Working fluid selection for organic Rankine cycle power generation using hot produced supercritical CO2 from a geothermal reservoir

Wang, Xingchao; Levy, Edward K.; Pan, Chunjian; Romero, Carlos E.; Banerjee, Arindam; Rubio-Maya, Carlos; Pan, Lehua

doi:10.1016/j.applthermaleng.2018.12.112

Title: Working fluid selection for organic Rankine cycle power generation using hot produced supercritical CO₂ from a geothermal reservoir

Journal Article · 24 February 2019 · Applied Thermal Engineering

DOI: https://doi.org/10.1016/j.applthermaleng.2018.12.112 · OSTI ID:1580373

^[1]; Levy, Edward K. ^[1]; Pan, Chunjian ^[1]; Romero, Carlos E. ^[1];

^[1]; Rubio-Maya, Carlos ^[2]; Pan, Lehua ^[3]

Lehigh Univ., Bethlehem, PA (United States)
Michoacan Univ. of San Nicolas de Hidalgo, Morelia (Mexico)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Geothermal heat mining simulations using supercritical CO₂ (sCO₂) were performed in this research. Working fluid selection criteria for power generation using sCO₂ from a geothermal reservoir are then presented for subcritical, superheated and supercritical organic Rankine cycles (ORCs). Meanwhile, method of working fluid classification for ORC is proposed. To get the most feasible ORC design, this study introduces the concept of “turning point” for isentropic and dry working fluids, as well as minimum turbine inlet temperature for wet working fluids. A thermodynamic model was developed with capabilities to obtain the optimal working fluid mass flow rate, evaporation temperature, superheated temperature, and supercritical pressure, to evaluate the thermal performance of the three ORC approaches using hot produced sCO₂. With this model, thirty potential working fluids with critical temperatures in the range from 50 to 225 °C were screened for utilizing hot produced sCO₂ considering physical properties, environmental and safety impacts, and thermodynamic performances. Finally, the thermodynamic results were compared for all possible working fluids.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1580373

Journal Information:: Applied Thermal Engineering, Journal Name: Applied Thermal Engineering Journal Issue: C Vol. 149; ISSN 1359-4311

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Geothermal energy use in hydrogen production: A review Ghazvini, Mahyar; Sadeghzadeh, Milad; Ahmadi, Mohammad Hossein International Journal of Energy Research https://doi.org/10.1002/er.4778	journal	August 2019
Economic and environmental comparison of bioethanol dehydration processes via simulation: reactive distillation, reactor–separator process and azeotropic distillation Guzmán-Martínez, Carlos Eduardo; Castro-Montoya, Agustín Jaime; Nápoles-Rivera, Fabricio Clean Technologies and Environmental Policy, Vol. 21, Issue 10 https://doi.org/10.1007/s10098-019-01762-5	journal	October 2019
Interplay of fluids mixing and heat transfer in a dual-loop ORC direct contact heat exchanger used for waste heat utilization Xiao, Qingtai; Luo, Wen; Huang, Junwei Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 234, Issue 11 https://doi.org/10.1177/0954406220902493	journal	January 2020

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Title: Working fluid selection for organic Rankine cycle power generation using hot produced supercritical CO2 from a geothermal reservoir

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Title: Working fluid selection for organic Rankine cycle power generation using hot produced supercritical CO₂ from a geothermal reservoir