Abstract: A multiple tube bundle heat exchanger includes axially opposite tube plates, a housing, and a plurality of tube bundles disposed between the tube plates. Each of the tube bundles is an independent tube bundle subassembly forming an integral unit having at least one heat exchanger tube with two axial tube ends. The subassembly is made from the exchanger tube and respective tube plates fastened to the two axial tube ends. The housing has a casing part defining a interior and having two axial housing ends with flanges, removable head pieces respectively disposed at the two axial housing ends to be fastened to the flanges, and partitions subdividing the interior into chambers. The number of chambers corresponds to a number of tube bundles. Each of the chambers receives one of the tube bundles. The tube plates and head pieces respectively form seals, and the tube plates delimit distributor, collecting, and/or transfer chambers formed in the head pieces.

Abstract: An apparatus and method for cooling a work machine is disclosed. The apparatus has a fan element located inside an engine compartment of the work machine in a horizontal orientation. The fan element draws external air from above the work machine into the engine compartment. A deflector directs the air through a plurality of cooling cores which are radially spaced about the engine compartment and interspersed with a plurality of core spaces. The apparatus can be cleaned by spraying fluid from the outside through the plurality of cooling cores, causing any trapped debris to fall to the bottom of the engine compartment, where it can be removed through a cleanout.

Abstract: A heater head assembly for a multi-cylinder heat engine the stirling engine, such as a multi-cylinder Stirling engine, having a plurality of regenerators and cylinders. Each regenerator has a regenerator manifold and each cylinder has a cylinder manifold. First identical cast heater tubes connect the regenerator manifold to first heater tube openings in a heater head manifold. Second identical cast heater tubes connect second heater tube openings in the heater head manifold to the cylinder manifold. The first and second heater tubes are parallel with respect to each other and form a pair of partial concentric staggered arrays. The heater tubes are rotationally asymmetric, having fin sections with less surface area upstream than downstream and thicknesses which decrease radially away from the central passageways of said heater tubes.

Abstract: An air conditioning coil system having a first and a second outside tubing slab, a first and a second inside tubing slab, the inside tubing slabs positioned between the outside tubing slabs, a top of the first outside tubing slab contacting a top of the first inside tubing slab, a top of the second outside tubing slab contacting a top of the second inside tubing slab, and a bottom of the first inside tubing slab contacting a bottom of the second inside tubing slab, each tubing slab having a plurality of spaced-apart heat exchange fins, each outside tubing slab having a plurality of spaced-apart tubing rows extending through he plurality of heat exchange fins of the corresponding outside tubing slab, and each inside tubing slab having at least one tubing row extending through the plurality of heat exchange fins of the corresponding inside tubing slab.

Abstract: A recooling system for cooling water from a condenser of a steam power plant includes a number of cooling modules, each of which can be fed through a water-feed shaft allocated thereto. The water-feed shafts are connected to one another like communicating tubes and are connected through a common main cooling-water line to the condenser. Such a recooling system can be installed and operated in an especially simple manner.

Abstract: An assembly (oil cooler unit), under the state where first and second plates (130, 140) prevent a heat exchange core (110) from falling from a casing (120), is provisionally assembled, and this oil cooler unit is dipped in a flux to apply the flux. A seal surface plate (150) is then assembled to the second plate (140) and is brazed by heat-brazing in an inert gas atmosphere. Since a flux residue on the seal surface plate (150) can be drastically reduced in this manner after brazing is complete, the seal surface plate (150) can secure predetermined surface texture even after brazing is complete while the number of process steps necessary for applying the flux is reduced.

Abstract: For the sterilization of liquids (43) containing harmful microorganisms, or for the conditioning of mixtures of substances, a process and a heat exchanger (1) in the form of a tubular heat exchanger are used. The tube bundle (3) between the intake flange (2) and the outlet flange (4) is comprised of a number of tubes (18, 20) that are equal in length and that possess a narrow flow area and thin walls. These tubes, characterized as capillary tubes, are connected via distribution canals (15, 16) that are equal in length and similar in cross-section, to the central tube (12, 13) in the intake flange and in the outlet flange (2, 4). This causes the residence time distribution in the heat exchanger (1) to be held within very narrow limits, and causes the medium to be heated within fractions of a second to, for example, 140° C. or more, or less. This ensures a sterilization with the best possible preservation of thermolabile components, such as vitamins and proteins.

