Application of Ceramic Lattice Structures to Design Compact,High Temperature Heat Exchangers: Material and Architecture Selection |
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| Authors: | Marco Pelanconi Simone Zavattoni Luca Cornolti Riccardo Puragliesi Edoardo Arrivabeni Luca Ferrari Sandro Gianella Maurizio Barbato Alberto Ortona |
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| Affiliation: | 1.Mechanical Engineering and Materials Technology Institute (MEMTi), University of Applied Sciences (SUPSI-DTI), Polo Universitario Lugano, 6962 Lugano, Switzerland; (S.Z.); (L.C.); (R.P.); (E.A.); (M.B.); (A.O.);2.Department of Industrial Engineering, University of Padova, 35131 Padova, Italy;3.EngiCer SA, 6828 Balerna, Switzerland; (L.F.); (S.G.) |
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| Abstract: | In this work, we report the design of ceramic lattices produced via additive manufacturing (AM) used to improve the overall performances of compact, high temperature heat exchangers (HXs). The lattice architecture was designed using a Kelvin cell, which provided the best compromise among effective thermal conductivity, specific surface area, dispersion coefficient and pressure loss, compared to other cell geometries. A material selection was performed considering the specific composition of the fluids and the operating temperatures of the HX, and Silicon Carbide (SiC) was identified as promising materials for the application. The 3D printing of a polymeric template combined with the replica method was chosen as the best manufacturing approach to produce SiC lattices. The heat transfer behaviour of various lattice configurations, based on the Kelvin cell, was determined through computational fluid dynamics (CFD). The results are used to discuss the application of such structures to compact high temperature HXs. |
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| Keywords: | heat exchanger material selection lattice structure silicon carbide CFD |
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