Abstract: An embodiment of the present invention provides an air conditioning system located upstream of the inlet system for a gas turbine. The air conditioning system may include at least one conditioning module for adjusting the temperature of the airstream. The at least one conditioning module may have a plurality of forms including at least one of the following systems: a chiller, an evaporative cooler; a spray cooler, or combinations thereof. The specific form of the at least one conditioning module may be determined in part the configuration of the gas turbine.

Abstract: A valve assembly (1) comprising an inlet opening, a distributor and an outlet part comprising at least two outlet openings. The distributor comprises an inlet part (5) fluidly connected to the inlet opening, and is arranged to distribute fluid medium received from the inlet opening to at least two parallel flow paths, preferably of a heat exchanger (3). The valve assembly (1) further comprises a first valve part and a second valve part arranged movable relative to each other in such a manner that the mutual position of the valve parts determines the fluid flow from the inlet opening to each of the outlet openings of the outlet part. Finally, the valve assembly (1) comprises a header (2) forming an integral part of the valve assembly (1).

Abstract: A heat exchanger system through which a liquid can flow, including a heat exchanger including a liquid inlet and a liquid outlet, a bypass valve including a liquid inlet and a liquid outlet, and a self-cleaning filter including a liquid inlet and two liquid outlets, one being an outlet for filtered liquid and one being an outlet for non-filtered liquid. The outlet for filtered liquid is connected to the inlet of the exchanger and the outlet for non-filtered liquid is connected to the inlet of the valve. The outlet of the heat exchanger is connected downstream of the outlet of the valve. A fuel circuit of an airplane jet engine can include such a system.

Abstract: Modular battery system with at least two battery modules (114, 115), wherein each battery module comprises a cooling member (120), through which a coolant (121) at least partially flows, and a battery cell (122), wherein the battery cell (122) is disposed at the cooling member (120) such that a heat-conducting contact is set up between the battery cell and the cooling member and a coolant supply is provided by way of a coolant line (123) for distributing the coolant at the cooling member (120) or for draining the coolant from the cooling member, wherein the coolant line comprises coolant line modules that can be connected together and that form the coolant line at least partially, and wherein a diverting unit (134) is provided in the coolant line for adjusting the flow length of the coolant in the coolant supply to divert the flow direction of the coolant in the coolant line, and the coolant line comprises two flow channels (126, 127) at least in a longitudinal section, the coolant being fed substantially in

Abstract: A constructional unit for a heat exchanging device that includes at least one housing in which a gaseous medium is at least partially guided on a predetermined path, an inlet device for the gaseous medium, at least one first heat exchanging device, at least one second heat exchanging device, at least one controller that influences the direction of flow of the gaseous medium in at least some sections and that can be adjusted to at least two different positions, and an outlet device for the gaseous medium. In at least one first position of the first controller, substantially no portions of the gaseous medium are guided through the first heat exchanging device.

Abstract: A vehicular air conditioner includes a housing having a rear seat discharge passage for supplying mixed air to rear seats in a vehicle and a plurality of dividing ribs disposed in a face outlet which is open upwardly in the housing. Each of the dividing ribs has a communication path defined therein in the longitudinal direction thereof, the communication path being concave in confronting relation to the interior of the housing. Mixed air produced in a mixing portion in the housing is supplied from the face outlet to front seats in the vehicle. Part of the mixed air is supplied through the communication paths to the rear seat discharge passage, from which the mixed air is supplied to the rear seats.

Abstract: Cooled air introduced from an evaporator through a first passage in a housing is divided into laminar flows by a guide structure disposed on an air mixing door. The direction of flow of the cooled air is changed upwardly by guide walls of the guide structure and is further changed upwardly by first walls of the guide structure, after which the cooled air is introduced into a mixer. Heated air introduced from a heater core through a third passage is mixed with the cooled air in the mixer. The mixed air is delivered from a face discharge outlet, a defroster discharge outlet, or a foot discharge outlet into a passenger compartment.