Abstract: A radiator utilizes laminar flow to more efficiently cool a liquid coursing through the radiator. The radiator spaces a pair of cores a sufficient distance apart to produce laminar flow between the cores.

Abstract: A steam generator which is both suitable for a horizontal mode of construction and offers the advantages of a continuous steam generator. According to the invention, a steam generator has at least one continuous heating surface disposed in a duct where hot gas circulates in a substantially horizontal direction. The heating surface consists of a plurality of parallel and almost vertical pipes which are used to circulate a fluid, and is configured in such a way that the fluid circulating in a tube heated to a greater temperature than the following tube of the same continuous heating surface has a higher flow rate than the fluid circulating in the following tube.

Abstract: A heat exchanger in which refrigerant flows has a first core portion disposed in a first air passage for exchanging heat with inside air and a second core portion for exchanging heat with outside air. The second core portion is disposed at a downstream side of the first core portion in a refrigerant flow direction. Accordingly, refrigerant exchanges heat with inside air, first, and then exchanges heat with outside air, a temperature of which is lower than that of inside air. Further, refrigerant flows to form an opposed flow with respect to an air flow direction in the respective first and second core portions. As a result, heating performance of the heat exchanger is improved.

Abstract: A two pass heat exchanger is provided. The first pass includes a plurality of tubes located in liquid refrigerant, when employed as an evaporator, whereby the liquid refrigerant draws heat from the water flowing through the tubes causing the water to be cooled and the liquid refrigerant to evaporate. The second pass is a single pipe which need not be located in the liquid refrigerant. The two pass heat exchanger can also be used as a condenser.

Abstract: A cooling coil arrangement for a cylindrical tower provides coverage of a larger area of the cylindrical footprint of a cooling tower to enable more economical usage of the vertical tower storage capacity for ice thermal storage, which coil arrangement has a plurality of coils arranged in multiply arranged planes with serpentine layouts of each tubing length generally having a vee-shaped layout in each plane between the longitudinal axis of the tower and the tower housing, which tubing lengths are provided in each sector of each plane normal to the axis and having a tubing length therein, and the manifolds coupling the tubing lengths to inlet and outlet ports for circulating coolant fluid through the tubing lengths to cool the phase change fluid in the cooling tower, and a plurality of the serpentine tubing lengths vertically aligned and preferably arranged with the tubing section of one u-shaped segment of a first tubing length in vertical alignment with the gap of another of the tubing lengths which provide

Abstract: A high pressure corrugated plate-type heat exchanger includes a plate pack consisting of stacked corrugated plates having seals between adjacent plates contained in a high pressure enclosure. The seals act as the primary arrangement for containing the high pressure fluids supplied to the spaces between the plates and the high pressure enclosure provides resistance to high pressures applied to the seals from the fluids in the spaces between the plates or in port holes extending through the plates. The high pressure seals comprise either a captive O-ring type seal or a welded joint between the plates, or combinations of both types of seal. In one embodiment, a compression block is inserted between the plate pack and the end of the high pressure enclosure to transfer pressure from the end of the enclosure to the plates of the plate pack and thereby compress resilient seals disposed between the plates to a desired degree.

Abstract: The invention provides an improved alkylation process and reactor apparatus. The invention utilizes a vessel containing a riser-reactor conduit, an acid settler and an acid cooler. Hydrocarbons are introduced beneath said riser-reactor conduit, mixed with acid catalyst, and passed generally upwards through the riser-reactor conduit to enter the acid settler. Within the acid settler, alkylate is separate from the acid catalyst and is removed from the vessel. Acid catalyst from the acid settler is cooled in the internal acid coolers and returned to the region beneath the riser-reactor conduit.

