Tipo
Artigos em Conferência
Tipo de Documento
Poster without full or short paper
Título
Are nanofluids a suitable choice for heat transfer applications?
Participantes na publicação
Caroline Gonçalves (Author)
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Maria José V. Lourenço (Author)
Dep. Química e Bioquímica
CQE
Manuel Matos Lopes (Author)
Dep. Química e Bioquímica
Carlos A. Nieto de Castro (Author)
Dep. Química e Bioquímica
CQE
Resumo
The possible use of nanomaterials and nanosystems as alternative heat transfer fluids require the development of a strategy for their production, use and disposal, involving environmental and safety requirements, which can restrict the a priori selected systems. Therefore, the implementation of a regulatory framework, a driving force for nanotechnologies development, is essential for the acceptance by society. A strategy to select a given nanofluid or IoNanofluid for a given application, bound by the environmental and safety regulatory frameworks, was recently proposed [1]. \nAlthough nanofluids (an IoNanofluids) have been proposed to be used in several heat transfer applications, the discussions are mostly based in thermal conductivity enhancements, without paying attention to the type of nanomaterial propose, or the stability at long-term of the nanofluid (stable dispersions of nanomaterials in molecular fluids or ionic melts). The behaviour of the complex nanosystems, sols in colloid language, need to be studied completely, in order that these systems became a real, safe and economic alternative to heat transfer fluids.\nIt is the purpose of this paper to analyse the necessary strategy of their application in industry, exemplifying technically with the determination of heat transfer coefficients in a selected heat exchanger (concentric tube), using a promising new ionic liquid and their mixtures with water as the base fluid, [C2mim][CH3SO3] (ST35™, BASF), for which their thermophysical properties were recently determined [2,3]. The nanomaterial used was a natural melanin, obtained from cuttlefish, and previously demonstrated to increase significantly the efficiency of thermal storage in a pilot solar collector [1,4]. A discussion will also be made in general, to the real added value of using nanofluids based in water as heat transfer fluids. \n[1] Maria José Lourenço, João Alexandre, Charlotte Huisman, Xavier Paredes, Carlos Nieto de Castro.The balance between energy, environmental security, and technical performance: the regulatory challenge of nanofluids. Special Issue on Colloids and Nanofluids for Energy Management, Nanomaterials 2021, 11(8), 1871(22). Selected as a Featured Paper. DOI: https://doi.org/10.3390/nano11081871 \n[2] F.E.B. Bioucas, S.I.C. Vieira, M.J.V. Lourenço, F.J.V. Santos, M.L.M. Lopes, C. A. Nieto de Castro and K. Massonne, “[C2mim][CH3SO3] – A Suitable New Heat Transfer Fluid? Part 1. Thermophysical and Toxicological Properties”, Ind. Eng. Chem. Res. (2018) 57, (25), 8541-8551. DOI: https://doi.org/10.1021/acs.iecr.8b00723 \n[3] F.E.B. Bioucas, C.S.G.P. Queirós, D. Lozano-Martín, M. Ferreira, X. Paredes, A.F. Santos, F.J.V. Santos, M.L.M. Lopes, M. I. Lampreia, M.J.V. Lourenço, C. A. Nieto de Castro and K. Massonne. [C2mim][CH3SO3] – A Suitable New Heat Transfer Fluid? Part 2. Thermophysical Properties of Its Mixtures with Water. Ind. Eng. Chem. Res., 2022, 61, (5), 2280–2305. DOI: https://doi.org/10.1021/acs.iecr.1c02970\n[4] K. Massonne, S. Vieira, M.J. Lourenço, C. Nieto de Castro. Use of Melanin or Melanin Particles for Solar Thermal Energy Conversion. Patent Number EP 3 228 192 A2, 11 October 2017.\n
Editor
University Rovira i Virgili, Khalifa University
Data de Publicação
2023-05-21
Instituição
FACULDADE DE CIÊNCIAS DA UNIVERSIDADE DE LISBOA
Evento
International Conference on Properties and Phase Equilibria For Product And Process Design, PPEPPD2023, Tarragona, Spain, May 21-25, 2023
Identificadores da Publicação
ISBN - 9788409514014
Local
La Pineda, Tarragona, Spain
Organizadores
University Rovira i Virgili, Khalifa University, Texas A&M Qatar
Editora
University Rovira i Virgili, Khalifa University