Abstract: A suction muffler for a reciprocating compressor comprises a first housing portion and a second hosing portion. The first housing portion comprising a first inlet opening, and a second inlet opening. The second housing portion comprises a blocking member configured to block one of a first refrigerant flow path from the first inlet opening to a suction muffler outlet and a second refrigerant flow path from the second inlet opening to the suction muffler outlet. The blocking member can be provided in different configurations by a selection of the second housing portion or by configuring the relative arrangement of the first housing portion and the second housing portion.

Abstract: The present disclosure relates to a heating, ventilation, and air conditioning (HVAC) system that includes an energy recovery conduit that is configured to extend between and fluidly couple an outlet of a central housing of an outdoor HVAC unit and a condenser section of the outdoor HVAC unit.

Abstract: Aspects of the disclosure generally relate to at least one device for heat transfer or dissipation. The at least one device for heat transfer or dissipation can include an air-to-air heat exchanger. The air-to-air heat exchanger can include an air flow inlet and various slots to establish a flow-through air path.

Abstract: A chassis having embedded air jets for cooling a computer device is disclosed. The chassis includes a pair of side walls defining a front end and a rear end. The chassis includes a bottom plate for mounting an electronic component. Ducts are supported by each of the side walls. The ducts include a front opening and a rear opening. Two static fans are coupled to the rear openings of the ducts. A nozzle frame is located at the front end of the chassis. The nozzle frame includes a lateral nozzle bar emitting an air jet generated from the front openings of the ducts.

Abstract: An apparatus includes a processor to provide a control Signal for a printhead of a printer and a housing including a cavity. The processor is arranged in the cavity. The apparatus has a first opening and a second opening in the housing and in communication with the cavity. The first opening receives a first part of a fluid flow passing the housing, and the second opening discharges heated fluid from the cavity.

Abstract: The present invention provides acryogenic vessel (200), in particular for use in a magnetic resonance examination system (110) to mount therein superconductive main coils (142, 144) of the magnetic resonance examination system (110), comprising an inner vessel (202), an outer 300K vessel (204), and a radiation shield (206), which is located between the inner vessel (202) and the outer 300K vessel (204) and which surrounds the inner vessel (202), whereby the radiation shield (206) has at least one dry-friction area (206), where dry-friction is generated upon deformation of the radiation shield (206). The present invention also provides a superconductive magnet (114) for a magnet resonance examination system (110) comprising a set of superconductive main coils (142, 144), which are arranged in the above cryogenic vessel (200). The present invention further provides a magnet resonance examination system (110) comprising the above superconductive magnet (122).

Abstract: A method of constructing an air handling unit includes forming an air handling enclosure, mounting a blower in the air handling enclosure, mounting a heat exchanger in the air handling enclosure downstream of the blower, and mounting at least one heating element in the air handing enclosure downstream of the blower. A method of operating an HVAC system includes disposing a heat exchanger downstream of a blower within an enclosure, providing an airflow through the enclosure, and orienting a plurality of fins on the heat exchanger to stabilize the airflow exiting the heat exchanger prior to the airflow contacting an electrically-powered resistive heating element.

Abstract: An induction-displacement neutral wall air terminal unit includes a housing defining a supply airflow path, a connected return airflow path, and a heating airflow path separated from the supply and return airflow paths by at least one interior wall. The unit also includes a plurality of induction-type nozzles located within the supply airflow path, that are deliver a ventilation air flow stream into the supply air flow path. The nozzles induce a return air flow stream through the return air flow path that mixes with the ventilation air flow stream to form a supply air flow stream delivered to a supply air outlet. A heating element is disposed within the heating airflow path to heat air within the heating air flow path. A plurality of fans may be placed within the heating airflow path to increase the overall heating capacity of the unit.

Abstract: A first fan controlling section of a controller circuit is configured to control a first blower fan so as to induce the discharge of the airflow of a cool air through a first air outlet defined in a first enclosure of an indoor unit of the air conditioner. A second fan controlling section is configured to control second blower fans so as to induce the discharge of the airflows of a room air through second air outlets, respectively, defined in a pair of second enclosures disposed on the opposite sides of the first enclosure. An enclosure attitude controlling section is configured to change the respective attitude of the second enclosures relative to the first enclosure.

Abstract: A chilled beam has separate primary and secondary inlets and plenums each or which generates separate sets of induction jets to draw air through a chilled beam heat exchanger. Various system and method embodiments are described as well as features usable in conventional active chilled beams to facilitate the use variable thermal and ventilation load applications.

