COAXIAL MULTI-TUBE ENGINE Russian patent published in 2010 - IPC F01K25/00 F28D15/02 

FIELD: engines and pumps.

SUBSTANCE: proposed coaxial multi-heat pipe engine comprises evaporation and condensation chambers consisting of vertical shells with their inner surface coated with strips and grid made from porous material and wick, all having their open end faces connected to covers of appropriate distribution (separation) sections. Evaporation chamber separated, from below, by concave perforated entrainment separator, accommodates distributing manifold furnished with nozzles arranged at the evaporation shell centers. Evaporation and condensation chambers communicate, via O-ring, with working chamber housing coaxially mounted power turbines. The latter have the peripheral edges of their vanes rigidly attached to inner wall of said working chamber, along normal to said inner wall surface. Distributing manifold center accommodates cylindrical vessel and feed pump communicated with distributing manifold of evaporation chamber.

EFFECT: higher efficiency.