Abstract: There is provided an arrangement for mounting the top end of a heat exchange module to and between a pair of opposed support frame surfaces, the arrangement including an elongate transverse beam and a pair of end mounting assemblies. The elongate transverse beam is securable to the top end of the heat exchange module with the longitudinal extent of the transverse beam oriented in the direction from one opposed support frame surface toward the other opposed support frame surface. One longitudinal end of the transverse beam has a left hand overextension portion extending longitudinally beyond the portion of the transverse beam immediately therebelow and the other longitudinal end of the transverse beam having a right hand overextension portion extending longitudinally beyond the portion of the transverse beam immediately therebelow.

Abstract: An apparatus for exchanging heat between at least three fluids includes an elongate sealed chamber having at least two separate plate cores arranged inside the sealed chamber and means for supporting each of the plate cores inside the scaled chamber. Each of the plate cores are provided with circuits for two separate fluids, fluid inlet and outlet means for the respective circuits of the plate cores, and connecting means enabling fluid circulation between the plate cores.

Abstract: A device for distilling a liquid feed which includes a core pipe and a first fluid in a series of helically wound tubes or vanes employing the core pipe as a mandrel. The liquid to be distilled passes over a series of interstices which are created by the helically wound tubes or vanes and a distillate recovered as a consequence.

Abstract: A body heating/cooling apparatus comprising an enclosure (10) for raising or lowering the temperature of a fluid (22) prior to circulating the fluid (22) through a vest (55). The enclosure (10) has a first chamber (13) where the fluid (22) returning from the vest (55) is picked up by a pump (25) and recirculated through a second chamber (16). The vest (55) has an integrally formed channel (67) that passes through the vest (55) in serpentine fashion. The enclosure (10) may also be equipped with a module for also providing helmet cooling for racing car applications.

Abstract: Space and weight constraints on heat exchangers performing heat exchange operations between three or more fluids are eliminated in a structure including a plurality of plates (10, 12) arranged in a stack (13). Collars (36, 38) about openings (30, 32) the plate (10, 12), divide the spaces between the plates (10, 12) into two different types of spaces (44, 46). A connecting flange (50) with a tube (46) and a separator element (64) cooperates with holes (54) and (56) within the plates that (10, 12) to isolate certain of the spaces (44) from other of the spaces (44) providing a means for flowing different heat exchange fluid through different ones of the spaces (44) while flowing still another heat exchange fluid through the spaces (46), all in a single structure.

Abstract: Apparatus and processes related to thermal storage and exchange systems for use in buildings to selectively cool and/or heat a heat storage medium and cause said medium to reversibly pass between a liquid phase and a solid phase without requiring a complete discharge of a thermal reservoir between phase changes.

Abstract: A heat exchanger, preferably intended for air conditioning in a fan installation, comprises a corrugated plastic element built up of heat exchanger packs. One of the air flows passes laminarly and unbroken in vertical flow paths formed between strips that hold the individual elements apart from each other. The other air flow passes through channels formed in each element. The walls of the element are thin and the thinner the wall thickness the better the efficiency obtained.

Abstract: A modular radiator arrangement having first and second rows of spaced apart radiator core modules and air directing ducts provide a compact radiator arrangement. The air directing ducts are disposed in spaces between adjacent radiator core modules of the first row and about the radiator core modules of the second row located in alignment with the spaces of the first row of radiator core modules provides cooling air flow of substantially the same temperature to each of the first and second rows of radiator core modules.

Abstract: Disclosed is a heat exchanger for an indoor unit of an air conditioner being easier to make and having an improved efficiency of heat exchange by enlarging an area of the heat exchanger, which makes contact with air in a room. The heat exchanger for the indoor unit of the air conditioner comprises a first fin assembly for absorbing a heat from air in a room, a second fin assembly which is adjacent to an upper portion of the first fin assembly and spaced by a predetermined distance with respect to the first fin assembly, for absorbing a heat from air in the room, a plurality of refrigerant pipes which extend through the first fin assembly and the second fin assembly, for supplying a pathway for refrigerant, and a connecting member for connecting the first fin assembly and the second fin assembly with each other so that the second fin assembly is secured to the first fin assembly.

