surface-condenser

from The Century Dictionary.

• noun In steam engineering, a condenser in which exhaust-steam is condensed by contact with surfaces of metal cooled by a flow of cold water on their sides opposite the condensing surfaces.
• noun A metallic cone, or a series of pipes, heated by steam, over which a liquid is made to flow in a thin film to cause it to part with its water by evaporation. See evaporating-cone.