruments measuring environmental conditions. barometers, hygrometers and temperature sensors;
b) the instruments measuring fuel conditions. fuel flowmeters, pressure sensors, Conduct the blow-by test for the fuel cavity, oxidizing agent cavity and cooling agent cavity of fuel cell stack as specified in 5.6 of GB/T 20042.2-2008.
7.7 Differential pressure test
Conduct the differential pressure test for fuel cell stack as specified in 5.10 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.
7.9 Power generation test
In accordance with the specifications of the manufacturer of fuel cell stack, operate fuel cell stack stably in the idle state and rated power output state; and record respectively. the fuel input, oxidizing agent (air) input, auxiliary electric energy input, auxiliary thermal energy input, electric energy output and thermal energy output of fuel cell stack, within the specified operating time.
7.10 Shutdown test
In accordance with the shutdown procedures specified by the manufacturer of fuel cell stack, conduct the shutdown test of fuel cell stack; and record respectively. the time required for fuel cell stack from the rate power output, idle state and overload output power to shutdown; 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 characteristics and power generation performance of fuel cell and fuel cell stack, is as follows.
-- the leakage test items for fuel cell stack. passing the gas leakage test, allow working pressure test, cooling system pressure test, blow-by test and differential pressure test for fuel cell stack; and measuring the gas leakage amount and leakage rate of fuel cell stack.
-- the test items of starting characteristics and the test items of heat balance. measuring simultaneously the starting time, fuel input, oxidizing agent (air) input, external auxiliary ...

View full details