Abstract: A pumped refrigerant cooling system for use in a row of equipment racks is configured to contain electronic equipment. The system includes a communication network and a refrigerant distribution unit in fluid communication with a chilled refrigerant supply and a heated refrigerant return. A cooling module is in fluid communication with the refrigerant distribution unit by a supply line and a return line. The cooling module is coupled to the communication network, and includes an evaporator and a fan configured to direct air over the evaporator. A sensor package is configured to monitor temperature and pressure reference points provided in the pumped refrigerant cooling system and the equipment racks. The system further includes a controller forming part of the cooling module and coupled to the communication network and the sensor package.

Abstract: A hydrophilic composition and a hydrophilic member obtained by using the composition are provided, which composition contains a hydrophilic polymer having a specific structure of having a hydrolysable group in the side chain thereof in a content of 50% by weight or more based on the weight of the solid components and further contains an additive having an antifungal property, and which composition shows excellent water resistance and maintains the high hydrophilicity even after being stored for a long period under an environment of high temperature and high humidity.

Abstract: This invention employs an arrangement of flat plate heat exchangers and a pump that function as a thermal powered hydronic ammonia absorption chiller. Chilling is achieved by bubbling ammonia gas through a liquid refrigerant causing a reduction of the partial pressure of the refrigerant and evaporation with the absorption of heat. The refrigerant and working fluids can be selected to have a broad range of operating pressures. If the refrigerant and working fluid are selected so that the atmospheric boiling point is the about the same as the highest operating ambient temperature, the chiller can operate with low, or even no internal pressure. The low operating pressures allow the use of light weight materials, easy fabrication, low cost and safety. This chiller is especially suited for using solar heated water, cooling water from internal combustion engines or any source of hot water. The chiller is easily scalable to any size and will find wide application for comfort air conditioning or food storage.

Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided which include tube and manifold configurations designed to promote separation of vapor phase and liquid phase fluid. The manifolds contain multichannel tubes of various end geometries designed to dispose flow channels at different heights within the manifold. Individual tubes also may be disposed at different heights within the manifold. The various flow channel and tube heights permit direction of vapor phase and liquid phase refrigerant to certain flow channels.

Abstract: An air conditioning system for a vehicle includes a compressor, a condenser, a first sub-cooler, a metering device, and an evaporator assembly. The evaporator assembly includes an evaporator and a second sub-cooler. The second sub-cooler is arranged below the evaporator such that water condensation from the evaporator drains onto the second sub-cooler to cool the second sub-cooler such that a temperature of the refrigerant exiting the second sub-cooler is less than a temperature of the refrigerant exiting the first sub-cooler.

Abstract: Service life of the compressor is extended. The evaporator is provided with the housing having the suction port connectable to the suction portion of the compressor in order to evaporate at least part of a droplet or misty working fluid in the housing by a suction effect of the compressor through the suction port, comprising a filter installed in the housing, the filter dividing a space in the housing into the first space for generating the droplet or misty working fluid and the second space for communicating with the suction port, the filter being inclined away from the suction port as advancing upward, and the filter transmitting therethrough vapor resulting from evaporation of the droplet or misty working fluid while capturing the droplet or misty working fluid.

Abstract: A split type potable water extractor from ambient air and water dispenser is invented, comprising separate water generating block located outside a water use area and water dispensing block located inside a water use area. The water generator block cycles refrigerant through a condenser and an evaporator to create condensation by heat exchange with ambient air circulated by an intake airflow system. The condensate water is collected and purified in a cascade of bactericidal loop to remove impurities. The purified water is pumped to a dispensing apparatus which can be installed in the home or other area of water use separate from the water generating block. If any one of the functional parts or units of water generator is disabled the water generator immediately stops operating to deliver water to the tank of the dispensing apparatus.

Abstract: A system for distributing a cooling fluid in a room containing at least one heat generating component includes a primary heat exchanger having an inlet for receiving the cooling fluid, a heat exchange section configured to facilitate exchange of heat between airflow in the room and the cooling fluid, and an outlet for exhausting heated cooling fluid from the heat exchange section. The system also includes a secondary heat exchanger having a receiving section connected to the second section of a cooling fluid line for receiving heated cooling fluid, a heat exchange section configured to facilitate exchange of heat between the at least one heat generating component and the heated cooling fluid, and an exhaust section configured to exhaust secondarily heated cooling fluid.

