Abstract: A liquid-gas heat exchanger for use in a heat exchange system using solar energy has an insulated chamber adapted to allow hot air to pass therethrough. A coil member extends through the insulated chamber and is adapted to allow a heat transfer liquid to pass into and then out of the insulated chamber. The spacing between the windings of the coil are predefined and the coil is in a predetermined position inside the insulated chamber, so as to force the air to pass in between the coil windings and increase the air contact with the coil and provide a large heat exchange. Several baffle members are placed each side of the coil member and an interior area of the insulated chamber and force air to circulate multiple times through the coil member, thereby allowing for an efficient exchange from the hot air to the heat transfer liquid.

Abstract: Systems and methods for providing hot water to a commercial dishwasher are provided. A first heat exchanger is provided in a first enclosure, and is used to heat water from a cold water source. The heated water is provided to the commercial dishwasher for use. A second heat exchanger is provided in a second enclosure, and is used to collect waste heat from the wastewater of the commercial dishwasher. A refrigerant coil loop passes through the first heat exchanger and the second heat exchanger, and allows for the use of the waste heat. The first heat exchanger is a condenser provided within a condenser chamber, the condenser connected to a compressor. The second heat exchanger is an evaporator within an evaporator chamber, the evaporator connected to an expansion valve.

Abstract: A fluid mixing system includes a container bounding a compartment and extending between a first end and an opposing second end. An elongated first drive line and second drive line are disposed within the compartment of the container and are rotatable therein. At least one tie extends between the first drive line and the second drive line so as to maintain at least a portion of the first drive line and the second drive line at lateral spaced apart positions within the compartment. An impeller or other mixing element can be coupled to the drive lines.

Abstract: The present invention relates to a method of recovering an absorption solvent in a butadiene production process through oxidative dehydrogenation, the method including: a) transferring a light gas discharged from an upper portion of an absorption tower to a wash column; and b) recovering the absorption solvent included in the light gas by a solvent circulating in the wash column. Since an absorption solvent may be prevented from being introduced into a reactor, or being discharged to an outside of a system, economic efficiency of a butadiene production process is improved.

Abstract: An auger-type poultry chiller having an auger with multiple long-pitch auger blades. The blades of the auger create pockets that spiral around the auger shaft and extend the length of the auger. While the product in the chiller is locked into a certain pocket, it is not locked into a certain spot lengthwise in the chiller. The product, therefore, is able to distribute evenly along the length of the chiller within its pocket even if there are gaps in loading time or if unloading stops momentarily.

Abstract: A rocker-type poultry chiller, including a tank for receiving poultry carcasses and holding chilled water, an axle mounted in the tank, a main paddle connected to the axle, and a side paddle connected to the axle. The oscillation of the main paddle and the side paddle urges the carcasses upwardly and laterally, which contributes to the cooling of the carcasses as a result of their thorough contact in the chilled water. The movement of the paddles also gently massages the carcasses by gently bumping them against the paddle blades and the wall of the tank. The repeated compression of the carcasses tends to tenderize the meat. The side paddles ensure more predictable and consistent contact between the paddles and all of the carcasses, which causes more agitation of the carcasses and more effective washing of the carcasses.

Abstract: The present invention provides a heat exchanger with inner fluid to actuate the external fluid pump capable of driving one or more than one of fluid actuation devices through fluids passing through the heat exchanger having thermal-energy fluid pipe, without utilizing external mechanical rotational kinetic energy or power of electric motors; respectively driving external fluid pumping blade devices installed at lateral sides of the heat exchanger having thermal-energy fluid pipe with a direct or non-contact transmission means, so as to drive the external fluid to pass through the heat exchanger for increasing the heat exchange efficiency of the heat exchanger.

