Pool Boiling Heat Transfer Performance for Deformable Surfaces

The micro-nano structured surface was a research hotspot in the field of pool boiling heat transfer enhancement. It is known that after processing, the geometry manufactured by traditional materials cannot change to adapt to the heat load of heating devices. However, the deformable surface fabricated by shape memory alloys can change its geometry with heat flux to achieve the adaptive temperature control of heating surface. Based on the above-mentioned idea, four kinds of hydrophobic surfaces were fabricated to compare the boiling heat transfer performance in water at absolute pressure 28 kPa between the deformable and fixed surfaces. By comparing experimental results and classic theoretical correlation, it is found that the existing correlation cannot predict the experimental results of deformable surface well. So it is necessary to develop a new boiling heat transfer mechanism and theoretical formula.