Abstract: The heat exchanger comprises at least one first sheet tubes and at least one second sheet of tubes, the sheets being suspended in a case. The two sheets are juxtaposed in a vertical plane, the first sheet of tubes connecting a first inlet fluid manifold disposed at the bottom and on one side of a case to an outlet manifold disposed in a central top portion of the case, and the second sheet of tubes connecting a second inlet fluid manifold disposed at the bottom and on one side of the case to the outlet manifold. Each sheet comprises first tubes which extend horizontally in the bottom portion of the case, second tubes which are connected to the first tubes and which extend vertically between the bottom portion of the case and the middle portion of the case, and bent third tubes which are connected to the second tubes and which extend between the middle portion of the case and the top portion of the case. This configuration makes it possible to obtain a large heat exchange area with a compact heat exchanger.

Abstract: A heat exchanging apparatus is capable of efficiently heat exchanging a large quantity of fluids and whose construction can be simplified. A heat exchanging flowpassage (10) is arranged internally of a heat exchanging vessel to and from which a liquefied nitrogen as a heat transfer medium is supplied and discharged. The heat exchanging flowpassage (10) has annular tubes (18) arranged in plural rows, the adjoining annular tubes (18) are communicated at plural locations by communicating tubes (19) at positions deviated in a peripheral direction, and tanks (20) and (21) are communicated with a supply port side and a discharge port side. A supply tube (11) is communicated with the tank (20), and a discharge pipe (12) is communicated with the tank (21).

Abstract: An otherwise conventional recovery boiler for burning black liquor requires less capital investment and takes up less space by constructing the economizers in a particular manner. At least first and second economizers are provided for preheating feed water utilizing flue gas from combustion of the black liquor. The economizers are positioned substantially side-by-side, in the width dimension of the recovery boiler furnace, and connected in such a way that flue gas leaving the first economizer passes in a substantially transverse horizontal direction and then through a substantially vertical intra-economizer flow channel into the second economizer. A boiler bank may be connected between the superheater section of the recovery boiler and the first economizer, and any number of economizers may be utilized.

Abstract: A modular air-to-air heat exchanger is provided in which heat exchanger cores are assembled in stacks from elemental core blocks that may be locked to a limited number of panels which form a variable size enclosure for the cores. Single and double width panels, half the height of the stacks, allow a staggering panel insertion which segregates crossing input and exhaust streams for an arbitrary configuration of cores.

Abstract: A contoured A-coil heat exchanger is provided which enhances cooling capacity of the heat exchanger by increasing the volume rate of airflow therethrough. The two slabs of the A-coil each have discrete upper and lower sections, with the upper section of each slab having a greater number of rows of tubes than the lower section thereof, so that the lower section of each slab is narrower than the corresponding upper section. Therefore, the condensate collecting channel of a drain pan used with the heat exchanger can be made commensurately narrower because the channel need only be wide enough to accommodate the lower sections with fewer tube rows than the upper sections. The narrower channel allows the area of the drain pan central opening to be larger for a given size drain pan, thereby increasing the volume rate of airflow through the central opening and through the heat exchanger.

Abstract: A heat exchanger (10) for extracting thermal energy from a process fluid, comprising a first group of at least one plate-fin heat exchange module (34a) and a second group of at least one plate-fin heat exchange module (34b). Each plate-fin heat exchange module (34) includes an inlet (72), an outlet (74) and a plurality of spaced-apart plates (60) for communicating a refrigerant fluid in a cross-direction to a process fluid. The modules (34) are sequenced alternately with one of the modules (34a) of the first group adjacent one of the modules (34b) of the second group. The modules (34) are disposed so that the refrigerant fluid flows in a first direction through the modules (34a) of the first group and flows in a second opposite direction through the modules (34b) of the second group. A supply header (38) connects to the inlets (72) of each heat exchange module (34) in parallel for communicating the refrigerant fluid from a supply to the heat exchange modules.