Abstract: A heat dissipating device includes a chamber with an evaporation portion and a condensation portion, the chamber including a refrigerant. The chamber further includes an evaporation portion scraping brush provided corresponding to the evaporation portion, the evaporation portion scraping brush being able to sweep relative to an inner surface of the evaporation portion. A refrigerant liquid film is formed on the inner surface of the evaporation portion. Since the fluid refrigerant is uniformly applied to an inner surface of the evaporation portion to form a liquid film, the heat dissipating ability of the heat pipe heat dissipating device is improved, and the heat dissipating uniformity of the heat pipe heat dissipating device is enhanced. A heat dissipating method is also provided.

Abstract: An auger-type poultry chiller having an auger with multiple long-pitch auger blades. The blades of the auger create pockets that spiral around the auger shaft and extend the length of the auger. While the product in the chiller is locked into a certain pocket, it is not locked into a certain spot lengthwise in the chiller. The product, therefore, is able to distribute evenly along the length of the chiller within its pocket even if there are gaps in loading time or if unloading stops momentarily.

Abstract: In a hollow cylindrical housing which stores a coolant, a feeding device having a rotating shaft and spiral screw vanes fixedly installed on the periphery of the rotating shaft is provided. At least one first diffusion nozzle is provided in each pitch of the screw vanes on the inner wall of the housing. A pair of second diffusion nozzles are provided for every pitch of the screw vanes on the outer periphery of the rotating shaft respectively at different positions in the axial direction of the rotating shaft and at mutually opposite positions in the circumferential direction of the rotating shaft. The first diffusion nozzles are supplied with wash water through a high-temperature water piping provided on the upper outside of the housing, while the second diffusion nozzles are supplied with wash water through a channel formed in the interior of the rotating shaft.

Abstract: A device and method for enhancing the flow of coolant through an EGR cooler, are described. The device includes a housing or tank having an interior space with a fluid inlet for receiving coolant and a fluid outlet for releasing coolant from the interior space. A series of angled baffles in a parallel arrangement are positioned within the interior of the housing from the fluid inlet to the fluid outlet. The baffles extend into a flow path of the coolant redirecting a portion of the flow path above and below the baffles as the coolant passes through the housing. A plurality of tubes or conduit are positioned adjacent the baffles, defining an exhaust gas flow pathway through the housing.

Abstract: A heat pipe heat dissipating device includes a chamber; a rotary shaft positioned within the chamber; an isolating member affixed to the rotary shaft; and a nozzle provided on the isolating member, wherein the nozzle directs the flow of a refrigerant vapor and prompts the rotary shaft and the isolating member to rotate. The heat pipe heat dissipating device can operate with a self-driving operation. A heat pipe heat dissipating method is also provided.

Abstract: A heat transferring apparatus may employ a heat exchanger with a fluid inlet and a fluid outlet and be coupled to a power exchange unit, which employs a driving fan fluid inlet, a series of inner fan blades to receive the fluid from the driving fan fluid inlet, and a rotable driving fan unit. The inner fan blades are attached to the rotable driving fan unit along with driving magnets. A rotatable driven fan unit has numerous outer fan blades and a series of imbedded driven magnets. The fluid drives the inner fan blades and flows into the heat exchanger. The outer fan blades force air through the heat exchanger and cools the fluid. A power transfer wall located between the inner magnets and the outer magnets transfers magnetic fields from the inner magnets to the outer magnets to impart rotation in the driven fan unit and outer fan blades.

Abstract: A method and apparatus for regulating the temperature of the cavitation medium for a cavitation chamber is provided. A heat exchange fluid is pumped through a heat exchange conduit that passes through a portion of the cavitation chamber. An external heat exchanger, couples either directly or indirectly to the heat exchange conduit, regulates the temperature of the heat exchanger fluid which, in turn, regulates the temperature of cavitation medium within the cavitation chamber. The heat exchanger can be used to lower the temperature of the cavitation medium to a temperature less than the ambient temperature; to withdraw excess heat from the cavitation medium; or to heat the cavitation medium to the desired operating temperature. The heat exchanger can utilize heated heat exchange fluid, cooled heat exchange fluid, thermoelectric coolers, heat sinks, refrigeration systems or heaters.