Abstract: An evaporator including a refrigerant inlet header having a refrigerant inlet at one end thereof, and a plurality of heat exchange tubes arranged at a spacing longitudinally of the inlet header and each having one end joined to the inlet header. The interior of the inlet header is divided by a flow dividing control wall into an upper space for admitting a refrigerant thereinto through the refrigerant inlet and a lower space communicating with the heat exchange tubes. The control wall has a communication hole formed in an end portion thereof opposite to the refrigerant inlet. The upper and lower spaces communicate with each other through the communication hole so that the refrigerant flows through the lower space in a direction opposite to the direction of flow of the refrigerant in the upper space. The evaporator achieves a high heat exchange efficiency.

Abstract: One embodiment comprises an apparatus with an evaporative unit for a refrigerant having a flow direction opposing the airflow direction and an adjustable airflow rate to utilize to produce both cold/dehumidified exit air and warmed exit refrigerant for high efficiency and to maintain an airflow sufficient to avoid freeze-up of evaporative unit or freeze-up to an extent that blocks the airflow. This may produce low humidity even when the room thermostat is set warm (e.g. 85F) and 5%-30% lower A/C bills. Other embodiments comprise systems and methods related to the adjustable airflow. A further embodiment comprises a controller to adjust the humidity in an air-conditioned space to produce air, which is both temperature and humidity controlled.

Abstract: A refrigerator and its operation method are disclosed. Cool air ducts guide cool air from a freezing compartment to an ice compartment that is positioned at a refrigerating compartment door. At least a portion of the cool air ducts are located at a barrier that separates the freezing compartment and the refrigerating compartment.

Abstract: The present invention discloses a refrigerator which can individually cool a freezing chamber and a refrigerating chamber by dividing a heat exchange region of an evaporator into a freezing chamber side region and a refrigerating chamber side region, forming individual circulation passages for supplying cool air from each region to the freezing chamber and the refrigerating chamber, and forming a freezing chamber fan and a refrigerating chamber fan on each circulation passage, and method for controlling operation of the same which can efficiently perform a cooling operation and reduce power consumption by effectively controlling the operations of each component.

Abstract: An heat exchanger for use in a vapor compression system is disclosed and includes a shell, a first tube bundle, a hood and a distributor. The first tube bundle includes a plurality of tubes extending substantially horizontally in the shell. The hood covers the first tube bundle. The distributor is configured and positioned to distribute fluid onto at least one tube of the plurality of tubes.

Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems, heat exchangers, and multichannel tubes are provided which include internal configurations designed to promote mixing. The multichannel tubes include interior walls which form flow channels. The interior walls are interrupted at locations along the multichannel tube in order to provide open spaces between the flow channels where mixing may occur. The mixing that occurs promotes a more homogenous distribution of refrigerant within the multichannel tubes.

Abstract: Disclosed is a grain refrigerator provided with a receiving container, a grain storage part installed in the receiving container, for storing a grain, and an evaporator forming a cooling cycle to keep the stored grain at a low temperature, wherein the evaporator is at least one or more and is installed in a grain storage space of the grain storage part to cool the stored grain.

Abstract: Provided is a refrigeration appliance including a fresh food compartment for storing food items in a refrigerated environment having a target temperature above zero degrees Centigrade. A freezer compartment is disposed at an elevation vertically below the fresh food compartment for storing food items in a sub-freezing environment having a target temperature below zero degrees Centigrade. The refrigeration appliance also includes one or more of a hand-removable insulated cover, a cool air duct for introducing cooled air adjacent an ice bin, and a rearward-sloped catch pan positioned to catch dripping water in said ice maker and direct the dripping water into a drain.

