Boiling liquid water - Free Convection Gas : 10 - 40 W/m2K (steam boiler + radiation)
Boiling liquid water - Forced Liquid flowing (Water) : 300 - 1000 W/m2K (evaporation of refrigerators or brine coolers)
Boiling liquid water - Condensing vapor water : 1500 - 6000 W/m2K (evaporators steam/water)