Abstract: A heat transfer system includes a water line for carrying water having a first predetermined flow direction and a refrigerant line for carrying a refrigerant and having a second predetermined flow direction opposite the first predetermined flow direction. The heat transfer system includes a refrigerant evaporator, a vapor compressor, a condenser, and an expansion device. Refrigerant is passed through the refrigerant evaporator as a liquid and is warmed to a cooled gas. The refrigerant is heated to a superheated gas in the vapor compressor, and cooled to a warm liquid in the condenser. The refrigerant is cooled to a bi-phase liquid in the expansion device and is then passed to the refrigerant evaporator. Water enters the refrigerant condenser and heat is exchanged between the refrigerant and the water to warm the water to a predetermined water temperature. The water exits the refrigerant condenser and is passed to the water storage member at a predetermined temperature.

Abstract: A condensation system is disclosed where a multi-component fluid is condensed to form a condensate, a portion of which is sub-cooled and mixed with non-condensable vapor in the system to reduce the accumulation of non-condensable vapor and to improve the stability and efficiency of the condensation system.

Abstract: An air conditioning system for circulating a refrigerant includes a condenser having a vapor inlet for condensing the refrigerant into a high-pressure liquid having a first predetermined temperature. A heat exchanger including an exhaust channel directs air therethrough. The heat exchanger further includes a refrigerant inlet in fluid communication with a refrigerant outlet for receiving a high-pressure liquid and for delivering the high-pressure liquid therethrough. Furthermore, a heat mass exchanger outputs wet working air having a second predetermined temperature. The heat exchanger is in fluid communication with the heat mass exchanger for receiving the working air having a temperature less than the high-pressure liquid. The working air flows through the exhaust channel and over the high-pressure liquid to transfer heat from the high-pressure liquid to the working air for reducing the temperature of the high-pressure liquid.

Abstract: A refrigeration system includes an evaporator, a compressor compressing a refrigerant coming out of the evaporator, a condensing unit which includes a finned tube guiding the refrigerant from the compressor back to the evaporator; and an energy saving arrangement. The energy saving arrangement includes a water-cooling device frequently introducing a predetermined amount of water to a surface of the finned tube to water-cool the refrigerant within the finned tube for enhancing a cooling efficiency of the condensing unit while being energy efficient. The energy saving arrangement further includes a metering device for controllably pumping the refrigerant from the condensing unit to the evaporator especially when a pressure inside the condensing unit is lower than a threshold pressure.

Abstract: A condenser for a motor vehicle air-conditioning circuit includes a multitude of stacked main-section plates assembled to delimit first flow channels for a refrigerating fluid which alternate with second flow channels for a cooling fluid. The condenser includes at least two passes over the refrigerating fluid. The condenser also includes at least one condenser inlet and one condenser outlet for refrigerating fluid. The condenser also includes an inlet pass over the refrigerating fluid communicating with the condenser inlet and an outlet pass communicating with the condenser outlet. The cross section of the passes diminishes from the inlet pass towards the outlet pass.

Abstract: The invention concerns a condenser consisting of stacked plates (2) provided each with a raised peripheral edge (3) in sealed assembly to define flow channels between the plates for a refrigerating fluid (F1) and a cooling fluid (F2). The plates comprise communicating passageways (124) for the passage of the refrigerating fluid and the cooling fluid from one flow channel to the other. Annular ducts (122) are provided opposite the communicating passageways to prevent the fluids from being mixed. A bottle (100) is interposed between a cooling section (94) and sub-cooling section (96). The invention is applicable to motor vehicles.

Abstract: A mass and heat exchanger includes at least one first substrate with a surface for supporting a continuous flow of a liquid thereon that either absorbs, desorbs, evaporates or condenses one or more gaseous species from or to a surrounding gas; and at least one second substrate operatively associated with the first substrate. The second substrate includes a surface for supporting the continuous flow of the liquid thereon and is adapted to carry a heat exchange fluid therethrough, wherein heat transfer occurs between the liquid and the heat exchange fluid.

Abstract: A cooling system for transferring heat from a heat load to an environment has a volatile working fluid. The cooling system includes first and second cooling cycles that are thermally connected to the first cooling cycle. The first cooling cycle is not a vapor compression cycle and includes a pump, an air-to-fluid heat exchanger, and a fluid-to-fluid heat exchanger. The second cooling cycle can include a chilled water system, or a vapor compression system, for transferring heat from the fluid-to-fluid heat exchanger to the environment. The pump circulates the vaporizable refrigerant to the evaporator device associated with the air stream within the rack or enclosure. The heated air causes the refrigerant to evaporate within the evaporator device. This evaporated refrigerant travels to a condenser device cooled by another thermally cooler fluid, causing the refrigerant to condense back to a liquid, return to the pump, and begin the cycle again.

