Abstract: A thermal energy storage system configured to maintain thermal stratification and enhance energy storage efficiency over repeated charge and discharge cycles. The system includes a containment structure, such as a repurposed hydrocarbon wellbore, configured to retain a thermal energy storage fluid. A plurality of phase change material (PCM) elements are encapsulated within microcapsules or macro-encapsulated tubes and positioned within top and/or bottom regions of the containment structure. The PCM elements absorb and release latent heat at predetermined phase transition temperatures to stabilize and narrow the thermocline formed within the thermal fluid column. A reversible high-temperature heat pump (RHTHP) may be integrated to facilitate thermal energy input during charging and energy conversion during discharging.

Abstract: The present invention relates to a novel heat exchanger water trap particularly suited for utilizing the heat present in hot bathing water. The heat exchanger water trap comprises a shell (5) with a liquid inlet (7) for receiving a liquid to be heated and a liquid outlet (3) for said liquid to exit once heated. The heat exchanger further comprises a heat exchange chamber (6) defined by the shell (5), an upper plate (19), a lower plate (10) and an inner wall (12). A plurality of drainpipes (13) having an inner surface and an outside surface through whish a discard liquid can pass and wherein said plurality of drainpipes (13) passing though the heat ex-change chamber (6), whereby the liquid to be heated is in contact with at least part of the outside surface of said plurality of drainpipes (13).

Abstract: A pipe temperature adjusting system includes: a liquid conducting pipe; a heat-insulating cover covering the liquid conducting pipe in such a manner as to define a cylindrical space between the heat-insulating cover and the liquid conducting pipe; a heat exchange flow path disposed in the cylindrical space and along the liquid conducting pipe and allowing a heat exchange medium to flow through the heat exchange flow path; and a pump configured to supply the heat exchange medium into the heat exchange flow path. Covering the liquid conducting pipe with the cylindrical space and causing the heat exchange medium to flow through the heat exchange flow path in the cylindrical space adjusts the internal temperature of the cylindrical space to thereby adjust the temperature of the liquid conducting pipe.

Abstract: A heat spreading element is provided and includes first and second pyrolytic graphite sheets (PGSs) arranged to form an opening between respective proximal ends thereof and a weaved PGS. The weaved PGS includes a first section disposed above the first PGS, a second section disposed below the second PGS and a weaved section extending between respective proximal ends of the first and second sections and through the opening.

Abstract: A heat transfer system comprises a solid-liquid phase change material (PCM) encapsulated in a plurality of capsules movable through a closed loop circuit by a transfer mechanism.

Abstract: A heat exchanger system, in particular a vacuum spray boiler, cools a hot fluid by spraying a coolant onto chambers carrying the hot fluid. This process may be performed in i) a vacuum, as in space, ii) atmospheric pressure, as on a launch pad of a space vehicle, or iii) any pressure therebetween. The heat exchanger system may incorporate a plate-fin heat exchanger. A coolant spray apparatus, used for spraying the coolant, and the heat exchanger are integrated within a vacuum chamber. The coolant, subsequent to changing to a vapor state after being sprayed onto the heat exchanger, may be exhausted to outside the system.

Abstract: The double-tube heat exchanger has an outer tube and an inner tube inserted into the outer tube, is provided with an inside channel within the inner tube and an outside channel between the inner tube and the outer tube, and is configured to exchange heat between the fluid flowing in the inside channel and the fluid flowing in the outside channel. The inner tube has an uneven portion having unevenness on the outer peripheral surface. A large-diameter sealing portion is interposed between one axial end of the outer tube and the inner tube. A small-diameter sealing portion, which has a smaller diameter than the large-diameter sealing portion, is interposed between the other axial end of the outer tube and the inner tube. The outside channel and the uneven portion are arranged using the difference in axial position and diameter between the large-diameter sealing portion and the small-diameter sealing portion.

Abstract: The invention relates to an evaporator-condenser-type heat exchanger comprising a plurality of zones, each zone comprising at least one extractor means configured to channel at least a portion of the primary vapor generated in said zone towards the outside of the heat exchanger. The heat exchanger includes a plurality of sub-assemblies consisting in part of a layer of a thermally conductive material.

Abstract: An electric arrangement comprising a casing; a heat generating electric component arranged inside the casing; and a heat exchanger comprising a three dimensional lattice cell structure, the three dimensional lattice cell structure being arranged to conduct a dielectric cooling fluid from the casing at an exterior side of the casing for heat exchange with an ambient fluid, and back towards the casing for cooling of the electric component. A panel for a heat exchanger and a heat exchanger comprising a plurality of panels are also provided.

Abstract: A heat exchanger for transferring heat between a hot working fluid and a coolant according to the disclosure includes a shell, a core, and an expansion joint. The shell is arranged around an axis and receives a coolant therein. The core is located within the shell and directs a hot working fluid therethrough.

Abstract: A wound heat exchanger, comprising a shell, a bundle of tubes arranged inside the shell and through which a medium can flow, a first annular channel arranged inside the shell and runs around it for separating a liquid phase of a refrigerant from a gaseous phase of the refrigerant, a second annular channel arranged inside the shell and runs around it and is intended for evenly distributing the liquid phase over the bundle of tubes in order to exchange the heat between the refrigerant and the medium, and a connecting channel which establishes a fluid connection between the first annular channel and the second annular channel in order to conduct the liquid phase out of the first annular channel into the second annular channel, wherein the first annular channel and the second annular channel are spaced apart.