Abstract: In one embodiment, the invention is a method and apparatus for chip cooling. One embodiment of an apparatus for cooling a heat-generating device includes an inlet for receiving a fluid, a manifold comprising a plurality of apertures formed therein for decreasing the pressure of the fluid from a first pressure by adiabatic expansion for impinging the fluid on the heat-generating device once the pressure of the fluid is decreased from the first pressure.

Abstract: An air conditioning apparatus includes a casing having intake and blow-out ports, a partition member dividing an interior of the casing and having a fan entrance, a heat exchanger, a first drain pan mounted in the heat exchanger to receive water produced by dew condensation in the heat exchanger, and a centrifugal fan. The centrifugal fan includes a bladed wheel mounted in the fan compartment such that a rotary shaft of the bladed wheel is oriented along the fan entrance. The first drain is disposed adjacent to a drain pan nearby lateral part of multiple lateral parts of the casing that are disposed along the opening direction of the fan entrance. The rotary shaft is disposed adjacent to a bladed wheel nearby lateral part of the multiple lateral parts of the casing and being opposed to the drain pan nearby lateral part.

Abstract: A fluid temperature control installation for a rotorcraft, the installation comprising a system for cooling a main transmission (3) and a system for temperature control of the ambient air (32) of a cabin (16). A heat exchanger (8) is fitted with a bladeless ventilator (9). A source air stream (11) generated by an accessory compressor (5) driven by the main transmission (3) passes through the heat exchanger (8) where it takes heat. The source air stream (11) is distributed selectively to the bladeless ventilator (9) to generate a cooling air stream (13) passing through the heat exchanger (8), and/or is distributed to the cabin (16) after passing through the heat exchanger (8) in order to heat the ambient air (32) of the cabin.

Abstract: An air-extracting type heat dissipating apparatus includes a frame, a fan body, a plurality of air-inhaling holes and a plurality of air-exhaling holes. The side portion of the frame has an accommodating space. The fan body is disposed in the frame and has a first side and a second side. The air-inhaling holes are disposed on the side portion of the frame in corresponding to the accommodating space. The air-exhaling holes are disposed on the frame and located on the second side. An air is inhaled into the accommodating space through the air-inhaling holes, and exhaled to the first side through the air-exhaling holes, and then it is exhaled to the second side by the fan body.

Abstract: A heater is provided with a heater core having a source of thermal energy in a heat exchange relationship with a heat exchanger. A fan moves air through the heater core from an air inlet to an air outlet. The heater core is thermally insulated by an air jacket from an exterior case.

Abstract: In an induction emission air conditioning apparatus installed in a ceiling, it is provided within a casing with a heat exchanger through which a feed air introduced from an outdoor side passes, a fan passing the feed air through the air conditioning heat exchanger, and a heating and cooling unit 1 for blowing a mixed air obtained by inducing and suctioning the air in the room inside by using the feed air passing through the heat exchanger so as to mix with the feed air, into the room inside in a laminar manner, and emitting the heat of the mixed air to the room inside, integrally.

Abstract: A heat exchanger includes a heat exchanging section for performing heat exchange between a refrigerant and a cooling medium and a passage section. The passage section includes a first passage and a second passage for supplying the refrigerant to the heat exchanging section and a supply passage for supplying the refrigerant to the first passage and the second passage. The first passage and the second passage define a first opening portion and a second opening portion opening at an end of the supply passage. A minimum distance between an opening edge of the first opening portion and an inner surface of the supply passage is equal to a minimum distance between an opening edge of the second opening portion and the inner surface of the supply passage.

Abstract: An electronics cooling system comprises a tubular fan duct and an electronics housing. The fan duct includes has a fan duct casing containing a fan with rotor blades and stator vanes. The electronics housing is mounted directly on the tubular fan duct, such that the electronics housing and the fan duct casing together enclose an interior space. A cooling airflow path extends from a high-pressure region of the tubular fan duct, through an inlet hole into the interior space, and out a bleed hole into a surrounding environment. The electronics cooling system further comprises three electronics mounts within the interior space. A first electronics mount is located immediately adjacent to the inlet hole, on the fan duct. A second electronics mount is located immediately radially outward of the stator vanes, on the fan duct. A third electronics mount is located immediately adjacent to the bleed hole, on the housing.

