Design of Coil-Wound Once-Through Steam Generator System for Concentrating Solar Power Plants
DOI:
https://doi.org/10.52825/solarpaces.v2i.918Keywords:
Coil-Wound Heat Exchanger, Once-Through Steam Generator, Concentrating Solar PowerAbstract
The viability of solar tower plants is endangered owing to multiple failures, mainly in their steam generators. These failures produce unscheduled shutdowns with significant economic losses that increase the financing costs of this technology due to its technological risk. On the other hand, if the flexibility of the steam generator rises, solar power tower plants could participate in the energy adjustment market, improving their returns, encouraging the penetration of variable renewable energies, and providing security to the power grid. A novel steam generator system design based on a once-through steam generator composed of two coil-wound heat exchangers is proposed for a highly reliable, flexible, and quick response steam generator. Coil-wound heat exchangers reduce thermal stress and allow part load operation, while once-through steam generators permit fast load changes and reduce the number of components. Compared with traditional shell and tube designs, the results indicate that the proposed steam generator reduces heat exchange area by 22%, molten salt pressure drop by 79%, and tube-to-tubesheet joints by 73%.
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Copyright (c) 2024 Dario Pardillos-Pobo, Pedro-Ángel González-Gómez, María Berbey-Burgos, Domingo Santana
This work is licensed under a Creative Commons Attribution 4.0 International License.
Accepted 2024-06-14
Published 2024-11-20
Funding data
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Ministerio de Ciencia e Innovación
Grant numbers PID2021-122895OB-I00;TED2021-129326B-I00 -
Ministerio de Educación, Cultura y Deporte
Grant numbers FPU-21/01212