Abstract: A refrigerator is provided with an evaporator assembly located in a compartment. The evaporator assembly includes a pipe, a fan assembly, a plurality of fins, a first and second bracket. The pipe is configured to transport a refrigerant that exchanges heat with an air stream from the compartment. The plurality of fins is inserted on the pipe. The brackets each include apertures to receive bent end portions of the pipe. The brackets are configured to hold the pipe and the fins in a specific position, to mount the evaporator assembly within the compartment, and restrict the air stream exiting the evaporator assembly from mixing with the air stream entering the evaporator assembly. The fins include end fins that are placed in direct contact with the first end bracket and are configured to further restrict the air stream from flowing through the plurality of apertures of the brackets.

Abstract: A complete refrigeration system (CRS) including at least one heat exchanger which is designed to occupy an irregular volume to reduce the overall profile of the CRS. The heat exchanger may be a condenser or an evaporator, and includes a substantially solid body made of a thermally conductive metal, plastic, or other material. A plurality of fluid and refrigerant passageways are defined substantially within the solid body for conducing fluid and refrigerant, respectively, through the solid body and facilitating the transfer of heat between the fluid and refrigerant. Also disclosed is a method wherein the spatial orientation of each passageway is optimized with respect to all of the other passageways and the walls of the solid body by determining the relative distance of each passageway from all of the other passageways and the walls of the solid body at a plurality of points along each passageway, followed by adjusting the spatial orientation of the passageway accordingly.

Abstract: The present invention provides a cool air supplying apparatus for a refrigerator including a turbo fan configured to a grill forming a freezing space to blow cool air into the freezing space; and a shroud configured between a casing and the grill so as to cover the turbo fan and includes an opening part which sucks cool air, an orifice formed at an end of the opening part, an inclined part formed so as to incline toward the grill from one end of the orifice, and a flat part formed so as to be integrated with the inclined part and configured at a constant interval from the grill. Therefore, it is possible to increase the height of the blades of the turbo fan without increasing the total size of the refrigerator and causing resistance to the inflow of cool air.

Abstract: A heat exchanger has header tanks each including a header forming plate, a tube connecting plate, and an intermediate plate interposed between the two plates, the plates being arranged in superposed layers and brazed to one another. Each of the plates is made from a metal plate by press work. The header forming plate has an outward bulging portion. The tube connecting plate has tube insertion holes. The intermediate plate has communication holes causing tube insertion holes to communicate with the interior of each outward bulging portion therethrough. Heat exchange tubes have opposite ends placed into the respective insertion holes and brazed to the respective tube connecting plates. The heat exchanger including such header tanks is reduced in the number of components, can be fabricated with a high work efficiency, and exhibits improved heat exchange performance.

Abstract: A refrigeration device having an insulated interior in which at least one refrigerated component part, such as an evaporator, is located and wherein the surface of the component part has a tendency to ice up. According to an exemplary embodiment of the invention, the surface tending to ice up is provided with a coating comprising organic substances which restrict or limit the growth of ice crystals.

Abstract: A refrigerator includes a cabinet having a plurality of storage compartments and a cold air generating compartment provided in an upper portion of the cabinet. The cold air generating compartment is in communication with the plurality of the storage compartments and houses a plurality of evaporators, with each evaporator corresponding to a particular storage compartment in the cabinet.

Abstract: A refrigerating system is disclosed. Since heat exchange is performed between first and second evaporators by a heat exchanging unit, the first and second evaporators have temperatures similar to each other, thereby requiring no additional ‘pump-down’ operation. Also, a compressor does not have a discharge occurrence owing to no additional ‘pump-down’ operation, thereby having no loss and an enhanced reliability. Besides, since no additional pump-down operation is required, power consumption for operating the compressor so as to collect a remaining refrigerant is reduced. Accordingly, the efficiency of the refrigerating system is enhanced. Furthermore, as the ‘pump-down’ operation is not required, a backflow preventing unit for preventing a refrigerant collected from an evaporator from backflowing to the evaporator is not required. Accordingly, the fabrication cost is reduced.

Abstract: An evaporator assembly through which a refrigerant is circulated to transfer heat out of a volume of air in a housing in which the evaporator assembly is at least partially disposed. The evaporator assembly includes an evaporator in fluid communication with a compressor for compressing the refrigerant, a solenoid valve subassembly for controlling circulation of the refrigerant, a thermostat electrically connectable to the solenoid valve subassembly via a solenoid control circuit, one or more fans for circulating the air in the housing, and one or more fan motors for rotating the fans. Drive voltage supplied to the fan motors is controlled by a fan controller. The fan controller provides a first predetermined drive voltage to the motor drive when refrigerant is circulatable and a second predetermined drive voltage to the motor drive when refrigerant is non-circulatable.

