Investigating Thermodynamic Assessment of Geothermal Power Systems for Green Applications

Abstract

Geothermal power is one of the most significant green energy resources as it generates beneficial productivities such as power, heating, and cooling due to its clean and reliable nature. The main aim of this chapter is to design and study the geothermal power-based integrated plant for the aim of produces power, hydrogen, ammonia, and heating. In this regard, a comprehensive effectiveness evaluation is performed with the energetic and exergetic performances viewpoints. Furthermore, to determine the irreversibility, the exergy destruction rate of the system components is also explored. On the other hand, the system in this proposed chapter consists of two flash and two separators, high- and low-pressure steam turbines, organic Rankine cycle, PEM electrolyzer, and ammonia reactor. In addition, the energetic and exergetic performances of the single generation, cogeneration, trigeneration, and multigeneration options are compared. Finally, the proposed integrated geothermal power plant produces 0.0245 and 0.2119 kgs−1 of hydrogen and ammonia. Also, the total power generation capacity is computed as about 22 MW. Furthermore, the energetic and exergetic efficiencies of the whole combined model are 0.4213 and 0.3706, respectively.