IWA 11:2012
(Main)Guidelines for evaluating cookstove performance
Guidelines for evaluating cookstove performance
IWA 11:2012 provides a framework for rating cookstoves against tiers of performance for a series of performance indicators, including fuel use (efficiency), emissions (carbon monoxide and particulate matter 2,5), indoor emissions (carbon monoxide and particulate matter 2,5), and safety. IWA 11:2012 does not select a single laboratory protocol to determine cookstove performance. Instead, it enables stove testers to use laboratory protocols most appropriate for the stove and performance indicator being tested. Tiers of performance for each protocol chart all stove test results on the same page, in order to ensure equivalent results, regardless of protocol used.
Lignes directrices pour évaluer les performances d'une table de cuisson
General Information
Relations
Standards Content (Sample)
International Workshop
Agreement
IWA 11
Guidelines for evaluating cookstove
performance
* * * *
Lignes directrices pour évaluer les performances d'une table de cuisson
Reference number ©
ISO 2012
IWA 11:2012(E)
All rights reserved
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IWA 11:2012(E)
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ii © ISO 2012 – All rights reserved
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Guidelines for evaluating cookstove performance IWA 11:2012(E)
Contents Page
Foreword . iv
Workshop contributors . v
Workshop resolutions . ix
Introduction . xi
1 Scope . 1
2 Terms and definitions . 1
3 Framework for evaluating cookstove performance . 3
4 Tiers associated with VITA WBT 4.1.2 . 4
Bibliography . 6
© ISO 2012 – All rights reserved iii
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IWA 11:2012(E) Guidelines for evaluating cookstove performance
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). ISO's technical work is normally carried out through ISO technical committees in which
each ISO member body has the right to be represented. International organizations, governmental and
nongovernmental, in liaison with ISO, also take part in the work.
In order to respond to urgent market requirements, ISO has also introduced the possibility of preparing
documents through a workshop mechanism, outside of ISO committee structures. These documents are
published by ISO as International Workshop Agreements. Proposals to hold such workshops may come from
any source and are subject to approval by the ISO Technical Management Board which also designates an
ISO member body to assist the proposer in the organization of the workshop. International Workshop
Agreements are approved by consensus amongst the individual participants in such workshops. Although it is
permissible that competing International Workshop Agreements exist on the same subject, an International
Workshop Agreement shall not conflict with an existing ISO or IEC standard.
An International Workshop Agreement is reviewed after three years, under the responsibility of the member
body designated by the ISO Technical Management Board, in order to decide whether it will be confirmed for
a further three years, transferred to an ISO technical body for revision, or withdrawn. If the International
Workshop Agreement is confirmed, it is reviewed again after a further three years, at which time it must be
either revised by the relevant ISO technical body or withdrawn.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO should not be held responsible for identifying any or all such patent rights.
International Workshop Agreement IWA 11 was approved at a workshop organized by the Partnership for
Clean Indoor Air (PCIA) and the Global Alliance for Clean Cookstoves, in association with the American
National Standards Institute (ANSI), and held in The Hague, Netherlands, in February 2012.
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Guidelines for evaluating cookstove performance IWA 11:2012(E)
Workshop contributors
Bolivia
Prof. Marcelo Gorritty, GIZ-Endev/UMSA Bolivia
Burkina Faso
Dr. Oumar Sanogo, IRSAT/CNRST
Cambodia
Mr. Yohanes Iwan Baskoro, GERES Cambodia
Mr. David Beritault, GERES Cambodia
China
Ms. Wen Feng, Xunda Science & Technology Group Co. Ltd
Ms. Li Heping, Xunda Science & Technology Group Co. Ltd
Dr. Guangqing Liu, China Alliance for Clean Stoves; Beijing University of Chemical Technology
France
Mr. Xavier Brandao, Independent Consultant
Germany
Mr. Elmar Dimpl V.L., Freelance Consultant for GIZ
Mr. Klas Heising, GIZ
Ms. Christiane Pakula, University of Bonn - Institute of Agricultural Engineering - Household and
Appliance Technology Section
Ms. Christa Roth, Food and Fuel consultants
Mr. Samuel Shiroff, Bosch and Siemens Home Appliances Group
Guatemala
Mr. Richard Grinnell, HELPS International
Honduras
Mr. Timothy Longwell, Zamorano University
Indonesia
Mr. Azwar Sabana, Badan Standardisasi Nasional (BSN)
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IWA 11:2012(E) Guidelines for evaluating cookstove performance
Kenya
Mr. Zacharia Chepkania, Kenya Bureau of Standards
Mr. Vincent Okello, Practical Action East Africa
Mr. Matthew Owen, Chardust Ltd.
