PRESSURE CAPILLARY PUMP Russian patent published in 2018 - IPC F28D15/00 

FIELD: heat exchange.

SUBSTANCE: invention relates to two-phase heat transfer devices operating in a closed evaporation-condensation cycle in which the circulation of the working medium is effected by the action of capillary forces. Pressure capillary pump of the present invention comprises a sealed housing, the inner cavity of which is separated by a lyophobic capillary-porous partition into the evaporator cavity and the condenser cavity. In the evaporator cavity there is a wick. Condenser and evaporator cavities are connected by a system of pipes into a closed loop. Housing is filled with a two-phase working medium, the liquid phase filling the porous space of the wick, the condenser cavity and the piping system, and the saturated vapor fills the space between the wick and the lyophobic partition. Housing can be made in the form of two cylindrical shells arranged coaxially to form an annular cavity, the heat emission source being arranged along the axis of the housing. For direct conversion of thermal energy into an electric pressure capillary pump, it can contain a liquid-metal MHD generator, while the housing is filled with a working medium in the form of a liquid metal.

EFFECT: increase in pressure, increase in efficiency of conversion of thermal energy into mechanical energy of the liquid working medium flow.

3 cl, 5 dwg