Abstract: A cooling tower system, including a principal cooling tower; an auxiliary cooling tower for receiving a portion of the warm water flow into the main tower; a central shaft mounted vertically in the auxiliary tower; a turbine mounted on a portion of the shaft; a cooling blade mounted on the upper end of the shaft; a water jetting system delivering warm water under pressure from the main cooling tower into the auxiliary cooling tower to impart rotation to the turbine blades for imparting rotation to the cooling blade; a quantity of high efficiency film fill in that portion of the tower below the turbine for receiving the water coming off of the turbine blades; air flow produced by rotation of the cooling blade upward through the fill in order to cool the water before it is returned to the main cooling tower.

Abstract: A heat exchanger and associated method are provided that may eliminate or reduce the need for an external mechanical or electrical power source to drive the fan by utilization, instead, of a Stirling engine. A heat exchanger includes a plurality of coils configured to carry a primary fluid. The heat exchanger also includes a fan including a plurality of fan blades configured to force a secondary fluid across the plurality of coils to facilitate heat transfer between the primary and secondary fluids. The heat exchanger also includes a Stirling engine operably connected to the fan and configured to cause rotation of the fan blades. A corresponding method is also provided.

Abstract: The invention relates to a device for reducing fouling in a tube (1) through which a fluid passes. The inventive device comprises a mobile rotary element (3) and a fixed bearing-forming element (2) which can be solidly connected to the upstream end of the tube (1). In addition, the mobile element (3), which is connected to the fixed element (2), comprises an upstream trunnion-forming part (4) and a downstream turbulence-generating part (5) which is shaped such as to be rotated by the flow of the fluid in the tube (1). The aforementioned upstream (4) and downstream (5) parts are connected to one another by means of an elongated flexible connector (6) that is deformable along the entire length thereof.

Abstract: The invention provides high-efficiency heat transfer devices and apparatuses In one embodiment, the invention includes a vessel capable of containing the heat transfer medium, a conduit extending through a wall of the vessel, the conduit having a first surface for contacting the heat transfer medium and a second surface for contacting a fluid within the conduit, a helical member residing around and along a length of the first surface of the conduit capable of angularly directing a flow of the heat transfer medium along the first surface of the conduit; and a plurality of fins helically arranged adjacent the helical member, each fin extending through a wall of the conduit and being capable of directing at least a portion of the heat transfer medium to an area within a radius of the conduit.

Abstract: In an HVAC system in which ambient air is supplied by the system to a building through an ambient air intake airstream and is exhausted from the building through an exhaust airstream energy is conserved by transferring heat between the intake airstream and the exhaust airstream. A heat exchange fluid is circulated between heat exchangers located in the intake airstream and in the exhaust airstream. An air turbine is placed in the exhaust airstream for being driven by the exhaust airstream, and the air turbine is coupled with a pump arranged to circulate the heat exchange fluid between the heat exchangers such that upon being driven by the exhaust airstream, the air turbine, in turn, drives the pump to circulate the heat exchange fluid between the heat exchangers and thereby effects the transfer of heat from one to the other of the intake airstream and the exhaust airstream and a concomitant conservation of energy in the HVAC system.

Abstract: A method of cooling at least one electronic device is described, wherein a movable pumping element (4) pumps a fluid to and/or from said device, and wherein the movement of said pumping element (4) is induced by heat. A system for cooling at least one electronic device is described, comprising at least one movable pumping element (4) for transporting a fluid to and/or from said device, wherein said pumping element (4) is movable by heat.

Abstract: A heat exchanging system of a ventilating device includes: a heat exchanging housing communicating with an outdoor air passage and an indoor air passage; a rotational shaft rotatably supported at one side of the case of a ventilating device; and a heat exchanging elements mounted at an outer circumferential surface of the rotational shaft at regular intervals, and performing a heat-exchanging operation of outdoor air and indoor air while being rotated by a wind force of outdoor air passing the outdoor air passage and a blow force of indoor air passing the indoor air passage. Thus, any additional driving unit is not necessary to rotate the heat exchanging system, so that a fabrication cost can be reduced, the overall size of the ventilating device can be reduced, and a noise and vibration can be reduced.

