Capture of Geothermal Heat as Chemical Energy

Journal Article · Fri Dec 11 00:00:00 EST 2015 · Energy Sources. Part A, Recovery, Utilization, and Environmental Effects

DOI:https://doi.org/10.1080/15567036.2012.721056· OSTI ID:1339155

Jody, Bassam J. ^[1]; Petchsingto, Tawatchai ^[1]; Doctor, Richard D. ^[1]; Snyder, Seth W. ^[1]

---

1. Argonne National Lab. (ANL), Argonne, IL (United States). Energy Systems

In this paper, fluids that undergo endothermic reactions were evaluated as potential chemical energy carriers of heat from geothermal reservoirs for power generation. Their performance was compared with that of H₂O and CO₂. The results show that (a) chemical energy carriers can produce more power from geothermal reservoirs than water and CO₂ and (b) working fluids should not be selected solely on the basis of their specific thermo-physical properties but rather on the basis of the rate of exergy (ideal power) they can deliver. Finally, this article discusses the results of the evaluation of two chemical energy carrier systems: ammonia and methanol/water mixtures.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Geothermal Technologies Office
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1339155
• Journal Information: Energy Sources. Part A, Recovery, Utilization, and Environmental Effects, Vol. 37, Issue 24; ISSN 1556-7036
• Publisher: Taylor & Francis
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
chemical reactions
fluids
geothermal energy
power generation
thermodynamic analysis