Publicou 8 edições por ano
ISSN Imprimir: 1065-5131
ISSN On-line: 1563-5074
IF:
2.3
5-Year IF:
1.8
Immediacy Index:
0.2
Eigenfactor:
0.00037
JCI:
0.6
SJR:
0.433
SNIP:
0.593
CiteScore™::
4.3
H-Index:
35
Indexed in
Cooling Characteristics with Microchanneled Structures
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RESUMO
Experiments were conducted to investigate the heat transfer characteristics and cooling performance of subcooled liquid, water or methanol, flowing through rectangular cross-section microchanneled structures machined onto a stainless steel plate. The results provide significant data and considerable insight into the heat transfer and cooling mechanisms using microchanneled structures. It was found that a heat transfer or flow mode transition existed when the heating rate or wall temperature was increased. This transition was found to be induced by the variation in liquid thermophysical properties due to the great rise of the liquid temperature in the microstructures. The influence of such parameters as liquid velocity, subcooling, property variation, and microchannel geometric configuration on the heat transfer behavior were experimentally investigated, as well as the cooling performance, heat transfer and liquid flow mode transition. The experiments indicated that the single phase forced convection and flow boiling characteristics were different from those in normally sized tubes and the heat transfer in microchannels was intensified. No apparent partial nucleate boiling existed for subcooled flow boiling, i.e., fully-developed boiling was induced much earlier in the microchannels.
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