Abstract: A fluid heating system configured to regulate a temperature of a fluid within a fluid receptacle having a fluid reservoir includes a processing unit, at least one fluid temperature sensor in electrical communication with the processing unit, and a heating element in electrical communication with the processing unit. The at least one fluid temperature sensor is configured to detect a temperature of one or both of the fluid receptacle and/or fluid retained within the fluid receptacle. The processing unit selectively activates and deactivates the heating element to regulate the temperature of the fluid within the fluid receptacle.

Abstract: A cooking medium heating system includes a cooking vessel for holding a cooking medium, at least one heat transfer tube for transferring heat generated by combustion to the cooking medium, and a combustion gas eductor for venting combustion gas exhausted from a combustion gas exhaust opening. Each heat transfer tube includes a bottom wall, a pair of side walls, a top wall, and a combustion gas entry opening and a combustion gas exhaust opening formed therein at opposite ends thereof. The tubes may include at least one heat transfer fin and a combustion gas flow separator dividing the tube into two spaces between the separator and the pair of side walls. The combustion gas eductor includes a flue including a narrower, exhaust gas receiving end disposed adjacent to the combustion gas exhaust opening, a nozzle including a nozzle inlet and a nozzle outlet, and a blower.

Abstract: An automotive vehicle air conditioning system has air introduced into an air conditioning case. The introduced air is always discharged to both sides of a passenger compartment regardless of the air conditioner mode while the air conditioning system maintains the amount of air discharged through defrost openings in a defrost mode. Air leakage between both sides of a mode door and the air conditioning case is effectively prevented by a cover carried by the mode door without additional sealing to improve air conditioning performance.

Abstract: A method is provided for applying a cover layer (9) to a net structure (4) to be used for medical purposes, in particular a thrombosis filter. The net structure (4) is applied to a planar substrate (1) that covers openings (5) of the net structure on one side, wherein the openings (5) across the uncovered side are filled with a sacrificial material (7), in particular copper. The net structure (4) is lifted from the substrate (1). A cover layer (9) is deposited on the surface previously covered by the substrate, and the sacrificial material (7) is removed.

Abstract: The circulation main loop supplies the liquid coolant by means of the main pump to the cooling plate which cools the electronic element, and then, dissipates the heat by the main heat exchanger 20 to return the same to the reservoir tank. The circulation sub-loop supplies the liquid coolant by means of the sub-pump, and after dissipating the heat by the sub-heat exchanger, returns the same to the refrigerant tank. The controller controls as required the supply flow rate from the main pump and the sub-pump.

Abstract: The invention relates to a system which is used to cool at least one piece of motor vehicle equipment to a low temperature, comprising a heat transfer fluid circulation loop. According to the invention, a low-temperature heat exchanger (60) and at least one equipment exchanger (102) are mounted to the aforementioned circulation loop. The heat exchange surface of the equipment exchanger (102) is divided into at least first and second heat exchange sections (104,106). A first flow (Q<SB>1</SB>) of heat-transfer fluid passes through the first heat exchange section (104), while a second smaller flow (Q2) passes through the second section. The invention is suitable for motor vehicle heat exchangers.

Abstract: A heat exchanger structure of an automatic transmission stabilizing a temperature of oil is provided. A heat exchanger structure of an automatic transmission includes an automatic transmission, a first heat exchanger provided on an upstream side and a second heat exchanger provided on a downstream side, each capable of cooling oil ejected from the automatic transmission, and a thermo valve capable of supplying oil subject to heat exchange by at least one of first and second heat exchangers to the automatic transmission. When a temperature of the oil is relatively low, the thermo valve supplies oil passed through the first heat exchanger to the automatic transmission and shuts off a flow of oil from the second heat exchanger to the automatic transmission. When a temperature of the oil is relatively high, the thermo valve supplies oil passed through first and second heat exchangers to the automatic transmission.

