Abstract: A cooling system for a wind tunnel is disclosed. The heat exchanger of the present disclosure is formed as a turning vane in an airflow duct of a re-circulating wind tunnels. The individual vanes are formed from extruded aluminum with coolant fluid channels running continually down the length of the vane. One or more channels can be used, depending on the application of vane and the cooling capacity needed. The exterior of the vanes are formed in an airfoil shape to efficiently turn the air flow the desired amount in a manner well known in the art. The turning vanes are connected to a fluid supply with single piece connectors that removably attach to the turning vanes. In the depicted embodiment the connectors are attached with screws. In the depicted embodiment the connectors are formed as a single piece in a two-piece injection mold.

Abstract: Disclosed is a shell-and-tube heat exchanger assembly, having: a first tubesheet configured for being secured to a shell of the shell-and-tube heat exchanger assembly, the first tubesheet including: a first section and a second section; the second section configured to be secured to a first shell end of the shell; and the first section including a plurality of holes configured to support a respective plurality of aluminum tubes extending through the shell, wherein the first section is configured to limit a galvanic response of the plurality of aluminum tubes when exposed to a chiller water.

Abstract: A dew point corrosion resistant heat exchanging system having a plurality of hollow heat transferring tubes through which cooler ambient air or hot combustion product gases flow. The other of the air or gas flows across the outer surfaces of the tubes, and heat is transferred from the hot gases to the ambient air, thus heating the air. A portion of the tubes includes an inner liner forming an air pocket chamber between the liner and the outer wall of the tube. The air pocket chamber provides heat transfer advantages that maintain the tubes at a temperature above the dew point of the gases in the system, thus inhibiting corrosion of the tubes.

Abstract: The disclosure relates to a heat exchange compound module and a manufacturing method for a heat exchange compound module. The heat exchange compound module comprises a metal-ceramic substrate and a heat exchange structure. The metal-ceramic substrate comprises an outer layer of a first metallic material. The heat exchange structure is made of a second metallic material and is connected to the outer layer of the metal-ceramic substrate only by an eutectic bond between the first metallic material and the second metallic material.

Abstract: Disclosed is a system for receiving condensate from a v-coil heat exchanger (v-coil), having: a receptor that has: a first channel having a first length defined between first opposing ends, the first channel configured to receive the v-coil, the first channel having a first bottom surface; a second channel disposed at an angle to the first channel and connecting with the first channel at a junction so that fluid flows downstream from the first channel into the second channel, the second channel having a second bottom surface that extends below the first bottom surface; and a heat shield connected to the first channel and extending below the first channel.

Abstract: A heat exchange array arranged to be used in a heat exchange unit and further arranged to recover energy from an exhaust gas, comprising: a first heat exchange tube and a second heat exchange tube, each arranged to carry a heat exchange medium and further each comprising a series of external fins; and wherein the first heat exchange tube comprises a left-handed helically coiled tube having an first elastic stress, and the second heat exchange coil comprises a right-handed helically coiled tube having a second elastic stress, and wherein the first and second heat exchange tubes are interconnected such that the first elastic stress opposes the second elastic stress.

Abstract: A method by a controller of a cooling system includes calculating a difference between a first temperature of ambient air and a second temperature of pre-cooled air. The pre-cooled air is ambient air that has been cooled by water from a water distribution system before it enters one or more condenser coils. The method further includes determining that the difference between the first and second temperatures is less than or equal to a predetermined temperature difference, and in response, determining that the first temperature is greater than or equal to a minimum temperature. The method further includes, if the first temperature is greater than or equal to the minimum temperature, instructing the water distribution system to distribute the water to pre-cool the ambient air for a predetermined length of time and to disable the distribution of the water after the predetermined amount of time has elapsed.

Abstract: A geoexchange system is provided which includes a ground source heat exchanger positioned in the ground and a distribution system coupled to the ground source heat exchanger to circulate water through the ground source heat exchanger during operation. The distribution system may include a supply line, a return line and a circulation pump to circulate water through the internal fluid cavity of the ground source heat exchanger via the supply and return lines. The distribution system may further include a purge valve to release gas from the distribution system and a fill circuit that is configured to automatically replenish the internal fluid cavity of the ground source heat exchanger with water upon leakage of water from the ground source heat exchanger or conversion of water from the ground source heat exchanger to gas. Other geoexchange systems and related methods are also provided.

Abstract: A heat exchanger includes a flow channel operatively connecting a channel inlet to a channel outlet to channel fluid to flow therethrough. The flow channel is defined at least partially by a shape change material. The shape change material changes the shape of the flow channel based on the temperature of the shape change material.

Abstract: A heat conduction device with an inner loop includes a vapor chamber having at least one hole edge and a heat pipe having an outer pipe and an inner pipe. The outer pipe has a closed end and an open end communicating with the hole edge. Two ends of the inner pipe are open. The inner pipe has one end communicating with the vapor chamber through the hole edge and the other end extended along the axial direction of the outer pipe to form at least one port for communicating the closed end of the outer pipe with the inner pipe. The inner pipe is located inside the outer pipe to form a gap annularly. The port communicates with the gap, so that the inner loop is formed between the vapor chamber and the heat pipe.

