Abstract: A method, apparatus and system for temperature control of a fluid in an air cooled heat exchanger (ACHE). Certain embodiments may involve measuring a discharge fluid temperature of a fluid discharged from the ACHE, reducing a fan speed and at least partially closing an air intake and/or an air exhaust of the ACHE when the discharge fluid temperature meets a discharge fluid temperature criterion to reduce cooling of the fluid in a tube bundle of the ACHE, measuring a plenum chamber air temperature, and injecting heated air proximate the tube bundle when the plenum chamber air temperature meets a plenum air temperature criterion to avoid overcooling of the tube bundle fluid.

Abstract: A multi-rack assembly is provided which includes first and second electronics racks. The first electronics rack includes one or more cooling units disposed within the first electronics rack, which are coupled in fluid communication with a primary coolant loop of the first electronics rack to, at least in part, provide cooled coolant to the primary coolant loop and facilitate cooling one or more first rack electronic components. The second electronics rack includes a secondary coolant loop coupled in fluid communication with the cooling unit(s) disposed within the first electronics rack. The multi-rack assembly further includes a controller to automatically provide cooled coolant to the secondary coolant loop, and wherein the controller controls flow of cooled coolant from the cooling unit(s) to the secondary coolant loop depending, at least in part, on cooling requirements of the first electronics rack.

Abstract: A pump assembly includes inlet and outlet interfaces capable of coupling to a liquid cooling loop tubing, a plurality of pump connectors coupled to the inlet and outlet interfaces enabling pluggable connection of a plurality of pumps to the inlet and outlet interfaces, and a controller. The controller is coupled to the plurality of pumps and controls power levels of the individual pumps, enabling control of fluid flow rate in the liquid cooling loop.

Abstract: A cooling device for a motor vehicle, including a cooling circuit configured to cool an engine assembly using a liquid coolant circulated by at least one variable delivery pump, the delivery output by each pump being controlled by a control system. The control system is configured to regulate the delivery of each pump so that the temperature of the liquid coolant does not exceed a fixed datum temperature.

Abstract: A ventilation and air-conditioning apparatus includes a supply-air passage that leads from a supply-air intake port to a supply-air blowout port, a discharge-air passage that leads from a discharge-air intake port to a discharge-air blowout port, a heat exchanger that performs heat exchange between air currents flowing through a supply-air passage and a discharge-air passage, a supply-air blower that supplies air to a room, a discharge-air blower that discharges air outside a room, a damper that switches whether to pass discharge air through the heat exchanger, a temperature sensor that measures a temperature of air supplied to a room, and a control unit that controls the supply-air blower, the discharge-air blower, and the damper. The control unit controls a throttling degree of the damper based on an output of the temperature sensor so that a temperature of air supplied to a room approaches a predetermined temperature.

Abstract: A brewing process including taking off a fluid having a starting temperature from a heat store; feeding the fluid to a plurality of heat consumers for releasing heat; and returning to the heat store the fluid which has a final temperature. The brewery installation has a heat store for controlling the flow of the fluid in the installation, and a plurality of heat consumers each of which is connected to the primary circuit for releasing heat. Improved efficiency is achieved in part by the final temperature of the fluid which flows out of the respective heat consumers is measured and the return of the fluid is controlled as a function of the measured final temperature.

Abstract: One embodiment of the present invention is a gas discharge system utilizing a temperature-actuated valve. The temperature-actuated valve uses a temperature-measuring device to sense the temperature of the natural gas after it pass through an expansion valve and after leaving a heat exchanger inside the discharge station. This temperature-measuring device sends a signal to a valve that is automatically actuated. If the temperature of the gas is too low, the valve is tightened, increasing the residence time in the heat exchanger and increasing the gas temperature. If the gas temperature is too high, the valve is opened, reducing the residence time in the heat exchanger, decreasing gas temperature. Using this temperature-actuated valve to control the temperature of a wet gas discharge station is also disclosed.

