GB/T 27748.2-2022Stationary fuel cell power system - Part 2: Performance test methods (English PDF)

Foreword

This document is drafted in accordance with GB/T 1.1-2020 "Directives for

standardization - Part 1.Rules for the structure and drafting of standardizing

documents".

The document is Part 2 of GB/T 27748 "Stationary fuel cell power system". GB/T

27748 has issued the following parts.

- Part 1.Safety;

- Part 2.Performance test methods;

- Part 3.Installation;

- Part 4.Performance test methods for small fuel cell power systems.

This document replaces GB/T 27748.2-2013 "Stationary fuel cell power systems - Part

2 Performance test methods". Compared with GB/T 27748.2-2013, in addition to

structural adjustment and editorial changes, the main technical changes are as follows.

- Delete the terms and definitions of "Audible noise level", "Emission

characteristics", "Parasitic load", "Pressure", "Secondary thermal power", and

"Standby state (idle state)" (see 3.1.1, 3.1.8, 3.1.18, 3.1.21, 3.1.25, and 3.1.29 of

the 2013 edition);

- Add terms and definitions of "External thermal energy", "Noise level", "Pre-

generation state", "Rated power", "Total power input", and "Waste water" (see

3.1.7, 3.1.14, 3.1.20, 3.1.22, 3.1.33, and 3.1.35);

- Add the content of operating process (see 3.2);

- Modify some test contents in Table 2 (see Table 2; Table 2 of the 2013 edition);

- Delete "Exhaust gas flow measurement" and "Hydrogen concentration

measurement" (see 7.3.7 and 7.3.7.9 of the 2013 edition);

- Add requirements for gas sampling (see 7.3.7.1);

- Modify "Audible noise level measurement" to "Noise level test" (see 7.3.9; 7.3.9

of the 2013 edition);

- Add criteria for attaining the steady-state set value (see 9.3.2);

- Add requirements for maximum acceptable instantaneous power output transient

(see Annex D).

This document is identical to IEC 62282-3-200.2015 "Fuel cell technologies - Part 3-

200 Stationary fuel cell power systems - Performance test methods".

The following editorial change has been made to this document.

- Change the standard name to "Stationary fuel cell power system - Part 2.

Performance test methods".

Attention is drawn to the possibility that some of the elements of this document may be

the subject of patent rights. The issuing authority of this document shall not be held

responsible for identifying any or all such patent rights.

This document was proposed by China Electrical Equipment Industry Association.

This document shall be under the jurisdiction of National Technical Committee 342 on

Fuel Cell and Flow Battery of Standardization Administration of China (SAC/TC 342).

Drafting organizations of this document. North China Electric Power University;

Guangzhou Yunqing Testing Technology Co., Ltd.; Shanghai Shenli Technology Co.,

Ltd.; Dalian Institute of Chemical Physics, Chinese Academy of Sciences; Nanjing

University; Wuhan University of Technology; Tongji University; Tsinghua University;

China Quality Certification Centre; Machinery Industry Beijing Electrotechnical

Institute of Economic Research; Wuxi Institution of Supervision & Testing on Product

Quality; Shenzhen Institute of Standards and Technology; Shanghai Pearl Hydrogen

Energy Technology Co., Ltd.; Xinyan Hydrogen Energy Technology Co., Ltd.; Weichai

Power Co., Ltd.; Yutong Bus Co., Ltd.; Beijing Long March Tian Min Hi-Tech Co.,

Ltd.; Nekson Power Technology Co., Ltd.; China Automotive Technology and Research

Center Co., Ltd.; No. 712 Research Institute of China Shipbuilding Industry

Corporation; Global Energy Interconnection Research Institute Co., Ltd.; Great Wall

Motor Co., Ltd. Baoding Hydrogen Testing Branch; Weifu High-Technology Group Co.,

Ltd.; China Automotive Engineering Research Institute Co., Ltd.; Haidriver (Qingdao)

Energy Technology Co., Ltd.; Shanghai Hydrogen Propulsion Technology Co., Ltd.;

Tianjin University.

Main drafters of this document. Liu Jianguo, He Wenxiang, Wang Gang, Qi Zhigang,

Yu Hongmei, Hou Ming, Tan Jinting, Ma Tiancai, Pei Pucheng, Zhang Liang, Zhou Bin,

Chen Yao, Wang Yiqun, Dong Hui, Pan Fengwen, Jiang Shangfeng, Jin Yinshi, Hou

Xiangli, Hao Dong, Ye Donghao, Liang Danxi, Duan Zhijie, Zhang Yihuang, Mao

Zhanxin, Xie Jiaping, Chen Pei, Chen Guanyi, Ma Wenchao.

The previous editions of this document and the documents it replaces are as follows.

- It was first issued in 2013 as GB/T 27748.2-2013;

- This is the first revision.

1 Scope

This document covers operational and environmental aspects of the stationary fuel cell

power systems (hereinafter referred to as "power systems") performance.

This document applies to the following test methods.

2 Normative references

The contents of the following documents, through normative references in this text,

constitute indispensable provisions of this document. Among them, for dated references,

only the edition corresponding to that date applies to this document. For undated

references, the latest edition (including all amendments) applies to this document.

ISO 3648 Aviation fuels - Estimation of net specific energy

3 Terms, definitions, operating process and symbols

For the purposes of this document, the following terms and definitions apply.

Mechanical oscillations caused by the environment that affect vibration level readings.

4 Reference conditions

The heating value of fuel is based on the lower heating value (LHV) in principle. Energy

efficiency is expressed as follows.

5 Item of performance test

The performance assessment of the power systems shall be considered from the

following two points of view.

6 Test preparation

An uncertainty analysis shall be performed on the four test items below to indicate the

reliability of the test results and to comply with customer requests. The following test

results shall be analysed to determine the absolute and relative uncertainty. A test shall

be planned so that the reliability of the results can be evaluated for the following items.

7 Measurement instruments and measurement methods

The electric power measurement may be used to calculate the electric energy over the

test duration.

8 Test plan

The maximum permissible variations over the test duration are given in Table 4.

The maximum permissible variations in Table 4 do not apply for start-up and shutdown

testing.

The appropriate duration and frequency of readings are determined according to the

type of power system tested. A sufficient number of measurements and number of

measurement sets shall be established on the basis of requirements for data fluctuations,

stability of average values and the uncertainty analysis of this document.

9 Test methods and computation of test results

The average gaseous fuel input may be described either as the volumetric flow rate of

fuel, qVf0 in m3/s, or as the mass flow rate of fuel, qmf in kg/s.

Vibration produced by the power system shall be measured through the operating

sequence (from start-up, rated load to shutdown) in accordance with 7.3.10 to find the

maximum vibration level.

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