The paper presents the test results of pool boiling heat transfer on the rough surface and the surface covered with capillary – porous microstructure. The porous layer is made of copper fibers sintered in the reduction atmosphere. The volumetric porosity amounted to 68%, while its height 1 mm. Distilled water and ethyl alcohol were used as the working fluids. The experiments have been carried out under the atmospheric pressure. Enhancement of heat transfer in relation to the smooth reference surface has been recorded especially for the low range of superheats, which might be related to the density of active nucleation sites. Experimental results have been compared with selected models of boiling available in literature.
Nov 6, 2023
Nov 17, 2022
|Orman, Łukasz J., 2020, Pool boiling heat transfer from rough and microstructure coated surfaces
|Nov 6, 2023
Grabowski, Mirosław Błachnio, Ewelina
Dąbek, Lidia Orman, Łukasz J.