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Filtering by: Creator Laubach, P. G. Creator Jajja, Saad A. License Attribution-NonCommercial-NoDerivatives 4.0 (CC BY-NC-ND 4.0)

Geometry and orientation effects in non-uniformly heated microchannel heat exchangers using supercritical carbon dioxide

Creator:

Jajja, Saad A., Sequeira, Jessa M., and Fronk, Brian M.

Abstract:

There is growing interest to use supercritical carbon dioxide (sCO2) as a working fluid in thermal management applications. This study investigates the thermal-hydraulic performance of microchannel heat sinks as a function of flow channel geometry and orientation at operating conditions representative of electronics cooling applications. Three different experimental test sections,...

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26 27 T F lu id ( o C ) P R = 1.1, G = 500 (kg m-2s-1), q = 20 (W cm-2), T in = 20 (oC
Experimental investigation of supercritical carbon dioxide in horizontal microchannels with non-uniform heat flux boundary conditions

Creator:

Jajja, Saad A., Zada, Kyle R., and Fronk, Brian M.

Abstract:

Supercritical carbon dioxide (sCO2) experiences a drastic change in its thermophysical properties near the thermodynamic critical point. A non-linear thermophysical property variation can influence the heat transfer behavior of sCO2 which is not predicted well by conventional single phase heat transfer theory. This can become a major hindrance in the...

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), mass flux (500 ≤ G ≤ 1000 kg m-2 s-1), reduced pressure (1.03 ≤ PR ≤ 1.1), and inlet temperatures (16