Abstract: A laminated fluid warmer includes: a laminate including a target fluid layer having a plurality of target fluid channels through which a warming target fluid flows, and a warming fluid layer that is laminated on the target fluid layer and has a plurality of warming fluid channels through which a warming fluid for warming the target fluid layer flows; and a collection device that collects at least a part of the warming fluid accumulated in the plurality of warming fluid channels. The collection device includes a storage portion that receives the warming fluid flowing out from the warming fluid channel when collecting the warming fluid.

Abstract: A protective seal removably fits onto the top of coil fins of a condenser unit for an air conditioning system. The protective seal has a U-shaped cross-sectional configuration that allows the protective seal to fit over and completely cover the entire top edges of the coil fins and to extend partially down the front and rear sides of the coil fins to cover an upper portion of the front and rear sides of the coil fins. The protective seal is further structured to follow the contour of the top edges of the coil fins around all sides of the condenser unit to protect the top edges and the upper portion of the front and rear sides of the coil fins when the top lid of the condenser housing is both hinged open and closed.

Abstract: In a heating, ventilating, and air conditioning (HVAC) system using a flammable refrigerant, a concentration sensor is used to check concentrations in the conditioned air or other locations. If concentrations are detected indicative a catastrophic or large leak, a purge valve is activated to immediately purge the refrigerant from the closed-conduit circuit of the system to a safe location. With lesser leaks, the blower may be activated and the leak monitored.

Abstract: An intercooler drain system which drains condensate from an intercooler includes an upper header, a lower header, and a plurality of tubes connecting the upper header and the lower header, the intercooler drain system including: a drain passage allowing the condensate collected in the lower header of the intercooler to be drained; and a valve opening and closing the drain passage. The valve has a specific gravity less than a specific gravity of the condensate, and when the condensate is collected above a predetermined level in the lower header, the valve rises due to buoyancy to open the drain passage.

Abstract: Provided is a cooling module, and more particularly, a cooling module configured to include a condenser, an intercooler, and at least one radiator, and discharge a heat exchange medium by changing a shape of peripheral components without configuring separate components such as a separate hose when the heat exchange medium inside a radiator disposed on an upper part of the intercooler is discharged.

Abstract: A liquid drain valve assembly for a charge air cooler includes a valve housing configured to couple to the charge air cooler, the valve housing having a condensate inlet configured to receive condensate from the charge air cooler, and a condensate outlet, a valve mechanism slidingly disposed within the valve housing and configured to selectively close the condensate inlet and the condensate outlet to facilitate preventing charge air from leaking during condensate draining, and a diaphragm assembly disposed within the valve housing and configured to selectively engage the valve mechanism to selectively open the condensate inlet and the condensate outlet to drain condensate from the charge air cooler when the charge air cooler is in a boosted condition and isolated from the atmosphere.

Abstract: The invention provides a high-performance liquid chromatography system, said system is controlled in temperature by running a fluid in sleeves that surround the different parts of the system. All parts in contact with the fluid are made in fluoropolymer, carbon-filled fluoropolymer, or carbon-fiber fluoropolymer.

Abstract: The invention relates to a method for preventing and detecting coolant discharges from complex hydraulic systems. The aim of the invention is to configure such a method in such a way that this method in particular meets requirements for preventing/limiting the development of explosive atmospheres in working areas and for reducing measures from previously otherwise typical requirements for Ex zones. This aim is achieved in that a circuit carrying coolant is divided into small volumes that have stop valves and a relief valve, wherein a leak detection diagnosis can be carried out by means of a pressure sensor that can be integrated.

Abstract: An expansion relief header and its method of operation are disclosed for use in an HVAC heat transfer coil. The expansion relief header includes a main body adapted to be secured to bends in fluid coils of the HVAC fluid tube system. The main body includes holes in alignment with holes formed in the bends to enable fluid to pass from the bends into the expansion relief header. The expansion relief headers include one or more relief devices, such as valves, that automatically open, preferably in response to pressure exceeding a predetermined threshold value or temperature falling below a predetermined value, to release fluid from the expansion relief header and then reseat themselves.