Abstract: An electrohydrodynamic (EHD) condenser device includes a condenser installed with an EHD electrode. An electric field is generated upon a fluid of low conductivity inside a compressor device and an enhanced thermal conduction effect is then achieved since the electric field induces current convection, migration and deformity of bubble, increases perturbation and mixture of the flow field and eliminates boiling and delay. With the EHD utilized, size, weight, cost and required refrigerant amount of the condenser device are reduced. Further, thermal conduction efficiency of the alternative refrigerant is improved, making the EHD compensator device in compliance with associated refrigerant regulations made by CFC and achieve the purposes of environmental protection and energy saving.

Abstract: A modularized high efficiency cooling device in a cooling mechanism, which includes at least one exchanger, at least one gas cooling device, at least one water cooling unit, at least one chiller unit, at least one chiller pump and at least one pair of copper tube. The cooling device adopts modularized design so that it can be assembled to form different units according to consumer demands and has an effect of frequency conversion. The assembled unit can be installed in different places. One machine of the cooling device can be maintained individually as well as the other machines of the cooling device that are in use normally. This reduces maintenance fees and is convenient.

Abstract: A cooling system cools the air for a cab of a vehicle. The system includes a compressor and/or an evaporator, a condenser, an air guidance system and connecting lines. The condenser can be connected with the compressor or the evaporator by means of the connecting lines. Air for the cooling of the condenser can be conducted to the condenser by means of the air guidance system. The condenser installed in a limited or reduced construction volume and is located close to the cab without increasing the dimensions of the engine hood.

Abstract: The present invention provides a heat exchanger capable of circulating a given amount of refrigerant without being affected by an operation state of a heat pump cycle. The heat exchanger comprises a liquid chamber in which liquid is stored, and a refrigerant chamber disposed in the liquid chamber. The heat exchanger also comprises a liquid supply port for supplying the liquid to the liquid chamber, a liquid discharge port for discharging the liquid in the liquid chamber, a refrigerant supply port for supplying the refrigerant to the refrigerant chamber, and a refrigerant discharge port for discharging the refrigerant in the refrigerant chamber. A liquid refrigerant storing section having a predetermined capacity in the refrigerant chamber and storing the liquid refrigerant is formed in the heat exchanger.

Abstract: Disclosed is a condensing system which can selectively provide cooperative operation of an air cooling condenser with a water cooling condenser or an evaporative condenser according to variation of ambient air temperature, coolant pressure and condensing load. The water cooling condenser is disposed between a compressor and the air cooling condenser, and includes a coolant pipe, a water passage for enabling water to flow therethrough to have heat exchange with coolant in the coolant pipe, an inlet pipe and an outlet pipe connected with the water passage of the water cooling condenser for automatically feeding and discharging water in a direction reverse to a flowing direction of coolant and a control valve installed in the inlet side of the inlet pipe for automatically controlling water feed to the water passage according to ambient air temperature, coolant pressure and condensing load.

Abstract: This invention provides a condenser for a refrigerating machine which can improve the condensation characteristics by eliminating the accumulation of the condensed refrigerant in the condenser vessel. The condenser comprising the vessel 14 and a group of heat exchanger tubes 15 disposed in the vessel is used for condensing and liquefying the gaseous refrigerant by heat exchange between the gaseous refrigerant and cooling water circulating in the heat exchanger tubes. The condenser is constituted such that accumulated liquefied refrigerant is removed by forming one or a plurality of spaces in the area wherein the heat exchanger tubes are disposed.

Abstract: A galley chiller system for an aircraft includes at least one condenser having a refrigerant fluid. The fluid within the condenser rejects heat to a first surrounding environment. To more efficiently use the condenser of the galley chiller system and reduce the requirement on other cooling systems within an aircraft, the condenser may reject its heat to a desired location using a heat exchanger. The galley chiller system includes at least one evaporator that receives fluid from the condenser. A first evaporator absorbs heat from a galley, which may include a bank of carts. The first evaporator is arranged in ducting that carries cooled air to the carts. A second evaporator may absorb heat from a cabin recirculation air duct of the aircraft cooling system. In this manner, the evaporators of the inventive galley chilling system cools not only the galley carts but also provides supplemental cooling to the aircraft cooling system thereby reducing its cooling requirements.