Abstract: An exhaust gas recirculation cooler may include a housing and a first wall. The housing may include an exhaust gas region, a coolant region, an exhaust gas inlet, and an exhaust gas outlet. The first wall may be fixed within the housing and may separate the exhaust gas region from the coolant region. The first wall may include a first portion formed from a first material and facing the exhaust gas region and a second portion formed from a second material and facing the coolant region. One of the first and second materials may have a coefficient of thermal expansion that is greater than the other of the first and second materials. The first wall may be deflected toward one of the exhaust gas region and the coolant region during cooler operation based on a difference in the coefficient of thermal expansion of the first and second materials.

Abstract: A heat exchanger system is provided having a heat exchanger with a first inlet. A first outlet is fluidly coupled to the first inlet by a plurality of first channels. A second outlet is fluidly coupled to the first inlet by a second channel, the second channel having a first portion arranged transverse to the plurality of first channels. A bypass valve having a second inlet fluidly coupled to the first outlet and a third inlet fluidly coupled to the second outlet, and a third outlet selectively fluidly coupled to the second inlet and the third inlet, the third outlet being fluidly coupled to the first inlet. When in a bypass mode of operation, the thermal transfer medium flows through a channel in the heat exchanger to de-congeal the oil within the plurality of first channels.

Abstract: An exhaust duct for cooling an exhaust flue. One or more modular coolant coils are disposed about the outer circumference of or within the flue interior cavity for thermal communication with exhaust gas. Each coil has a helical spiral profile extending along the flue axial dimension, an interior lumen there through for passage of coolant provided by a cooling system, and a respective inlet and outlet for respective intake and discharge of coolant. Optionally at least one remotely adjustable valve is coupled to the coolant coil and an industrial automation controller, for regulation of coolant flow rate within the coil. The coolant coils may incorporate one or more coolant temperature sensors in communication with the controller. A plurality of exhaust duct cooling coils may be under common control of the controller, for allocation of coolant among the coils and other portions of the cooling system.

Abstract: An integrated cooling system includes a first layer having a contact area configured for coupling to a heat source, wherein the first layer has a fluid path passes adjacent to the contact area where the heat source is in thermal contact with first layer. Coupled to the first layer is a second layer to which a number of air fins are attached. A pump is connected to the fluid path forming a closed path for circulating a fluid through the first layer. Within the first layer, the fluid path will contain a plurality of fluid fins which control the flow of a fluid within the fluid path. Within the fluid path, a structure providing a double-counter flow adjacent to one or more electronic devices. Additionally the fluid path can include a microchannel plate structure. The system can include a programmable controller connect the an air-mover, pump and temperature sensing device.

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: A radiator element in a motor vehicle is disclosed, the motor vehicle including a body, a driver's space with at least one door for access to the driver's space, and a step element with at least one step and situated below the door. An engine cooling system includes a radiator element in which a circulating coolant is cooled by an airflow flowing through the radiator element. The radiator element is positioned close to the step element. An air inlet aperture is positioned between or behind the steps. The radiator element is a second radiator element of the vehicle, operable when the first radiator element cools insufficiently.

Abstract: In a cooling device for a vehicle having a main passage through which coolant water is circulated between the interior of an engine and a radiator 13, a heater passage through which the coolant water is circulated between the interior of the engine and a heater core 15, and a thermostat 18 that operates in response to the temperature of the coolant water and selectively permits and stops circulation of the coolant water in the main passage, the heater passage is used as a heater/bypass passage, which functions also as a bypass passage, through which the coolant medium is circulated without passing through the radiator 13 when the engine warms up. This makes it unnecessary to form a separate bypass passage, thus simplifying the passage configuration.

Abstract: A temperature controller includes: a closed first circulation circuit having a fluid cooler; a closed second circulation circuit having a halogen lamp heater as a fluid heater and feeding a thermal fluid heated by the halogen lamp heater to a vacuum chamber as an object to be temperature-controlled; a feed path that feeds the thermal fluid from the first circulation circuit to the second circulation circuit; and a discharge path that discharges the thermal fluid from the second circulation circuit and returns the thermal fluid to the first circulation circuit. A flow-rate control valve that adjusts and controls a feed flow-rate of the thermal fluid from the first circulation circuit is provided in the feed path. A pressure control valve that compensates a pressure of the thermal fluid at a predetermined pressure level or less is provided in the discharge path.