Abstract: The present invention relates to a refrigerator unit and/or a freezer unit comprising at least one fan, at least one compressor and at least one condenser, wherein the fan is arranged such that it applies air to the compressor and to the condenser in parallel.

Abstract: A pulsed-jet active flowfield control actuation system enhances the rate of heat transfer and heat removal in a heat exchanger for better management of thermal loads. The pulsed jet actuators impart an unsteady component of velocity to the working fluid of the heat exchanger. This design increases the convective heat transfer, and avoids increases in heat exchanger volume and weight for a given performance value.

Abstract: A portable heater (100) is provided. The portable heater (100) comprises an air inlet (108) and an air outlet (118). The portable heater (100) also comprises a heating chamber (115) including one or more heating elements (230). A preheating chamber (114) is provided that is located between the air inlet (108) and a heating chamber inlet (116).

Abstract: Methods and systems for algae production are provided, the methods and systems generally comprising providing at least one body of water having an algae population in suspension, growing algae, heating the body of water with a heat source, heating the algae process with a heat source, drying the algae with a heat source, and covering the body of water with a cover. Heat recovery systems, algae processing, and covers are also provided.

Abstract: A space heater with a linear source of infrared radiant energy in heat exchange relationship with a heat exchanger formed of copper or aluminum material. The copper is pretreated to soften the copper and partially blacken the surface thereof. The aluminum is anodized and electrolytically colored dark. The space heater is thermally more efficient than a comparable space heater wherein the copper or aluminum has not been pretreated. The linear source of infrared radiant energy and heat exchanger are mounted in a heater core that is thermally insulated by an air jacket from an exterior case.

Abstract: An electronic device has at least one component that is capable of generating a quantity of heat. The electronic device further has an air-moving device and an air duct. The air moving device is capable of creating a flow of air that removes a portion of the quantity of heat. The flow of air enters the air duct. The air duct has a restriction chamber that includes a venturi vent in which the flow of air into the duct and through the restriction chamber creates a new flow of air into the venturi vent. The new flow of air into the venturi vent does not pass over the at least one component in the electronic device.

Abstract: The invention concerns a supply air terminal device (10) including side plates (12) and an air guiding part (13). A heat exchanger (14) is fitted in the device below a supply air chamber (11) for supply air in between air guiding parts (13) located on both sides of the central axis (Y1) of the device. In the device, the supply air chamber (11) includes nozzle apertures (12a1, 12a2, . . . , 12b1, 12b2 . . . ) to conduct fresh supply air into a side chamber (B1) and to induce a flow of circulated air (L2) from the room space through the heat exchanger (14) into the side chamber (B1). Using the heat exchanger (14) the circulated air may be either cooled or heated. The equipment includes a control device (15) for the induction ratio of the supply air flow (L1) and the circulated air flow (L2) for controlling in which ratio there is fresh air (L1) and circulated air (L2) in the combined air flow (L1+L2).

Abstract: A condenser includes a cooling section having a plurality of vapor passages to convert vapor into water, a blower for drawing water produced in the vapor passages out of the vapor passages, and a recovery section for receiving the drawn-out water. Thus, the water produced in the vapor passages in the cooling section can be prevented from occluding the vapor passages.

Abstract: The invention concerns a supply air terminal device (10), which includes a supply air chamber (11) and therein nozzles (12a1, 12a2 . . . ), through which supply air is conducted into an internal side chamber (B1) of the device. In the device solution, the supply airflow (L1) induces a circulated airflow, that is a secondary airflow (L2), from the room space (H1) to flow through a heat exchanger (13) of the device into the side chamber (B1) to join the supply airflow (L1). In the device solution, the combined airflow (L1+L2) of supply air and circulated air is made to flow sideways from the device. The central axes (X1) of the nozzles (12a1, 12a2 . . .

Abstract: A portable thermoelectric cooling and heating appliance device and associated method of using the device are disclosed. The device comprises: a generally rectangular box, a hinge, a generally rectangular lid, a locking means, and a power cord. The box has a divider wall which defines a partition between a left and a right chamber within the box. The box further includes: an outer shell; an insulation layer; a inner shell; a power input plug; a first heat transfer unit; a first network of cooling/heating coils; a first control knob having a first voltage regulator and a first thermostat operationally connected to each other; a first spigot having a first button and a first drain; a second heat transfer unit; a second network of cooling/heating coils; a second control knob having a second voltage regulator and a second thermostat operationally connected to each other; and a second spigot having a second button and a second drain. The hinge is attached to the outer shell of the box.

