The concept of exergy is defined and applied to district heating systems. The influence from different reference state conditions and system boundaries are explained in some detail. The aim is to show the simplicity and value of using the concept of exergy when analyzing district heating processes. The exergy factor is introduced and applied for a number of Swedish and Danish district heating systems. This varies from 14.2% to 22.5% for Swedish district heating systems. The higher the exergy factor, the more the exergy losses in the passive conversion towards space heating. Large losses revealed in an exergy treatment of a process should be seen as a challenge to achieve technical improvements of the system.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:hh-20298 |
| Date | January 2012 |
| Creators | Gong, Mei, Wall, Göran, Werner, Sven |
| Publisher | Högskolan i Halmstad, Energiteknik, Högskolan i Halmstad, Energiteknik, Chalmers university of technology, Gothenburg, Sweden |
| Source Sets | DiVA Archive at Upsalla University |
| Language | English |
| Detected Language | English |
| Type | Conference paper, info:eu-repo/semantics/conferenceObject, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 13th International Symposium on District Heating and Cooling : 3rd of September – 4th of September: Copenhagen, Denmark, p. 55-60 |
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