TRICKLING COOLER-RADIATOR Russian patent published in 2005 - IPC

FIELD: spacecraft temperature control systems; removal of low-potential heat from on-board systems of spacecraft.

SUBSTANCE: proposed trickling cooler-radiator includes heat-transfer agent storage and delivery system, drop generator with acoustic oscillation exciting element, drop collector, transfer pumps and pipe lines. Trickling cooler-radiator is provided with heat stabilization system including heaters mounted on structural members of cooler-radiator and thermostatting units made in form of shield-vacuum insulation of these members. Said system is also provided with bypass pipe line laid between drop generator and collector and provided with volumetric expansion compensator (with electric heater) and automatic temperature control unit ensuring operation of heaters by signals from respective sensors. To reduce emission of heat-transfer agent, trickling cooler-radiator is provided with hydraulic accumulators at drop generator inlet and at drop accumulator outlet. Passages of output grid of drop generator have geometric and hydraulic characteristics varying from axis of symmetry towards periphery for smooth distribution of temperature field. Drop collector may be passive with inner surface formed by walls of one or several slotted passages through which heat-transfer agent is delivered for forming moving film.

EFFECT: enhanced efficiency and reliability.

2 cl, 2 dwg