Abstract: An air-conditioning device especially for ceiling placement with low build-in height and comprising at least one preferably vertically oriented heat exchanger, with substantially horizontal percolation of the room air and at least one ventilation channel for fresh air provided substantially parallel to and within a small distance from the heat exchanger, at its outlet side, a downwards open air chamber provided between the ventilation channel and the heat exchanger, and air nozzles provided in the channel side wall of the ventilation channel facing the air chamber, which are directed towards the outlet of the air chamber. The ventilation channel is provided with a preferably convex channel wall which diametrically extends substantially from the upper corner of the ventilation channel to the lower corner of the ventilation channel. The heat exchanger and the ventilation channel are arranged with a downwards, diverging open air space.

Abstract: The invention concerns a supply air terminal device (10), which includes a supply air chamber (11) and therein nozzles (12a1, 12a2 . . . ), through which supply air is conducted into an internal side chamber (B1) of the device. In the device solution, the supply airflow (L1) induces a circulated airflow, that is a secondary airflow (L2), from the room space (H1) to flow through a heat exchanger (13) of the device into the side chamber (B1) to join the supply airflow (L1). In the device solution, the combined airflow (L1+L2) of supply air and circulated air is made to flow sideways from the device. The central axes (X1) of the nozzles (12a1, 12a2 . . .

Abstract: The invention concerns a supply air terminal device (10) including side plates (12) and an air guiding part (13). A heat exchanger (14) is fitted in the device below a supply air chamber (11) for supply air in between air guiding parts (13) located on both sides of the central axis (Y1) of the device. In the device, the supply air chamber (11) includes nozzle apertures (12a1, 12a2, . . . , 12b1, 12b2 . . . ) to conduct fresh supply air into a side chamber (B1) and to induce a flow of circulated air (L2) from the room space through the heat exchanger (14) into the side chamber (B1). Using the heat exchanger (14) the circulated air may be either cooled or heated. The equipment includes a control device (15) for the induction ratio of the supply air flow (L1) and the circulated air flow (L2) for controlling in which ratio there is fresh air (L1) and circulated air (L2) in the combined air flow (L1+L2).

Abstract: A container useful for keeping food or beverages warm or cold includes a combination lid and tray door assembly. The lid and tray are both coupled to the container and to each other. The tray may be pivoted independently of the lid into a table top position and it may be separated from the container and used as a separate tray. The tray and lid are also pivotable together as an integral door assembly, and the lid is pivotable independently of the tray when the tray is removed or deployed as a table top. The overall height of the container is less than the overall length and the overall width so that the container has a low, stable center of gravity which permits it to be used on an unstable surface, such as an automobile seat, and so that the container does not obstruct movement or view of occupants of an automobile when it is used in an automobile.

Abstract: An electronic device has at least one component that is capable of generating a quantity of heat. The electronic device further has an air-moving device and an air duct. The air moving device is capable of creating a flow of air that removes a portion of the quantity of heat. The flow of air enters the air duct. The air duct has a restriction chamber that includes a venturi vent in which the flow of air into the duct and through the restriction chamber creates a new flow of air into the venturi vent. The new flow of air into the venturi vent does not pass over the at least one component in the electronic device.

Abstract: To reduce noise caused by exhausted cooling air as well as to maintain a necessary amount of cooling air of a cooling fan. A cooling fan is positioned behind a radiator. A shroud surrounds an impeller coupled to a motor and a rotating shaft. The shroud has an inlet and an outlet in the shape of a bell mouth. The bell mouth shaped inlet has its front edge spaced from the rear surface of the radiator by a clearance D, and forms a space around its front peripheral edge. A space is formed via the space, and opens around the periphery of the shroud. The ratio A:B is 1:3 to 5, preferably approximately 1:4, where A denotes a difference between maximum and minimum diameters of the bell mouth shaped outlet of the shroud, and B notes a length of the shroud.

Abstract: A fan assisted heat sink cooling device is disclosed in which the heat sink assembly also forms the housing surrounding the fan. The housing is constructed of a plurality of cooling vanes which have elongated openings therebetween allowing air to pass between and cool the vanes. The vanes are angled in an approximately opposite manner to the orientation of the fan blades in order to minimize the noise generated by the cooling device when in operation. The cooling device operates in an extremely efficient manner by causing air to pass over the cooling vanes twice.

