Abstract: A fan unit for improved airflow within a display assembly is provided. Fans are provided at a housing which includes a rear wall defining a curved shape with peaks to accommodate one of the fans and a valley between adjacent ones of the fans. The fan units induce relatively laminar flow within certain portions of an airflow pathways extending with the display assembly and relatively turbulent flows in other portions of the display assembly when activated.

Abstract: An assembly for a turbine engine having an oil circuit. The oil circuit includes an air/oil heat exchanger, a primary bypass pipe connecting an intake of the air/oil heat exchanger to an outlet of the air/oil heat exchanger and surrounding the air/oil heat exchanger so as to exchange heat with the air/oil heat exchanger. The oil circuit further includes and a secondary bypass pipe of the primary pipe connecting the upstream end of the primary bypass pipe to the downstream end of the primary bypass pipe. The oil circuit also includes at least one valve for controlling the passage of the flow of oil into the primary and secondary bypass pipes and means for controlling the opening of said at least one valve for a temperature lower than a threshold temperature.

Abstract: A control apparatus according to the invention is applied to a heat exchanging system comprising a connection system for connecting an engine water passage for heat exchanging water for cooling an internal combustion engine and the heater water passage for the heat exchanging water for heating a heater core to each other. The apparatus activates the connection system to connect the engine water passage to the heater water passage when a temperature of the heat exchanging water circulating through the engine water passage, is equal to or higher than the temperature of the heat exchanging water circulating through the heater water passage, and an interior of a vehicle is requested to be warmed up.

Abstract: A control apparatus of a heat exchanging apparatus according to the invention executes a control for activating a connection system to connect an engine water passage to a heater water passage and then, executes a control for decreasing a heater pump duty ratio and a control for decreasing an engine pump duty ratio when the control for decreasing the heater pump duty ratio and the control for decreasing the engine pump duty ratio are requested to be executed in order to control a core flow rate to a requested core flow rate and an engine flow rate to a requested engine flow rate after the engine water passage is connected to the heater water passage by the connection system.

Abstract: A control apparatus of a heat exchanging system according to the invention executes a control for activating a connection system to connect an engine water passage to a heater water passage and a control for increasing an engine pump duty ratio, and then executes a control for decreasing a heater pump duty ratio when the control for decreasing the heater pump duty ratio and the control for increasing the engine pump duty ratio are requested to be executed in order to control a core flow rate to a requested core flow rate and an engine flow rate to a requested engine flow rate after the engine water passage is connected to the heater water passage by the connection system.

Abstract: A heat exchanger includes a heat exchanger core having two core sections, each core section having coolant flow passages. A mounting bracket is arranged between the core sections, being joined to each core section. A housing for the heat exchanger core includes multiple housing sections joined together to define an air flow path. The mounting bracket is secured between the multiple housing sections.

Abstract: An aircraft thermal control system includes a thermal control unit including an internal circuit, an evaporator and a condenser, the evaporator and the condenser being disposed in the internal circuit. The aircraft thermal control system further includes a cooling circuit which is thermally coupled to the evaporator of the thermal control unit, and a heating circuit which is thermally coupled to the condenser of the thermal control unit.

Abstract: A method for controlling the temperature in a polymerization reactor equipped with a cycle gas line for withdrawing reactor gas from the reactor, leading the reactor gas through a heat-exchanger, which is cooled by a cooling medium, which is conveyed in a cooling system through the heat-exchanger, and feeding the reactor gas back to the reactor by adjusting the temperature of the cooling medium entering the heat exchanger, wherein the temperature of the cooling medium entering the heat exchanger is controlled by adjusting the flow rate of the cooling medium in a part of the cooling system by a flow control system comprising two continuously operating flow control devices of different size, which are connected in parallel, a process for polymerizing olefins and a process for controlling the flow rate of a fluid medium.

Abstract: A temperature equalization system, including an installation, a heat equalizer disposed in a natural heat carrier and being made of a material of heat conduction to exchange heat with the natural heat carrier, a fluid transmission duct disposed between the heat equalizer and the installation and having a fluid contained therein for heat transmission, a pump connected in series with the fluid transmission duct for pumping the fluid, and a control means controlling an operation of temperature equalization system. The control means controls the pump to pump the fluid through the fluid transmission duct and an interior of the installation.