Abstract: A hetero-material floating heat pipe structure includes a main body and a multi-segment floating adjustment unit. The main body has a front end, a rear end and a flexible section disposed between the front end and the rear end. The flexible section has flexibility, whereby the main body is flexible. The multi-segment floating adjustment unit is disposed on an outer surface of the flexible section for restricting and protecting the flexible section. The multi-segment floating adjustment unit includes multiple adjustment members, which are pivotally connected with each other and stringed to form the multi-segment floating adjustment unit. Each of two ends of each adjustment member has a pivoted section. By means of the pivoted sections, the adjustment members are pivotally connected with each other and can be swung and bent by the same angle or by different angles to adjust the arrangement of the multi-segment floating adjustment unit.

Abstract: A vapor chamber structure includes a main body formed of a metal plate and a ceramic plate. The metal plate and the ceramic plate are closed to each other to define a chamber therebetween; and the chamber is internally provided with a wick structure, a support structure, and a working fluid. The metal plate and the ceramic plate are connected to each other via welding or a direct bonding copper process, and the support structure is connected to between the metal plate and the ceramic plate also via welding or the direct bonding copper process. By contacting the ceramic plate of the vapor chamber with a heat source packaged in a ceramic material to transfer heat, the problem of crack at an interface between the vapor chamber and the heat source due to thermal fatigue can be overcome.

Abstract: A compact heat exchanger is provided, in which multiple streams can flow within the same layer or layers, and different fluids may flow in alternating channels within the same layer as well as flowing in alternating layers. Having fluids in alternating channels—as compared to only alternating layers within the same layer—increases the direct surface area between the fluids (the primary surface area) for heat transfer, thereby increasing the rate and efficiency of heat transfer. Methods of making and using the heat exchanger are also provided.

Abstract: Disclosed herein are various embodiments of systems for drilling and operating a well which may have dual uses. The well may be drilled and operated as a geothermal well using a hybrid approach where a heat transfer fluid is injected into a hot rock formation but is not removed, and heat is extracted using a closed loop method. The geothermal well is then evaluated for use as a carbon dioxide sequestration well. In other embodiments, the well is drilled as a carbon dioxide sequestration well and then evaluated for its potential for generating geothermal energy using a hybrid approach where supercritical carbon dioxide is injected into a hot rock formation but is not removed, and heat is extracted using a closed loop method. Both horizontal and vertical wells are disclosed, in sedimentary rocks and in basement granite.

Abstract: Several innovative technologies, including pressure-drop minimization, advanced refractory high entropy alloys, and advanced manufacturing can provide a compact heat exchanger that extends the state-of-the-art heat-exchanger operating range. The compact heat exchanger can reduce pressure drop losses by 100 to 500%, while retaining most of the heat transfer. The compact heat exchanger can be fabricated from refractory high entropy alloys that have favorable corrosion, thermal fatigue, and creep properties at high temperatures and pressures. Therefore, the compact heat exchanger using high entropy alloys can operate at >800° C. and 80 bars.

Abstract: A heat exchanger for receiving an airflow having an uneven intensity distribution across the heat exchanger and for flowing refrigerant within the heat exchanger. The heat exchanger includes sections of microchannel tubes for flowing refrigerant through at least one pass through the heat exchanger, wherein the sections are configured according to the airflow across the heat exchanger. The heat exchanger may be used in an HVAC system. A method may also be performed to manufacture the heat exchanger.

Abstract: A new heat exchange tube fin design in which a plurality of arrowhead shapes are pressed into or embossed onto each fin, the arrowhead shape defined by two intersecting wedge sections. The pressed arrowhead shapes are grouped into nested pairs, and one of the arrowheads in a pair is pressed as a positive relative to the fin plane and the other of the pair is pressed as a negative relative to the fin plane. The arrowhead pairs are placed in rows parallel to the air flow direction and arrowhead pairs in one row are preferably staggered relative to the arrowhead pairs in the adjacent row along the fin in the air flow direction.

Abstract: Disclosed is a microchannel heat exchanger comprising a primary core including a first header and a second header and a secondary core including a first auxiliary header and a second auxiliary header, further comprising a first header interconnect extending between the first header and the first auxiliary header and having a first interconnect fluid passage extending therethrough; and a second header interconnect extending between the second auxiliary header and the second header and having a second interconnect fluid passage extending therethrough.

Abstract: A distributor for use in a heat exchanger including a distributor body having a first end, a second end, and a hollow interior. A fluid inlet is formed at the first end and a fluid outlet includes a plurality of orifices formed in the distributor body. The fluid outlet is configured to achieve a ratio of a pressure drop across the distributor to a pressure drop across the heat exchanger between about 3 and about 7 at nominal refrigerant flowrate conditions.

Abstract: A heat dissipation device includes a body including a first metal sheet and a second metal sheet coupled to the first metal sheet. The first metal sheet at least partially defines a first channel including a first plurality of curves, a second channel including a second plurality of curves, and an interconnecting channel fluidly coupled to the first channel and the second channel. The first channel and the interconnecting channel at least partially surround the second channel, a unit volume of the first channel is a same as a unit volume of the interconnecting channel, and the unit volumes of the first channel and the interconnecting channel are different from a unit volume of the second channel.