Abstract: A method for controlling the pseudo-isothermicity of a chemical reaction in a respective reaction zone. (9) in which the use of heat exchangers (6) is foreseen having an operating heat exchange fluid flowing through them and in which heat exchange critical areas (9a) are identified, the method being distinguished by the fact that it reduces and controls, in the critical areas (9a) of the reaction zone, the value of the heat exchange coefficient between the operating fluid and the zone (9), through thermal insulation of the portions (6a, 6b) of such exchangers extending in such areas (9a).

Abstract: An atmospheric cooling tower apparatus includes a housing structure having an air inlet and an air outlet, a first evaporative heat transfer media disposed in the housing, and a closed coil heat transfer media disposed in the housing. A water distribution assembly is disposed above the evaporative heat transfer media and configured to distribute water onto the evaporative fill heat transfer fill media. A collection basin is disposed beneath the evaporative heat transfer media configured to collect water that has passed through the evaporative heat transfer media. A first control valve controls an inflow of water to supply water to one or both of the evaporative heat transfer media and the closed coil heat transfer media. The closed coil heat transfer media and the evaporative heat transfer media are disposed laterally next to each other.

Abstract: A heat collector includes a heat absorption surface, an opposite heat focus surface and one or more surrounding sides. A matrix of the heat collector is a thermally conductive material. There is a plurality of adiabatic pores mixed within the matrix. A relative concentration distribution of the adiabatic pores increases from the heat absorption surface to the heat focus surface, and decreases from the surrounding sides to a center of the heat collector. The shape of the heat collector can be rectangular, cylindrical, prismatic, plate-shaped, square, or polyhedral. The heat collector can draw heat generated from electrical components, and collect the generated heat for reuse in order to enhance energy efficiency.

Abstract: The present invention relates to a heat exchanger which can suitably regulate the quantity, the feeding position or the feeding order of heat exchange medium fed into tubes to adjust heat exchange performance according to cooling and heating load. The heat exchanger comprises a plurality of tubes placed at least one header, each tube having both ends fixed to the header, medium-distributing means installed at the header for feeding heat exchange medium to the specific tubes, a tank placed over the medium-distributing means, the tank having a medium-inlet pipe, a medium-outlet pipe and distribution passages for feeding heat exchange medium to specific regions of the medium-distributing means, and medium-regulating means installed at the tank and operated in response to a control signal for adjusting the feed of the heat exchange medium.

Abstract: The present invention provides a device for cleaning tubes, in particular the internal surfaces of tubes in heat exchange systems. The device comprises a mass (2) with an optionally provided central through-hole (10) disposed thereon, and optionally provided a plurality of protrusions (20, 21) mounted and/or moulded on the mass (2). The through-hole (10) is preferably of a conical shape-like configuration. A plurality of first protrusions (20) is disposed in a fin-like arrangement on the mass (2). A plurality of second protrusions (21) is disposed in a spiral arrangement on the mass (2), and the lengths of the second protrusions (21) are relatively longer than the length of the first protrusions (20). The mass may consist of an asymmetrically positioned weighted core (15) of different weights and sizes to provide a variety of relative density to the device and to serve as a geometrical manipulation to impart rotational momentum and random dynamic motion to the device.

Abstract: One embodiment of the present invention is an apparatus useful to control temperature of a device that includes: (a) a heat transfer apparatus; (b) a combined path to the heat transfer apparatus; (c) a first path maintained at a first temperature and connected to the combined path; (d) a second path maintained at a second temperature and connected to the combined path; (e) a third path connected to the combined path; (f) a pump assembly operable to circulate thermal transfer fluid: (i) from the heat transfer apparatus, (ii) through one or more of the first, second and third paths, (iii) from the one or more of the first, second and third paths, through the combined path, and (iv) from the combined path, to and through the heat transfer apparatus; and (g) a valve assembly operable to cause predetermined amounts of thermal transfer fluid to flow into one or more of the first, second, and third paths, thereby controlling the temperature.

