Manifold heat exchanger

Heat pipe heat exchange apparatus for conducting heat between a gas stream and a liquid comprising:

• an elongated substantially horizontal manifold;
• a liquid carrying pipe extending within said manifold in spaced relation thereto;
• a plurality of spaced heat tubes having a vaporizable liquid medium partially filling same;
• means mounting said heat tubes in heat exchange relation to said gas stream in a generally side-by-side manner for individual contact with said gas stream;
• conduit means communicating with said manifold for collecting said liquid medium from said heat tubes for controlling the liquid level therein and for conveying vaporized medium into said manifold in heat exchange relation to said liquid within said pipe;
• said spaced heat tubes having one end carried by said conduit means being open thereto and an opposing end extending away therefrom;
• said heat tubes being substantially horizontal relative to said conduit means so that said liquid medium in said heat tubes is maintained at a level at which said tubes are only partially filled along substantially the entire length thereof;
• and
• said heat tubes being carried by opposing sides of said conduit means extending outwardly from both said sides in substantially horizontal relationship.