The following Annex 42 publications are available for download:
Annex 42 Final Report
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.
Residential cogeneration (also known as microcogeneration and small-scale combined heat and power) is an emerging technology with the potential to deliver energy efficiency and environmental benefits. The concurrent production of electrical and thermal energy from a single fuel source can, if designed and operated correctly, reduce primary energy consumption and associated greenhouse gas (GHG) emissions. The distributed nature of this generation technology also has the potential to reduce electrical transmission and distribution losses, and reduce peak demands on central power generation plants.
This booklet documents the research of Annex 42 of the International Energy Agency’s Energy Conservation in Buildings and Community Systems Programme (IEA/ECBCS), which was established in 2003 to develop simulation models that advance the design, operation, and analysis of residential cogeneration systems, and to apply these models to assess their technical, environmental, and economic performance.
The models developed by the Annex were integrated into existing whole-building simulation tools to consider the coupling between the cogeneration device, other heating, ventilation and air conditioning components, and the buildings’ thermal and electrical demands. This development work was complemented by extensive experimentation on 13 prototype and early-market, residential-scale cogeneration devices. Data were also collected and collated to characterize key loads on residential cogeneration: occupant-driven electrical loads and hot water usage patterns.
The new data and tools produced by Annex 42 were then applied to assess the performance of specific prototype, early-market, and in some cases hypothetical, cogeneration devices in four different national contexts. This analysis considered how fuel-cell-based and combustionbased cogeneration devices might perform under a wide range of operating conditions. These studies revealed that, in certain circumstances, residential cogeneration systems can significantly reduce primary energy consumption and GHG emissions relative to conventional means of supplying heat and power, despite the fact that many of the current prototypes considered have far from optimal performance.
This booklet provides a summary of the work and findings of Annex 42, the full details of which are contained in 1 400 pages of reports that are provided on the accompanying CD and are available from the IEA/ECBCS website (www.ecbcs.org).
( Download )
Subtask A: The characterization cogeneration systems and occupant driven electrical and domestic hot water usage patterns.
-
Residential Cogeneration Systems: A Review Of The Current Technologies:
This report provides useful information that has been gathered by the Annex from a large number of sources on the current state-of-knowledge of residential cogeneration technologies.
-
European and Canadian non-HVAC Electric and DHW Load Profiles for Use in Simulating Residential Cogen. Systems:
This report discusses the creation of occupant-driven electric and domestic hot water profiles for use in Annex 42. The data files containing the profiles are available for download using the 'Data files' link on the right.
-
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.
-
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.
-
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.
-
Review of Existing Residential Cogeneration Systems Performance Assessments and Evaluations:
This report provides an overview of published performance assessment studies and experimental evaluations of residential cogeneration systems.
-
Methodologies for the Performance Assessment of Residential Cogeneration Systems:
This report presents the Performance Assessment Methodology developed within Annex 42.
-
Performance Assessment of Residential Cogeneration Systems in Switzerland:
This report presents the performance assessment study for a number of micro combined heat and power generation systems in residential buildings in Switzerland.
-
Performance Assessment of Prototype Residential Cogeneration Systems in Single Detached Houses in Canada:
This report presents the performance assessment study for prototype residential cogeneration systems in Canada.
-
Performance of Residential Cogeneration Systems in Germany:
This report presents the performance assessment study for residential cogeneration systems in Germany.
-
Performance Assessment of Residential Cogeneration Systems in Different Italian Climatic Zones:
This report presents the performance assessment study for an internal combustion engine based residential cogeneration system in Italy.
-
Performance Assessment of Residential Cogeneration Systems in Southern Italy:
This report presents the performance assessment study for residential cogeneration systems in Southen Italy.