Abstract: A combined cycle power plant includes a first generator driven by a gas turbine for generating electricity. The combined cycle power plant further includes a heat recovery steam generator disposed to receive exhaust gas from the gas turbine. The heat recovery steam generator includes an evaporator having tubes receptive to water flow therethrough. The tubes are disposed to be exposed to the exhaust gas, such that a flow of the exhaust gas passes around the tubes transfers heat from the exhaust gas to the tubes and thereby the water flowing through the tubes sufficient for the water to evaporate into steam. The tubes each having an outer surface with a plurality of deformations formed therein sufficient to introduce turbulence in the flow of the exhaust gas for enhancing heat transfer from the exhaust gas to the tubes.

Abstract: A refrigerator includes an air guide provided with a defrost water hole and inclined with respect to a centrifugal direction of a cold air fan. The air guide guides cold air discharged from the cold air fan to a guide duct and also guides, to the defrost water hole, defrost water falling in the centrifugal direction of the cold air fan.

Abstract: A refrigerator, in which an evaporator and a cold air fan are horizontally arranged in a cold air generating compartment positioned at an upper portion of the refrigerator. The evaporator and the cold air fan extend along a depth of the refrigerator in forward and rearward directions of the refrigerator.

Abstract: A refrigerator, in which a guide member is arranged at an inlet of a cold air generating compartment that houses an evaporator. The guide member uniformly distributes cold air introduced into the cold air generating compartment to upper and lower portions of the evaporator.

Abstract: In a refrigerator, cold air discharged from a cold air fan is guided by a guide member such that it flows directly to an evaporator. The guide member reduces flow of air through a gap between an inner surface of a cold air generating compartment and the evaporator. The guide member also includes a drainage portion configured to guide defrost water generated at the cold air fan to a position beneath the evaporator.

Abstract: An ionizer and an air conditioning system for automotive vehicles using the same are provided to reduce generation of positive ions detrimental to the human body to the greatest possible degree. The air conditioning system includes an air conditioning case, an evaporator for cooling an air blown through an internal passageway of the air conditioning case, and an ionizer including a negative ion discharge electrode and a positive ion discharge electrode for emitting negative ions and positive ions toward the evaporator. The electrodes are arranged on an upstream side of the evaporator in a spaced-apart relationship with each other. The positive ion discharge electrode has an ion generation portion formed in a smaller number than the number of an ion generation portion of the negative ion discharge electrode so that the quantity of positive ions generated in the positive ion discharge electrode can be smaller than the quantity of negative ions generated in the negative ion discharge electrode.

Abstract: An apparatus for reducing temperature of items includes an enclosure having an inlet and an outlet for the items within the enclosure; a conveyor for conveying the items within the enclosure from the inlet to the outlet; one or more delivery nozzles positioned to deliver gaseous cryogen and liquid or solid cryogen at supersonic velocity to the items on the conveyor. The apparatus delivers supersonic gaseous cryogen and fine liquid cryogen droplets onto the surface of food items to cool or freeze the food items.

Abstract: A heat generator includes an air-conditioning refrigerating system formed of a compressor, a discharge line, a condenser, a condenser liquid line, a liquid distributor, a spoiler such as metering device, an evaporator and a suction line, and a liquid delivering system. The discharge line has a head heat segment disposed in contact with a contact segment of the delivery segment for heat exchange to charge liquid passing through the delivery pipe into hot water or steam.

Abstract: Disclosed herein are a refrigerator capable of preventing frost from forming on an evaporator by mounting a dehumidifying unit and a recycling unit on both sides of the evaporator, respectively, and a controlling method thereof. Cold air in a storage chamber is dehumidified as the air passes through the dehumidifying unit and is sent to the evaporator. The cold air thermally exchanged in the evaporator is humidified as the air passes through the recycling unit and is sent to the storage chamber.