Abstract: Various methods and devices are provided for heating, cooling, and humidifying a space using a steam-based HVAC system having a steam source, at least one radiator located in a space to be heated or humidified, and a steam and condensate transfer apparatus extending between the steam source and the radiator. The steam and condensate transfer apparatus can have an inner tube configured for transferring steam disposed within an outer tube configured for transferring condensate and the inner tube can be centered within the outer tube such that the outer tube forms an annulus around the inner tube. The tube-in-tube conduit system or double-tube conduit system can take the form of Lego®-like components that can be fitted together to form the structure needed to deliver steam to light-weight flat-panel radiators located within all areas to be heated and/or humidified.

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 relates to a constructional unit for a heat exchanging device, which comprises at least one housing (7) in which a gaseous medium is at least partially guided on a predetermined path, an inlet device (23) for gaseous medium, at least one first heat exchanging device (3), at least one second heat exchanging device (4), at least one controller (9) that influences the direction of flow of the gaseous medium in at least some sections and that can be adjusted to at least two different positions, and an outlet device (13, 14, 15, 16, 18) for the gaseous medium. The invention is characterized in that in at least one first position of the first controller (9) substantially no portions of the gaseous medium are guided through the first heat exchanging device (3).

Abstract: A heat medium distributor for an air inlet system having multiple heat exchangers includes a box-like housing, which is divided by a dividing wall into a first flow chamber, which is used as the forward collection pipe, and a second flow chamber, which is used as the return collection pipe. For each heat exchanger to be connected, a forward connection nozzle branches off the first flow chamber and for each heat exchanger to be connected, a return connection nozzle opens into the second flow chamber. The arrangement of the connection nozzles is such that all flow paths of the heat medium through the various heat exchangers and the distributor are of equal length. The heat medium distributor replaces traditional heat medium distributors which are produced by welding together individual pieces of pipe, and which are structurally relatively large and therefore expensive, and in general cannot be housed in the housing of the air inlet system.

Abstract: Method for carrying out in continuous, under so-called pseudo-isothermal conditions and in a predetermined reaction environment, such as a catalytic bed, a selected chemical reaction, comprising the steps of providing in the reaction environment at least one heat exchanger fed with a first flow of a heat exchange operating fluid at a respective predetermined inlet temperature, the fluid passing through at least one heat exchanger according to a respective inlet/outlet path, which method also provides feeding into at least one heat exchanger and at one or more intermediate positions of said path, a second flow of operating fluid having a respective predetermined inlet temperature.

Abstract: A heat exchanger comprises a housing jacket and tube segments disposed concentrically inside the housing jacket. Between two receiving plates, closing the housing jacket on its face ends, the tube segments embody heating chambers and product chambers. While the product to be heated flows in a meandering course through the heat exchanger, the heating medium flows through the heat exchanger over short paths from a medium inlet stub, in the direction of a medium outlet stub. The heat exchanger of the invention is distinguished by a relatively simple construction and is especially suitable for compositions in the candy industry, using steam as the heating medium.

Abstract: A heat exchanger (10) comprises a housing jacket (11) and tube segments (14-20) disposed concentrically inside the housing jacket (11). Between two receiving plates (12, 13), closing the housing jacket (11) on its face ends, the tube segments (14-20) embody heating chambers (21-24) and product chambers (42-45). While the product to be heated flows in a meandering course through the heat exchanger (10), the heating medium flows through the heat exchanger (10) over short paths from a medium inlet stub (51), in the direction of a medium outlet stub (52). The heat exchanger (10) of the invention is distinguished by a relatively simple construction and is especially suitable for compositions in the candy industry, using steam as the heating medium.

Abstract: An exhaust gas heat exchanger comprising an external shell (20) extending between two tube plates (30, 31) and defining a coolant chamber; internal tubes (38) forming exhaust gas passages which extend between the tube plates (30, 31); an exhaust gas manifold divided by a baffle plate (29) into first and second chambers (26, 28) with an exhaust gas inlet (25) and outlet (27) respectively. The baffle plate (29) is provided with a valve (51) which can be operated between an open position, in which exhaust gas flows along the cooling tubes (38), and a closed position, in which exhaust gas is diverted directly from the first chamber (26) to the second chamber (28).

