A review of the capabilities of high heat flux removal by porous materials, microchannels and spray cooling techniques
| Autor: | Sławomir Pietrowicz, Przemysław Smakulski |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Critical heat flux 020209 energy Nuclear engineering Plate heat exchanger Energy Engineering and Power Technology Mechanical engineering 02 engineering and technology Heat transfer coefficient Heat sink 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Heat flux Heat transfer Heat spreader 0202 electrical engineering electronic engineering information engineering Micro heat exchanger 0210 nano-technology |
| Zdroj: | Applied Thermal Engineering. 104:636-646 |
| ISSN: | 1359-4311 |
| DOI: | 10.1016/j.applthermaleng.2016.05.096 |
| Popis: | Most advanced, high power technologies require a large amount of heat to be dissipated from the limited surface area or space. Solutions to such problems are vital, among others, in the field of computer microchips, where promising designs of future high power processing components can reach heat fluxes up to 500 W cm −2 in the background or even 1000 W cm −2 at the hot-spots. Such high requirements can be satisfied by so-called Direct Cooling Techniques , which are heat removal techniques that apply porous media, microchannel heat sinks and spray cooling. The paper presents an exhaustive comparison of the aforementioned techniques with respect to the media type, operating fluids and flow character, maximal achievable heat flux dissipation and heat transfer coefficient, pressure drop, the Reynolds number, other selected thermal and/or flow parameters. Special attention is paid to the spray cooling technique, which is the most effective direct cooling technology. For that reason, several parameters, such as: spray and fluid types, maximum achieved heat flux, heat transfer coefficient, the Sauter Mean Diameter and flow rate are studied and compared in detail. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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