IEA/ECBCS Annex 42 is an international research project focusing on the modelling of fuel cell and other cogeneration technologies in the building environment. Annex 42 operates under the auspices of the International Energy Agency's (http://www.iea.org) Energy Conservation in Community Systems (http://www.ecbcs.org/) program.

Objectives of Annex 42 include:
  • the characterization of occupant-driven electrical and domestic hot water usage patterns,
  • the development and validation models of fuel cell and cogeneration technologies,
  • the integration of these models into existing, publicly-available whole-building simulation programs, and
  • the technical, environmental and economic assessment of selected cogeneration applications using the models developed within the annex.

The following Annex 42 publications are available for download:

Annex 42 Final Report

  • An Experimental and Simulation-Based Investigation of the Performance of Small-Scale Fuel Cell and Combustion-Based Cogeneration Devices Serving Residential Buildings:

    This report summarizes the results of IEA/ECBCS Annex 42, an international task-shared research effort conducted by 26 organizations in 10 countries over the course of 5 years. Annex 42 conducted experimental work and developed simulation models to advance the design, operation, and analysis of residential cogeneration systems, and applied these models to assess their technical, environmental, and economic performance.

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  • Subtask A: The characterization cogeneration systems and occupant driven electrical and domestic hot water usage patterns. Subtask B: Development, implementation and validation of cogeneration system models in building simulation programs. Subtask C: Demonstrative technical, environmental and economic assessment of selected cogeneration applications using the models developed in Subtask B.