Abstract: The invention relates to a separation-type air conditioner capable of increasing the heat exchanging area of a compact indoor unit and of effecting high-performance heat exchange, and particularly employable as a high-performance yet compact indoor unit whose height is low. A front heat exchanger having a configuration in which an upper edge portion and a lower edge portion are respectively made to recede is disposed in an indoor unit. In addition, a rear heat exchanger separate from the front heat exchanger is disposed on the rear surface side of the front heat exchanger. Consequently, it is possible to increase the heat exchanging area in an indoor unit having the same height, and improve the heat exchanging capacity.

Abstract: A small-sized heat exchanger for separable air conditioner not only saving the electric power but also reducing the cost. The heat exchanger has tube banks provided on a predetermined upper section of the air conditioner main body. A plurality of heat exchanging fins are placed under the tube banks and connected to a plurality of heat transfer tubes. Both the tube banks and the heat transfer tubes are supported by a pair of guide plates placed on opposed sides of both the tube banks and the heat transfer tubes. The tube banks include a plurality of small diameter tubes and a plurality of distribution manifolds. The manifolds are connected to bundles of small diameter tubes respectively.

Abstract: A duplex heat exchanger comprises unit heat exchangers which have a plurality of tubes arranged parallel with each other and comprise fins each interposed between two adjacent ones of such tubes, opposite ends of each tube being connected to a pair of headers in fluid connection therewith. The unit heat exchangers are closely juxtaposed to each other fore and aft in a direction of air flow. Coolant circuits of said unit heat exchangers are connected either in series or in parallel with each other.

Abstract: A device for cooling a gas that forms deposits has an upright container through which the gas to be cooled flows. At least two heating surface units with at least one heating surface of a closed geometry are provided. The heating surface units are positioned within the upright container one atop the other. A cooling medium flows through the heating surface units. Each heating surface has coordinated therewith a beating device. The container has a support and an upper one of the heating surface units is supported at the support of the container. At least one array of connecting tubes for conveying the cooling medium is provided. The array of connecting tubes connects respectively a lower one of the heating surfaces units to an adjacent upper one of the heating surface units such that the cooling medium flows sequentially through the heating surface units.

Abstract: A heat exchanger for extracting thermal energy from a process fluid, comprising a first group of at least one plate-fin heat exchange module and a second group of at least one plate-fin heat exchange module. Each plate-fin heat exchange module includes an inlet, an outlet and a plurality of spaced-apart plates for communicating a refrigerant fluid in a cross-direction to a process fluid. The modules are sequenced alternately with one of the modules of the first group adjacent one of the modules of the second group. The modules are disposed so that the refrigerant fluid flows in a first direction through the modules of the first group and flows in a second opposite direction through the modules of the second group. A supply header connects to the inlets of each heat exchange module in parallel for communicating the refrigerant fluid from a supply to the heat exchange modules.

Abstract: The present invention includes fins that are juxtaposed at narrow intervals. One side of the fins serves as an upstream side, and the other side thereof serves as a downstream side. Heat exchange air passes through the fins. A bent portion is provided at a substantially middle portion of the fins in the longitudinal direction of the fins, and the fins are bent at the bent portion at a predetermined angle. Heat exchange pipes are provided to penetrate the fins and are arranged in an upstream-side front row and a downstream-side rear row. U-bend portions are provided to connect end portions of adjacent heat exchange pipes. Passageways for guiding a heat exchange medium are formed by the heat exchange pipes and U-bend portions.

Abstract: A vessel-type fluid cooling system includes an upper mixing chamber and a lower holding chamber, the chambers being separated by a transverse separating wall. One or more cooling tubes extend between the mixing chamber and the holding chamber, and cooling elements, such as fluid-cooled tubes, are located within each cooling tube. A heated fluid inlet provides heated fluid to the mixing chamber, and a cooled fluid outlet discharges cooled fluid from the holding chamber. Each cooling tube includes one or more inlets toward its upper end, and fluid is supplied from the mixing through the inlets to passages defined by the cooling tubes for cooling the fluid as the fluid flows downwardly through the cooling tubes. The cooled fluid is discharged into the holding chamber.