Abstract: A heat exchanger has a core provided with passages for a liquid to keep cool and passages for a cooling medium, a first collection tank for supplying the liquid, a second collection tank for withdrawing the liquid, at least one third collection tank, the core being divided into at least two sections through which the liquid successively flows and which are interconnected by the at least one third collection tank, one of the sections being connected with the first collection tank, while the other of the sections being connected with the second collection tank, a bypass line connected with the third collection tank and in parallel with the other sections, and structure for activating and deactivating the bypass lines.

Abstract: A heat exchanger has a plurality of fluidically parallel first layers which define first heat exchanger ducts through which a first medium is capable of flowing, and in each case has a second layer between the two first layers. The respective second layer is in thermal contact with the two adjacent first layers and defines at least one second heat exchanger duct through which a second medium is capable of flowing in parallel. The respective second layer comprises two fluidically parallel layer plies. A controllable supply of the second medium to the one and/or the other layer ply in each case is provided. Such a heat exchanger can be used, in particular, as an evaporator with an integrated starting and main evaporator part, and particularly as an evaporator in a reforming plant of a fuel-cell vehicle.

Abstract: A method and apparatus dissipates heat generated by an electronic device. The apparatus includes a channel structure that is in thermal communication with heat generated by the electronic device. The apparatus further includes a pump array operative to advance fluid within the channel structure. In addition, the apparatus includes a baffle array positionable in relation to the channel structure in a first group position and a second group position, wherein fluid advancing within the channel structure is diverted to flow (i) in a first flow path defined in the channel structure when the baffle array is positioned in the first group position, and (ii) in a second flow path defined in the channel structure when the baffle array is positioned in the second group position.

Abstract: A heat exchanger includes a flow passage formed by stacking a plurality of laminated plates, cooling fins installed between the plates, and a tank part prepared on top of the plates and connected to a coolant inlet and a coolant outlet. The tank part has a bypass means for allowing the coolant in a gas state to move toward the coolant outlet without returning to the flow passage.

Abstract: A heat exchanger for use in a sulphuric acid manufacturing plant to effect heat transfer between desired gas streams selected from air, sulphur dioxide and sulphur trioxide. The exchanger provides for hot or cold split flow gas streams through the exchanger shell with either mixing or splitting into two or more streams to provide for reduced condensible material condensation, corrosion, metal thermal differential stress and capital equipment cost. A preferred exchanger is used in combination with a sulphur burning furnace to provide an improved preheater.

Abstract: A liquid distributor for distributing liquid over the heat transfer surface of an evaporator includes a channel array including one or more supply channels and downwardly deviating distribution channels. Each distribution channel has a step-shaped expansion located downstream with respect to the supply channel and connecting therewith via a sharp point, restricting the liquid suction created in the distribution channel. Sharp points provided in the supply channel or channels further restrict the liquid suction.

Abstract: Hot water is sprayed to fillers arranged immediately under a hot water vessel through spray ports opened on a lower surface of the hot water vessel. The hot water flowing down along the fillers is cooled through direct contact with ambient air. The cooling tower includes fillers partitioned alternately into permanent wet and wet-dry changeover regions which are mutually isolated for flow passages of the ambient air and spray pipes provided on the lower surface of the hot water vessel exclusively for the wet-dry changeover regions such that the hot water can be sprayed to the wet-dry changeover regions separately from the permanent wet regions. The hot water vessel is supported by the spray pipes. The spray ports of the hot water vessel is communicated only with the permanent wet regions.

Abstract: A new tank container cooling system for preventing tank containers, especially bulk fuel storage containers, from overheating. The inventive device includes a main conduit fluidly connected to a fluid reservoir. At least one delivery conduit is in fluid communication with the main conduit to permit passage of fluid from the fluid reservoir to the delivery conduit. The delivery conduit is generally ring shaped and has a plurality of outflow nozzles. The delivery conduit is adapted for mounting on a storage container such that fluid passing out of the output nozzles flows on the storage container.