Abstract: Apparatus for cooling a condenser of a room air conditioner. The apparatus has a first fan coupled to a driving shaft of a driving motor, a second fan which has a circular band and is coupled to an edge portion of the driving shaft for accelerating air blown by the first fan, a skirt member for guiding the air accelerated by the second fan toward a center portion of the condenser, a mounting flange assembled to the condenser, and fixing members for fixing the skirt member to the mounting flange. The circular band surrounding the first fan converges toward the condenser and the skirt member is flared toward the condenser so that air passing through the second fan is accelerated toward the center portion of the condenser and experiences a minimum pressure drop. Air flowing along an outer wall of the skirt member cools a circumferential portion of the condenser. The apparatus uniformly cools the condenser, thereby improving an air conditioning efficiency of the room air conditioner.

Abstract: A fan assisted heat sink cooling device is disclosed in which the heat sink assembly also forms the housing surrounding the fan. The housing is constructed of a plurality of cooling vanes which have elongated openings therebetween allowing air to pass between and cool the vanes. The vanes are angled in an approximately opposite manner to the orientation of the fan blades in order to minimize the noise generated by the cooling device when in operation. The cooling device operates in an extremely efficient manner by causing air to pass over the cooling vanes twice.

Abstract: A retrofit air conditioning system for use with an existing induction air conditioning system is disclosed, wherein the existing system includes a central fan unit supplying air to a plurality of distribution units in corresponding rooms. The retrofit air conditioning system includes a retrofit air conditioning unit sized for receipt in an existing distribution unit. The retrofit air conditioning unit includes a fan downstream of an adjustable damper for inducing conditioned air from the central fan unit and for inducing recirculated air from the room. A microcontroller receives a temperature signal from a thermostat and produces a damper signal to adjust the damper in accordance with the sensed temperature. Also disclosed is a retrofit central fan unit for use with the retrofit induction unit, wherein the retrofit central fan unit supplies varying amounts of conditioned air to the distribution units to maintain a constant supply pressure.

Abstract: A cooling and waste collection system for a sewing machine which includes a fan connected to a main shaft of the sewing machine, and an air passage having a suction passage and a cooling passage, where the suction passage feeds in air from the outside atmosphere to an air blowing chamber. The cooling passage feeds air from the air blowing chamber to an oil pan of the sewing machine. The suction passage has one end connected to the air blowing chamber and another end opening at the work area of the sewing machine. The cooling system further comprises a waste collection system positioned in the air passage for accumulating waste materials generated when sewing.

Abstract: A radiator cooling apparatus for an automotive internal combustion engine is provided. The apparatus comprises an air suction duct or air injection duct connected to a closed-type blower. The suction duct draws ambient air through the core of the radiator and cools the hot water in the core. The injection duct injects ambient air toward the core and cools the hot water in the core. On the active surface of the duct, a plurality of bellmouths or nozzles are formed. The existing fan is removed from the engine, whereby fan noise is eliminated.

Abstract: A jet blower having a housing, a cylindrical chamber, a blower wheel in the chamber, four tangential passageways from said chamber, the passageways terminating in axially-directed nozzles and a Venturi foil surrounding each nozzle.

Abstract: A heat exchanger for use where any of a number of possible configurations of ductwork are possible, includes an approximately rectangular housing having a first panel with a surface area and with four corners including a first and a second corner situated diagonally opposite one another, and a third and fourth corner situated diagonally opposite one another. A heat exchanger is coupled to the panel situated approximately diagonally within the housing spanning from approximately the third corner to the fourth corner such that the housing is partitioned into a first chamber adjacent the first corner and a second chamber adjacent the second corner. A first duct is situated near the first corner on the first panel and occupying less than approximately 1/4 of the surface area, for coupling air to the first chamber. A second duct is situated near the second corner on the first panel and occupying less than approximately 1/4 of the surface area, for coupling air from the second chamber.

Abstract: An arrangement in a heat-exchange unit comprising heat-emitting or heat-absorbing means which are exposable to an incoming medium flow entering the unit and which are effective to change the energy content of incoming medium flow to form an exiting medium flow which leaves the unit. A further medium flow is delivered to the incoming medium flow in the vicinity of the unit, this further medium flow being so directed as to force the incoming medium flow through the unit with the aid of an ejector effect.