Abstract: A liquid cooling system utilizing minimal size and volume enclosures, air pockets, compressible objects, and flexible objects is provided to protect against expansion of water-based solutions when frozen. In such a system, pipes, pumps, and heat exchangers are designed to prevent cracking of their enclosures and chambers. Also described are methods of preventing cracking in a liquid cooling system. In all these cases, the system must be designed to tolerate expansion when water is frozen.

Abstract: Methods, systems, and devices are provided for cooling a heat source. One apparatus embodiment includes a housing, a fluid conduit, a pump within the housing and in communication with the fluid conduit for conveying fluid through the fluid conduit, and a turbine in communication with the fluid conduit to be driven by the fluid as it passes through the fluid conduit.

Abstract: A heat exchanging device includes a housing received in a container for allowing the fluid in the container to flow through the housing. A tube is extended through the housing. A driving device may pump the fluid in the container to flow through the housing and to have an increased heat exchange effect, within the housing, with the fluid in the tube, and may be driven by another driving device which may be actuated by the fluid flowing through the tube. A heater may be used to heat the fluid in the container and in the housing.

Abstract: A plate and fin type heat exchanger is disclosed which can be made in any convenient size with minimum tooling required. The heat exchanger is made from a plurality of stacked plate pairs having raised peripheral edge portions to define flow channels inside the plate pairs. The plates of the plate pairs are formed with offset, diverging end flanges that space the plate pairs apart. A U-shaped channel envelops the plate end flanges to form part of a manifold at each end of the plate pairs. End caps or plates close the open ends of the U-shaped channels to complete the manifolds, and inlet and outlet openings are formed in the manifolds as desired to complete the heat exchanger.

Abstract: A plate and fin type heat exchanger is disclosed which can be made in any convenient size with minimum tooling required. The heat exchanger is made from a plurality of stacked plate pairs having raised peripheral edge portions to define flow channels inside the plate pairs. The plates of the plate pairs are formed with offset, diverging end flanges that space the plate pairs apart. A U-shaped channel envelops the plate end flanges to form part of a manifold at each end of the plate pairs. End caps or plates close the open ends of the U-shaped channels to complete the manifolds, and inlet and outlet openings are formed in the manifolds as desired to complete the heat exchanger.

Abstract: A continuous flow heater has an elastic, flexible or rigid pipe (10) which is movably mounted and a heat source (6). When a liquid flowing through the pipe is heated in the pipe interior (1), undesired scale tends to be deposited on the interior of the pipe walls. To prevent or remove this deposit, the pipe (10) is moved and/or deformed by an internal overpressure or by application of external forces, causing the deposits to be detached from the pipe inner walls and carried away by the fluid flow. The overall pipe (10) can have an inner pipe (2), inner insulating layers (3-5), a filament (6) and external insulating layers (7-9).

Abstract: A heat exchanger comprising (a) a hollow, cylindrical roller mounted on its longitudinal axis for rotation about said axis; (b) a manifold positioned in the hollow interior of said roller, said manifold comprising (bi) a central pipe which extends axially along the longitudinal axis of said roller, (b2) a plurality of spoke pipes, wherein said spoke pipes are in communication with said central pipe and with the hollow interior of said roller; (c) a supply means for introducing a heat exchange fluid into said central pipe; and (d) a discharge means for removing said heat exchange fluid from the hollow interior of said roller, so that said heat exchange fluid is sequentially introduced to said central pipe, transferred through said central pipe and then through said spoke pipes, so as to exit said spoke pipes and collide against the inside surface of said roller, thereafter turbulently mixing with the entire mass of said heat exchange fluid contained within the substantially full roller, and thereafter withdraw

Abstract: A rotating heat exchanger (10) has a first air turbine (16) connected to a first end of an axle (20). The second end of the axle (20) is connected to a second air turbine (18). A heat pipe (30, 40, 42, 44) extends from the first air turbine (16) to the second air turbine (18).