Abstract: A heat storage apparatus is disclosed providing a vertical tube bundle arrangement in a vessel containing a heat storage medium. The tube bundle is divided into modular sector-shaped units each having a radial distribution manifold at the bottom and top with each radial distribution manifold having a plurality of perpendicular secondary manifolds to which the heat exchange tubes are attached. The modular units are supported on radial beams which support the units by the secondary manifolds. Alternate means may be used to feed the fluid through the tubes.

Abstract: According to the present invention there is provided a small-sized thermosiphon free from deterioration in its cooling efficiency caused by pressure loss of a refrigerant and in which a two-phase flow of a fluid to be cooled is sure to be distributed uniformly. The thermosiphon includes a cooling cylinder 1 having a plurality of independent refrigerant tanks 2 formed by partition walls 1c which are disposed between fluid inlet port 1a and outlet port 1b inside the cylinder, and a plate fin type heat exchanger 50 extending inside the cylinder through the partition walls 1c hermetically sealably. Under this construction, it is not necessary to use pipes for the circulation of refrigerant C between the refrigerant tanks 2 and refrigerant circulation paths 54 in the heat exchanger 50, thus preventing the deterioration of the cooling efficiency caused by pressure loss of the refrigerant.

Abstract: Spacer supports are connected to a matrix of heat exchange tubes of a heat exchanger to maintain the heat exchange tubes in spaced relation and resist overheating by hot fluid flowing around the tubes and the spacer supports. The spacer supports are in the form of hollow tubular bodies in which the heat exchange tubes are supported in spaced relation. The heat exchange tubes communicate with the interior of the hollow bodies so that flow of a heatable fluid in the heat exchange tubes is conveyed through the hollow body to wet the interior thereof and cool the same.

Abstract: A forced air furnace (11) has a heat exchanger (35) with one or more tube pack assemblies (10). Each tube pack assembly (10) has a burner (21) situated to fire into a primary fire tube (30) which is mechanically connected through a transition cap (36) to a plurality of secondary tubes (37, 38, 39, 41) returning combustion products from the primary fire tube (30) to a collection manifold (24) at the intake end of a draft inducer assembly (23) for discharge of the combustion products to a flue. In the preferred embodiment, the transition cap (36) is connected to the primary fire tube (30) and to the secondary tubes (37, 38, 39, 41) by a mechanical interlock.

Abstract: A shell-and-tube heat exchanger with a tube sheet having partition grooves used to form joints with partition plates contained within the exchanger head. The partition plates define chambers within the head of the exchanger which direct the fluid through the exchanger tubes and which allow for the use of an unequal number of tubes per tube-side pass.

Abstract: A tubular type heat exchanger unit which utilizes upper inlet and outlet headers which are each series connected to at least three lower parallel headers by multiple elongated vertically-oriented tubes. The lower headers are connected together by a plurality of vertically-oriented U-shaped tubes provided in adjacent banks and rows within a thermally-insulated casing. The U-shaped tubes in each tube row are arranged in a staggered pattern relative to the tubes in the adjacent row. Preferably 4-12 lower headers each having a bank of 4-20 vertical tubes are provided. Such heat exchanger unit is enclosed within a thermally-insulated casing and is suitable for use as an economizer and superheater in heat recovery steam generators (HRSG).

Abstract: Device for heating a substance in through-flow, comprising a closed housing (1) and a number of straight channels (8) extending between two plate-shaped elements (2, 3), each provided with apertures (6, 7) in which the ends of the channels are mounted, and which are covered by a cover plate (9, 10) in which recesses (11, 12) are disposed, forming connections between the pairs of apertures (6, 7), while an aperture (18) is provided in a cover plate (10), which aperture runs through said cover plate and can be connected to the feed pipe (16) for the substance to be treated, and a valve element (19) is fitted in the cover plate (10), by means of which element the connection between the aperture (18) and the aperture (7) in the plate-shaped element lying upstream thereof can be blocked. A channel can be formed by a number of pipe sections running parallel to each other and each mounted in a member disposed in one of the apertures in the plate-shaped element.

