Main researchers:
Prof. Gherhardt Ribatski
Prof. José Alexandre Diniz
Prof. Luben Cabezas-Gómez
Collaborators:
Prof. Luís Alberto Barêa
Prof. Giuseppe Cirino
Prof. Newton Frateschi
Prof. Stanislav Mochkalev
Description:
The main objective is to develop solar irradiation absorbers that efficiently convert the absorbed energy into thermal energy through flow boiling in microchannels. In order to achieve the proposed objective, a detailed study of the literature concerning flow boiling in multi-microchannels heat sinks will be carried out, such that some design guidelines for channels distribution and surface engineering for optimum heat sinks can be defined, based in previous investigations; fundamental aspects of confined flow boiling will be studied using rapid infrared imaging; a computational tool based on Lattice-Boltzmann method will be developed, such that bubble growth and detachment in confined and free conditions can be simulated and later extended to flow boiling in microchannels with distinct geometries; the best performing proposed geometries will be fabricated with micro- and nanofabrication techniques, then will be characterized based on their heat transfer capacity, critical heat flux, pressure drop, and thermal stability.
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