Experimental Study of Rewetting of a Superheated Plate with Structured Capillary-Porous Coating by Flowing Liquid Film

Development of Methods for Heat Transfer Enhancement During Nitrogen Boiling to Ensure Stabilization of HTS Devices

“…As the results of the authors in [115] show, the use of micro-structured capillary-porous coatings under these conditions would also be effective. As follows from analysis of experimental data [115][116][117][118][119], both these methods make it possible to significantly intensify the heat transfer during boiling in falling liquid films. In these works, results were obtained on the effect on heat transfer during boiling and evaporation in falling films of a mixture of R114/R21 freons and liquid nitrogen for various types of heat-release wall microstructures created by the deforming cutting method: micro-fins with semi-closed pores and micro-pin and needle structures.…”

“…A promising way to enhance the heat transfer during boiling of film flows is the application of microstructured coatings, created, for example, by the deforming cutting method [108,109]. As the results of the authors in [115] show, the use of micro-structured capillary-porous coatings under these conditions would also be effective. As follows from analysis of experimental data [115][116][117][118][119], both these methods make it possible to significantly intensify the heat transfer during boiling in falling liquid films.…”

“…The authors of these works have shown that the HTC on a surface with a capillary-porous coating is approximately 3-5 times higher than that on a surface without a coating. In [151,152], experiments on boiling in thin horizontal layers of n-dodecane liquid were conducted with practically the same profiles of micro-structured capillary-porous coatings as in [88,89,115], where the heat-release surface in experiments with boiling liquid nitrogen was modified by the above-mentioned method of directional plasma spraying.…”