A pump cooling system may include a cooling body configured to be fitted to a pump housing to receive heat from the pump housing via a heat conducting path between the cooling body and pump housing. The cooling body may have a passage through which, in use, a cooling fluid is passed to conduct heat away from the cooling body. The pump cooling system includes a cooling control mechanism configured to provide a gap in the heat conducting path at pump operating temperatures below a predefined temperature so heat conduction from the pump housing to the cooling body is interrupted.

A thermal rectifier includes a first panel, a second panel, and a switching mechanism. The switching mechanism includes a first thermally conductive portion thermally connected to the first panel and a second thermally conductive portion thermally connected to the second panel. The switching mechanism switches, as at least one of the first thermally conductive portion or the second thermally conductive portion changes their shape or dimensions, from a heat radiation state to a heat insulation state, or vice versa. The heat radiation state is a state where the first thermally conductive portion and the second thermally conductive portion are thermally coupled together. The heat insulation state is a state where the first thermally conductive portion and the second thermally conductive portion are thermally isolated from each other.

A heat transfer device is disclosed having a housing including a first main wall and a second main wall, the housing having a sealed internal cavity, a liquid contained in the internal cavity, and a mixer able to set the liquid in motion, the heat transfer device being able to be switched between a first state and a second state in which the liquid is in motion and transfers heat by convection between the first main wall and the second main wall, the thermal conductance between the first main wall and the second main wall in the first state being four times less than the thermal conductance between the first main wall and the second main wall in the second state.

A thermoelectric generator has a heat conducting body that exchanges heat with the environment according to environmental temperature changes, a heat storing body, and a thermoelectric conversion unit and thermal resistance body arranged between the heat conducting body and the heat storing body. One end of the thermal resistance body and one end of the thermoelectric conversion unit are in contact with each other. The other end of the thermal resistance body is in contact with the heat conducting body, and the other end of the thermoelectric conversion unit is in contact with the heat storing body. The surface of the heat storing body is covered by a covering layer having certain heat insulation properties. The temperature difference generated between the heat conducting body and the heat storing body is utilized to extract electric energy from the thermoelectric conversion unit.

A two-phase type heat transfer device (10) for heat sources operating at a wide temperature range. The heat transfer device (10) includes an evaporator (21) collecting heat from a heat source, a condenser (21) providing heat to a cold sink by a first working fluid passing through liquid and vapor transport lines (25, 27) that connect the evaporator (21) and the condenser (23). The evaporator (21) is arranged inside a saddle (31) configured for avoiding that the temperature of the first working fluid in the evaporator (21) is greater than its critical point. The invention also refers to aircraft ice protection systems using the heat transfer device (10).

Thermal control systems that include variable conductivity metamaterial units are provided. The metamaterial unit a plurality of thermally conductive plates, a plurality of first bonds, each of which connects two adjoining thermally conductive plates, and a plurality of second bonds, each of which connects two adjoining thermally conductive plates. Also included is a load inducer constructed to cause the plurality of thermally conductive plates to move between a non-contact state, in which opposing surfaces of the plurality of thermally conductive plates are not in direct contact, to a contact state, in which the opposing surfaces of the plurality of thermally conductive are in at least partial direct contact, so as to change a thermal conductivity of the metamaterial unit from a first value to a second value. Through the ability to design the effective thermal conductivity as a function of temperature a passive thermal control capability is achieved by the introduction of thermal stability regions that will passively ensure thermal stability.

A thermoelectric generator has a heat conducting body that exchanges heat with the environment according to environmental temperature changes, a heat storing body, and a thermoelectric conversion unit and thermal resistance body arranged between the heat conducting body and the heat storing body. One end of the thermal resistance body and one end of the thermoelectric conversion unit are in contact with each other. The other end of the thermal resistance body is in contact with the heat conducting body, and the other end of the thermoelectric conversion unit is in contact with the heat storing body. The surface of the heat storing body is covered by a covering layer having certain heat insulation properties. The temperature difference generated between the heat conducting body and the heat storing body is utilized to extract electric energy from the thermoelectric conversion unit.

The invention relates to a cooling module for a vehicle control unit, comprising a cooling element, connections for conducting a coolant through the cooling element, a turbulence insert placed in the cooling element comprising at least first cooling fins, and at least one first bimetal located in the cooling element, wherein the at least one first bimetal is placed such that it displaces the at least one group of first cooling fins depending on a temperature-dependent shape change of the at least one first bimetal. The invention also relates to a vehicle control unit with a cooling module and a method for water cooling a vehicle control unit.

A socket includes a housing configured to receive a removable Data Storage Device (DSD) and a Thermal Interface Material (TIM). An assembly of the socket is attached to the housing and configured to expand due to heat. In a thermally expanded state, the assembly causes the TIM to come into contact with the removable DSD to draw heat away from the removable DSD. According to another aspect, a retaining strip or assembly is attached to a housing in a configuration such that the retaining strip or assembly expands due to heat to increase a resistance to removal of the removable DSD from the housing when the retaining strip or assembly is in a thermally expanded state.

A heat exchanger, including: a columnar honeycomb structure having cells partitioned by partition walls composed of ceramics, each cell penetrating from a first end to a second end to form a flow path for a first fluid; an inner tubular member fitted to an outer peripheral surface of the honeycomb structure to circumferentially cover that surface; a spacer directly and circumferentially covering an outer peripheral surface of the inner tubular member as well as indirectly and circumferentially covering the outer peripheral surface of the honeycomb structure; and an outer tubular member directly and circumferentially covering the spacer; wherein the spacer has a three-dimensional structure that allows flow of a second fluid therein and suppresses movement of bubbles in the second fluid; and wherein at least one opening part between the inner tubular member and the outer tubular member forms a gate of the spacer for the second fluid.