Geothermal energy has been used in district heating systems for many years. In these old-fashion systems, the heat of geothermal fluid is transferred to secondary fluid (water) by pipes, pumps, and heat exchanger systems. Although these systems have an easy engineering structure, the efficient use of the geothermal source is deficient depending on the thoughtless installations. In this regard, the operating parameters such as temperature and operations provided against the losses such as insulation are much more important; however, the limits of these treatments are not definite. In this regard, advanced exergy analysis is a useful tool since it takes the systems' real, unavoidable, and ideal cases into consideration through conventional exergy analysis. So, the advanced exergy method enables the determination of the improvement potential of the systems. In the advanced exergy method, the unavoidable conditions are decisive factors that should be determined, taking the economic, technological, and available thermodynamic factors into account. Pareto principle can be an alternative solution to determine the unavoidable conditions. Pareto principle indicates that 80% of the impact is sourced from the 20% potential cause. Therefore, according to Pareto principle, it is available to increase benefits by 80% through a change of 20% in the technical parameters. In this study, the advanced exergy method was conducted for the whole Simav geothermal district heating system. The unavoidable conditions were determined based on Pareto principle. According to the analysis, the highest avoidable exergy destruction ratio was determined as 8.14% for the production (well) field, where the total was 19.96%. In conclusion, an improvement potential of 10.33% was determined for the overall system.

多年来，地热能一直用于区域供热系统。在这些老式系统中，地热流体的热量通过管道、泵和热交换器系统传递给二次流体（水）。尽管这些系统具有简单的工程结构，但由于安装粗心，地热源的有效利用不足。在这方面，温度等运行参数和针对绝缘等损耗提供的运行更为重要。然而，这些治疗的限度并不确定。在这方面，先进的火用分析是一个有用的工具，因为它通过传统的火用分析考虑了系统的真实、不可避免和理想的情况。因此，先进的火用方法能够确定系统的改进潜力。在高级火用法中，不可避免的条件是应确定的决定性因素，应考虑经济、技术和可用的热力学因素。帕累托原则可以作为确定不可避免条件的替代解决方案。帕累托原则表明 80% 的影响来自 20% 的潜在原因。因此，根据帕累托原理，通过改变20%的技术参数，可以增加80%的效益。在这项研究中，对整个 Simav 地热区域供热系统进行了先进的火用法。不可避免的条件是根据帕累托原理确定的。经分析，生产（井）田最高可避免的火用破坏率为8.14%，合计为19.96%。总之，确定整个系统的改进潜力为 10.33%。