Abstract: Disclosed is a liquefied natural gas storage apparatus. The apparatus includes a heat insulated tank and liquefied natural gas contained in the tank. The tank has heat insulation sufficient to maintain liquefied natural gas therein such that most of the liquefied natural gas stays in liquid. The contained liquefied natural gas has a vapor pressure from about 0.3 bar to about 2 bar. The apparatus further includes a safety valve configured to release a part of liquefied natural gas contained in the tank when a vapor pressure of liquefied natural gas within the tank becomes higher than a cut-off pressure. The cut-off pressure is from about 0.3 bar to about 2 bar.

Abstract: Provided is a heat storage and dissipation apparatus capable of direct heat exchange with a heat storage body. A heat storage and dissipation apparatus (100) comprises: a heat storage body (10) that reacts with a component contained in a primary gas (G1); and a heat storage body housing portion (20) that houses the heat storage body (10), wherein the heat storage body housing portion (20) has: a housing space (S1) that houses the heat storage body (10); a first flow opening (20a) that communicates with the housing space (S1) and is capable of flowing the primary gas (S1); and a second flow opening (20b) that communicates with the housing space (S1) and is capable of flowing the primary gas (S1).

Abstract: A heat exchanger includes a plurality of cooling plates, a duct plate disposed around the cooling plates and a spacer plate fixed to both the duct plate and the cooling plate to prevent supercharged air from flowing into a gap between the duct plate and the cooling plate. The cooling plate includes cup portions allowing cooling water flow paths of the corresponding two cooling plates to be in communication with each other when the cooling plate is fixed to the adjacent cooling plate. The cooling water flow path formed in the cooling plate includes flow path portions and formed extending in a direction perpendicular to a flow direction of supercharged air from the corresponding cup portions. The cup portions are each formed in a tubular shape having a central axis at a position offset along the flow direction of the supercharged air from a center of the corresponding one of the flow path portions in a flow path width direction.

Abstract: A method for controlling flow in a heating, ventilation, and air conditioning (HVAC) system includes adjusting a setpoint associated with a valve based on a temperature change across a heating or cooling coil to reduce energy waste. The method includes receiving a first temperature measurement associated with an inlet of the coil, receiving a second temperature measurement associated with an outlet of the coil, calculating a difference between the first temperature measurement and the second temperature measurement, determining that the difference between the first temperature measurement and the second temperature measurement is below a threshold, and adjusting a setpoint associated with the valve. Additional control features may be provided to improve system behavior such as a pulse generation feature, a change-limiting feature, and a reevaluation feature.

Abstract: A heat exchanger includes a body defining a flow channel, and a pin extending across the flow channel, the pin including an at least partially non-cylindrical shape. The pin can be a double helix pin including two spiral branches defining a double helix shape. The two branches can include a uniform winding radius. The two branches include a non-uniform winding radius. The non-uniform winding radius can include a base radius and a midpoint radius, wherein the midpoint radius is smaller than the base radius. The two branches can be joined together by one or more cross-members.

Abstract: Systems and methods that utilize enhanced boiling surfaces to promote the efficiency of boiling. Such a system has a surface that is hydrophobic and exhibits a sufficiently low receding contact angle to a liquid such that vapor spreading during bubble growth and premature transition to film boiling is mitigated.

Abstract: A heat exchange device includes a housing having an opening on one side, and a heat exchange core body. The heat exchange device also includes a connection block provided with a first channel, a second channel, a first interface, and a second interface. The connection block is also provided with a first socket of the first channel, and a first socket of the second channel. The heat exchange core body includes at least one flat tube. At least one part of one end of the flat tube extends into the first socket of the first channel and is mounted in a sealed manner with the first socket of the first channel, and at least one part of the other end of the flat tube extends into the first socket of the second channel and is mounted in a sealed manner with the first socket of the second channel.

Abstract: The present invention relates to an assembled material tube of hot and cold foods supplying machine, including a plurality of material tube bodies, in which penetrating feed channels are provided internally; each of the material tube bodies has a cooling channel provided with an inlet and an outlet to respectively and correspondingly input and output a working fluid through the cooling channel for performing thermal exchanges, whereby cooling occurs in segmentations for each of the feed channels; a plurality of temperature measurement units each of which is provided with a detecting end for detecting a temperature in the corresponding feed channel; and a plurality of heating units perform heating in segmentations for each of the feed channels. Accordingly, said machine can be separately used as hot food supplying machine or cold food supplying machine, so as to achieve the aim of using one machine for two purposes.

Abstract: A heat exchanger cleaning arrangement includes a spray tube array configured to be attached to a heat exchanger. The spray tube array includes at least one tube, a plurality of nozzles, and a connector. The plurality of nozzles is configured to port pressurized fluid from the at least one tube toward the heat exchanger. The connector is in operable communication with the spray bar array and is configured such that a pressurized fluid source can be attached to the connector for porting fluid from the pressurized fluid source to the plurality of nozzles.

Abstract: A structure of a drawn cup-type heat exchanger of improved pressure tightness is provided. A drawn cup-type heat exchanger is configured by stacking in plural number a long and thin tube element containing an inner fin inside a pair of cup plates. The cup plates have a flat containing portion containing the inner fin and a pair of cup portions communicating with both end portions of the containing portion; a circulation hole for communicating fluid into each of tube elements to be stacked is formed in the cup portions; and, to position both end portions in a longitudinal direction of the inner fin to be contained in front of the circulation hole of the cup portions, a corner portion is formed at at least one end portion in a width direction at both extremities in a longitudinal direction of the containing portion.

