Print Email Facebook Twitter Addressing Different Approaches for Evaluating Low-Exergy Communities Title Addressing Different Approaches for Evaluating Low-Exergy Communities Author Jansen, S.C. (TU Delft Building Services) Meggers, F. (Princeton) Contributor Heiselberg, Per Kvols (editor) Date 2016-05-24 Abstract The IEA Annex 64 focusing on low-ex communities aims at the improvement of energy conversion chains on a community scale, using exergy analysis as the primary evaluation mode. Within this Annex the participants discuss important aspects and available methods for energy and exergy assessment as well as the added value of aiming for low exergy (LowEx) communities. The reason to exploit the exergy approach is that it provides critical insight into how the maximum potential of energy resources can be used, resulting in a reduced need for high quality energy sources. This insight cannot be obtained with energy analysis. However, other aspects play a role when designing an optimal energy system, such as costs or CO2 emissions. There can be reasons that justify exergy destruction. To address these issues the working definition for the annex is that “a LowEx community is a community for which the energy system is designed in such a way that exergy destruction is minimized, or that all exergy destruction is justified by other reasons (e.g. economic / social, other sustainability reasons)”. This paper gives more background on the definition and presents a general overview of exergy analysis of energy systems in the built environment. Different approaches and opinions are discussed, including how these affect the results. The aim is to create a common ground for consideration low exergy systems at the community scale by setting clear precedents for defining evaluation methods, system boundaries, and input classification. Subject exergylow-excommunity energy system To reference this document use: http://resolver.tudelft.nl/uuid:26a6dcdf-0057-4b41-ba50-2d118ef658c9 Publisher Aalborg University ISBN 87-91606-35-7 Source CLIMA 2016: Proceedings of the 12th REHVA World Congress, 10 Event CLIMA 2016 - 12th REHVA World Congress, 2016-05-22 → 2016-05-25, Aalborg, Denmark Part of collection Institutional Repository Document type conference paper Rights © 2016 S.C. Jansen, F. Meggers Files PDF Jansen_Meggers_2016_Addre ... A_2016.pdf 581.5 KB Close viewer /islandora/object/uuid%3A26a6dcdf-0057-4b41-ba50-2d118ef658c9/datastream/OBJ/view