چكيده به لاتين
The performance of pool boiling heat transfer to the surface structure can be enhanced by using techniques such as sintering, electrochemical deposition, anodized and using channels. The base of improving is by increasing the heat transfer coefficient and the maximum heat flux.
This thesis focuses on the surface structure established by the mesochannel method to increase heat transfer in pool boiling process and describes its improvement methods, after checking the effects of physical parameters and boiling heat transfer
After studying methods of structures, wire cut method was selected to create channels; and the necessity impact of mesochannels were investigated. Then the specified method, test plan, identification, explaination of the problem and the geometry of surfaces are presented.
Furthermore, the effects of different parameters such as degree, depth, width of channel and fin were compared with a plain copper surface chip. The results show a 2.7 increase in heat transfer coefficient. Finally the effects of channels with a round base, checkered surface chips and the impact of meso fins on pool boiling were surveyed, resulting in a 60% increase of heat transfer compared to plain copper surfaces. The comparison of nucleation and bubble dynamics of different surfaces is also mentioned.
Keywords: Pool boilin; Heat transfer; Mesochannel; Geometry; Copper; Wirecut
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