Abstract: A system and method for cooling air includes using a refrigerant cooling system and further using a refrigerant liquefaction subsystem or method that includes using a heat sink cooler (“pre-cooler”) to cool the heat sink coolant before it is used to cool the refrigerant in the condenser. One aspect of the refrigerant liquefaction subsystem may use a water mist, which may be prepared by atomizers, high pressure nozzles, piezo-electric ultrasonic nebulizers, or the like, to cool the heat sink coolant.

Abstract: Refrigerant is circulated through a vapor compression system including a compressor, a condenser, an expansion device, and an evaporator. Cold condensate forms on the evaporator surfaces as the refrigerant accepts heat from an air stream. The cold condensate drips down from the evaporator coil and collects in a condensate pan. In one example, the cold condensate is directed into a condensate heat exchanger to subcool the refrigerant exiting the condenser. In another example, the refrigerant exiting the condenser flows through a refrigerant line located in the condensate pan. In another example, the cold condensate is sprayed on the refrigerant line exiting the condenser or on the subcooling portion of the condenser. By utilizing the condensate for further subcooling of the refrigerant, system capacity and efficiency are enhanced. Various control techniques and condensate flow methods are also disclosed.

Abstract: An ice maker for marine vessels having an evaporator assembly within which ice is formed for delivery to remote locations. An air and water cooled condensing unit delivers refrigeration fluid to the evaporator assembly and ice formed therein is driven by an auger into a distribution chamber defined by a distribution cap member located above the auger. Ice entering the distribution chamber passes through a comminution ring which breaks the ice up into smaller particles and the ice is then directed radially by a slanted wall into the blades of an impeller member which rotates about the same axis as the auger and which drives the ice particles into a discharge opening formed in the ice distribution cap. The evaporator assembly and the condensing unit are mounted separately so that the evaporator assembly may be located to reduce the path through which the ice must travel to reach its ultimate destination.

Abstract: In a high-pressure side heat exchanger for a vapor compression refrigerant cycle, a refrigerant passage is formed such that a flow area (S), a length (L), and an equivalent diameter (d) satisfy the conditional expression 0.04×e?1.8d?S/L?2.1×e?1.8d. The flow area (S) is obtained by dividing the product of a total cross-sectional area of the passages in one tube and the number of tubes by the path number. The length (L) is a flow distance of the refrigerant from the refrigerant inlet to the refrigerant outlet. That is, the length (L) is obtained by the product of the length of the tube and the path number. The diameter (d) is obtained by dividing the product of four and the cross-sectional area of the passage by a circumference of the passage.

Abstract: A heat exchanger with a receiver tank is provided with a multi-flow type heat-exchange body (10), a receiver tank (3), a block flange (4) having a side surface connected to the periphery of a condensing portion outlet of the heat exchanger body (10) and an upper en to which a lower end of the receiver tank (3) is attached and a bracket (6) for supporting the upper part of the receiver tank (3) to the heat exchanger body (10). A flange-shaped pressing stepped portion (31a) is formed on the upper periphery of the tank main body (31) of the receiver tank (3). The bracket (6) is provided with a joint portion (61b) to be secured to the peripheral surface of one of headers (11) and embracing portions (61a) and (62a) that surround the periphery of the tank main body (31) and are engaged with the upper side of the pressing stepped portion (31a) to downwardly press the receiver tank (3).

Abstract: A system and method for cooling air includes using a refrigerant cooling system and further using a refrigerant liquefaction subsystem or method that includes using a heat sink cooler (“pre-cooler”) to cool the heat sink coolant before it is used to cool the refrigerant in the condenser. One aspect of the refrigerant liquefaction subsystem may use a water mist, which may be prepared by atomizers, high pressure nozzles, piezo-electric ultrasonic nebulizers, or the like, to cool the heat sink coolant.

Abstract: A Thermal Energy Heat Exchanger, is an air conditioning system, for the exterior unit of a fully assembled and installed heat pump and, or, air conditioning system, by means of a water refrigerant, from a source of water, such as, but not limited to a river, a lake, a pond, a swimming pool, a well, a creek, or an ocean; wherein a flow of water is circulated from the source of water by means of a water pumping device, 25A, under a controlled water pressure 25B, through an intake system of piping 25C, to a plurality of evaporator coils, positioned so as to surround the exterior unit by means of attachment to the inner chamber section of a protective cover enclosure, and through the plurality of evaporator coils, to an Outlet water disposal piping system, 25D; being in effect a heat pump and, or, air conditioner for the exterior unit of a fully assembled and installed heat pump and, or, air conditioning system, by means of a water refrigerant.