Abstract: The present invention provides an apparatus for improving the fuel economy of a vehicle. The apparatus includes a transmission having a transmission sump that contains transmission fluid, and a heat exchanger disposed within said sump and at least partially submerged in the transmission fluid. The apparatus also includes an engine having a plurality of engine coolant channels. An engine pump is operatively connected to the engine. The engine pump is configured to transfer engine coolant through the plurality of engine coolant channels and then through the heat exchanger. Heat from the engine coolant is transferred to the transmission fluid when the engine coolant passes through the heat exchanger. The heat transferred to the transmission fluid decreases transmission fluid viscosity such that transmission spin losses are reduced and fuel economy is improved. A corresponding method for improving the fuel economy of a vehicle is also provided.

Abstract: A heat exchanger for use with a carpet cleaning system having combined exhaust gases of an internal combustion engine and other hot exhaust gases expelled from a vacuum pump as a single input to a heat exchanger for heating the carpet cleaning fluid. A heat exchanger control system permits constant control of a stream of cleaning fluid both while the cleaning fluid is flowing through the heat exchanger and while the cleaning fluid is stagnant within the heat exchanger, without the potential overheat condition of the portion of cleaning fluid stagnant in the heat exchanger known in prior art devices that required a constant flow of the cleaning fluid.

Abstract: A heat transfer controlling mechanism and a fuel cell system, which allow working fluid to flow in a predetermined direction in a loop-shaped flow path without a back flow, having a simple structure independent of the orientation during use, low power consumption, and efficient heat transfer and size reduction. The mechanism includes a vaporizing portion, a condensing portion, and a loop-shaped flow path connecting the vaporizing and the condensing portions so as to seal working fluid. The mechanism transports heat by vaporizing the fluid in the vaporizing portion and condensing the fluid in the condensing portion to control heat transfer. The mechanism further includes a gas passage suppressing portion on one side in the flow path, for allowing liquid, but not gas, to pass therethrough and a liquid passage suppressing portion on the other side in the flow path, for allowing gas, but not liquid, to pass therethrough.

Abstract: An constant temperature circulator for maintaining a liquid at a constant temperature including a housing that encapsulates a controller, a display, a heating element, a temperature sensor, and an electric motor having an impeller. The housing includes a first port and a second port that cooperatively define a chamber that encapsulates the impeller, an aperture and an opening, such that actuation of the impeller when the electric motor is activated by the controller moves the liquid from the aperture, through the chamber and to the opening.

Abstract: The invention relates to a heating assembly (1) comprising at least one PCT element, in particular for a motor vehicle, said PCT element (2) being located between two contact sheets (3, 4), which are used to make electrical contact. According to the invention, the heating assembly (1) comprises a frame (7) and at least one of the two contact sheets (3)comprises a staggered section outside the frame (7), said staggered section of the projecting part (10) of the contact sheet (3) running parallel with the remaining part (11) of said sheet (3).

Abstract: A cooling method of an electronic device, the cooling method naturally circulating a cooling medium between an evaporator, which gasifies the cooling medium and cools heat-discharging air from the electronic device by heat exchange with the heat-discharging air, and a cooling tower or a condenser, which is disposed at a higher position than the evaporator and liquefies the gasified cooling medium, and subjecting a flow rate of the cooling-medium liquid supplied to the evaporator to valve control so that a temperature of the air obtained after the heat exchange and the cooling by the evaporator becomes a temperature suitable for an operating environment of the electronic device, wherein the improvement comprises that a condensation temperature or a condensation pressure of the cooling-medium gas in the cooling tower or the condenser is configured to be not varied even when the flow rate of the cooling-medium liquid supplied to the evaporator is subjected to the valve control.