Abstract: Various embodiments of a heat-exchange dryer apparatus are disclosed. In one embodiment, a heat-exchange dryer apparatus includes a desiccant cartridge comprising desiccant material, a purge-air reservoir secured to the desiccant cartridge, and a compressed-air conduit disposed inside the purge-air reservoir. In another embodiment, a vehicle air-brake system includes an air compressor, a desiccant cartridge comprising desiccant material, and a heat exchange dryer apparatus disposed between the compressor and the desiccant. The temperature of the compressed air is decreased while the temperature of the purge air is increased and the desiccant adsorbs a greater amount of contaminants form the compressed air for improved drying.

Abstract: An expansion relief header is disclosed for use in an HVAC heat transfer coil. The expansion relief header includes a main body adapted to be secured to bends in fluid coils of the HVAC fluid tube system. The main body includes holes in alignment with holes formed in the bends to enable fluid to pass from the bends into the expansion relief header. The expansion relief headers include one or more relief devices, such as valves, that automatically open, preferably in response to pressure exceeding a predetermined threshold value or temperature falling below a predetermined value, to release fluid from the expansion relief header and then reseat themselves.

Abstract: A plate heat exchanger may include a plurality of trough-shaped heat exchanger plates stacked one on top of each other. Each plate may define a plurality of openings configured to receive a first fluid and a second fluid separated from the first fluid. An upper cover plate may have crossed embossed recesses aligned with and arranged on the openings of the heat exchanger plate in a sealed manner.

Abstract: A condenser includes a first header tank which is provided on one side of the condenser, a second header tank which is provided on the one side of the condenser and which has a gas-liquid separation function, and a third header tank provided on another side of the condenser opposite to the one side. First heat exchange tubes extend in an extending direction between the first header tank and the third header tank to connect the first header tank and the third header tank. Second heat exchange tubes are provided below the first heat exchange tubes and extend in the extending direction between the second header tank and the third header tank to connect the second header tank and the third header tank. The second heat exchange tubes are longer than the first heat exchange tubes in the extending direction.

Abstract: A heat exchanger includes a housing designed to envelop a heat-exchange core bundle. The housing includes an opening that allows the heat-exchange core bundle to be housed inside the housing. The heat-exchange core bundle includes a first end designed to plug the opening of the housing when the heat-exchange core bundle is inserted inside the housing, and a second end of the heat-exchange core bundle, opposite the first end, with at least one fastening means in the form of a peg, for fastening the second end of the heat-exchange core bundle to the wall of the housing.

Abstract: Systems and methods for replacing coolant of an x-ray tube assembly having a closed cooling system include a service port that is operatively connected to a portion of the x-ray tube assembly and a vacuum assisted service kit that is operatively coupled to the service port. Used coolant is drained from the x-ray tube assembly, and thereafter a vacuum is drawn on the x-ray tube assembly via the service kit. Replacement coolant within a vacuum tank of the service kit is degassed under a vacuum. The degassed replacement coolant is provided into the cooling system from the vacuum tank, preferably by pushing under pressure with an inert gas to prevent the introduction of any air into the replacement coolant. The replacement coolant may be pressurized in the cooling system with the inert gas. Thereafter, the service kit may be disconnected from the service port.

Abstract: A plate heat exchanger comprises first and second frame plates, side walls, and a stack of heat transfer plates. The heat transfer plates each has a center portion and a peripheral portion encircling the center portion, and they are arranged in pairs between the first and second frame plates. A first flow path for a first fluid exists between the heat transfer plates of the pairs and a second flow path for a second fluid exists between the pairs of heat transfer plates. The side walls extend between the first and second frame plates and enclose the stack of heat transfer plates. A first side wall of the side walls includes a through hole for draining a substance, originating from one of the first/second fluids, from inside to outside of the heat exchanger A first portion of the inside surface of the first side wall slopes towards the hole.

Abstract: A tube plug adapted to be driven into and then plug an open end of a heat exchange tube that extends transversely through and is secured in a tubesheet of a heat exchanger, where the tube plug includes an elongated shaft having a lead part adapted to be introduced into the open end of the heat exchange tube and an opposite rear part, and a fluid seal situated on the lead part, the seal including a set of lead and rear ring flanges fixed to the lead part, extending radially outward therefrom, and axially spaced apart from each other, and a compressible and resilient ring-shaped gasket adapted to encircle the lead part of the shaft when situated axially between the ring flanges.

Abstract: A furnace or other heat exchanger application for heating, ventilation, air conditioning and refrigeration systems having condensate control. Specifically, a condensate control for secondary heat exchangers is provided for use with high efficiency furnaces, particularly for small tonnage systems, such as residential or unitary systems. Condensate management permits a plurality of furnace orientations while providing resistance to corrosion due to liquid condensate.