Abstract: The cooling of a hot fluid is effected using a heat exchanger (11) adapted to receive the hot fluid and liquid coolant for cooling the hot fluid such that the liquid coolant is vaporized. A turbine (12), having an output shaft (19) connected to a fan (18), is responsive to vaporized coolant which expands in the turbine (12) for driving the fan (18) to move a mass of air, and produce vaporized coolant. A condenser (13) receives the expanded vaporized coolant and is responsive to air blown by the fan (18), for condensing the expanded vaporized coolant thereby cooling the same and producing coolant condensate which is then returned to the heat exchanger (11).

Abstract: A computer includes a flexible member or tube fabricated from thermally conductive carbon fibers for transferring heat from a first portion, such as a base section of a portable computer, to a second portion, such as the display section of a portable computer, where the sections of the computer move between an open operating position and a closed position. The flexible member, fabricated from conductive fibers, is positioned so as to experience torsion upon opening the portable computer. A first heat pipe is thermally connected with a microprocessor in the base section at one end and at the other end is coaxially attached within the member or tube. A second heat pipe is similarly coaxially attached to the other end of the member or tube.

Abstract: The cooling of a hot fluid is effected using a heat exchanger adapted to receive the hot fluid and liquid coolant for cooling the hot fluid such that the liquid coolant is vaporized. A turbine, having an output shaft connected to a fan, is responsive to vaporized coolant which expands in the turbine for driving the fan to move a mass of air, and produce vaporized coolant. A condenser receives the expanded vaporized coolant and is responsive to air blown by the fan, for condensing the expanded vaporized coolant thereby cooling the same and producing coolant condensate which is then returned to the heat exchanger.

Abstract: A new and improved portable, immersible heat exchanger apparatus is provided for immersion into a quantity of material that is to cooled or heated. The apparatus includes a continuous copper tube assembly which is comprised of a straight, horizontal handle portion, a helically coiled immersion portion, and a vertically oriented, hook-shaped hanger portion. The top end of the immersion portion is connected to the handle portion; and the bottom end of the immersion portion is connected to the hanger portion. In use, the immersion portion is immersed in the material that is to undergo heat exchange. Tap water from a faucet is passed through the tube assembly to serve as a medium for heat exchange. The water enters the tube assembly at the handle portion, runs through the handle portion, the immersion portion, and the hanger portion, and exits from the end of the hanger portion. A flexible hose connects the handle portion to the water faucet.

Abstract: An aftercooler through which a first fluid passes. A cooling fan applies a cooling fluid to the aftercooler. A variable speed motor is rotatably coupled to the cooling fan. A temperature sensor, in communication with the first fluid, is located downstream of the aftercooler. A controller controls operation of the variable speed motor based upon the temperature applied to the temperature sensor to prevent condensate freeze-up.

Abstract: A heat exchanger for efficient transfer of sensible heat between a highly viscous fluid and a secondary fluid. This exchanger has an annular passage formed between an inner cylinder and outer cylinder. The highly viscous fluid passes through the annular passage while the secondary fluid passes both inside the inner cylinder and outside of the outer cylinder making both cylinders heat transfer surfaces. A scraper mechanism rotates within the annular passage which scrapes both heat transfer surfaces. The scraper mechanism driven by the pressure exerted by the fluid to be cooled. This scraping action serves to both continually clean the surfaces and to enhance the heat transfer efficiency.

Abstract: An apparatus for deslagging a steam boiler includes a plurality of loop clusters of detonating cord, each including a plurality of loops arranged in a multi-directional pattern to impart a three-dimensional generally spheroid shaped to the cluster The clusters are supported in spaced apart relation between a pair of adjacent tubing panels and are interconnected by lengths of detonating cord to form an explosive assembly adapted for substantially simultaneous detonation. A plurality of explosive assemblies are arranged in approximately every third or fourth spread between tubing panels and are interconnected so as to pyrotechnically detonate each explosive assembly after a predetermined delay in response to detonation of another explosive assembly to which it is connected. The invention is further directed to the method of deslagging a steam boiler with the plurality of loop clusters of the invention.