Abstract: A compact heat exchanger for a fuel-fired heating furnace. The heat exchanger has a radiative heat transfer section including at least one firetube for containing flue gases as the air to be heated passes over the firetube and a convective section including a shell-and-tube heat transfer apparatus arranged to receive flue gases from the firetube in the shell region and the air to be heated after it passes over the firetube in the tubes.

Abstract: In a furnace wall heat-transfer pipe unit in a spiral wound-type boiler, for distributing gas-liquid double layer fluids from lower part spiral pipes to upper vertical pipes, a horizontal pipe is interposed between the spiral pipes and the vertical pipes and extends in a horizontal plane around the furnace wall. The gas-liquid double-layer fluids flow into the vertical pipes via the horizontal pipe extending around the furnace wall from the lower part spiral pipes. Uniform layers of the fluid flow into each vertical pipe so as to minimize an imbalance of fluid temperature at the outlet of the furnace.

Abstract: A thermal storage apparatus comprises a series of stacked heat exchange modules. Each module extends horizontally and comprises channels separated by corrugations. Each channel has underneath it a heat exchange fluid pipe through which a primary or secondary coolant circulates. An inlet pipe delivers the phase change medium, for example water, to the lower most module from which it circulates to the top of the apparatus. The modules are stacked by the wall of a module engaging a groove of the next module above it.

Abstract: A heat exchanger has a duct through which heated gases pass. A plurality of tube panels are within the duct and each panel includes a header from which a plurality of tubes extend. A pair of hangers support each tube panel to form space in the duct above and below the tube panel for maintenance access. Baffles restrict the flow of gases through these spaces. Each hanger has a bracket attached to the header of the tube panel with a rod pivotally coupled to the bracket and extending through an aperture in the roof of the duct. The hangers are connected to structural members on the exterior of the duct in a manner that maintains the tube panel in a fixed position during operation of the heat exchanger, while allowing movement of a panel within said duct for maintenance.

Abstract: A heat exchanger arrranged in a horizontally positioned container for carrying extremely hot gaseous or vapor media, a heat exchanger unit including a bank of tubes defined by tube walls, an inner port, a collector connected to the inlet port and connected to the tubes, first and second outlet ports, first and second outlet port ocllectors each outlet port collector being connected to the outlet ports and a bracket suspension connected to passages of the container for suspendedly supporting each of the inlet port and the outlet ports. The inlet and outlet ports each have a central axis, each central axis passing through a center of gravity of the portion of the heat exchanger unit connected to the associated port. The each of the heat exchanger units includes, the bank of tubes formed of tube walls, inlet ports being connected to the collector and the outlet ports being connected to each of the first and second outlet collectors.

Abstract: Circular heat exchangers have been used to increase the efficiency of engines by absorbing heat from the exhaust gases and transferring a portion of the exhaust heat to the intake air. The present heat exchanger is built-up from a plurality of preformed involute curved cells stacked in a circular array to provide flow passages and for the donor fluid and the recipient fluid respectively. The stacked cells are welded along a portion of their edges to secure them in the stacked circular array. Each of the cells have a plurality of corners with the core presenting corresponding corners after the cells are welded together. In order to reinforce the core against thermal stresses and forces generated by pressures of the fluids, circumferential welds are provided at each of the corners.

Abstract: In flue and water tube boilers provided with water tubes arranged in a combustion reaction zone or a convective heating zone, the values of L/D or H/D satisfy the following relationships:1.8.ltoreq.L/D.ltoreq.2.5 and1.2.ltoreq.H/D.ltoreq.1.7and the water tubes are disposed in an (aligned) in-line arrangement. L(mm) is the longitudinal pitch of the water tubes taken in the direction of gas flow, D(mm) is the outer diameter of the water tubes and H(mm) is the transverse pitch of the water tubes taken at right angles to the direction of gas flow.