Abstract: An outdoor unit of a refrigeration apparatus includes a heat exchanger constructed of aluminum or aluminum alloy, a floor frame, and a cap. The heat exchanger has a plurality of flat pipes arranged in rows so as to face a side face, a header manifold connected to each of the flat pipes, and a plurality of fins joined to the flat so that an exchange of heat occurs between a fluid flowing inside the flat pipes and air flowing outside the fiat pipes. The heat exchanger is mounted on the floor frame. The cap covers a lower end part of the header manifold from below the header manifold. The cap has a first drainage structure arranged so that if there is a gap between the header manifold and the cap water that has entered the cap via the gap drains out.

Abstract: A condensate trap upstream of an engine cylinder is provided. The condensate trap includes a condensate containment shelf positioned within an outlet manifold of an air cooler, above a lower side of the outlet manifold, and extending from a first lateral side of the outlet manifold to a second lateral side of the outlet manifold, the condensate containment shelf and a outlet port housing forming a condensate restriction in direct fluidic communication with an outlet port of the outlet manifold.

Abstract: Heat exchanger for a high efficiency hot air heating appliance (1), with at least one segment (5) and with a primary section (14) and, viewed in the flow direction (A), followed by a secondary condensing section (15), whereby the segment (5) consists of at least one primary element (16) and at least two secondary condensing elements (19), that form part of the secondary condensing section (15) of the segment (5), and the inputs (20) of each of them are connected in parallel to the output (18) of the primary element (16) in such a way that the gas flow coming from the primary element (16) is divided over the secondary condensing elements (19) connected to it.

Abstract: A heat exchange system and method of use are provided. The system may include an inlet, an outlet, and a plurality of tubes in communication with the inlet and the outlet. The plurality of tubes may include a first tube located adjacent to a second tube. A first drain conduit may be in communication with the first tube at a location between the inlet and the outlet, and a second drain conduit may be in communication with the second tube at a location between the inlet and the outlet, such that the first and second drain conduits are operable to drain fluid from the plurality of tubes. The method may include supplying fluid to the inlet, flowing fluid through the plurality of tubes, returning fluid to the outlet, and removing a portion of the fluid from the plurality of tubes via a drainage manifold that is in fluid communication with the plurality of tubes at a location between the inlet and outlet.

Abstract: The tank main body of a header tank of a condenser has slits formed in a circumferential wall thereof at positions between opposite end surfaces of the circumferential wall and heat exchange tubes at the opposite ends. Plate-shaped closure members are inserted into the slits from the outside of the tank main body and joined to the circumferential wall of the tank main body. Drain openings are formed in the circumferential wall of the tank main body at positions on the outer sides of the closure members as viewed in the longitudinal direction of the tank main body. A portion of a surface of each closure member which faces outward in the longitudinal direction of the tank main body forms a portion of a peripheral edge of the corresponding drain opening.

Abstract: The invention relates to a thermal control device intended to dissipate the heat generated by a payload on a spacecraft, comprising a number of surfaces and including means for circulating a refrigerant. An evaporation zone (Z1) comprises means for circulating the refrigerant, a compression zone (Z2), a condensation zone (Z3) comprising at least one radiating panel, linked to a part of the means for circulating the refrigerant, including several branches and comprising means to allow or inhibit the circulation of the refrigerant within these branches so as to vary the area of the heat exchange surface in the condensation zone, a pressure reduction zone (Z4) comprising means for circulating the refrigerant. Such a device is particularly well adapted to thermal problems encountered in telecommunications satellites.

Abstract: Methods and systems for controlling temperatures in plasma processing chamber via pulsed application of heating power and pulsed application of cooling power. In an embodiment, fluid levels in each of a hot and cold reservoir coupled to the temperature controlled component are maintained in part by a coupling each of the reservoirs to a common secondary reservoir. Heat transfer fluid is pumped from the secondary reservoir to either the hot or cold reservoir in response to a low level sensed in the reservoir. In an embodiment, both the hot and cold reservoirs are contained in a same platform as the secondary reservoir with the hot and cold reservoirs disposed above the secondary reservoir to permit the secondary reservoir to catch gravity driven overflow from either the hot or cold reservoir.