Abstract: A temperature equalization system, including an installation, a heat equalizer disposed in a natural heat carrier and being made of a material of heat conduction to exchange heat with the natural heat carrier, a fluid transmission duct disposed between the heat equalizer and the installation and having a fluid contained therein for heat transmission, a pump connected in series with the fluid transmission duct for pumping the fluid, and a control means controlling an operation of temperature equalization system. The control means controls the pump to pump the fluid through the fluid transmission duct and an interior of the installation with a periodical change of flowing direction.

Abstract: A circulating cooling system and a method for controlling the circulating cooling system are disclosed in this disclosure. Wherein, the circulating cooling system is divided into three parts: an internal cooling circulation device, a plate heat exchanger and an external cooling circulation device, wherein the internal cooling circulation device is adapted to perform circulating cooling on a heat-generating device; the plate heat exchanger is adapted to perform heat exchange between external cooling water in the external cooling circulation device and the internal cooling water in the internal cooling circulation device; the external cooling circulation device is adapted to cool the external cooling water. Also, the external cooling primary circulation pump, the cold accumulation water pool, the water-air plate-wing heat exchanger, the cold accumulation air cooler, the first valve and the second valve may be controlled, respectively.

Abstract: A temperature equalization system, including an installation, a heat equalizer disposed in a natural heat carrier and being made of a material of heat conduction, a relay heat equalizer, a first fluid transmission duct disposed between the relay heat equalizer and the installation and having a first fluid contained therein for heat transmission, a second fluid transmission duct disposed between the heat equalizer and the relay heat equalizer and having a second fluid contained therein for heat transmission, a pump and a relay pump respectively connected in series with the first and second fluid transmission ducts for pumping the first and second fluid, and a control means controlling the pump to pump the first fluid through the relay heat equalizer, the fluid transmission duct and an interior of the installation, and to pump the second fluid through the relay heat equalizer, the second fluid transmission duct and the heat equalizer.

Abstract: A heating system comprises a heater and a local heat exchange system in which the local heat exchange system comprises: a primary heat exchanger; a heat store having a secondary heat exchanger; a cold water inlet; and a hot water outlet, in which the local heat exchange system is remotely located from the heater, the primary heat exchanger and the heat store are arranged so as to be heated by the heater, and the primary and secondary heat exchangers are in fluid-flow communication with the cold water inlet and the hot water outlet.

Abstract: In association with a liquid flow through a heat exchanger situated to remove heat from electronic devices, a coolant flow control apparatus is provided. The coolant flow control apparatus comprises a first input channel for carrying liquid coolant to a first input of the heat exchanger; a flow control device positioned along a flow path that includes the first input channel, the flow control device, in response to a temperature of coolant proximate to the flow control device, is operable to enable or to prevent coolant flow along the first input channel into the heat exchanger; a second input channel for continuously carrying liquid coolant to a second input of the heat exchanger, during both times when the flow control device is enabling and is preventing the coolant flow along the first input channel into the heat exchanger; and an output channel for carrying coolant away from the heat exchanger.

Abstract: A temperature of only a part in a surface of a mounting table can be set to be higher than or lower than a set temperature of an entire surface of the mounting table. A main flow path 320 formed within the mounting table 200 to be arranged over the entire surface thereof; an auxiliary flow path 330 formed within the mounting table to be arranged in a part of the surface thereof; and a temperature control medium circulating unit that supplies and circulates a temperature control medium adjusted to have a set temperature into and through the main flow path, allows the temperature control medium to be branched, and supplies and circulates the branched temperature control medium into and through the auxiliary flow path after adjusting a temperature of the branched temperature control medium to be a temperature higher than or lower than the set temperature are provided.

Abstract: There are provided a divider that divides a cold aisle and a hot aisle in a chamber in which an information technology device is to be enclosed and a rectifier that is formed in a shape of a hollow tube and is provided so as to penetrate the divider. There are also provided a detector that is built into the rectifier and detects airflow passing through the rectifier, and a controller that controls an amount of air supplied to the cold aisle using detection results of the detector.