Malawi
Ms. Gloria Chaonamwene, Malawi Bureau Of Standards
Nepal
Ms. Karuna Bajracharya, Alternative Energy Promotion Centre/Energy Sector Assistance Programme
Mr. Nawa Raj Dhakal, Alternative Energy Promotion Centre
Mr. Min Bikram Malla, Practical Action Nepal Office
Netherlands
Dr. Mark Bennett, Philips
Ms. Carja Butijn, Stichting KoZon
Mr. Hans De Groot, The Fortune Cooker Sustainable Energies
Mr. Jaap De Winter, ETC Foundation
Ms. Chandler Hatton, SimGas
Ms. Wietske Jongbloed, TchadSolaire, KoZon
Mr. Hans Le Noble, Solar Cooking Nederland
Mr. Arnold Leufkens, Solar Cooking Nederland
Ms. Sheila Oparaocha, ENERGIA
Mr. Koen Peters, Dutch Ministry of Foreign Affairs
Mr. Maarten Romijn, The Fortune Cooker Sustainable Energies
Mr. Raouf Saidi, Energy research Centre of the Netherlands (ECN)
Ms. Jen Tweddell, Shell
Mr. Wim J. Van Nes, SNV Netherlands Development Organisation
Mr. Ruben Walker, African Clean Energy Lesotho
Nigeria
Ms. Habiba Ali, SOSAI Renewable Energies Company
Ms. Monica Samec, Small World Carbon
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Guidelines for evaluating cookstove performance IWA 11:2012(E)
Norway
Mr. Sjur Haugen, Statoil Norway
Peru
Mr. Hernando David Carpio Montoya, SENCICO - National Service of Training for the Construction
Industry
Mr. Arthur Laurent, MICROSOL
Mr. Jose Humberto Bernilla Carlos, Cooperación Alemana al desarrollo GIZ
South Africa
Prof. Harold Annegarn, Sustainable energy Technology and Research (SeTAR) Centre, University of
Johannesburg
Mr. Rampepe Mohohlo, South African Bureau of Standards
Mr. Crispin Pemberton-Pigott, New Dawn Engineering
Ms. Marjorie Pyoos, South African Bureau of Standards
Mr. James Robinson, SeTAR Centre, University of Johannesburg
Mr. Patrick Qwabi, South African Bureau of Standards
Switzerland
Mr. Tobias Hoeck, Foundation myclimate - The Climate Protection Partnership
Ms. Tanya Petersen, The Gold Standard Foundation
Ms. Tenke Zoltani, Islan Asset Management
Tanzania
Mr. Joseph Emmanuel Ismail, Tanzania Bureau of Standards
Uganda
Mr. Karsten Bechtel, Centre for Research in Energy and Energy Conservation (CREEC)
Ms. Virginia Echavarria, Uganda Carbon Bureau
Mr. David L Mukisa, African Alliance for Clean Cooking (AACC)
United Kingdom
Dr. Ewan Bloomfield, Practical Action
Prof. Nigel Bruce, World Health Organisation
Ms. Claudia Doets, Do-inc
Mr. Richard Iliffe, co2balance
Mr. Jonathan Rouse, HED Consulting
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IWA 11:2012(E) Guidelines for evaluating cookstove performance
United States
Dr. Tami Bond, University of Illinois
Mr. Clay Burns, BioLite
Dr. Ranyee Chiang, U.S. Department of Energy
Ms. Leslie Cordes, Global Alliance for Clean Cookstoves
Dr. Morgan Defoort, Colorado State University
Ms. Elisa Derby, Winrock International
Ms. Brenda Doroski, U.S. Environmental Protection Agency
Ms. Nancy Sanford Hughes, StoveTeam International
Mr. James Jackson, Cummins Emission Solutions
Ms. Kristin Jackson, Cummins Emission Solutions
Mr. Jim Jetter, U.S. Environmental Protection Agency
Dr. Michael Johnson, Berkeley Air Monitoring Group
Mr. Nathan Johnson, Iowa State University
Mr. Christian L'Orange, Colorado State University
Dr. William Martin, U.S. National Institutes of Health/National Institute of Child Health & Human
Development
Dr. Sumi Mehta, Global Alliance for Clean Cookstoves
Mr. John Mitchell, U.S. Environmental Protection Agency
Mr. Jacob Moss, U.S. Department of State