Abstract: The present invention relates to a PTC heating element with at least one PTC resistance element which is arranged between two electrically conductive plates in a housing opening of a housing and, with at least one of the electrically conductive plates as an intermediate layer, which is pressed with an initial tension against a heat-emitting element which is held at the housing. With the present invention, a PTC heating element of the type mentioned at the beginning that can be manufactured easily and economically is to be specified. To solve this problem, the present invention further develops the PTC heating element mentioned at the beginning in such a way that attachment tabs arranged on the edge of the housing opening protrude beyond the housing opening and in such a way that the heat-emitting element has tab cuts, behind which the tabs engage.

Abstract: A refrigerant cooling apparatus is provided, in which a circulating refrigerant may be cooled to a prescribed temperature efficiently in a stable condition even when the cooling temperature of the circulating refrigerant is near the freezing point of the circulating refrigerant.

Abstract: A method for cooling a semiconductor including passive cooling including transferring heat via passive cooling components; active cooling including transferring heat via active cooling components; and controlling the active cooling based on temperature of the semiconductor. A cooling system for a semiconductor including: a passive component in thermal contact with the semiconductor; an active cooling component in thermal contact with the semiconductor; and a controller controlling the active cooling component.

Abstract: Thermal energy management for production installations is provided. A storage tank for storing a fluid heated in relation to the ambient temperature has a heat-insulated wall and at least one discharge and one feed. The storage tank stores the amounts of heat occurring at various process stations in an installation, and, if required, delivers them again, with a high level of efficiency. The discharges and the feeds are arranged at different height levels of the storage tank and associated with the storage tank is a control device which passes a fluid flow at higher temperature through a discharge or feed at a higher height level and a fluid flow at a lower temperature through a discharge or feed at a lower height level. Alternatively the feeds and discharges can be displaceable in respect of height. In that case one feed and one discharge can be sufficient.

Abstract: An apparatus for use with a process liquid for controlling the temperature of a semiconductor-processing target comprises first and second tanks adapted for holding process liquid, at least one fluid level sensor carried by the first tank for monitoring the amount of process liquid in the first tank, and a valve coupled to one of the at least one fluid level sensor and configured to increases the flow of process liquid from the second tank to the target when the amount of process liquid in the first tank drops to a first predetermined amount. The first tank may include first and second compartments partially separated by a divider with a top whereby process liquid in the first compartment flows over the top of the divider into the second compartment.

Abstract: The invention relates to a ventilation system for exchanging the air in a room with outside air, which system comprises: A fine wire heat exchanger having a first channel and a second channel, which channels are in heat-exchanging contact with each other, and wherein the first channel has an inlet connected to outside air and an outlet connected to the air in the room, and wherein the second channel has an inlet connected to the air in the room and an outlet connected to the outside air; balancing means for balancing the flow in both channels, such that the heat transfer is maximized. The invention also relates to a combination of a façade, a room on the inside of and adjacent to the façade and a ventilation system, wherein the inlet of the first channel of the system is connected to outside air on the outside of the façade and the outlet is connected to the air in the room, and wherein the inlet of the second channel is connected to the air in the room and the outlet is connected to the outside air.

Abstract: A device manufacturing apparatus includes a driving unit configured to perform driving for processing an object, a conduit through which a coolant that recovers heat generated by the driving unit flows, a cooler configure to cool the coolant that flows through the conduit, a heater configured to heat the coolant cooled by the cooler so that the driving unit cooled by the heated coolant has a target temperature, and a controller configured to heighten a target temperature of the coolant cooled by the cooler, if it is determined, based on control information to control the driving unit, that a heat amount to be generated by the driving unit decreases.

Abstract: A first heat medium is circulated in a first circulating path (engine cooling circuit) of a heat source (engine) to cool the heat source down by the first heat medium, and exhaust heat from the heat source is absorbed by the first heat medium. A second heat medium is circulated in a second circulating path (exhaust heat recovering circuit) to exchange heat of exhaust air with the second heat medium, and heat of the first heat medium is exchanged with the second heat medium circulating in the second circulation path. The heat of the second medium to which heat is applied due to these heat exchanges is stored in heat storage means (heat storage tank).

