This paper was presented at the 4th Micro and Nano Flows Conference (MNF2014), which was held at University College, London, UK. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute, ASME Press, LCN London Centre for Nanotechnology, UCL University College London, UCL Engineering, the International NanoScience Community, www.nanopaprika.eu.The paper presents the experimental investigation of heat transfer intensification in a microjetmicrochannel
cooling module. Applied technology takes benefits from two very attractive heat removal
techniques. When jets are impinging on the surface, they have a very high kinetic energy at the stagnation
point, also in microchannels boundary layer is very thin allowing to obtain very high heat fluxes.
Main objective of this paper was to experimentally investigate the performance of a microjet-microchannel
cooling module. Intense heat transfer in the test section has been examined and described with precise
measurements of thermal and flow conditions. Reported tests were conducted under steady state conditions
for single phase liquid cooling.
Obtained database of experimental data were compared to standard cooling techniques, and compared with
superposed semi-empirical models for minichannels and microjet cooling, Mikielewicz and Muszynski
(2009). Gathered data with analytical solutions and numerical computer simulation allows the rational design
and calculation of hybrid modules and optimum performance of these modules for various industrial
applications
