Abstract: We experimentally investigate pool boiling heat transfer on four 16 mm×24 mm sized copper plane, 120 mesh sand paper polished surface, corroded metal surface and micro channels surface with deionized water as working fluid. Results show that heat transfer flux density increases with the increase of temperature difference ΔT for the four heat transfer surfaces. The boiling heat transfer of the copper plane is less than that of the other three surfaces, so slightly corroded surface is more benefit for boiling heat transfer. No bubbles generate on the four surfaces when ΔT<4 ℃. Boiling heat transfer of 120 mesh sand paper polished surfaceis greater than that of micro channels surface when ΔT=6 ℃.

Key words: pool boiling, corroded surface, polished surface by sand paper, surface with channels