Experimental and Analytical Study on the Influence of Saturation Pressure and Surface Roughness on Pool Boiling CHF of HFE-7100

Figure 10

Impacting and spreading of working fluid HFE-7100 on four copper surfaces. (a) Smooth surface. (b) Rough surface polished by a 1200# sandpaper. (c) Rough surface polished by a 600# sandpaper. (d) Rough surface polished by a 320# sandpaper.

(a)

(b)

(c)

(d)