Abstract: The cooling apparatus for removal of heat from at least one compartment, enclosed space or the like containing electronic or electrical components comprises a metallic ribbed body mounted on the outside of or constructed as a part of a peripheral wall of the compartment and a blower mounted outside of the compartment acting to blow cooling air into the cooling air channels of the ribbed body facing it. The longitudinal direction of the cooling air channels of the ribbed body is so inclined to the direction of flow of the cooling air prior to deflection by the ribbed body that fuzz does not collect on the metallic ribbed body to such an extent that the heat transfer would be impaired. Advantageously, the ribbed body is inclined at an angle of from approximately 35.degree. to 55.degree., preferably from 40.degree. to 50.degree., with respect to the direction of flow of the cooling air before it is deflected.

Abstract: A space heating device which utilizes infrared lamps has enhanced heat transfer, and achieves an air flow velocity increase of approximately 30 percent, resulting in increased efficiency. A heat exchanger comprising a plurality of spaced, parallel copper tubes, and a plurality of spaced, parallel aluminum fins connected and extending perpendicular to the tubes, is mounted above the infrared lamps and in an air flow path within a casing so that air is circulated by a fan from a cool air inlet, past the lamps, beneath, around, and above the heat exchanger, through the tubes of the heat exchanger, and through the spaces between the fins and tubes, to the heated air outlet. Bottom portions of the fins are coated with black carbon paint to enhance heat transfer, and curved deflectors are provided adjacent the bottom of the lamps and adjacent the top of the heat exchanger on one end thereof, to facilitate guiding of the air in a generally S-shaped path through the casing.

Abstract: In order to cool heat generating components on an electronic assembly without contamination by particles carried in a cooling gas stream, a cold plate is disposed adjacent the assembly, defining a gap region therebetween. The cooling gas is directed in proximity to the cold plate, dissipating heat transferred from the components to the plate. To enhance overall heat dissipation of the apparatus, an aperture is defined between the gap region and the gas stream, so that a negative pressure is induced in the gap by virtue of the Bernoulli principle. This pressure difference induces convection within the gap, increasing heat flow between the components and the plate, and resulting in overall improvement in heat dissipation. Embodiments in which the gas stream flow is parallel and transverse to the cold plate are described.

Abstract: An electric heater adapted to be used as a space heater or to be mounted over the discharge end of a hot air duct to diffuse air flowing into a room from the hot air duct and to heat the air in the room. The electric heater includes a housing adapted to be positioned over the discharge end of a hot air duct, the housing including an air outlet opening, and an elongated chamber therein. An elongated heating element is housed in an elongated chamber defined by the housing. An air conduit is also located in the housing and extends parallel to the elongated heating element. Air outlet openings are provided along the length of the air conduit, and a centrifugal fan blows air into the air conduit and this air is forced through the air outlet openings toward the elongated heating element and such that air is directed toward the heating element along a substantial portion of the length of the heating element.

Abstract: A spot thermal conditioning apparatus selectively operable in warming and cooling modes includes a housing containing a suction blower and a fan with radial blades. The suction blower receives ceiling air and projects an exiting stream of the ceiling air along one leg of an acute angle to an intersection. The fan is located substantially at the intersection and not only receives the exiting blower stream but also concurrently draws a stream of floor air substantially along the other leg of the angle to the intersection. The mixed air is then expelled through a louver to provide directional control of the movement of the conditioned air mass and circulation of air to an open spot work area. The suction blower and fan also each include an electronic speed control circuit so as to allow completely independent operation.

Abstract: A forced air distributor for supplying air to an air intake of a baseboard heater which includes a duct assembly enclosing an elongated air passageway and an elongated discharge orifice along the upper portion of the air passageway adjacent to the air intake of the heater element. Air flow is directed into an open end of the air passageway by air pump means. A preheater filament element longitudinally disposed in the air passageway preheats in flowing air to compensate for the pressure drop along the air passageway so that a uniform flow of heated air flows out through the orifice.

Abstract: Air jets are used to entrain ambient air for forced air cooling of electronic components. In the preferred embodiment, individual air jets are associated with each circuit card to entrain and induce flow of a much greater volume of ambient air over each card, thereby cooling it. Modularization and "hot" servicing are facilitated because each circuit card may have its own cooling system, all of which may be powered by a central source of compressed air. The compressed air source may be remotely located resulting in lower noise and more compactness.