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

Abstract

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.

Authors:
ORCiD logo [1];  [1];  [1];  [1]; ORCiD logo [1];  [2];  [3]
  1. Lehigh Univ., Bethlehem, PA (United States)
  2. Michoacan Univ. of San Nicolas de Hidalgo, Morelia (Mexico)
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1580373
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
Applied Thermal Engineering
Additional Journal Information:
Journal Volume: 149; Journal Issue: C; Journal ID: ISSN 1359-4311
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; Organic Rankine cycle; Working fluid selection; Supercritical CO2; Geothermal heat mining; Power generation

Citation Formats

Wang, Xingchao, Levy, Edward K., Pan, Chunjian, Romero, Carlos E., Banerjee, Arindam, Rubio-Maya, Carlos, and Pan, Lehua. Working fluid selection for organic Rankine cycle power generation using hot produced supercritical CO2 from a geothermal reservoir. United States: N. p., 2019. Web. doi:10.1016/j.applthermaleng.2018.12.112.
Wang, Xingchao, Levy, Edward K., Pan, Chunjian, Romero, Carlos E., Banerjee, Arindam, Rubio-Maya, Carlos, & Pan, Lehua. Working fluid selection for organic Rankine cycle power generation using hot produced supercritical CO2 from a geothermal reservoir. United States. https://doi.org/10.1016/j.applthermaleng.2018.12.112
Wang, Xingchao, Levy, Edward K., Pan, Chunjian, Romero, Carlos E., Banerjee, Arindam, Rubio-Maya, Carlos, and Pan, Lehua. Mon . "Working fluid selection for organic Rankine cycle power generation using hot produced supercritical CO2 from a geothermal reservoir". United States. https://doi.org/10.1016/j.applthermaleng.2018.12.112. https://www.osti.gov/servlets/purl/1580373.
@article{osti_1580373,
title = {Working fluid selection for organic Rankine cycle power generation using hot produced supercritical CO2 from a geothermal reservoir},
author = {Wang, Xingchao and Levy, Edward K. and Pan, Chunjian and Romero, Carlos E. and Banerjee, Arindam and Rubio-Maya, Carlos and Pan, Lehua},
abstractNote = {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.},
doi = {10.1016/j.applthermaleng.2018.12.112},
journal = {Applied Thermal Engineering},
number = C,
volume = 149,
place = {United States},
year = {Mon Feb 25 00:00:00 EST 2019},
month = {Mon Feb 25 00:00:00 EST 2019}
}

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Works referencing / citing this record:

Interplay of fluids mixing and heat transfer in a dual-loop ORC direct contact heat exchanger used for waste heat utilization
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Economic and environmental comparison of bioethanol dehydration processes via simulation: reactive distillation, reactor–separator process and azeotropic distillation
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Geothermal energy use in hydrogen production: A review
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