Abstract: A heat exchanger for a vehicle includes: a heat releasing unit that is stacked with a plurality of plates and that forms connection flow channels to intersect at the inside thereof to inject other working fluids and that exchanges a heat of working fluids that pass through the respective connection flow channels, a bypass unit that is formed in the heat releasing unit to form a plurality of inflow holes and exhaust holes that inject and exhaust the working fluids to the respective connection flow channels and that connects the inflow hole and the exhaust hole that is connected to one of the respective connection flow channels, and a valve unit that is mounted within the heat releasing unit to correspond to the inflow hole that forms the bypass unit and that is selectively opened or closed using a deformation force of bimetal that is deformed according to a temperature of a working fluid that is injected into the inside thereof to inject the working fluid into the heat releasing unit and the bypass unit.

Abstract: A valve can be incorporated as an integral part of the heat exchanger as a plug-in item that can be located anywhere desired between the inlet and outlet flow manifolds of the heat exchanger.

Abstract: An HV_ECU executes a program including: switching, if an operation is in an A/C intake mode and absolute value of temperature difference Thi?Tlo is larger than a predetermined value A and temperature Thi is smaller than a predetermined value B, the operation mode to a compartment intake mode; switching, if the operation is in the compartment intake mode, the compartment intake mode is requested to prevent increase in temperature difference, the absolute value of temperature difference Thi?Tlo is larger than a predetermined value A and temperature Thi is equal to or larger than the predetermined value B, the operation mode to an A/C intake mode; and executing a normal intake mode switching control.

Abstract: A method is provided which includes providing a coolant-conditioning unit which includes a facility coolant path, having a facility coolant flow control valve, and a system coolant path accommodating a system coolant, and having a bypass line with a system coolant bypass valve. A heat exchanger is coupled to the facility and system coolant paths to facilitate transfer of heat from the system coolant to facility coolant in the facility coolant path, and the bypass line is disposed in the system coolant path in parallel with the heat exchanger. A controller automatically controls a regulation position of the coolant bypass valve and a regulation position of the facility coolant flow control valve based on a temperature of the system coolant, and automatically adjusts the regulation position of the system coolant bypass valve to facilitate maintaining the facility coolant flow control valve at or above a specified, partially open, minimum regulation position.

Abstract: A heat transfer system is provided for a road vehicle having a passenger cabin. A primary branch includes a primary pump and a primary power plant. An auxiliary branch includes an auxiliary coolant pump, an auxiliary heat source, and a cabin heat exchanger. A thermostatic multi-way valve directs coolant from a valve inlet to substantially only a first valve outlet when receiving coolant below a first temperature. The valve directs coolant from the valve inlet to substantially only a second valve outlet when receiving coolant above a second temperature. The valve inlet is coupled to receive coolant from either the primary branch or the auxiliary branch. The first valve outlet is configured to return coolant to the same branch as is connected to the valve inlet. The second valve outlet is configured to direct coolant to the other branch to which the valve inlet is not connected.

Abstract: A heat exchanger for a vehicle includes: a heat releasing unit that is stacked with a plurality of plates and that forms connection flow channels to intersect at the inside thereof to inject other working fluids and that exchanges a heat of working fluids that pass through the respective connection flow channels, a bypass unit that is formed in the heat releasing unit to form a plurality of inflow holes and exhaust holes that inject and exhaust the working fluids to the respective connection flow channels and that connects the inflow hole and the exhaust hole that is connected to one of the respective connection flow channels, and a valve unit that is mounted within the heat releasing unit to correspond to the inflow hole that forms the bypass unit and that is selectively opened or closed using a deformation force of bimetal that is deformed according to a temperature of a working fluid that is injected into the inside thereof to inject the working fluid into the heat releasing unit and the bypass unit.

Abstract: A plenum provides cooled air to an inlet of an enclosure. An electronics assembly within the enclosure includes temperature sensors. Each of a plurality of position variable flow restrictors is positioned to control flow of the cooled air to a portion of the electronics assembly. A controller individually positions each flow restrictor based on temperature measurements provided by the temperature sensors associated with the portion of the electronics assembly for which cooled air is provided via the flow restrictor.