Abstract: A heat exchanger for cooling and/or dehumidifying a stream of air which eliminates the need for a large air diffusing plenum chamber. Heat conducting channel walls serve as the heat exchange surface for precooling and reheating air during the dehumidification process. The cooling conduits laterally intersect the airflow channels in order to force cooling to occur both in the intake and exhaust airflow channels, and the airflow is redirected 180.degree. in a small plenum chamber located at an end of the channels adjacent the cooling conduits. Adjustable dampers may be added for additional control of airflow in and out of intake and exhaust ports for the purpose of regulating the cooling and dehumidifying processes.

Abstract: The present invention relates to a cross flow type cooling tower with which it is possible to prevent emission of white vapor in cold weather. In order to accomplish the above object, the cooling tower of the present invention is constructed of heat exchange units each of which having plates arranged vertically and parallel from each other so as to form passages therebetween, which are separated into wet air passages and switchable air passages capable of switching from dry air passages and wet air passages; a water bath divided into upper and lower baths by a partition plate with holes, the upper bath is provided with spray nozzles for spraying water into the switchable passages, the lower bath provided with spray nozzles for spraying water into the wet passages.When the weather is warm, hot water is supplied into the upper bath, and both the upper and lower baths are filled with water and cooling is performed in every passage.

Abstract: An air conditioner comprises a heat exchanger for conducting refrigerant in heat exchanging relationship with an air flow, and a blower for drawing air through the heat exchanger. An adjustable flow distributing plate is disposed between the heat exchanger and blower and is movable by a motor to various positions for controlling the relative air flows through respective portions of the heat exchanger. Temperature sensors are connected to the heat exchanger for detecting the refrigerant temperature at various regions of the heat exchanger. The adjustable plate is positioned in a desired position in response to the detected refrigerant temperatures for equalizing the refrigerant temperatures in the regions of the heat exchanger.

Abstract: The present invention relates to a diagnostic system for use in a network control system. The diagnostic system is preferably utilized to analyze VAV box performance in an environmental control system such as a network facilities management system. The diagnostic system advantageously records temperature, airflow, and actuator position data in the controller associated with the VAV box. Such a system allows person to analyze VAV boxes and controller performance over a particular timely period and the lifetime of the system. Box and damper warnings may be provided by the diagnostic system when the box or damper is operating below particular performance levels. Preferably, the diagnostic system formats the air flow actuator positions and temperature data so that it can be displayed for graphing. The diagnostic data is advantageously stored in the individual controllers.

Abstract: The invention relates to a discharge system for combustion gases of a gas turbine or the like, whereby one end of the discharge pipe is connected to the gas turbine or the like, whilst the other end of the discharge pipe is connected to a heat exchanger. A branch pipe, which extends transversely to the discharge pipe, is connected to said discharge pipe. A valve mechanism is disposed near the connection of the branch pipe to the discharge pipe, which valve mechanism is pivotable between a first position, in which the end of the branch pipe connecting to the discharge pipe is closed, and a second position, in which the discharge pipe is closed downstream of the connection of the branch pipe to the discharge pipe. At least one curved guide vane is provided, which, in the second position of the valve, is located upstream of the valve mechanism, at least partially within the discharge pipe, and which extends downstream from its upstream edge, in the direction of the branch pipe.

Abstract: The present invention relates to a diagnostic system for use in a network control system. The diagnostic system is preferably utilized to analyze VAV box performance in an environmental control system such as a network facilities management system. The diagnostic system advantageously allows the serviceperson to perform diagnostic tests on VAV boxes from a remote location. Flat box warnings, starved box warnings, box excessive damper hysteresis warnings, oversized box warnings, damper stroke out of bounds warnings, as well as other box and damper warnings may be provided by the diagnostic system. Preferably, the diagnostic system formats the air flow data so that it can be displayed for graphing. The diagnostic system causes individual controls to adjust the damper positions. Air flow parameters for each position are communicated to the remote location.