Abstract: An air conditioner condensing coil cooling system comprising an evaporating unit inside a house having an evaporating coil for evaporating a refrigerant liquid and a condensing unit remote from the evaporating unit located outside the house having a condensing coil for cooling refrigerant gas into liquid refrigerant. A condensate collector included in the evaporating unit for collecting condensate that condenses on the evaporating coil. A drain line extending from the condensate collector out of the house and connecting to a pump outside the house for drawing the condensate through the drain line. A manifold positioned adjacent the condensing coil connected to the pump for receiving condensate from the condensate collector through the drain line. The pump forcing condensate through spray holes in the manifold to provide a pressurized spray of condensate being applied onto the condensing coil.

Abstract: The subject invention pertains to a method and apparatus for cooling. In a specific embodiment, the subject invention relates to a lightweight, compact, reliable, and efficient cooling system. The subject system can provide heat stress relief to individuals operating under, for example, hazardous conditions, or in elevated temperatures, while wearing protective clothing. The subject invention also relates to a condenser for transferring heat from a refrigerant to an external fluid in thermal contact with the condenser. The subject condenser can have a heat transfer surface and can be designed for an external fluid, such as air, to flow across the heat transfer surface and allow the transfer of heat from heat transfer surface to the external fluid. In a specific embodiment, the flow of the external fluid is parallel to the heat transfer surface.

Abstract: A system for providing coolant to a heat load includes a first coolant reservoir providing coolant to the heat load and a second coolant reservoir receiving used coolant after passing through the heat load. The used coolant is refreshed by a cooling apparatus which receives the used coolant from the second coolant reservoir, cools the used coolant, and supplies refreshed coolant to said first coolant reservoir. The resulting dual reservoir system offers significant reductions in the size, weight and power of the vapor cycle system (VCS) equipment while providing for accurate temperature control of the coolant delivered to the heat load.

Abstract: A system for shielding sparks generated by a compressor in a marine air conditioning system is disclosed. The components of the compressor clutch are modified and a cap encapsulates the components that can generate sparks. In particular, the outer edges of the hub and of the pulley are designed to closely receive the cap. The diameter of the hub is smaller than that of the pulley so that the cap rotates with the pulley without contacting the hub. The cap is joined to the pulley by interference fit and always rotates with the pulley. Any sparks generated by contact between the hub and the pulley are completely contained within the cap to prevent ignition of any gas fumes present in the vicinity of the compressor.

Abstract: A built-in refrigerator is disclosed. The built-in refrigerator includes: a main body installed in a sink and having a door at a front side thereof and a machine room at a rear lower side thereof; condenser and compressor respectively installed in the machine room; a cooling fan installed in the machine room, for cooling the condenser and the compressor; and a radiation passage allowing an outside of a front side of the main body to communicate with the machine room to introduce external air into the machine room and discharge internal air of the machine room.

Abstract: An evaporative condenser system has an air handler with an input end and an output end with a fan to facilitate the movement of the air. An air cooler has at least one conical spiral coil having a top end and a bottom end, each with linear extents in the output ends and the input ends of the air handler. A pump moves a working fluid through the coil. A cooling water pathway has a water recycle input and a reservoir for the cooling water adjacent to the bottom end of the air cooler coils. The reservoir has a submersible sump pump for moving the cooling water to an elevated location with a sprayer.

Abstract: First, a system for providing liquid refrigerant subcooling, subsequent to that subcooling accomplished by the primary condenser of an ice machine, by means of utilizing cold harvest and/or melt water discharge from said ice machine. Subcooling heat exchange to be accomplished by directing and controlling the flow of said harvest and/or melt water through some type of refrigerant to fluid heat exchanger, or by a passive heat sink method whereby the liquid refrigerant subcooler sits in a non-pumped open reservoir that overflows at each harvest cycle. This would provide greater refrigeration capacity to the ice machine system.

Abstract: A condenser and fan assembly for a refrigerator is described. In an example embodiment, the assembly comprises a baseplate, a condenser, and a baseplate mounting bracket secured to the condenser for mounting the condenser to the baseplate. The assembly further comprises a fan subassembly comprising a fan motor, a fan blade hub, a plurality of fan blades extending from the fan blade hub. The hub is coupled to the fan motor, and a shroud positioned over the fan blades. A bracket is secured to the shroud. A fan mounting bracket is secured to the condenser for mounting the fan subassembly to the condenser. Specifically, the fan mounting bracket mates with the fan subassembly bracket.