Abstract: A waste heat recovery system that efficiently converts waste heat from an engine coolant and an engine exhaust in a vehicle. The system includes a coolant heat exchanger that receives heat from the engine coolant, an exhaust heat exchanger that receives heat from the engine exhaust and an economizer heat exchanger. A plurality of valves control the flow of the fluid in different modes as determined by a power ratio between the heat provided by the exhaust heat exchanger and the heat provided by the coolant heat exchanger, including an economizer heat exchanger after coolant heat exchanger mode at low power ratios, where the fluid from the pump flows to the economizer heat exchanger after the coolant heat exchanger and an economizer heat exchanger before coolant heat exchanger mode at high power ratios, where the fluid from the pump flows to the economizer heat exchanger before the coolant heat exchanger.

Abstract: A heat exchanger for a vehicle may include a heat radiating portion provided with first, second and third connecting lines formed alternately by stacking a plurality of plates, and receiving first, second and third operating fluids respectively into the first, second and third connecting lines, the first, second and third operating fluids heat-exchanging with each other during passing through the first, second and third connecting lines and the first, second and third operating fluids supplying into the first, second and third connecting lines not being mixed with each other and being circulated; and a bifurcating portion connecting an inflow hole for flowing one operating fluid of the first, second and third operating fluids with an exhaust hole for exhausting the one operating fluid, and adapted for the one operating fluid to bypass the heat radiating portion according to a flow amount of the one operating fluid.

Abstract: A heat exchanger may include a heat radiating portion provided with first, second, and third connecting lines formed in a predetermined sequence by stacking a plurality of plates, and receiving first, second, and third operating fluids respectively into the first, second, and third connecting lines. The first, second, and third operating fluids exchange heat with each other but are not mixed with each other. The heat exchanger may include a bifurcating portion connecting an inflow hole for flowing one operating fluid of the first, second, and third operating fluids with an exhaust hole and adapted for the one operating fluid to bypass the heat radiating portion according to a temperature of the one operating fluid, and a valve unit adapted to flow the one operating fluid selectively into the heat radiating or bifurcating portions according to a temperature of the one operating fluid flowing into the inflow hole.

Abstract: A system for cooling an engine is described. The system includes a heat exchanger having a first heat exchange portion that removes heat energy from coolant fluid flowing therein, and a second heat exchange portion that removes heat energy from coolant fluid flowing therein; a first thermostat integral to the heat exchanger and fluidically and mechanically coupled to at least one of the first and second heat exchange portions; and a second thermostat, integral to the heat exchanger and fluidically and mechanically coupled to at least one of the first and second heat exchange portions.

Abstract: An exhaust heat recovery system (EHRS) for a vehicle is provided that is operable to direct coolant heated by exhaust heat to a vehicle transmission under certain operating conditions after the engine is adequately heated by the exhaust heat and without further heating the engine with the exhaust heat. Thus, recovery of exhaust heat is increased as the transmission is heated to a higher operating temperature than the engine using the heated coolant. The EHRS may also operate in a bypass mode during which exhaust heat is not directed to the engine or the transmission. A method of managing exhaust heat is also provided.

Abstract: A switchable exhaust gas heat exchanger includes an exhaust gas feed line and an exhaust gas discharge for an exhaust gas stream; a first exhaust gas passage and a second exhaust gas passage; a switching valve configured to switch the exhaust gas stream between the first and second exhaust gas passages; and a heat exchanger through which a coolant flows which is arranged in the first exhaust gas passage. The second exhaust gas passage routes the exhaust gas stream past the heat exchanger to the exhaust gas discharge. The switching valve is configured to be switched as a function of the temperature of the coolant and is a proportional control valve. A switching threshold and a switching limit of the coolant determine flow of the exhaust gas stream through the first and second exhaust gas passages.

Abstract: The vehicle control apparatus configured to control a vehicle includes a fuel cell configured to supply electric power to the vehicle; an air conditioning mechanism having a heater core; a first medium circuit; a radiator installed in the first medium circuit; a bypass circuit formed in the first medium circuit to make a bypass flow of the cooling medium bypassing the radiator; a regulation valve installed in the first medium circuit to regulate a ratio of a flow rate of the cooling medium going through the radiator to a flow rate of the cooling medium going through the bypass circuit; a second medium circuit; a cooling medium circulation pump installed in at least one of the first medium circuit and the second medium circuit; a temperature acquisition module; a warm-up controller; and a state switchover structure.

