Development of new heat exchanger network designs for a four-step Cu–Cl cycle for hydrogen production

Ahmet Ozbilen, Ibrahim Dincer and Marc A. Rosen

Energy, 2014, vol. 77, issue C, 338-351

Abstract: The Aspen Plus process simulation package is used to evaluate the characteristics of the four-step Cu–Cl thermochemical water splitting cycle in terms of energy and exergy, to support the ultimate development of a pilot plant. Alternative designs for the heat exchanger network using Aspen Energy Analyzer are developed and studied for thermal management within the Cu–Cl cycle. The simulation results for the four-step Cu–Cl cycle illustrate that the steam-to-copper molar ratio can be reduced to 10 from an initial value of 16 by decreasing the pressure of the hydrolysis reactor. A thermodynamic model of the four-step Cu–Cl cycle is developed to determine its energy and exergy efficiencies. The energy and exergy efficiencies of the four-step Cu–Cl cycle are determined to be 55.4% and 66.0%, respectively.

Keywords: Copper-chlorine cycle; Hydrogen production; Aspen Plus; Heat exchanger network; Thermal management; Exergy (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:77:y:2014:i:c:p:338-351

DOI: 10.1016/j.energy.2014.08.051

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