Abstract: A system includes a wall panel with an exterior wall. An interior wall is separated from the interior wall by a variable insulation gap occupied by an insulation medium. A flow driver is connected in fluid communication with the insulation medium. The flow driver is configured to selectively switch properties of the insulation medium in the variable insulation gap between a conduction mode and in an insulation mode. The insulation medium has a first effective thermal conductivity in the insulation mode, and a second effective thermal conductivity in the conduction mode. The first effective thermal conductively is lower than the second effective thermal conductivity.

Abstract: The invention relates to a metal rotary heat transfer assembly (1) for a rotary air heat exchanger comprising a corrugated metal strip (2) and a metal support flat strip (3) wound spirally in the circumferential direction and alternately in the radial direction on a central element (4), wherein the corrugated metal strip (2) is corrugated in the circumferential direction, and wherein in a cross-section made in a plane perpendicular to the longitudinal axis (01) of the assembly (1) said corrugated metal belt (2) comprises a set of corrugation leg portions (21) interconnected alternately by corrugation crest portions (22) and corrugation trough portions (23), and wherein a plurality of transverse through channels (5) passing through said metal rotary heat transfer assembly (1) in the direction of its longitudinal axis (01) is defined between the corrugated metal strip (2) and the metal support flat strip (3), characterized in that, louvers (24) are formed in the corrugation leg portions (21) of the corrugated m

Abstract: A vapor chamber includes: a body, including an accommodating cavity; a wick structure layer, located in the accommodating cavity; and a wick structure channel, located in the accommodating cavity. The wick structure channel is at least partially located outside the wick structure layer; or, the wick structure channel is located in the wick structure layer, and fluid resistance of the wick structure channel is smaller than fluid resistance of the wick structure layer.

Abstract: A carbon dioxide distribution system and carbon dioxide subcooler useable within such a system are disclosed. The carbon dioxide subcooler includes an insulated enclosure forming an interior volume, the insulated enclosure having a supply inlet, a supply outlet, and a cooling inlet in fluidic communication with the interior volume. The carbon dioxide subcooler further includes a coil supply tube positioned within the interior volume, the coil supply tube being fluidically connected between the supply inlet and the supply outlet.

Abstract: A device for controlling radiative heat flow between interior surfaces and human occupants includes a tunable emissivity material disposed between electrodes is provided. The tunable emissivity material has a low emissivity state with emissivity smaller than about 0.5 over wavelength range from about 7 microns to about 14 microns for reflecting heat, and a high emissivity state with emissivity larger than about 0.8 over the same wavelength range for absorbing heat. A voltage is applied to tune the emissivity material between states to regulate radiative heat flow and maintain thermal comfort. The tunable emissivity material may be a conducting polymer, inorganic oxide such as tungsten trioxide or vanadium dioxide, or lithium titanate. The device can be applied to walls, floors, ceilings, or windows.

Abstract: A device and systems for cooling hardware components is disclosed. The smart cold plate (CP) device includes a first inlet port for supplying a first coolant path, a second inlet port for supplying a second coolant path, and a valve for selectively controlling a flow of a coolant between the first and second inlet ports and an internal port, the internal port connecting the first and second inlet ports to a CP. The device also includes an external port connected to the CP for removing the coolant from the smart CP device and a connector through which power is supplied to the valve. Various cooling systems incorporating the smart CP device are disclosed.

Abstract: An electric work vehicle includes a chassis, a battery housing to house a plurality of battery modules, a liquid cooling system, at least one electric motor, and at least one inverter. The liquid cooling system includes a pump, a radiator, and a fan. The battery housing is supported by the chassis. The at least one inverter is electrically connected to the plurality of battery modules and the at least one electric motor. The pump is attached to a back surface of the battery housing. The radiator and the fan are attached on a front surface of the battery housing. The at least one inverter is attached to a side surface of the battery housing that faces a width direction. The at least one inverter and the at least one electric motor are mounted between the fan and the pump in a front-rear direction.

Abstract: A thermal energy storage (TES) system converts variable renewable electricity (VRE) to continuous heat at over 900° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. The TES system is configured to include control system components that reduce thermal losses associated with component inefficiency.

Abstract: The present disclosure provides a drain assembly for an AC furnace coil unit. The drain assembly includes a drain pan defining one or more drain channels extending longitudinally therealong, and an arcuate heat shield detachably coupled to the drain pan. The arcuate heat shield extends along a length of the drain pan. The arcuate heat shield is configured to define a cavity between an inner surface thereof and the drain pan, and distribute airflow, incident on an outer surface thereof, along longitudinal sides of the drain pan.

Abstract: The flow speed distribution of a refrigerant in a cooling apparatus is made uniform. A cooling apparatus provided includes: a top plate; a casing portion having a base plate facing the top plate, and a refrigerant delivery portion arranged between the top plate and the base plate, the casing portion provided with two opening portions to function as an inlet port through which a refrigerant is let into the refrigerant delivery portion and an outlet port through which the refrigerant is let out; a cooling fin portion arranged in the refrigerant delivery portion of the casing portion and between the two opening portions; and a loss adding portion arranged in the refrigerant delivery portion of the casing portion and between the cooling fin portion and at least one of the two opening portions, the loss adding portion generating pressure loss in the refrigerant passing therethrough.

Abstract: A heat sink includes a plurality of heat pipes to be thermally connected to a heating element, and a heat dissipation section thermally connected to the plurality of heat pipes, in which in the plurality of heat pipes, at least evaporation sections to be thermally connected to the heating element have flattened portions whose cross sectional shape in a direction orthogonal to a heat transfer direction of the plurality of heat pipes is flattened, and surfaces in the flattened portions in a thickness direction are arranged facing the heating element.

