摘要:
Loop heat pipe apparatus (1) for heat transfer and thermal control, using a two-phase fluid as a working media and comprising: - at least one evaporator (2) to be connected with a heat source and comprising a thermal stabilization-compensation chamber (10) attached to the at least one evaporator (2) and a secondary capillary pump (40) located inside the thermal stabilization-compensation chamber (10), - at least one condenser (27) to be connected with a heat sink, - liquid lines (24) and vapour lines (28) connecting the at least one evaporator (2) and the at least one condenser (27), and - a remote compensation chamber (20), wherein the thermal stabilization-compensation chamber (10) comprises a two-phase reservoir (5) and a liquid accumulator reservoir (6) separated by a heat exchange surface (15), such that the remote compensation chamber (20) is hydraulically connected with the two-phase reservoir (5) and the liquid accumulator reservoir (6).
摘要:
Thermal control device for controlling the temperature of a heat source (7) by means of transferring heat from the heat source (7) to a heat sink (8) by means of the circulation of a fluid in the device, said device comprising an evaporator (2) collecting heat from the heat source (7), a condenser (4) rejecting heat to the heat sink (8), and transport lines (3, 5) connecting the evaporator (2) and the condenser (4), the fluid flowing through said transport lines (3, 5), the device further comprising a valve (20) located in one of the transport lines (3, 5), said valve (20) opening and closing the flow of fluid in the transport line (3, 5) modifying the hydraulic resistance of said transport line (3, 5), the pressure drop in the circuit of transport lines (3,5) - valve (20) - condenser (4) being such that enables to maintain the evaporator operation temperature (Top) substantially within a predetermined value, independent on the condenser temperature (Tc).
摘要:
Heater (90) for a thermal control device controlling thermal loads in a spacecraft by an evaporation-condensation cycle of a working fluid which is kept inside the mentioned thermal control device, the thermal control device comprising an evaporator (11) effecting evaporation of the working fluid in the evaporation-condensation cycle, the evaporator (11) comprising grooves (1) within its structure, the heater (90) comprising at least one conductive cartridge as a conductive envelope, in the inside of which a heating element for effecting start-up of the evaporator (11) is kept, such that the at least one cartridge is directly inserted into at least one of the grooves (1) of the evaporator (11), providing direct thermal interface between the working fluid and the heating element.
摘要:
Thermal module (1) for use on a spacecraft to control thermal loads coming from a heat source (3) comprising a two-phase loop system (5) and a heat rejection system (13), the two-phase loop system (5) comprising a thermal collector (7), a heat flow regulator (10), a by-pass line (6) and a condenser (11), the condenser (11) and the heat rejection system (13) being thermally coupled, such that the heat flow regulator (10) of the two-phase loop system (5) redirects part of the thermal loads from the heat source (3) to the condenser (11), from which the heat rejection system (13) directs said thermal loads to a heat sink (14), the temperature of the heat source (3) being regulated by bypassing another part of the thermal loads back to the thermal collector (7) through the by-pass line (6) in a proportional manner, to avoid the heat source (3) overcooling, being the heat rejection system (13) designed based on the hottest possible conditions for the spacecraft mission.