Abstract: A vehicle cooling system comprises a vehicle unit, a heat exchanger, a cooling fan, a coolant pump, a three-way valve, and a control unit. The heat exchanger is arranged in the coolant route to selectively receive a coolant from the coolant outlet of the vehicle unit. The cooling fan is arranged to blow cooling air to the heat exchanger. The coolant pump is arranged to circulate the coolant through the coolant route. The three-way valve is arranged to switch the coolant route between a heat exchanger route that passes through the heat exchanger and a bypass route that bypasses the heat exchanger. The control unit is configured to control operation of at least one of the cooling fan, the three-way valve and the coolant pump based on a temperature of the coolant at the heat exchanger and a temperature of the coolant at the coolant outlet of the vehicle unit.

Abstract: The invention relates to a heat exchanger, particularly for a motor vehicle, comprising a housing (2) with a connection (4) for the inlet or outlet of a first fluid, wherein the first fluid can flow through the housing (2), and wherein exchange means (1) are disposed in the housing (2), the second fluid flowing through these means, wherein the first fluid flows through a control member (7), by means of which the flow of the first fluid can be varied, wherein the connection (4) has a molding (6) for retaining the control member (7).

Abstract: Monitoring method and system are provided for dynamically determining flow rate of a first fluid and a second fluid through a heat exchanger. The method includes: pre-characterizing the heat exchanger to generate pre-characterized correlation data correlating effectiveness of the heat exchanger to various flow rates of the first and second fluids through the heat exchanger; sensing inlet and outlet temperatures of the first and second fluids through the heat exchanger, when operational; automatically determining flow rates of the first and second fluids through the heat exchanger using the sensed inlet and outlet temperatures of the first and second fluids and the pre-characterized correlation data; and outputting the determined flow rates of the first and second fluids. The automatically determining employs the determined effectiveness of the heat exchanger in interpolating from the pre-characterized correlation data the flow rates of the first and second fluids.

Abstract: Device and method for regulating the temperature of a substrate, in particular of a wafer, by means of a device comprising two temperature-regulating circuits that are operated with different temperature-regulating fluids.

Abstract: Methods, systems and apparatus for combining a thermal power plant with at least one data center.

Abstract: The invention relates to a system for regulating the temperature of a fuel cell that is cooled by a cooling fluid traveling through the cell, the system including both first control means for measuring the temperature of the cooling fluid and for controlling the flow rate of the controlling fluid as a function of said measured temperature of said cooling fluid, comprising second control means for measuring the flow rate of the cooling fluid and for controlling the temperature of the cooling fluid as a function of a flow rate difference between the command flow rate specified by said first control means and said corresponding measured flow rate of the cooling fluid such that said command temperature specified by the second control means compensates for said flow rate difference.

Abstract: Cool fluid of a predetermined temperature is supplied to a three-way valve 20 of a sub unit 2 from a cooling side tank 43 of a main unit 1 of a controller, through a supply pipe 14. Hot fluid of a predetermined temperature is supplied to the three-way valve 20 from a heating side tank 44 through another supply pipe 15. The cool and hot fluids are mixed in a predetermined ratio by the three-way valve 20 according to a temperature of the external heat load 7, and supplied to a heat exchange chamber of the external heat load 7, to maintain the temperature thereof at a target temperature. The temperature of the external heat load 7 is measured by one of a sensor 72 in a processing chamber, a sensor 23 in a constant temperature fluid supply pipe, and a sensor 24 in a constant temperature fluid return pipe, for feedback control of aperture of the three-way valve 20.

Abstract: An electronic equipment is provided, which comprises a liquid-cooling system and a cooling fan as a cooling system, efficiently cools the liquid-cooling system, and reduces fan noise.