Abstract: A method is provided for adjusting several parallel connected heat exchangers supplied with a coolant medium. The aim of the invention is to simplify the adjustment. For this purpose, the method consists in a) determining a specific value of heat requirement for each heat exchanger in a predetermined time period; b) comparing the specific values of all heat exchangers therebetween and c) in modifying the adjustment of the heat exchanger having the lowest specific value of heat requirement in such a way that the heat requirement thereof is increased.

Abstract: Disclosed is a temperature conditioning system including several thermal transfer blocks, where each is associated with one of several components requiring thermal management. Each of the components is associated with a different time dependent thermal management profile. A fluid path, with a heat transfer fluid, connects one or more transports to the thermal transfer blocks. For each thermal transfer block, at least one thermo-responsive valve is located downstream from the thermal transfer block. The thermo-responsive valve is passive in that it does not require energy other than thermal energy to move from a starting position to an ending position and the thermo-responsive valve is free of any exterior control lines. A method of temperature conditioning components is also disclosed including circulating a heat transfer fluid and optimizing the flow rate of the heat transfer fluid in response to differential changes in temperature of the heat transfer fluid by actuating one or more thermo-responsive valves.

Abstract: The assembly includes a pair of heat exchangers, each including an upper and lower manifold, parallel and spaced relative to one another. Tubes extend between each set of upper and lower manifolds with fins disposed between each of the tubes. A valve system controls fluid flow between the upper manifolds and the lower manifolds. The valve system is movable between a maximum cooling mode with fluid flow form the first upper manifold through both of the tubes and to said first lower manifold. A temperate mode allows fluid to flow from the first upper manifold to the first lower manifold and from the second upper manifold to the second lower manifold to prevent flash fogging. A maximum cooling mode allows fluid to flow from the second upper manifold through both of the first and second tubes to the lower manifolds.

Abstract: A method of providing cooling by a cooling system to a computer data center. The method includes providing a plurality of air-and-water radiators and one or more chillers, the chillers each having a first side in fluid communication with a chilled water loop and a second side in communication with a condenser water loop. The method also includes circulating a first portion of return water coming from the computer data center to a first subset of the air-and-water radiators and through the condenser water loop, circulating a second portion of the return water from the computer data center to a second subset of the air-and-water radiators and through the chilled water loop, and circulating the first portion and the second portion of the return water to the computer data center as cooled supply water.

Abstract: A method includes circulating a heat transferring fluid in a substantially closed system including an interstice between a wafer and a chuck at a first pressure. The method further includes pumping the fluid out of the interstice and increasing the pressure of the fluid to a second pressure. The method further includes reducing the pressure of the fluid to the first pressure and returning the fluid to the interstice. In the system, the fluid in the interstice transfers heat from the wafer to the chuck, or vice versa, by conduction. The presence of a conducting fluid in the interstice thereby decreases the resistivity of the interface, and enables more efficient heat transfer from the wafer to the chuck.

Abstract: A method and a system for controlling temperature of a liquid in small flow amount, for supplying a liquid whose temperature is highly accurately controlled, as a flow of a small flow amount or an intermittent flow. A liquid supplied from a supply path is pressurized and introduced into a circulation path, and is temperature-controlled by a temperature control device in the circulation path, while being circulated in the circulation path by a pump in the pressurized condition. The liquid is supplied to an exterior device through a discharge path caused to branch from the circulation path, as a consecutive flow in a small amount or an intermittent flow in a small amount in a flow amount less than at least ½ times the flow amount in the circulation path, by adjusting a discharge valve provided in the discharge path.

Abstract: A bypass valve for a heat exchanger including a plurality of parallel tubular members comprises a housing having a hollow plug portion adjacent to an actuator portion. The actuator comprises a reciprocating plunger extending into the plug portion and a solenoid having a central actuator shaft attached to the plunger, wherein the actuator shaft extends upon energization of the solenoid so that the plunger prevents bypass flow through the valve. The valve also comprises a temperature sensor for sensing a temperature of the fluid flowing through the heat exchanger, the temperature sensor being electrically coupled to the solenoid through one or more conductors, wherein the temperature sensor is located at the first end of the actuator shaft and the conductors extend through the hollow interior of the actuator shaft to the second end thereof.

