Heat Transfer during Boiling in Horizontal Layers of HFE-7100 on Smooth and Modified Surfaces
摘要
Experimental data were obtained on heat transfer in horizontal layers of dielectric liquid HFE-7100 of various heights at atmospheric pressure. The heat transfer during boiling was studied on a smooth stainless steel surface and on a capillary-porous stainless steel coating manufactured by the SLM/SLS 3D printing technology. Comparison of the values of temperature pressure and critical heat flux on the smooth surface and on the capillary-porous coating has shown that in HFE-7100 layers with height below 6 mm, the heat transfer regime changes from pool boiling to boiling in thin layers of liquid. At a heat flux density of 100 kW/m2, the temperature difference obtained on the capillary-porous coating was six times lower than that on the smooth surface.