A. HepbasliAli KeçebaşHepbasli, ArifKecebas, Ali2025-10-062013037877880378-778810.1016/j.enbuild.2013.02.0192-s2.0-84875184606https://www.scopus.com/inward/record.uri?eid=2-s2.0-84875184606&doi=10.1016%2Fj.enbuild.2013.02.019&partnerID=40&md5=c04020eef56c8f7f798cf0c44a412e43https://gcris.yasar.edu.tr/handle/123456789/10112https://doi.org/10.1016/j.enbuild.2013.02.019This paper comparatively evaluates exergy destructions of a geothermal district heating system (GDHS) using both conventional and advanced exergetic analysis methods to identify the potential for improvement and the interactions among the components. As a real case study the Afyon GDHS in Afyonkarahisar Turkey is considered based on actual operational data. For the first time advanced exergetic analysis is applied to the GDHSs in which the exergy destruction rate within each component is split into unavoidable/avoidable and endogenous/exogenous parts. The results indicate that the interconnections among all the components are not very strong. Thus one should focus on how to reduce the internal inefficiency (destruction) rates of the components. The highest priority for improvement in the advanced exergetic analysis is in the re-injection pump (PM-IX) while it is the heat exchanger (HEX-III) in the conventional analysis. In addition there is a substantial influence on the overall system as the total avoidable exergy destruction rate of the heat exchanger (HEX-V) has the highest value. On the overall system basis the value for the conventional exergetic efficiency is determined to be 29.29% while that for the modified exergetic efficiency is calculated to be 34.46% through improving the overall components. © 2013 Elsevier B.V. © 2013 Elsevier B.V. All rights reserved.Englishinfo:eu-repo/semantics/closedAccessAdvanced Exergetic Analysis, Buildings, Conventional Exergetic Analysis, District Heating System, Exergy Destruction, Geothermal Energy, Advanced Exergetic Analysis, Avoidable Exergy Destructions, Comparative Studies, Conventional Exergetic Analysis, District Heating System, Exergetic Efficiency, Exergy Destructions, Geothermal District Heating System, Buildings, District Heating, Geothermal Energy, Geothermal Heating, Heat Exchangers, ExergyAdvanced exergetic analysis, Avoidable exergy destructions, Comparative studies, Conventional exergetic analysis, District heating system, Exergetic efficiency, Exergy destructions, Geothermal district heating system, Buildings, District heating, Geothermal energy, Geothermal heating, Heat exchangers, ExergyGeothermal EnergyConventional Exergetic AnalysisAdvanced Exergetic AnalysisBuildingsDistrict Heating SystemExergy DestructionArticle