Ms. Radha Muthiah, Global Alliance for Clean Cookstoves
Dr. David Pennise, Berkeley Air Monitoring Group
Dr. Charles Rodes, RTI International
Mr. Dean Still, Aprovecho Research Centre
Mr. Harry Stokes, Project Gaia, Inc.
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Guidelines for evaluating cookstove performance IWA 11:2012(E)
Workshop resolutions
Resolution 1
The International Workshop on Cookstoves recognizes that the Volunteers in Technical Assistance Water
Boiling Test version 4.1.2 (VITA WBT 4.1.2) protocol (see Reference [2]) referenced in this International
Workshop Agreement is not the only valid protocol for rating cookstove performance in the laboratory.
As such, the International Workshop on Cookstoves recommends that:
a) new protocols be developed and/or current protocols be updated to more adequately address all stove
and fuel types (e.g. cooking stoves also used for heating, plancha stoves/griddle stoves, batch-loaded
stoves, charcoal stoves, double pot stoves and solar cookers);
b) tier level equivalence to those used in this International Workshop Agreement for the VITA WBT 4.1.2
protocol be developed for any protocols created or adapted (e.g. References [4] and [5]);
c) research be conducted for high priority initiatives, such as coupling lab and field testing, improving indoor
emissions protocols, climate change impacts, and developing a pool of resources for testing stoves;
d) all protocols be rigorously evaluated by an independent, technically qualified group; and
e) the acceptability of a protocol for a particular stove and tier designation be determined by the ability of the
test procedure to repeat the performance metric within one-third of the distance between tiers, under
conditions that are consistent with the test specification.
Resolution 2
The International Workshop on Cookstoves recognizes that laboratory testing may not fully reflect
performance as seen in the field, as performance is dependent on many factors (such as user behaviour,
cultural acceptance and operating conditions), and it is critical that these factors be incorporated in future
standards and protocols.
Resolution 3
The full range of exposure to household air pollution is currently being compiled by the World Health
Organization (WHO) in new indoor air quality guidelines for household fuel combustion (due to be published in
2013). The International Workshop on Cookstoves recommends that the evidence of health risks across these
guidelines be reviewed to ensure consistency with future standards or International Workshop Agreements.
Resolution 4
The International Workshop on Cookstoves recommends that a performance indicator (and corresponding
protocols) for durability be developed and included in a future standard or International Workshop Agreement.
In addition, the International Workshop on Cookstoves recommends further research be conducted and
protocols be developed as needed to adequately evaluate the safety of all stove types and fuels (e.g. solar,
kerosene, propane and solid fuel).
Resolution 5
The International Workshop on Cookstoves recommends that emissions relevant to health, environment
(ambient air quality and climate) and performance, in addition to those currently addressed in this International
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IWA 11:2012(E) Guidelines for evaluating cookstove performance
Workshop Agreement, be addressed in a
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