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Publication details

Title
Molten alkali carbonates as alternative engineering fluids for high temperature applications

Authors
V.M.B. Nunes
INSTITUTO POLITÉCNICO DE TOMAR
M.J.V. Lourenço
Dep. Química e Bioquímica
CQE-Ciências - Centro de Química Estrutural-Ciências
F.J.V. Santos
Dep. Química e Bioquímica
CQE-Ciências - Centro de Química Estrutural-Ciências
C.A. Nieto de Castro
Dep. Química e Bioquímica
CQE-Ciências - Centro de Química Estrutural-Ciências

Document type
Journal articles

Scope
International

Refereeing
Yes

Document type
Full paper

Summary
Molten salts are a very relevant member of industrial fluids for high temperature applications, such as catalytic medium for coal gasification, molten salt oxidation of wastes, heat transfer fluids or latent, sensible heat storage and solar (CSP) or nuclear power station operations. Available data on thermophysical properties, applications and a discussion of the state of the art for molten alkali carbonates and its mixtures like pure Li2CO3, Na2CO3 and K2CO3, mixtures of Li2CO3-Na2CO3, Li2CO3-K2CO3 (binary eutectics) and Li2CO3-Na2CO3-K2CO3 (ternary eutectic) and nanofluids based in these carbonate melts are presented. These melts are especially suitable for application at higher temperature regimes, like those involving high temperature energy storage, coolants or molten salts oxidations of wastes and therefore the accurate knowledge of their most important thermophysical properties is essential for efficient energy transfer and storage, because of their impact on energy efficiency, namely in energy savings and decrease of carbon footprint. From the analysis performed it can be concluded that the scatter of data found for molten alkali carbonates, added to present and future applications, still justifies further studies on these systems, to support their application as alternative engineering fluids. Additionally, some comments on how to improve present situation of methods and measurements are made, especially in the area of thermal conductivity.

Date of Publication
2019-05

Institution
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA

Where published
Applied Energy

ISSN
0306-2619

Publisher
Elsevier BV

Volume
242

Number of pages
7
Starting page
1626
Last page
1633

Identifiers
DOI - http://dx.doi.org/10.1016/j.apenergy.2019.03.190

Rankings
Web Of Science Q1 (2018) - 8.426 - ENERGY & FUELS - SCIE
SCIMAGO Q1 (2018) - 3.455 - Energy (miscellaneous)

Keywords
Molten salts Thermophysical properties Molten carbonates Energy storage Heat transfer fluids Nanosalts


Export

APA
V.M.B. Nunes, M.J.V. Lourenço, F.J.V. Santos, C.A. Nieto de Castro, (2019). Molten alkali carbonates as alternative engineering fluids for high temperature applications. Applied Energy, 242, 1626-1633. ISSN 0306-2619. eISSN . http://dx.doi.org/10.1016/j.apenergy.2019.03.190

IEEE
V.M.B. Nunes, M.J.V. Lourenço, F.J.V. Santos, C.A. Nieto de Castro, "Molten alkali carbonates as alternative engineering fluids for high temperature applications" in Applied Energy, vol. 242, pp. 1626-1633, 2019. 10.1016/j.apenergy.2019.03.190

BIBTEX
@article{35933, author = {V.M.B. Nunes and M.J.V. Lourenço and F.J.V. Santos and C.A. Nieto de Castro}, title = {Molten alkali carbonates as alternative engineering fluids for high temperature applications}, journal = {Applied Energy}, year = 2019, pages = {1626-1633}, volume = 242 }