ISO 16110-2:2010

INTERNATIONAL ISO
STANDARD 16110-2
First edition
2010-02-15
Hydrogen generators using fuel
processing technologies —
Part 2:
Test methods for performance
Générateurs d'hydrogène faisant appel aux technologies du traitement
du carburant —
Partie 2: Méthodes d'essai de rendement

Reference number
©
ISO 2010
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ii © ISO 2010 – All rights reserved

Contents Page
Foreword .iv
Introduction.v
1 Scope.1
2 Normative references.1
3 Terms, definitions and symbols .2
3.1 Terms and definitions .2
3.2 Symbols.3
4 Test conditions .3
4.1 Test boundary.3
5 Measurement technique .5
5.1 General .5
5.2 Operational parameters .5
5.3 Environmental aspects .6
5.4 Ambient conditions .8
6 Test plan.8
6.1 General .8
6.2 Test operating modes .8
6.3 Measurement, test frequency and duration.10
6.4 Uncertainty analysis.11
7 Test procedure.11
7.1 Safe operation of the hydrogen generator and test equipment .11
7.2 Execution of the test plan.11
8 Calculations .12
8.1 Electrical power input .12
8.2 Calculation of flow rates.13
8.3 Calculation of fuel, steam and hydrogen energy .15
8.4 Calculation of efficiency .20
9 Test reports.21
9.1 General .21
9.2 Summary report.21
9.3 Detailed report .22
9.4 Full report.22
Annex A (normative) Symbols and abbreviated terms .23
Annex B (informative) Guidance for uncertainty analysis.26
Annex C (normative) Calculation of fuel heating value .29
Annex D (informative) Definition of hydrogen generator efficiency.33
Annex E (informative) Reference gas .35
Bibliography.38

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 16110-2 was prepared by Technical Committee ISO/TC 197, Hydrogen technologies.
ISO 16110 consists of the following parts, under the general title Hydrogen generators using fuel processing
technologies:
⎯ Part 1: Safety
⎯ Part 2: Test methods for performance

iv © ISO 2010 – All rights reserved

Introduction
This part of ISO 16110 describes how to measure and document the performance of stationary hydrogen
generators for residential, commercial and industrial applications.
The following hydrogen generation types have been considered:
⎯ hydrogen generators using fuel processing technologies.

INTERNATIONAL STANDARD ISO 16110-2:2010(E)

Hydrogen generators using fuel processing technologies —
Part 2:
Test methods for performance
1 Scope
This part of ISO 16110 provides test procedures for determining the performance of packaged, self-contained
or factory matched hydrogen generation systems with a capacity less than 400 m /h at 0 °C and 101,325 kPa,
herein referred to as hydrogen generators, that convert a fuel to a hydrogen-rich stream of composition and
conditions suitable for the type of device using the hydrogen (e.g. a fuel cell power system, or a hydrogen
compression, storage and delivery system).
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 3744, Acoustics — Determination of sound power levels of noise sources using sound pressure —
Engineering method in an essentially free field over a reflecting plane
ISO 4677 (all parts), Atmospheres for conditioning and testing — Determination of relative humidity
ISO 5167 (all parts), Measurement of fluid flow by means of pressure differential devices inserted in circular
cross-section conduits running full
ISO 6060, Water quality — Determination of the chemical oxygen demand
ISO 6326 (all parts), Natural gas — Determination of sulfur compounds
ISO 6974 (all parts), Natural gas — Determination of composition with defined uncertainty by gas
chromatography
ISO 6975, Natural gas — Extended analysis — Gas-chromatographic method
ISO 7934, Stationary source emissions — Determination of the mass concentration of sulfur dioxide —
Hydrogen peroxide/barium perchlorate/Thorin method
ISO 9096, Stationary source emissions — Manual determination of mass concentration of particulate matter
ISO 10101 (all parts), Natural gas — Determination of water by the Karl Fischer method
ISO 10523, Water quality — Determination of pH
ISO 10707, Water quality — Evaluation in an aqueous medium of the “ultimate” aerobic biodegradability of
organic compounds — Method by analysis of biochemical oxygen demand (closed bottle test)
ISO 11042 (all parts), Gas turbines — Exhaust gas emission
ISO 11541, Natural gas — Determination of water content at high pressure
ISO 11564, Stationary source emissions — Determination of the mass concentration of nitrogen oxides —
Naphthylethylenediamine photometric method
ISO 14687-1, Hydrogen fuel — Product specification — Part 1: All applications except proton exchange
membrane (PEM) fuel cell for road vehicles
ISO 14687-2, Hydrogen fuel — Product specification — Part 2: Proton exchange membrane (PEM) fuel cell
applications for road vehicles
ISO 16622, Meteorology — Sonic anemometers/thermometers — Acceptance test methods for mean wind
measurements
IEC 61010-1, Safety requirements for electrical equipment for measurement, control, and laboratory use —
Part 1: General requirements
IEC 61672-1, Electroacoustics — Sound level meters — Part 1: Specifications
3 Terms, definitions and symbols
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1.1
audible noise level
sound pressure level produced by the hydrogen generator measured at a specified distance
NOTE Audible noise level is expressed as decibels (dBA) and measured as described in this part of ISO 16110.
3.1.2
background noise level
sound pressure level of ambient noise at the measurement point
3.1.3
cold state
condition of a hydrogen generator at ambient temperature with no substantial fuel or power input
3.1.4
discharge water
water that is released by the hydrogen generator
NOTE Discharge water does not constitute part of a thermal recovery system. It is comprised of the water treatment
waste and the process condensate shown in Figure 1.
3.1.5
hydrogen generator
system that converts a fuel to a hydrogen-rich stream
NOTE The hydrogen generator is composed of all or some of the following subsystems: a fuel processing system, a
fluid management system, a thermal management system, and other subsystems as described in more detail in
ISO 16110-1.
3.1.6
interface point
measurement point of a hydrogen generator at which material and/or energy either enters or leaves
2 © ISO 2010 – All rights reserved

3.1.7
return gas
tail gas
unused reformed hydrogen-rich gas, which returns to the hydrogen generator and is used as a fuel
NOTE Return gas generally includes hydrogen, carbon dioxide, water vapour and slipped hydrocarbon.
3.1.8
standby state
state in which the hydrogen generator is at operating temperature and is in an operational mode from which it
can be promptly switched to an operational mode with net hydrogen output
See Figure 2, item 2.
...