Abstract: An improved gas flow diverter is provided, which includes a rotatably mounted diverter blade, a rotatably mounted turning vane assembly, a drive shaft adapted for receiving torque from a drive mechanism, and a toggle assembly, including a pair of toggle joints, mounted on the drive shaft and linked to the diverter blade and turning vane assembly. The improved construction of the gas flow diverter allows dependent synchronous rotation of the diverter blade and turning vane assembly.

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: Overall length of LED print bars arranged in a single pass printing system is controlled by controlling the operating temperature of the LED arrays forming the light emitting portion of the print bar. Rather than trying to maintain the arrays at some predetermined temperature, the array temperatures are allowed to vary over a predetermined range but within this range, the arrays are all at the same temperature. This is accomplished by mounting the arrays on a common subframe which is adapted to circulate a cooling medium through each of the arrays in parallel rather than in series. Thus, each array is cooled at the same rate and will attain the same equilibrium temperature, thus ensuring that registration will be accomplished within each single pass operation.

Abstract: The invention relates to a wort boiler apparatus comprising a wort boiler vessel and at least one separate heating circuit external of the boiler vessel and including a heat exchanger for heating or boiling the wort, the heat exchanger comprising an arrangement of heat exchanger pipes for passing the wort through the heat exchanger. The object of the invention is to provide a heat exchanger adapted to be adjusted to different evaporation values as required for making different types of beer. To attain this object, the invention provides that the arrangement of heat exchanger pipes includes pipe connections and valves in an arrangement permitting the wort to be passed through the heat exchanger along flowpaths of different lengths.

Abstract: A plant having a combustion chamber can employ at least one heat pipe. The heat pipe is mounted to exchange heat between flue gas in a flue gas path and combustion air in a combustion air path. A protection system has a dual passage for separately conducting the flue gas and the combustion gas. The dual passage has a wall separating the flue gas path from the combustion air path. The heat pipe is mounted through the wall. A sensor is mounted about the heat pipe for providing a temperature signal signifying the temperature at the heat pipe. A damper is coupled to the sensor and communicates with the dual passage for mixing relatively cooler air with the flue gas in the dual passage, upstream of the heat pipe, in response to the temperature signal violating a predetermined limit.

Abstract: A duct leading to a bypass and a duct leading to a heat exchanger are arranged at the output side of the gas turbine. The two ducts can be closed alternately by flaps. Pivotable guide plates are arranged in the branching area of the two ducts. The guide plates are pivoted by linkages connected to the flaps in the duct leading to the heat exchanger, so that, when the flaps in the bypass are open, the guide plates are inclined relative to the flow of combustion gases and deflect the flow into the duct leading to the bypass. When the flaps in the duct leading to the bypass are closed, the guide plates are pivoted to extend parallel to the flow of combustion gases. In this position, the guide plates do not provide any resistance to the flow of combustion gases to the heat exchanger.

Abstract: A heat exchanger suitable for placing air and cold hydrogen in heat exchanger relationship with each other comprises two concentric annular arrays of header tubes, all the header tubes in the radially outer array being in flow communication with a first manifold while half of the header tubes in the radially inner array are in flow communication with a second manifold and the remainder are in flow communication with a third manifold. Heat exchange pipes interconnect the various header tubes and air flows over those pipes. Various valves and pipes are provided and are operable to ensure that the heat exchanger functions in two modes of operation; a first in which cold hydrogen flows through all the heat exchange pipes in a single direction and a second in which the cold hydrogen flows through alternate heat exchange pipes in the opposite direction.

Abstract: In order to create an economic two-stage heat exchanger system which is capable of cooling cracked gas from short-term splitting furnaces, which is capable of flexible operation utilizing changeable charging stock, the two stages of the heat exchanger are integrated in one device, in order to avoid the necessity of delivering the cracked gas to a second stage via long, hot pipelines. In addition, the system has the capability of switching the heat exchanger plant over to a single-stage operation.