Abstract: This disclosure is directed to a three-dimensional vapor chamber device having a thermal base, a vertical thermal plate arranged up-right on the thermal base, and a working fluid accommodated in the thermal base and may flow to the vertical thermal plate. A first chamber having a first capillary structure is defined in the thermal base. A second chamber having a second capillary structure is defined in the vertical thermal plate. The first chamber and the second chamber are connected with an inlet and a return port. The second chamber has a flow channel structure connected between the inlet and the return port. The working fluid may flow to the second chamber through the inlet, pass the flow channel structure and return to the first chamber through the return port, so to define a specific flow path leading to a desirable and stable heat transfer efficiency.

Abstract: A thermal energy storage (TES) system converts variable renewable electricity (VRE) to continuous heat at over 900° C. Intermittent electrical energy heats a solid medium. Heat from the solid medium is delivered continuously on demand. Heat delivery via flowing gas establishes a thermocline which maintains high outlet temperature throughout discharge. The delivered heat which may be used for processes including power generation and cogeneration. The TES system is configured to include a heat exchange system with overheat thermal protection.

Abstract: The disclosure is directed to a thermosyphon cooling device having a heat-exchange plate and a plurality of roll-bond fins. An evaporation chamber is defined inside the heat-exchange plate. A heat-exchange surface and a top surface are disposed at two sides of the heat-exchange plate. A capillary structure is arranged in the evaporation chamber, and the capillary structure is corresponding to the heat-exchange surface. The roll-bond fins are arranged upright on the top surface, and a plurality of condensing chambers communicating with the evaporation chamber are defined in each of the roll-bond fins, respectively. Each of the condensing chambers communicates with each of the evaporation chambers through at least one overflow port, respectively, and a working fluid is contained in the condensing chambers. Each of the condensing chambers is extended across the at least one overflow port in a direction perpendicular to a normal line of the heat-exchange plate.

Abstract: In a temperature regulation unit (10), a flow passage (50) for a fluid is formed between a plurality of rod-shaped members (30) which extend parallel to each other so as to be spaced apart from each other and are formed from porous metal; in the flow passage (50), the fluid flows along a flow direction which is a direction orthogonal to a direction in which the rod-shaped members (30) extend; and the flow passage (50) meanders along the flow direction.

Abstract: In one or more embodiments, one or more systems may comprise a heatpipe with a ratio between a cross-section area for a working fluid and one or more of a tube thickness and a wick thickness that is substantially constant along the length of the heatpipe. A heatpipe may have an evaporator section having a constant longitudinal profile and a condenser portion with a non-constant longitudinal profile. A wick inside the heatpipe may have a thickness based on a position in the heatpipe. The condenser portion may comprise a plurality of sections, with each section having a constant longitudinal profile.

Abstract: A liquid cooling vapor chamber heat dissipation module includes a liquid cooling cover, a metallic top cover, and a metallic bottom cover. The liquid cooling cover includes a top portion, a sidewall and an accommodating space. The sidewall includes a liquid inlet and a liquid outlet. The outer heat-dissipating surface of the top cover has a plurality of columnar heat-dissipating structures. The inner evaporation surface of the metallic bottom cover has parallel bottom grooves and protrusive supporting structures disposed between the bottom grooves. An integrated vapor chamber is formed by engaging the metallic top and bottom covers. The liquid cooling cover engages with the outer heat-dissipating surface of the metallic top cover with the columnar heat-dissipating structures accommodating within the accommodating space, which allows cooling liquid to enter the accommodating space from the liquid inlet and flow through the columnar heat-dissipating structures, and flow out from the liquid outlet.

Abstract: A photonic cooling device for a heat source comprises a coupler and extractor layer. The coupler layer is configured to guide (i) first light into the extractor layer, (ii) second light into the extractor layer that is defined based on at least one heat-source characteristic to target a given region that corresponds to a hot spot region of the heat source, and (iii) third light away from the extractor layer, thereby cooling the heat source. The extractor layer comprises a fluorescent medium and is configured to (a) guide fourth light to the coupler layer responsive to the first light that is indicative of the at least one heat-source characteristic, (b) up-convert the second light via fluorescence at the given region of the extractor layer, and (c) based on the up-conversion, output the third light to the coupler layer, thereby extracting heat from the hot spot region of the heat source.

Abstract: This invention provides a thermal energy storage device (100) comprising a powder bed (110), at least two electrodes (301, 302, 303), and at least one heat transfer tube (200). The powder bed (110) has an electrical resistivity in a range of 500-50,000 Qm. The at least two electrodes (301, 302, 303) are embedded in the powder bed (110) and arranged to heat the powder bed (110) by providing a voltage between the electrodes (301, 302, 303). The at least one heat transfer tube (200) is arranged to contain a heat transfer fluid and has an inlet (210) and an outlet (220) connectable to a thermal energy consumer (30). The heat transfer tube (200) and the powder bed (110) are thermally coupled via an electrically insulating material.

Abstract: A heat exchanger comprises a stack of sets of fins and tubes attached to or encompassed by embossed plates comprising a void. In some embodiments, the fins overlap the void having a peripheral margin of the fin attached to the peripheral margin around the void. In some embodiments, the fins comprise through fluid apertures allowing lateral fluid flow. In some embodiments, the plates comprise lateral peripheral protrusions enabling selective sealing of gaps between adjacent stacked plates by unselective application of heat or adhesive to a face of the heat exchanger. In some embodiments, the plates comprise uniformizing protrusions in a fluid inlet and/or outlet zone that reduce the amount of non-uniform fluid mass flow between different channel protrusions of heat exchanging zones of the set. Also disclosed are methods for assembly and selective sealing of the heat exchanger and an apparatus comprising the same.