Abstract: According to various embodiments, there is provided a heat sink including: a heat conducting surface; a plurality of nozzle arrays arranged such that output ends of nozzles of the plurality of nozzle arrays face the heat conducting surface; and a plurality of fins configured to at least partially surround a respective portion of the heat conducting surface facing a respective nozzle array of the plurality of nozzle arrays.

Abstract: A heat exchanger assembly includes a frame; first and second heat exchanger panels configured for exchanging heat with air pulled into the heat exchanger assembly and disposed in a V-configuration; a fan for pulling air into an enclosed space of the heat exchanger assembly; a plurality of lateral enclosing panels and at least one middle enclosing panel. The at least one middle enclosing panel extends perpendicular to the lateral enclosing panels and is disposed between the heat exchanger panels. A U-shaped lower end of the at least one middle enclosing panel includes first and second wall portions opposite one another. The lower ends of the heat exchanger panels abut the wall portions such that the wall portions are deflected relative to one another by forces exerted thereon by the lower ends causing a first and second seals to form between the wall portions and the heat exchanger panels.

Abstract: Disclosed is a heat transfer assembly for a rotary regenerative preheater. The heat transfer assembly includes a plurality of heat transfer elements stacked in spaced relationship to each other in a manner such that each notch from a plurality of notches of one of the heat transfer element rests on respective flat sections from a plurality of flat sections of the adjacent heat transfer elements to configure a plurality of closed channels, each isolated from the other, wherein each of the channels has a configuration in a manner such that each of corrugation sections from a plurality of corrugation sections of one of the heat transfer elements faces respective undulation sections from a plurality of undulation sections of the adjacent heat transfer elements.

Abstract: To provide a heat-dissipating sheet having good close-contact properties with an adherend such as a heat-generating body and being easy to handle. A heat-dissipating sheet includes a heat-dissipating member including a graphite sheet, a first thermally conductive layer, and a second thermally conductive layer stacked in this order. The first thermally conductive layer contains a thermally conductive filler dispersed in a polymer matrix and has an outer shape larger than the graphite sheet when viewed in plan. The second thermally conductive layer contains a thermally conductive filler dispersed in a polymer matrix, is more flexible than the first thermally conductive layer, and has an outer shape identical to or smaller than the first thermally conductive layer when viewed in plan.

Abstract: In a featured embodiment, a heat exchanger includes a plate including a plate portion having outer walls. A plurality of internal passages extend between end portions. A ratio between an outer wall cross-sectional thickness at one of the end portions and a cross-sectional wall thickness of the outer wall within the plate portion is greater than 2.5 and no more than 10. An inlet manifold is attached to the inlet end. An outlet manifold is attached to the outlet end.

Abstract: A regenerative heat exchanger includes a refrigerant pipe, a regenerator, and an air passage fin. The air passage fin is disposed in an air passage defined outside of the refrigerant pipe and the regenerator, and is thermally connected with the regenerator directly or through the refrigerant pipe. At least one of the regenerator and the air passage fin is configured such that a thermal resistance between a part of a regenerative material located on an upstream side and air flowing through the air passage becomes larger than a thermal resistance between a part of the regenerative material located on a downstream side and air flowing through the air passage.

Abstract: A plate heat exchanger includes a plurality of plates stacked so that a liquid flow passage is formed on the inside thereof, and a gas flow passage through which heating gas passes, the gas flow passage being formed between the plurality of plates and including a gas inflow opening portion and a gas outflow opening portion positioned on an opposite side to the gas inflow opening portion, wherein the gas outflow opening portion has a smaller opening area than the gas inflow opening portion. Thus, when the heating gas passes through the gas flow passage, even if the volumetric flow thereof decreases due to a reduction in temperature or condensation, a reduction in the flow velocity of the heating gas can be suppressed. Hence, a reduction in a heat transfer coefficient can be suppressed, leading to an improvement in heat transfer efficiency, and as a result, reductions in overall size, weight, and manufacturing cost can be achieved appropriately.

Abstract: The double tube for heat exchange includes: a spiral pipe having ridges and valleys alternately formed on a circumferential surface along a spiral track thereof and guiding a first fluid therethrough; an outer pipe receiving the spiral pipe axially inserted thereinto and guiding a second fluid along the circumferential surface such that the second fluid exchanges heat with the first fluid; a resistance member protruding from the spiral pipe or valleys to increase time of the second fluid in the valleys and to support the ridges adjacent thereto. Unlike typical double tubes, this double tube can: improve heat exchange efficiency by virtue of the spiral pipe; improve flow directionality of the second fluid; reduce noise through expansion of a space between an end joint of the outer and inner pipe to reduce the pressure of the second fluid; and improve efficiency through resistance members protruding from the valleys.

Abstract: The invention relates to a gas-liquid heat exchanger comprising a first liquid distributor, a second liquid distributor and heat exchange assemblies connecting the first liquid distributor and the second liquid distributor. A flow equalizer plate and a liquid guiding plate are arranged on the first liquid distributor to equalize the incoming liquid. On the heat exchange assemblies are arranged longitudinally-finned tubes, which are evenly distributed in an array. The fins on two adjacent longitudinally-finned tubes are arranged in an alternating manner to achieve heat exchange assemblies providing small wind resistance, large heat transfer surface area and long heat transfer stroke. Therefore, the heat exchanger has uniform liquid distribution, small wind resistance, large heat transfer surface area, long heat transfer stroke, gas-liquid counter-flow arrangement and high heat transfer efficiency.

Abstract: A heat insulating structure body comprising: a container which includes a first plate-like body, a second plate-like body facing the first plate-like body, a partition plate for dividing a space between the first plate-like body and the second plate-like body, a first cavity part formed by the first plate-like body and the partition plate, and a second cavity part formed by the second plate-like body and the partition plate, wherein a wick structure body and a working fluid are sealed in the second cavity part.