Abstract: An exposure apparatus for exposing a substrate to light via a reticle. A cooling device cools first water supplied from a facility by use of second water supplied for the facility, in which a temperature of the second water to be supplied from the facility is lower than a temperature of the first water to be supplied from the facility, a first supply path supplies the first water from the facility to the cooling device, a second supply path supplies the second water from the facility to the cooling device, and a third supply path supplies the first water cooled by the cooling device from the cooling device to a heat source inside the exposure apparatus.

Abstract: A heating system comprises a heater and a local heat exchange system in which the local heat exchange system comprises: a primary heat exchanger; a heat store having a secondary heat exchanger; a cold water inlet; and a hot water outlet, in which the local heat exchange system is remotely located from the heater, the primary heat exchanger and the heat store are arranged so as to be heated by the heater, and the primary and secondary heat exchangers are in fluid-flow communication with the cold water inlet and the hot water outlet.

Abstract: A heating apparatus for a cabin of a construction equipment in which hot air ejected from an oil cooler is used for heating in the winter while it is ejected out in the summer, to maximize cooling or heating efficiency of the cabin of the construction equipment. The heating apparatus for a cabin of a construction equipment includes a duct ejecting air ejected from an oil cooler provided inside an automotive body at the rear of the cabin to the outside of the automotive body, and a switching unit provided in the duct to open and close an air vent in the duct, guiding the air inside the duct to the rear of the cabin if it is opened. The heating apparatus is automatically operated depending on its peripheral temperature condition to maximize cooling or heating efficiency of the cabin.

Abstract: One embodiment of the present invention is a method for setting and controlling temperature of a device that includes: (a) thermally contacting the device to a heat transfer apparatus, the heat transfer apparatus having an apparatus intake to receive thermal transfer fluid, an apparatus exhaust to output thermal transfer fluid, and a conduit to conduct thermal transfer fluid from the apparatus intake to the apparatus exhaust through the heat transfer apparatus; (b) flowing a first thermal transfer fluid in a first thermal control circuit at a first temperature, and flowing a second thermal transfer fluid in a second thermal control circuit at a second temperature; (c) at a first predetermined time, directing the first thermal transfer fluid to flow to the apparatus intake, and from the apparatus exhaust back to the first thermal control circuit and the second thermal transfer fluid to flow in the second thermal control circuit without flowing to the apparatus intake; and (d) at a second predetermined time, di

Abstract: A system for and method of controlling the temperature of a flat workpiece such as a semiconductor wafer are disclosed. The workpiece is mounted on a workpiece chuck which is mounted over a base between the chuck and a host machine such as a wafer prober used to test integrated circuits on a wafer. The chuck includes an upper portion on which the workpiece is mounted. The temperature of the upper portion of the chuck is controlled to control the temperature of the workpiece. The temperature of the base is controlled to reduce the amount of heat flow between the chuck and the host machine. A power and control system includes a switching power supply which provides power to system components including heaters in the chuck used to heat the workpiece. A series of filters removes electrical noise generated by the switching power supply such that low-noise operation is realized.

Abstract: There are provided a water-refrigerant heat exchanger 30 for exchanging heat between refrigerant discharged from a compressor 21 and engine-cooling water circulating an engine-cooling water circuit 10, prior to being fed into the radiator 22, and a bypass 25 for guiding the refrigerant prior to being fed into the evaporator 24 to the water-coolant heat exchanger 30 while bypassing the evaporator 24 and the compressor 21. When it is desired to accelerate the warming-up of the engine 11, the bypass 25 is closed to operate the compressor 21 to heat the engine-cooling water by high-pressure refrigerant, and when it is desired to complement the capacity of the radiator 12, the bypass 25 is open to guide the liquid-phase refrigerant to the water-refrigerant heat exchanger 30 to effectively cool the refrigerant by using the phase change of the refrigerant.