Abstract: A method and associated system is provided for cooling of a data center. The method includes providing coolant to multiple cooling elements in the data center using a heat pump refrigeration cycle to cool the coolant and provide a high temperature at the condenser. This allows the reclaiming of at least a portion of the heat removed from the refrigeration cycle using a heat engine. The engine is disposed between the refrigeration condenser and the ambient environment or cooling medium.

Abstract: A refrigerator, in which a main body includes a refrigerating chamber and a freezing chamber. A cold air generation chamber for the freezing chamber, a cold air generation chamber for the refrigerating chamber, and a machine room are provided on an uppermost part of the main body to allow for increased space in the refrigerating and freezing chambers.

Abstract: A refrigerator, in which a main body includes a refrigerating chamber and a freezing chamber. A cold air generation chamber for the freezing chamber is provided on an uppermost part of the main body, communicates with the freezing chamber, and houses a freezing chamber evaporator. A cold air generation chamber for the refrigerating chamber is provided separate from the cold air generation chamber for the freezing chamber and houses a refrigerating chamber evaporator.

Abstract: A heat transfer device includes a tube with a first fluid inlet and outlet and is arranged to form a plurality of parallel elongated segments. An enclosure defines a second fluid flow path over an exterior surface of the tube from a second fluid inlet to a second fluid outlet. A wall in the enclosure defines a first section of the second fluid flow path, which first section leads from the second fluid inlet and extends across a first portion of a length of all of the elongated segments of the tube. The wall further defines a second section of the second fluid flow path in the enclosure, which second section extends across a second portion of the length of all of the elongated segments of the tube and leads to the second fluid outlet. The interior wall is shaped and arranged such that a cross sectional area of the second fluid flow path in the enclosure changes along its length from the second fluid inlet to the second fluid outlet.

Abstract: There is provided a refrigeration apparatus (100). The refrigeration apparatus (100) includes a liquid suction heat exchanger (LSHX) (110) and a compressor (120). The LSHX (110) and the compressor (120) are formed as an integral module (150). Disclosed combinations include tandem compressors (151, 152) and multiple integral module configurations (185, 186).

Abstract: The present invention is a drainpipe heat exchanger to heat cold water using drainwater heat. A slit in a stiff exterior plastic sleeve with band clamps combine with internal hydraulic pressure to create a very high thermal contact force. Vertical and horizontal embodiments with and without protected heat storage are disclosed including a half jacket design for installation around operating drainpipes. A horizontal embodiment discloses a two-piece plastic-copper design. Double-wall construction and venting for visible leak detection satisfies plumbing code requirements. Use on vehicular or other combustion engine exhaust pipes is also contemplated.

Abstract: An evaporator includes a plurality of heat exchange tubes extending vertically and arranged in rows spaced apart from each other in a front-rear direction. A drainage acceleration member extending vertically is disposed between the adjacent front and rear heat exchange tubes. A gap is present between each of the adjacent front and rear heat exchange tubes, and the drainage acceleration member disposed between the front and rear heat exchange tubes. The gaps serve as drain channels. The evaporator exhibits excellent drainage of condensed water.

Abstract: A refrigerator is provided. The refrigerator may include an evaporator that generates cold air supplied to a refrigerating chamber and a freezing chamber, a first fan that supplies the cold air generated by the evaporator to a refrigerating chamber and a freezing chamber of the refrigerator, and a second fan that circulates the cold air within the refrigerating chamber.

Abstract: A liquid-vapor separating method and a liquid-vapor separating type evaporator, the method includes the following steps: (i) provide a partition device (3) in the upper portion of the evaporated liquid pipe, the partition device (3) divides the evaporated liquid pipe into a superheating section (12) and an evaporating section (13); (ii) a liquid-vapor separating pipe (4) is connected to the superheating section (12) near the partition device (3), an evaporated liquid feeding pipe (6) is connected to the evaporating section (13) near the partition device (3), several vapor guiding pipes (5) are respectively provided in the pipe of the evaporating section (13), the vapor guiding pipes (5) are respectively connected with the liquid-vapor separating pipe (4); vapor inside the pipe can flow out, and is separated into vapor and liquid in the liquid-vapor separating pipe (4), then the vapor enters the superheating section (12) and is superheated; the superheated vapor is discharged from a vapor outlet (11); (iii) th

Abstract: A dual refrigeration circuit watercooled chiller has its respective evaporators and condensers interconnected by waterboxes such that the first circuit tubes discharge into the respective waterbox and the flow of water then passes from the respective waterboxes to the respective evaporator/condenser tubes of the second circuit. Instrumentation is attached to the waterboxes to enable the measurement of the leaving temperature differential to provide improved control. Since the first and second circuit tubes are separate and independent, both serviceability and flexibility in design are substantially enhanced.

