Pool boiling on micro-fin array with wire mesh structures

Enhanced pool boiling heat transfer on mini- and micro- structured surfaces

“…This model, which is a modification of the one presented in [3], treats the area of the vertical tunnel and the area of adjacent horizontal tunnels jointly. One assumption remained -the holes in the foil are made only to supply the tunnels with fluid.…”

“…To determine the growth period (Δt 1-2 ), d p was substituted for w tun in relationship (3). The value of C 1-2 in this equation was selected through numerical simulation in terms of minimizing errors in the calculation of the frequency of bubble departure and heat flux.…”

“…The author of this paper and his collaborators at the Kielce University of Technology have been carrying out in-depth research devoted to determining pool boiling heat transfer coefficients for various working fluids from surface structures with mini-and micro-fins and/or subsurface tunnels and constructing theoretical models [1][2][3][4][5][6][7]. At the same time, the research team headed by Dr. M. Piasecka is studying flow boiling heat transfer for FC-72 in rectangular minichannels with enhanced heating surfaces [8,9,10].…”

Nucleate Pool Boiling Heat Transfer on a Micro-Pin-Finned Surface in Short-Term Microgravity

“…Until now, many kinds of microstructures have been observed, such as microstructured [8], diamond particle [9], micro-re-entrant cavities [10], porous surfaces [11], carbon nanotubes [12], nanowires arrays [13], octagonal micro-posts, or ZnO nanorods, or both [14], Cu micro-porous surface layers [15] micro-fin arrays covered with porous structure [16], microstructured surfaces with a wide range of well-defined surface roughness [17] and metallic foam surface with crossing and single-directional V-shaped groove [18]. These surfaces can actually enhance boiling heat transfer by increasing nucleate site number and effective boiling heat transfer surface area.…”

Experimental investigations and a simplified model for pool boiling on micro-fins with sintered perforated foil

“…), Honda and Wei [14] noticed that compared with a smooth surface, microstructures contribute to the extension of the vapor bubble residence time, which is one of the factors that determine boiling heat transfer intensification. Pastuszko [15] conducted experimental investigations of pool boiling heat transfer on micro-fin arrays covered with a copper wire mesh. The wire mesh with aperture of 0.32, 0.4 and 0.5 mm sintered with the fin tips formed a system of connected perpendicular horizontal tunnels.…”