IEA/ECBCS Annex 42 Publications

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.
    • Specifications for Modelling Fuel Cell and Combustion-Based Residential Cogeneration Devices within Whole-Building Simulation Programs:

      This report contains the model specifications for the fuel cell and combustion cogeneration models developed by Annex 42.

      This document contains the specifications for a series of residential cogeneration device models developed within IEA/ECBCS Annex 42.

      The devices covered are: solid oxide and polymer exchange membrane fuel cells (SOFC and PEM), and internal combustion and Stirling engine units (ICE and SE).

      These models have been developed for use within whole-building simulation programs and one or more of the models described herein have been integrated into the following simulation packages: ESP-r, EnergyPlus, TRNSYS and IDA-ICE. The models have been designed to predict the energy performance of cogeneration devices when integrated into a residential building (dwelling). The models account for thermal performance (dynamic thermal performance in the case of the combustion engine models), electrochemical and combustion reactions where appropriate, along with electrical power output. All of the devices are modelled at levels of detail appropriate for whole-building simulation tools.

      Each specifications includes:

      • a description and justification for the specific forms of model developed;
      • a detailed description of all of the equations used within each model and;
      • the model data requirements.

      The model specifications are generic and will allow code developers outside Annex 42 to integrate the models into their own simulation programs.

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    • Experimental Investigation of Residential Cogeneration Devices and Calibration of Annex 42 Models:

      This report documents the experimental investigations of residential cogeneration systems conducted within Annex 42 and the subsequent calibration of the Annex 42 models using these data.

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    • Inter-model Comparative Testing and Empirical Validation of Annex 42 Models for Residential Cogeneration Devices :

      This report documents the comparative testing and empirical validation of the Annex 42 residential cogeneration system models.

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    Subtask C: Demonstrative technical, environmental and economic assessment of selected cogeneration applications using the models developed in Subtask B.