Abstract: A heater/mixer device is disclosed for use with laboratory vials, test tubes, or similar containers containing liquids. The heater/mixer includes a chamber formed in a block of material such as aluminum, with an electric heating element in contact with the block. The vial fits loosely in the chamber. Compressed air passes into the chamber through an inlet in the block, so that the vial is revolved by a circular air flow in a vortex fashion. This revolving motion creates a vortex in the liquid inside the vial, and so mixes the liquid. The air circulation also improves heat transfer from the block to the vial.

Abstract: A dynamic heat sink having a stator incorporating a plurality of concentric annular cooling fins and a rotor having a plurality of downwardly extending wipers extending between the stator fins is disclosed. The wipers are constructed to fit closely into grooves formed between the adjacent stator cooling fins so that as the rotor spins, the wipers remove air close to the walls of the cooling fins and deter the development of boundary layer air to thereby enhance heat transfer to the cooling fluid. The wipers serve to move the heated air out of the grooves between the stator fins and upwardly into the free stream of cooling air for removal.

Abstract: A heat exchanger comprising an outer envelope having an inlet and an outlet for passage of an associated first heat exchange fluid therethrough. A first tube is mounted within the envelope for external contact by the first heat exchange fluid, and adapted for passage of a second heat exchange fluid therethrough in physical isolation from the first exchange fluid. A generally helical blade is disposed within the first tube for free rotation and free axial movement. The blade has a laterally centered bearing portion on at least one end thereof which has a diameter relative to that of the first tube, such as to cause the helical blade to pass in closely spaced relation to the inside surface of the first during rotation. A bearing member is disposed adjacent at least one end of the helical blade which comprises a porous member disposed in substantially aligned relationship with the helical blade.

Abstract: A heat exchange device including at least one inner cylinder member and at least one outer cylinder member, defining therebetween one or more annuli through which pressurized heat exchange medium is forced to flow. One or more rotatable members having formed thereon a plurality of finger-like projections that define longitudinal continuous or segmented grooves are disposed within the annuli. The pressurized heat exchange medium imparts angular force to the rotatable member causing it to flow vary rapidly with great vorticity within the grooves and also between the distal ends of the finger members and the adjacent containing circumferential surface of the inner and outer cylinder members. In some cases, angular force is imparted to the rotatable member(s) by external power sources, as a supplement to the flow of the pressurized heat exchange medium.

Abstract: The invention relates to a device for maintaining in position one end of an element driven in rotation by a fluid circulating in a tube (12), the other end of said element being free, said device being of the type which comprises a part forming a bearing (1) and adapted to be rigidly attached to one end of the tube, and an element (4), mounted for rotation relative to the part forming a bearing (1) and adapted to be attached to one end of the movable element (13). In accordance with the invention, the part forming a bearing (1) is a one-piece part made of a rigid material that is capable of being elastically deformed, said one-piece part comprising at least two flanges (2) spaced apart by such a distance that they can be force-fitted into an open end of said tube (12) to bear elastically on its inner wall so as to rigidly join the part forming a bearing (1) to the tube.

Abstract: A tube-and shell double-pipe or liquid-air fin type heat exchanger, which offers a high level of thermal energy transfer efficiency, incorporates a rotary blade to disrupt a fluid film on surfaces of each tube, and is of uncomplicated design and construction. The blade is free-floating and operates regardless of the direction of flow of the liquid through the tubes.

Abstract: A device for attaching an element for rotation in a tube comprises a conical sleeve, a hook and a link-pin. The link-pin interconnects the hook and the sleeve while permitting rotation of the hook. A particular application of the attachment device is to position an Archimedes' screw in the tubes of a multitubular heat exchanger, a steam condensor or the like. The assembly can be dismounted, if desired, and is adaptable to different tube diameters.