Abstract: A coolant coupling device wherein the cooler includes a cavity wherein the coolant trajectory is altered by an angle of greater than 75 degrees and which is defined by a wall structure incorporating two radii.

Abstract: The invention provides methods, devices, and systems for applications requiring control of heat transfer, such as thermal management of electronic device, cooling, heating, and energy storage. The invention provides a method of controlling the flow of heat by providing a device including a spin crossover material having a low spin state and a high spin state, where the low spin state has higher thermal conductivity than the high spin state, and where the spin crossover material undergoes spin crossover between the low and high spin states in response to a stimulus.

Abstract: A heat storage system, and systems and methods for designing a heat exchanger system included in the heat storage system are disclosed. The heat exchanger system includes a heat exchanger including a plurality of planar fins parallelly arranged between a first header and a second header, and a plurality of tubes configured to be received in axially aligned holes of the plurality of fins, the plurality of tubes being configured to allow flow of a fluid exchanger fluid. The heat storage system also includes a storage tank comprising phase change material (PCM) for at least partially submerging the heat exchanger within the PCM. A spacing between the plurality of fins is optimized using a finite particle model of the heat exchanger to achieve a performance objective of at least 75% thermal heat discharge from the PCM in about 3 hours.

Abstract: The present application provides a heat dissipation system and method for electronic devices. The system includes a heat dissipation unit attached to electronic component of an electronic device, a temperature and humidity sensor, a cooling unit and a controller. The controller is configured to obtain the dew point temperature of the space in which the cooling unit is disposed and to determine a coolant flow rate based on the dew point and the coolant temperature. In the event where the difference between the coolant temperature and the dew point is greater than a threshold, the heat dissipation unit receives the coolant under a first flow rate. In the event where the difference between the coolant temperature and the dew point is equal to or less than the threshold, the heat dissipation unit receives the coolant under a second flow rate lower than the first flow rate.

Abstract: A temperature-responsive hydrophilic-hydrophobic conversion surface has a surface property that is hydrophobic at a low temperature and is converted to be hydrophilic when the temperature rises. Accordingly, by applying the conversion surface to the fins of a heat exchanger, frost formation can be delayed in a low temperature environment due to the hydrophobicity, and remaining meltwater can be easily dried due to the conversion of the surface from hydrophobic to hydrophilic when the temperature is raised for defrosting. Therefore, the surface property of the fins of a heat exchanger is automatically converted according to the temperature and exhibits only favorable advantages at respective temperatures, so that heat transfer performance and power efficiency of the heat exchange can be effectively improved.

Abstract: Provided is a three-channel heat sink based on a tri-continuous mesoporous silica structure. including multiple three-channel porous units stacked on one another. Each of the three-channel porous units includes three channels which do not communicate with one another, each of the channels includes at least one flow path. Each of the three-channel porous units includes five flow paths, the five flow paths are arranged in two layers in a vertical direction. When viewed in the vertical direction, four of the five flow paths are enclosed to form a parallelogram pattern, and the fifth flow path is located at a diagonal position of the parallelogram pattern to independently form a third channel. A body formed by the plurality of three-channel porous units stacked on one another is internally provided with three medium flow paths which intersect, contact and do not communicate with one another.

Abstract: A heat exchanger comprising packages (A, B) which comprise turbulising elements (1) which turbulise a flow of a working fluid between the two walls (2, 2?) inside the packages (A, B). Packages (A, B) are set together alternately to accommodate the working fluid flowing through them. Packages (A, B) are connected to each other via pass-through connectors (6) which are fitted, respectively, in the inlet openings (4, 5) and outlet openings (4?, 5?) for the working fluids. The connector (6) comprises an external portion (6a) and an internal portion (6b) which are connected to each other with a transverse wall (6c). The internal portion (6b) of the connector (6) is connected to the walls (2, 2?) of the respective package (A, B) and closes the corresponding inlet/outlet opening (4, 4?, 5, 5?), while the external portion (6a) of the connector (6) is connected to the neighbouring walls (2, 2?) of the neighbouring packages (A, B) and connects the neighbouring areas of flow of the same working fluid.

Abstract: Provided is a method for improving efficiency of heat transmission that enables improving the efficiency of heat transmission by steam in a steam system at a pH of less than 7. A method for improving the efficiency of heat transmission by steam, wherein, in a step of introducing steam into a heat exchanger to heat an object to be heated or a step of contacting the steam with a cooling body to liquefy the steam, a sarcosine compound is allowed to be present in the steam system at a pH of less than 7. As the sarcosine compound, a long-chain sarcosine compound represented by the following formula (I) is preferable. R1C(?O)—N(CH3)—(CH2)n—COOR2 . . . (I) In formula (I), R1 is an unsaturated or saturated linear or branched hydrocarbon group having 7 to 24 carbon atoms, n is an integer of 0 to 2, and R2 is a hydrogen atom or a salt-forming group.

Abstract: A plate heat exchanger, in particular for an aircraft turbo machine, between a first fluid and a second fluid, the first fluid being intended to circulate in a first direction and the second fluid being intended to circulate in a second direction different from the first direction, the heat exchanger having stacked stages for circulation of the first fluid, and profiled elements at the inlet and outlet of the stages, the profiled elements having a sawtooth-shaped cross-section and defining channels converging at the inlet of the stages and diverging at the outlet of the stages.