Abstract In the current work thermodynamic modeling, exergo-economic and multi-objective optimization of an integrated geothermal based CCHP system coupled with thermoelectric generator is examined. A numerical simulation in the Engineering Equation Solver (EES) is developed to simulate the behavior of the CCHP/TEG integrated system. Exergo-economic modeling to find the cost formation of different streams is done and parametric study with considering different thermodynamic and economic criteria is performed. Thermodynamic analysis reveal that the net output power and total useful products are 139.7 kW and 807 kW. Moreover, the energy and exergy efficiency of the considered system is 55.81 % and 22.63 %, respectively. Parametric study on the CCHP/TEG system for net output power, exergy efficiency, electrical cost rate, and total useful products is carried out. Regarding parametric study the multi-objective optimization with exergy efficiency and electrical cost rate is done. The concept of ideal point is employed to determine the final optimum conditions of CCHP/TEG system. The optimization calculations show that in the final optimum values of the electrical cost rate and exergy efficiency of the system are 12.52 $/h and 22.11 %, respectively. In addition the optimization process indicates that the optimum turbine inlet pressure and separation I inlet temperature are around 8 bars and 13 bars.

中文翻译：

---

通过采用 TEG：3E 分析和多标准优化，提高集成 CCHP 系统的性能，包括 ORC、Kalina 和制冷循环

摘要 在当前的工作热力学建模中，研究了结合热电发电机的基于集成地热的 CCHP 系统的耗能经济和多目标优化。开发了工程方程求解器 (EES) 中的数值模拟来模拟 CCHP/TEG 集成系统的行为。完成了用于发现不同流的成本形成的 Exergo-economic 建模，并进行了考虑不同热力学和经济标准的参数研究。热力学分析表明，净输出功率和总有用产品分别为139.7 kW和807 kW。此外，所考虑系统的能量和火用效率分别为 55.81% 和 22.63%。CCHP/TEG 系统的净输出功率、火用效率、电力成本率的参数研究，并进行总有用的产品。关于参数研究，进行了火用效率和电力成本率的多目标优化。采用理想点的概念来确定 CCHP/TEG 系统的最终优化条件。优化计算表明，系统的电力成本率和火用效率的最终优化值分别为 12.52 $/h 和 22.11 %。此外，优化过程表明，最佳涡轮入口压力和分离 I 入口温度约为 8 巴和 13 巴。优化计算表明，系统的电力成本率和火用效率的最终优化值分别为 12.52 $/h 和 22.11 %。此外，优化过程表明，最佳涡轮入口压力和分离 I 入口温度约为 8 巴和 13 巴。优化计算表明，系统的电力成本率和火用效率的最终优化值分别为 12.52 $/h 和 22.11 %。此外，优化过程表明，最佳涡轮入口压力和分离 I 入口温度约为 8 巴和 13 巴。