Abstract: Individually useable wave-powered pumping means, solar distillation means, and cyclonic wind generating means, together with a system which employs each of them for harnessing natural energy sources are disclosed. Wave and solar energy, together with Coriolis acceleration are employed in the system which includes a basin for water situated near an ocean, or other such body of water, having a surface subject to wave action. A solar energy trasmitting cover is provided over the basin for solar heating, and evaporation of water contained therein. Vapor condensing means are located adjacent the bottom of the basin, and an upwardly extending inlet conduit, or passageway, connects the condenser to a source of water vapor above the water surface of the covered basin. Cooled air, and distilled water, are discharged from the condenser to a location outside the covered basin.

Abstract: Individually useable wave-powered pumping means, solar distillation means, and cyclonic wind generating means, together with a system which employs each of them for harnessing natural energy sources are disclosed. Wave and solar energy, together with Coriolis acceleration are employed in the system which includes a basin for water situated near an ocean, or othe such body of water, having a surface subject to wave action. A solar energy transmitting cover is provided over the basin for solar heating, and evaporation of water contained therein. Vapor condensing means are located adjacent the bottom of the basin, and an upwardly extending inlet conduit, or passageway, connects the condenser to a source of water vapor above the water surface of the covered basin. Cooled air, and distilled water, are discharged from the condenser to a location outside the covered basin.

Abstract: A portable electric hot air rework tool for directing a stream of turbulent hot air through removable and replaceable nozzles with a selectably sized orifice to predetermined size localized areas of a printed circuit assembly until a temperature sufficient to melt solder is achieved, thereby facilitating the soldering/desoldering of circuit components or parts of components mounted thereon. The apparatus essentially comprises a portable work station having upper and lower heat tubes, or plenums, through which a blower-forced stream of air made turbulent by turbulators with contra-pitched blades is directed, an adjustable support grid for supporting the pc assembly, within the directed air stream and a three-position switch for controlling the temperature and flow of the air in the heat tubes. An alignment positional indicator aids in precise location of the printed circuit assembly.

Abstract: A heat transfer system for transferring heat into a first body of water flowing through a first conduit (20, 22, 24) from a heated second body of water (12) that is flowing through a second conduit (14), the two conduits being contiguous to each other. A pump (26 or 62) operates to force the second body of water through the second conduit. A motor (32 or 60) is so connected to the pump as to operate the pump when the motor is actuated and an arrangement is provided to actuate the motor in response to the flow of the first body of water through the first conduit.

Abstract: A thermal energy storage apparatus and method in which containers holding a salt hydrate heat storage material are rotated by convection currents created in a bath liquid surrounding the containers, thereby increasing the life of the heat storage material without having to supply energy for an externally located rotating means. More specifically, an enclosure for a bath liquid is provided, the enclosure containing two vertically-extending baffles which together define a column of bath liquid in which the heat storage containers are rotatably mounted. A heat transfer means is provided at the bottom of the column between the two baffles and a heat removal means is provided at the top. As heat is transferred to the bath liquid, a convection current is created which in turn rotates the containers while heat energy is being transferred from the bath liquid to the salt hydrate material.

Abstract: The invention relates to a heat-recovering fan comprising a rotating capillary impeller with a separating plate inside to separate the air currents and being in communication with separate supply air and exhaust air outlets. The invention provides a heat recovering fan having a capillary impeller. The optimum heat storage capacity of the capillary impeller is used for effecting a very high degree of heat recovery. The heat recovering fan of this invention has at least one vane wheel used as an air conveyor in combination with the capillary impeller. Consequently, there is a separation between heat exchanger, on the one hand, and air conveyor on the other hand. The capillary impeller may be designed exclusively on the basis of good heat exchanging properties such as type material and dimensions because the air conveyance is effected by at least one vane wheel. The air conveyance is performed by the vane wheel or vane wheels which on their part, are designed in accordance with their sole purposes.

Abstract: A spirally configured member, rotatably positioned within an elongated tube, the spiral member adapted to continuously clean the tube's interior wall when such member is caused to rotate. The spiral has one end rotatably anchored by a plug fixed to one upstream end of the tube and a swivel linking the plug and the spiral member.