Abstract: A heat recovery steam generator (HRSG) (A) has a casing (2) and several heat exchangers in the casing. Some of those heat exchangers (12,16) take the form of coils (18) having multiple lower headers (36) into which the lower ends of tubes (18) open. The tubes (18) and headers (36) hold or may hold water and need to be drained from time to time. To this end, the heat ex changer (12,16) has a drain system (20) provided with drain pipes (40) that are connected to the lower headers (36) and contain check valves (48) that permit the water to flow away from the headers (36), but not into them. The drain pipes (40) lead to and open into a drain manifold (46). The drain pipes (40), check valves (48) and drain manifold (46) are assembled in a shop along with the coil (18) and, when the HRSG (A) is assembled in the field, lie within the interior of the casing (2).

Abstract: Heat exchanger for a high efficiency hot air heating appliance (1), with at least one segment (5) and with a primary section (14) and, viewed in the flow direction (A), followed by a secondary condensing section (15), whereby the segment (5) consists of at least one primary element (16) and at least two secondary condensing elements (19), that form part of the secondary condensing section (15) of the segment (5), and the inputs (20) of each of them are connected in parallel to the output (18) of the primary element (16) in such a way that the gas flow coming from the primary element (16) is divided over the secondary condensing elements (19) connected to it.

Abstract: A heat exchanger has a first passage to be connected to a source of fuel. The heat exchanger has an outlet to communicate the fuel downstream. A second passage connects to a source of air. The air passes adjacent to the first passage to heat fuel in the first passage. A jet pump is positioned downstream of the second passage to receive air from the second passage. The jet pump includes a tap connected to a housing compartment to drain fluid from the compartment. A method is also disclosed.

Abstract: Use of an inert gas in a fluid-operated heat exchange system. A cooling loop of a heat exchange system is purged with an inert gas to remove oxygen from the cooling loop. Coolant is added to the cooling loop of the heat exchange system. The coolant flows in the cooling loop of the heat exchange system to mix the inert gas with the coolant to provide a solution having a reduced concentration of oxygen.

Abstract: A reactor and a reactor system for carrying out high temperature and high pressure reactions is disclosed herein. The reactor has an isolatable inner vessel for allowing for heat energy efficient cooling and heating of the reactor.

Abstract: A water-cooled heat sink includes a base, a box, a propelling module, a driving module, and a plurality of conduits. The box is disposed above the base, and receives a cooled liquid. The driving module includes a first magnet. The base defines a plurality of channels. The propelling module includes a cylinder, a piston, a second magnet, and a valve. The cylinder is disposed on an inner wall of the box. The piston is disposed in the cylinder, and defines a through hole in a middle portion thereof. The second magnet is fixed to the piston. The valve is fixed in the through hole. The conduits interconnect the cylinder and the box. The first magnet can repel or attract the second magnet, thereby sliding the piston toward the cylinder to close the valve or away from the cylinder to open the valve.

Abstract: Disclosed herein is a heat exchange apparatus. The apparatus comprises one or more double walled conduit, each having an outer conduit and an inner conduit located coaxially inside the outer conduit. The conduits define a first fluid passageway for cold water at a first temperature. A drain defines a second fluid passageway for grey water at a second temperature and is located in the drain and downstream of the grey water flowing therethrough. The grey water when flowing in the second fluid passageway effects heat transfer to the cold water flowing in the first fluid passageway across the inner and outer conduits.

Abstract: A vehicular air conditioning apparatus is equipped with a casing having respective air passages therein, and first and second blower units are connected to the casing. Further, the casing is constituted by first and second divided casings. In addition, air is supplied to the interior of the casing from the first and second blower units. Moisture, which is generated when the air is cooled by an evaporator, is guided to forward bottom surfaces of the first and second divided casings and the moisture is discharged to the exterior from first drain ports disposed at terminal end positions of inclined surfaces that decline gradually toward opposite sides of the casing.

Abstract: A vehicle heat exchanger includes at least one end tank and a protruding fluid outlet formed integrally and in fluid communication with the at least one end tank. A push-connect fitting is configured to removably attach to the protruding fluid outlet, and to selectively perform at least a draining function.

Abstract: The present invention relates to a heat exchanger for a vehicle, in which a second radiator as a heat exchanger for cooling electronic components, such as an inverter and a motor, and a first radiator as a heat exchanger for cooling an engine are manufactured into an integral-type heat exchanger, and a reservoir tank is integrally coupled to the integral-type heat exchanger.

