Abstract: 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).

Abstract: The invention refers to a thermal control device for controlling the temperature of a heat source by means of transferring heat from the heat source to the ambient environment, through the circulation of a fluid in the device, said device comprising an evaporator (10) collecting heat from the heat source, a condenser (30) rejecting heat to the ambient environment, a compensation chamber (20), and liquid (50) and vapor (40) transport lines connecting the evaporator (10) and the condenser (30), the fluid flowing through said transport lines (40, 50), the device further comprising a thermal electrical cooler (90), the thermal electrical cooler (90) further comprising a thermal saddle (80) attached to the cold side of the thermal electrical cooler (90), and a thermal radiator (100) attached to the hot side of the thermal electrical cooler (90), such that heat is rejected to the ambient environment directly through the thermal radiator (100), when the thermal control device operates in a hot environment, the ambie