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Economic optimization of heat exchanger design for geothermal applications

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Abstract
Geothermal power plants are a promising alternative to polluting fossil fuels. In Belgium, geothermal brines can have production temperatures up to 130°C. This makes them interesting to be used with an Organic Rankine Cycle. The brines have however a high salinity and contain a high amount of carbon dioxide. Most common metallic construction materials will suffer corrosion when in contact with the brine, requiring a high material thickness. This is problematic for heat exchangers, since they are typically designed with an as small as possible wall thickness. Therefore, a heat exchanger model is combined with a corrosion model. This model allows to determine the total cost of ownership of the heat exchanger over its lifetime, taking into account not only the investment cost, but also the operational costs and maintenance costs.An optimal design solution can be determined and by performing a data analysis over the entire design space, clusters of good designs can provide guidelines for heat exchanger manufacturers. The method and results presented are still preliminary.
Keywords
Geothermal, Corrosion, Organic Rankine cycle, Economic

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MLA
Faes, Willem, et al. “Economic Optimization of Heat Exchanger Design for Geothermal Applications.” Proceedings of the 5th International Seminar on ORC Power Systems, edited by S. Karellas and E. Kakaras, The National Technical University of Athens (NTUA), 2019.
APA
Faes, W., Lecompte, S., Van Bael, J., Salenbien, R., Verbeken, K., & De Paepe, M. (2019). Economic optimization of heat exchanger design for geothermal applications. In S. Karellas & E. Kakaras (Eds.), Proceedings of the 5th International Seminar on ORC Power Systems. Athens, Greece: The National Technical University of Athens (NTUA).
Chicago author-date
Faes, Willem, Steven Lecompte, Johan Van Bael, Robbe Salenbien, Kim Verbeken, and Michel De Paepe. 2019. “Economic Optimization of Heat Exchanger Design for Geothermal Applications.” In Proceedings of the 5th International Seminar on ORC Power Systems, edited by S. Karellas and E. Kakaras. The National Technical University of Athens (NTUA).
Chicago author-date (all authors)
Faes, Willem, Steven Lecompte, Johan Van Bael, Robbe Salenbien, Kim Verbeken, and Michel De Paepe. 2019. “Economic Optimization of Heat Exchanger Design for Geothermal Applications.” In Proceedings of the 5th International Seminar on ORC Power Systems, ed by. S. Karellas and E. Kakaras. The National Technical University of Athens (NTUA).
Vancouver
1.
Faes W, Lecompte S, Van Bael J, Salenbien R, Verbeken K, De Paepe M. Economic optimization of heat exchanger design for geothermal applications. In: Karellas S, Kakaras E, editors. Proceedings of the 5th International Seminar on ORC Power Systems. The National Technical University of Athens (NTUA); 2019.
IEEE
[1]
W. Faes, S. Lecompte, J. Van Bael, R. Salenbien, K. Verbeken, and M. De Paepe, “Economic optimization of heat exchanger design for geothermal applications,” in Proceedings of the 5th International Seminar on ORC Power Systems, Athens, Greece, 2019.
@inproceedings{8630391,
  abstract     = {Geothermal power plants are a promising alternative to polluting fossil fuels. In Belgium, geothermal brines can have production temperatures up to 130°C. This makes them interesting to be used with an Organic Rankine Cycle. The brines have however a high salinity and contain a high amount of carbon dioxide. Most common metallic construction materials will suffer corrosion when in contact with the brine,  requiring  a  high  material  thickness.  This  is  problematic  for  heat  exchangers,  since  they  are typically designed  with an as small as possible  wall thickness. Therefore, a  heat exchanger model is combined with a corrosion model. This model allows to determine the total cost of ownership of the heat  exchanger  over  its  lifetime, taking  into  account  not  only  the  investment  cost,  but  also  the operational  costs and  maintenance  costs.An  optimal  design  solution  can  be  determined  and  by performing  a  data  analysis  over  the  entire  design space,  clusters  of  good  designs  can  provide guidelines for heat exchanger manufacturers. The method and results presented are still preliminary.},
  articleno    = {206},
  author       = {Faes, Willem and Lecompte, Steven and Van Bael, Johan and Salenbien, Robbe and Verbeken, Kim and De Paepe, Michel},
  booktitle    = {Proceedings of the 5th International Seminar on ORC Power Systems},
  editor       = {Karellas, S. and Kakaras, E.},
  isbn         = {9789090320380},
  keywords     = {Geothermal,Corrosion,Organic Rankine cycle,Economic},
  language     = {eng},
  location     = {Athens, Greece},
  pages        = {8},
  publisher    = {The National Technical University of Athens (NTUA)},
  title        = {Economic optimization of heat exchanger design for geothermal applications},
  url          = {https://www.orc2019.com/online/proceedings/documents/206.pdf},
  year         = {2019},
}