Abstract: An apparatus for refrigeration and heating comprising a refrigeration machine for providing cold and hot fluid, the cold and hot fluid delivered through a cold supply pipe and a hot supply/return pipe to a fan coil unit. An upstream two position three-way valve connected to the cold supply pipe and to the hot supply/return pipe, a modulating three-way mixing valve located downstream of the upstream two position three-way valve, and a fan coil unit pump located downstream of the modulating three-way mixing valve. The modulating three-way mixing valve is for allowing none, a portion of, or all of the fluid in the coil to be recirculated through the coil by the fan coil unit pump. A downstream two position three-way valve located downstream of the modulating three-way mixing valve and for returning fluid to the cold return pipe or the hot supply/return pipe. The fan coil unit for refrigerating a room or walk in cooler by pumping cold fluid through the coil.

Abstract: A heat exchange cooling system for cooling an object of heat exchange such as machinery, air, or liquid is provided. The system includes a heat exchanger, a cooling water supply device, cooling water circulation piping, a flow rate adjustment valve, a cooling water supply system, and a controller for controlling the flow rate of cooling water. The system includes separate loops for the circulation piping and the cooling supply system. The separate loops are coupled to one another at an inlet and an outlet of the system.

Abstract: A combined self-cleaning grease and particulate filter and heat exchanger used to collect thermal energy normally vented through flue hoods or other ventilation systems in commercial or institutional kitchens. The system utilizes a piping configuration which circulates fluid in parallel to a plurality of heat exchangers is disclosed. Fluid circulated within the heat exchanger/filter may then be utilized for heating other mediums, such as water or air and to promote drainage of the particulate matter and grease from the filter into a removable storage container.

Abstract: Bypass valves and heat exchangers employing same are shown where the bypass valves cause the flow through the heat exchangers to be short-circuited under certain temperature conditions. The heat exchangers are formed of stacked plate pairs or tubes having enlarged communicating distal end portions forming inlet and outlet manifolds. The bypass valves can be plugged in where desired between the enlarged distal end portions to produce bypass flow between the inlet and outlet manifolds. The bypass valves include a housing which can be brazed in place during brazing of the heat exchanger. The housing has inlet and outlet openings in communication with the respective inlet and outlet manifolds for bypass flow therebetween. A removable temperature responsive actuator is located in the housing for blocking and unblocking the bypass flow through the valve.

Abstract: A combined self-cleaning grease and particulate filter and heat exchanger used to collect thermal energy normally vented through flue hoods or other ventilation systems in commercial or institutional kitchens. The system utilizes a piping configuration which circulates fluid in parallel to a plurality of heat exchangers is disclosed. Fluid circulated within the heat exchanger/filter may then be utilized for heating other mediums, such as water or air and to promote drainage of the particulate matter and grease from the filter into a removable storage container.

Abstract: Cooling equipment, which may be connected to the water discharge from a working or operating machine with a water (20/20′) cooling circuit (2) to make the water re-circulate once cooled (24), characterized in that the cooling equipment comprises: at least one cooling tower (21-21′) with an extended surface for wetting and evaporation; at least one air flow generator device (3-31) for easing the evaporation; at least one closed cycle frigorific circuit (1) whose condenser (12) is placed downstream (12′) of the cooling tower (21-21′) with respect to the air flow (3-31) and whose evaporator (14) is placed downstream of the water cooling circuit (2) for exchanging heat with the cooled water (22) in the cooling tower (2-21′) for then making the water re-circulate in the operating machine (24).

Abstract: A system for and method of controlling the temperature of a flat workpiece such as a semiconductor wafer are disclosed. The workpiece is mounted on a workpiece chuck which is mounted over a base between the chuck and a host machine such as a wafer prober used to test integrated circuits on a wafer. The chuck includes an upper portion on which the workpiece is mounted. The temperature of the upper portion of the chuck is controlled to control the temperature of the workpiece. The temperature of the base is controlled to reduce the amount of heat flow between the chuck and the host machine. A power and control system includes a switching power supply which provides power to system components including heaters in the chuck used to heat the workpiece. A series of filters removes electrical noise generated by the switching power supply such that low-noise operation is realized.