Abstract: Regulating the temperature of a heat-generating device within a desired range using shape memory materials disposed on a heat sink. According to one embodiment, cooling fins are placed upon a heat-generating device. Fluid flows through the cooling fins to remove heat from the device. A shape memory material is placed within the path of fluid flow to regulate the amount of fluid flow in response to stimuli at desired low and high operating temperatures of the heat-generating device. At the low desired device operating temperature, the shape memory material restricts the amount of fluid flow through the cooling fins. At the high desired device operating temperature, the shape memory material does not restrict fluid flow through the cooling fins.

Abstract: An integrated cooling system for cooling systems such as laptops or subsystems such as a graphics card is disclosed. An integrated cooling system includes a first layer having a contact area configured for coupling to a heat source, wherein the first layer has a fluid path passes adjacent to the contact area where the heat source is in thermal contact with first layer. Coupled to the first layer is a second layer to which a number of air fins are attached. The invention includes a pump that is connected to the fluid path forming a closed path for circulating a fluid through the first layer. Within the first layer, the fluid path will contain a plurality of fluid fins which control the flow of a fluid within the fluid path. Within the fluid path, a structure providing a double-counter flow adjacent to one or more electronic devices. Additionally the fluid path can include a microchannel plate structure.

Abstract: Process and device for controlling the temperature of an outbound secondary flow in a secondary circuit from a heat exchanger by a primary flow in a primary circuit, via a member that regulates the primary flow, influenced by a control unit. The enthalpy difference between inbound and outbound primary flow to and from the heat exchanger and the secondary flow are determined. The flow in the primary circuit is determined, and the parameters are supplied to the control unit for controlling the member, whereby the primary flow is controlled in dependence of the secondary flow, so that power supplied to the heat exchanger substantially equals the sum of the power needed to raise the temperature of the secondary flow from the initial temperature to the desired outbound temperature; the assumed power requirement for compensating for energy stored in the heat exchanger; and the assumed leak power from the heat exchanger.

Abstract: In a driven axle assembly (12) for a motor vehicle that includes a differential housing located substantially in the center of the axle and tubes (16, 17) extending laterally from the differential, surrounding axle shafts (20) and opening into a lubricant reservoir (60) in the differential housing, a system for circulating and cooling axle lubricant includes a cover (26) for closing and sealing the housing having a first aperture into the housing where a ring gear rotates through the lubricant reservoir. The aperture in the cover opens to a chamber that holds lubricant carried through the aperture by the rotating ring gear. Conduit (72) connected by a hydraulic fitting to the chamber has its opposite end connected to an oil cooler mounted on the axle tube. Conduit (78) returns the lubricant to the reservoir in the differential housing.

Abstract: System and method for reducing temperature variation among components in a multi-component system. In this respect, component temperatures are controlled to remain relatively constant (approximately within 5° C.) with respect to other components, while allowing for multiple fluctuating heat loads between components. A refrigeration system possessing a variable capacity (speed) compressor and an electronic valve is utilized to control the flow of refrigerant through the refrigeration system. The temperature of the components is reduced by metering the mass flow rate of the refrigerant cooling the components to compensate for the heat load applied to the refrigeration system.

Abstract: A control to enable a further degree of enhancement in combustion efficiency in an automobile by effectively performing temperature control of cooling water in an automobile engine in accordance with various states of operation. Parameters from a variety of sensors that detect the state of an automobile engine are input into an engine control unit. Then, when the engine control unit determines from values of the accelerator opening and engine rotation speed, which serve as parameters indicating the operating state of the automobile, that the engine load is about to decrease, control is performed in the electronic control thermostat to maintain the cooling water temperature at a high temperature. Conversely, when it is determined that medium or high loads are due to increase, the control method is switched such that the electronic control thermostat is controlled by reading a target temperature corresponding to these parameter values from the engine control unit.

Abstract: An air conditioning apparatus includes a valve for selectively introducing the coolant discharged from a compressor to either a flow path for a water-coolant heat exchanger or another flow path to avoid the heat exchanger, a thermostat for detecting the temperature of a cooling water flowing into an engine and a controller for controlling the valve. When the temperature of the cooling water is equal to or less than a predetermined temperature, the controller controls the valve so that the coolant discharged from the compressor is introduced to the water-coolant heat exchanger. When the temperature of the cooling water is more than the predetermined temperature, the controller controls the valve so that the coolant discharged from the compressor avoids the water-coolant heat exchanger.