Abstract: A refrigerator that is capable of achieving smooth flow of cool air therein and improving cooling efficiency of a cooled evaporator (10) and a control method of the same that is capable of controlling operation time of an evaporator (10) and a fan (20), thereby improving cooling efficiency of the refrigerator are disclosed.

Abstract: The present invention relates to evaporators, and more particularly to an evaporator (10) having a duct integrated therewith, in which a circulating duct (20) and an evaporator (10) are mounted to an inner case like one body for reducing a performance deviation and working man-hours. To do this, the evaporator (10) having a duct integrated therewith includes an evaporator (10), and a circulating duct (20) including, a duct portion (30) for circulation of cold air, and a mounting portion (10) mounted to an inner case one body in a state the evaporator (10) is placed therein.

Abstract: A refrigerator includes a main body defining a compartment, the compartment having an access opening, a first wall and a heat exchanger supported by the first wall; a refrigeration system containing therein a working medium and including an evaporator which is disposed outside of the compartment for cooling the compartment; a door supported by the main body for selectively closing at least part of the access opening of the compartment; and a sub-compartment on the door and including a second wall with an opening. The heat exchanger is coolable by the working medium. The heat exchanger and the second wall are positioned so that when the door is in a closed position, the heat exchanger is exposed to an interior of the sub-compartment through the opening.

Abstract: An pulse electro thermal defrost evaporator system has multiple refrigerant tubes formed from an electrically conductive metal and connected in parallel for refrigerant flow. These tubes are, however, connected electrically in series. A controller is capable of detecting ice accumulation and connecting the tubes to a source of electrical power for deicing when it is necessary to deice the tubes. Embodiments having a manifold having multiple conductive sections insulated from each other are disclosed for coupling tubes electrically in series. Alternative embodiments with a single, long, wide-bore, tube are disclosed, as are embodiments having an evaporating pan coupled in series or parallel with the tubes, and embodiments with thermal cutoff and electrical safety interlocks.

Abstract: A heat exchanger includes an arrangement of refrigerant conveying heat exchange tubes and associated heat transfer fins and has an airflow inlet and an airflow outlet. A plurality of inlet guide vanes is disposed slightly upstream of the airflow inlet to the heat exchange tube arrangement so as to route incoming airflow through the heat exchange tube arrangement along a desired direction, in relation to the heat exchange tubes and associated fins, so as to improve drainage of accumulated condensate from the external surfaces of the heat exchange tubes and to enhance shedding of condensate from the surfaces of the heat transfer fins. Also, a plurality of outlet guide vanes can be disposed slightly downstream of the airflow outlet from the heat exchange tube arrangement.

Abstract: A liquid refrigerant drainage mechanism is described for use in a flooded evaporator to mitigate liquid carryover. The drainage mechanism can trap liquid refrigerant droplets, create a liquid column to overcome a pressure difference across the mechanism and drain liquid back to the pool in the evaporator. The drainage mechanism is disposed in a suction baffle, and has a mesh pad and a tapered pipe secured to the bottom of the baffle. The pipe has a drainage aperture at one end to allow the accumulated liquid refrigerant to return to the refrigerant pool below. The mesh pad helps to separate liquid droplets that coalesce and fall into the tapered pipe. By using this liquid drainage mechanism in conjunction with a suction baffle, liquid carryover can be reduced and chiller performance improved.

Abstract: An evaporative cooler for cooling a gas stream, in particular an air stream, including a number of cooling elements located in a flow channel, is provided. A liquid, preferably water, is supplied by a feed device and will be vaporized or evaporated. In one aspect, the surface of at least one of the cooling elements has hydrophilic properties, at least in one sub-region designed to form a liquid film.