Analysis and Design of Innovative Systems
for LOW-EXergy in the Built Environment
about costexergy
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About COST action C24: COSTeXergy

In buildings, high-grade energy is often used in heating, cooling and ventilation systems to meet low-grade heat demands, resulting in a mismatch between the quality levels of energy supply and end-use. Exergy is a thermodynamic concept which is useful for quantifying the mismatch between the low quality of heat required in buildings, and the high quality level of electricity and fossil fuels often used in heat supply systems. Application of exergy analysis to the built environment is likely to favour systems supplying and utilising low-grade thermal energy, and hence to support thermally neutral buildings. Exergy also provides a thermodynamic basis for developing sustainability indicators for construction, considering materials and energy through the entire life cycle of buildings.

This action addresses demand and supply aspects of the exergy chain in the built environment, including renewable energy supply and human thermal comfort. The target audience includes researchers, educators and students, industry (manufacturers and service providers), standards bodies, planners and policy makers.

The Costexergy Action provides a wide setting for exergy researchers to interact with building professionals and with wider segments of society (e.g. planners, policy makers, standards bodies). Such interaction, in turn, enhances the possibilities of achieving significant energy savings by applying the exergy concept to the built environment.

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