Abstract: Apparatus and methods for detecting leaks in a heat exchangers use mass gas flow metering. A regulated gas supply passes through a mass flow meter before entering either the product chamber or media chamber of a heat exchanger. The regulated gas supply passes into the heat exchanger through an inlet connection. All other inlets and outlets to the testing chamber are closed and isolated so that the chamber holds an applied pressure. The chamber on the opposite side of the heat exchanger is opened to atmosphere. Once gas fills the chamber and a static pressure is realized, the test begins by simply monitoring gas flow. If no flow is indicated, no flow rate is detected, and there is no detectable leak. Gas flow into the test chamber, at any given flow rate, as sensed by the sensitive mass flow meter, is an indication that leakage between the chambers exists.

Abstract: A heat dissipating device includes a heat sink, a pump connected to the heat sink, and a radiator connected to the heat sink and the pump. The radiator includes spaced apart first and second side tanks. The second side tank defines an inner space therein and is formed with a coolant-refilling opening in fluid communication with the inner space. The radiator further includes a cap mounted removably on the second side tank for closing sealingly the coolant-refilling opening, a plurality of conduits interconnecting and in fluid communication with the first and second side tanks, and a fin structure disposed between the first and second side tanks and connected to the first and second side tanks and the conduits.

Abstract: The present invention includes an apparatus for watertight sealing of a steam generator nozzle and methods for installing the apparatus. The apparatus comprises a nozzle dam, a nozzle dam attachment ring, and a seal. The attachment ring is provided in an interior of the nozzle and has a plurality of retaining tabs and a nozzle dam landing. The nozzle dam is adapted for insertion into the attachment ring and abutment against the nozzle dam landing. The nozzle dam has a plurality of radial protrusions adapted to interlock with the retaining tabs for fixing the nozzle dam in the attachment ring upon rotation of the nozzle dam in the attachment ring. The seal covers at least one side of the nozzle dam for effecting a seal between the nozzle dam and the attachment ring. The present invention also provides methods and apparatus for the pressurization and control of nozzle dam seals.

Abstract: A vertical heat exchanger is described, which allows efficient elimination of the gas generated therein and efficient removal of the sludge accumulated therein. The vertical heat exchanger has at least part of one end of a vent pipe formed of an upper tube sheet part (an upper cover part in the case of a spiral heat exchanger) and the other end thereof connected outside the heat exchanger to an immediately adjacent fluid passing port passing the same fluid as the vent and/or at least part of one end of a drain pipe formed of a lower tube sheet part (a lower cover part in the case of a spiral heat exchanger) and the other end thereof connected outside the heat exchanger to an immediately adjacent fluid passing port passing the same fluid as the drain.

Abstract: The invention concerns a heat exchanger with a large number of U-shaped tubes (3), preferably brought together to form at least one tubular bundle and arranged in a housing 2, and several partitions (4) subdividing the housing (2) into separate sections (5). For the formation of a heat exchanger which has a comparatively high efficiency even with increasing operation time, a heat exchanger is proposed in the invention that is characterized by at least one venting tube (6) that preferably extends through all sections (5) of the housing (2) and that has a number of venting holes (15) formed transversely to the longitudinal extension (14) of the tube.

Abstract: This invention teaches how to reduce the copper content of a commercially available, all-copper, double-wall-vented, coil & tube Gravity Film Heat Exchangers (“GFX”) developed for the GFX™ system of U.S. Pat. No. 4,619,311. For example, a GFX+™ equivalent of a residential Model G3-60 GFX can be made using 71% less copper. Such significant copper-savings, with comparable heat transfer coefficient (“U”), effectiveness and coil pressure drop, is achieved by improvements in innovations disclosed in Provisional Patent Application 60/709,889 (Filing date: Aug. 22, 2005). Unlike conventional, single and multi-coil GFX's currently produced by several manufacturers, the present invention enables the use of a variety of metal and/or plastic components to achieve either single or vented-double-wall construction and lower manufacturing costs. In fact, higher U-values can be achieved by increasing the potable-water pressure drop of a GFX+ equivalent of any coil & tube GFX.

Abstract: A tank for a radiator has an integral connecting member between the tank and the radiator. The integral connecting member is used to connect both a filing port and a ventilation port. The filling port is utilized for adding a liquid to the radiator and the ventilation port is utilized for removing gas from the radiator.

