Investigation of hydrogen production performance of chlor-alkali cell integrated into a power generation system based on geothermal resources

Is the H2 economy realizable in the foreseeable future? Part I: H2 production methods

“…H 2 in molecular form can be produced from many different sources, and in many different ways [21] as shown in Figure 6. Among different production methods (Figure 6), currently the most widely used is fossil fuel/natural gas steam reforming [22], whereas electrolysis and byproduct of chlor-alkali industry [23] provide secondary source of H 2 . The current and future H 2 production technologies focus on using diverse, domestic resources including fossil fuels, such as natural gas and coal (with carbon sequestration); nuclear energy; and renewable energy sources, such as biomass, wind, solar, geothermal, and hydro-electric power using a wide range of processes [24][25][26][27].…”

A review of geothermal energy-driven hydrogen production systems

“…However, in the case of using a chlor-alkali cell, two more substances could be produced in addition to the hydrogen, namely, chlorine and sodium hydroxide as shown in Figure 6. Karakilcik et al [91] investigated a chlor-alkali cell based on a geothermal powered system to produce hydrogen. The authors deduced that if the geothermal fluid temperature rises from 140°C to 155°C, the amount of hydrogen produced and electricity generated will increase from 10.5 kg/h to 21.1 kg/h and 2.5 MW to 3.9 MW, respectively.…”

A critical review of power generation using geothermal-driven organic Rankine cycle

“…They found that the application of an accurate thermodynamic model results in different design decisions in comparison to a simplified model. Karakilcik et al [55] investigated a polygeneration system for electricity and hydrogen generation using geothermal energy. An ORC system and a chlor-alkali cell were used for power, and hydrogen generation, respectively.…”