Abstract: Coolant systems, for power sources (e.g. internal combustion engines, fuel cells, and nuclear reactors) or microprocessors for example, are beneficially operated with coolant in a nucleate boiling state, but transitions to damaging film boiling are then possible. The disclosed coolant system includes a sensor, such as a thermocouple or thermistor, that provides a signal representative of fluctuations in the temperature at a heated surface. The signal also includes at least one parameter. A controller processes the signal to determine changes in the parameter of the signal and/or to determine the state of the coolant and can responsively change the coolant flow to avoid undesirable coolant states. For example, coolant flow can be changed by changing the output of a coolant pump. The controller can change coolant flow automatically, or a signal can be provided to an operator that an undesirable coolant state change is imminent or has occurred, thereby allowing operator intervention.

Abstract: A liquid filter/heat exchanger unit including a liquid filter and a heat exchanger, the liquid filter having a filter element in a filter housing. To bypass the heat exchanger, there is a bypass connecting the heat exchanger inlet directly to the unfiltered side of the filter element. A switching element is provided to control the liquid flow into the heat exchanger or into the bypass. The switching element is a bimetal element which is in a position directing the liquid flow into the bypass at a temperature below a switching temperature.

Abstract: A work machine, such as a wheeled loader or dumper, has a cooling and heating system comprising a main line (2) arranged to contain a fluid, a first heat exchanger (4) which is connected to the main line (2), and a charge-air cooler (8) for cooling compressed charge air for an internal combustion engine (12) arranged in the machine, which charge-air cooler (8) is connected to the main line (2). A second heat exchanger (10) is connected to the main line (2) downstream of the charge-air cooler (8), to which second heat exchanger (10) a hydraulic liquid line (14) is connected, so that heat can be transferred between the fluid in the main line (2) and the hydraulic liquid in the hydraulic liquid line (14).

Abstract: The invention relates to a controlling method of the discharge of coolant medium, and more particularly to a controlling method of the discharge of coolant medium in the heat exchange wind box. By mainly controlling the discharge of coolant medium in the heat exchange wind box, it is able to directly control the volume of discharged coolant medium that supplies the circulation need of the heat exchange tube according to the variations of the target volumes of environmental heat energy in the freezing and air-conditioning area. Therefore, it increases the operation efficiency of the freezing and air-conditioning equipment and achieves the heat balance stability of the freezing and air-conditioning area. Furthermore, by saving the circulated volume of the coolant medium, it achieves the energy saving objective.

Abstract: The present invention relates to a high/low temperature water cooling system. The high/low temperature water cooling system according to the present invention is formed of a high temperature cooling water circulation circuit and a low temperature cooling water circulation circuit which are formed through the high temperature heat exchanger and low temperature heat exchanger of the heat exchanger, so that the high temperature cooling water heated by the engine is heat-exchanged with an external air in the high temperature heat exchanger and then is used for cooling the engine. A part of the cooling water cooled by the high temperature heat exchanger is re-cooled using the low temperature heat exchanger for thereby cooling the charge air and oil which circulate in the charge air cooler and oil cooler.

Abstract: A convective cooling apparatus cools an electronic device including at least one heat-generating component and enclosed in a case having cooling medium such as air or fluid therein. The convective cooling apparatus neither attempts to increase the velocity of flow in the cooling medium nor replaces the cooling medium with other material as prior art cooling apparatus did. Instead, it utilizes the instability which is inherent in the flow of the cooling medium. In the convective cooling apparatus, by using a driver for generating a signal tuned to the characteristic frequency of the flow, a an acoustic vibrator is driven to provide acoustic waves. The acoustic waves induce resonance of flow, which renders the cooling medium vigorously mixed, which, in turn, enhances the heat dissipation from the device.