Abstract: A heat exchanger, comprising a shell designed as a pressure vessel, provided with shell-sided supply and discharge means with which the shell can be flowed through with a first medium under pressure. The heat exchanger further comprises a nest of tubes extending at least partly within the shell, provided with tube-sided supply and discharge means with which the tubes from the nest can be flowed through with a second medium in heat exchanging contact with the first medium under pressure. The individual tubes of the nest are each included with a supply and a discharge side in tube bores extending substantially transversely to the plane of a tube plate included in the shell. The heat exchanger has the special feature that the tubes are connected with the tube-sided supply and discharge means via connecting channels located in the plane of the tube plate and crossing the tube holes.

Abstract: An apparatus and a method for inhibiting metal dusting corrosion of a tubesheet inside a shell-and-tube heat exchanger having at least one exit nozzle for transmitting at least one process fluid from the shell-and-tube heat exchanger include and use: an isolation baffle disposed inside the shell-and-tube heat exchanger at a location between a first exit nozzle and the tubesheet, whereby an isolated space exists between the tubesheet and the isolation baffle; and a means for purging the isolated space with a purging fluid.

Abstract: An apparatus and a method for inhibiting metal dusting corrosion of a tubesheet inside a shell-and-tube heat exchanger having at least one exit nozzle for transmitting at least one process fluid from the shell-and-tube heat exchanger include and use: an isolation baffle disposed inside the shell-and-tube heat exchanger at a location between a first exit nozzle and the tubesheet, whereby an isolated space exists between the tubesheet and the isolation baffle; and a means for purging the isolated space with a purging fluid.

Abstract: A decorative radiator is composed of two panels: a front panel, made of a synthetic material, with pre-formed canals, and a back panel made of a heat-conductive material, and provided with cooling ribs.

Abstract: A self-piercing radiator drain valve which is implemented in a radiator requiring the coolant therein to be drained, particularly a radiator having no integrated drain valve. A radiator foot has a blind bore. A self-piercing valve body including a piercing tip and a resilient seal is threadingly driven into the blind bore to cause the piercing tip to penetrate the bore end wall and enter into a coolant reservoir tank, thereby providing a valve orifice for draining the tank. The seal provides coolant tight sealing with respect to the valve orifice for the remaining life of the radiator. At any time in the future, coolant draining and refilling can again be performed by unthreading and then rethreading the self-piercing valve with respect to the blind bore, as recounted.

Abstract: The present invention is a system for managing heat stress by both controlling the core body temperature of an individual and facilitating hydration. The system provides cooling to an individual through means of a liquid coolant such as water which is circulated by a pump through a heat exchanger to a heat exchange garment. The liquid coolant passes through the heat exchange garment where it extracts heat, increasing in temperature as a result of heat removed from the individual wearing the garment. The liquid coolant is then returned to the heat exchanger where it is again cooled. The cycle is then repeated. A drinking outlet provides a means for hydrating the wearer.

Abstract: A heat exchanger (10) having a heat exchanger drain assembly (28) comprising a manifold (12) for storing fluid. A drain port (20) is integrally formed with the manifold (12) and is in selective fluid communication with the reservoir (36) for selectively draining the fluid from the manifold (12). A plug (32) is disposed within the drain port (20) for preventing fluid from draining from the manifold (12). The plug (32) is removable from the drain port ((20) for allowing fluid to drain from the manifold (12). A frangible wall (40) is formed between the drain port (20) and the reservoir (36) to close the drain port (20) and create a non-functional drain port (20), thereby preventing fluid communication between the drain port (20) and the reservoir (36). The frangible wall (40) is fracturable to provide the fluid communication between the drain port (20) and the reservoir (36) for draining the fluid from the tank (12).

Abstract: A passive fan blade for a cooling package for use in an agricultural combine comprises a generally rectangular member having an axis, a central mounting area and two opposed legs, each leg having a middle region, a leading region and a trailing region, the leading and trailing regions being angled toward the downstream direction of intended air flow. The trailing regions increase in width in proportion to distance from the axis, while the leading regions decrease in width in proportion to distance from the axis, whereby the member is impelled to rotate in the direction of the leading edges when air flows past the member. In an assembly, the passive fan blade is mounted via a bearing assembly and mounting hardware onto a hub connected to a bracket. In a cooling package, the passive fan blade assembly is mounted on a frame in close proximity to a face of a radiator or a charge air cooler to provide turbulence thereby minimizing accumulation of chaff, dust and debris in order to maintain cooling efficiency.