Abstract: The present invention relates to a dual phase condenser system, including an air-cooled portion, a water-air-cooled portion and a fan. The air-cooled portion can be further divided into two sectors, wherein the external air, drawn by the fan, passing through the second sector of the air-cooled portion first then to the water-air-cooled portion. The ability of air absorbing water vapor can be increased significantly in the water-air-cooled portion due to the increase of vapor pressure deficit (VPD) of the air passing through the air-cooled portion of the condenser. The dual phase condenser system of this invention is a 3-stage air-cooled condenser when shortage of water occurred. By separating gaseous and liquid refrigerants, the ability of removing thermal energy of the refrigerants can be increased. This invention required no extra fans, thus the EER can be increased when compared with the traditional one stage or patented two-stage air-cooled condenser.

Abstract: A heat pump system (10) includes a fluid refrigerant compressor (12) and heat exchanger units (14, 16). Heat transfer tubings (36, 50, 58, 60, 66, 82) interconnect the fluid refrigerant compressor (12) and the heat exchanger units (14, 16) in a series relationship for carrying refrigerant fluid. Flow control valves (22, 24) are provided and are interconnected between a treated waste effluent source (20) such as a municipal or private treated waste effluent supply or reservoir and the heat exchanger unit (16) for controlling the amount of water flowing from the treated waste effluent source (20) to the heat exchanger unit (16). The flow control valves (22, 24) are responsive to the pressure at the outlet (12b) of the fluid refrigerant compressor (12) sensed at port (26) in the heat transfer tubing (58) to automatically optimize the operating condition of the heat pump system (10).

Abstract: A condenser is provided that makes a liquid droplet of a liquid phase medium drop effectively, the liquid phase medium residing in a lower end opening of a medium passage of the condenser, thereby preventing any degradation in the performance of the condenser. In the condenser, vapor, which is supplied to a cooling pipe (14) connected to cooling fins (16), is cooled, condensed into water, and recovered in a water-collecting tray (21) provided beneath the cooling pipe (14), and a needle-shaped member (24) provided so as to face the lower end opening of the cooling pipe (14) ruptures the droplet that, due to surface tension, resides in the lower end opening of the cooling pipe (14) and makes it drop into the water-collecting tray (21).

Abstract: A condenser includes a cooling section having a plurality of vapor passages to convert vapor into water, a blower for drawing water produced in the vapor passages out of the vapor passages, and a recovery section for receiving the drawn-out water. Thus, the water produced in the vapor passages in the cooling section can be prevented from occluding the vapor passages.

Abstract: A condenser and fan assembly for a refrigerator is described. In an example embodiment, the assembly comprises a baseplate, a condenser, and a baseplate mounting bracket secured to the condenser for mounting the condenser to the baseplate. The assembly further comprises a fan subassembly comprising a fan motor, a fan blade hub, a plurality of fan blades extending from the fan blade hub. The hub is coupled to the fan motor, and a shroud positioned over the fan blades. A bracket is secured to the shroud. A fan mounting bracket is secured to the condenser for mounting the fan subassembly to the condenser. Specifically, the fan mounting bracket mates with the fan subassembly bracket.

Abstract: A refrigerator condenser system includes an integral condenser coil and hot gas loop embedded in a floor and a vertical wall of a refrigeration compartment to increase heat transfer efficiency to ambient air. The condenser system is cast in place within the refrigerator cabinet to form a reliable, high efficiency, maintenance free refrigerator condenser system.

Abstract: An evaporator for a refrigeration chiller includes a tube bundle in which at least a portion of the tubes of the tube bundle are immersed in a pool which include both liquid refrigerant and is lubricant. Liquid refrigerant and lubricant are deposited into the pool at a first pool location. Because of the vaporization of refrigerant that occurs within the pool, a pattern of flow is established and managed that causes the lubricant in the pool to migrate from the location of its deposit into the pool to a second pool location. An outlet is provided at the second pool location from which lubricant is drawn out of the evaporator.

Abstract: The present invention relates to a refrigerant condenser for motor vehicle air-conditioning systems of the type that include a tube/fin block, header tubes arranged on both sides of the tube/fin block and a collector arranged parallel to one header tube, wherein the header tubes have partitions for creating a multi-pass flow of the refrigerant, and the tube/fin block has an upper condensation region and a lower supercooling region. The collector is flow-connected via passage orifices to the condensation region, on the one hand, and to the supercooling region, on the other hand. The collector has approximately the same diameter or the same cross section as the adjacent header tube, and an additional container of larger cross section or larger diameter is provided for storing refrigerant and/or for receiving a dryer and/or filter.

Abstract: Disclosed is a refrigerator incorporating a condenser functioning as a backcover. The condenser is provided in one portion of the outer periphery of a machine room in a lower portion of the refrigerator while the machine is closed in other portions of the outer periphery so that air flow to/from the machine room is enabled only through the condenser to enhance cooling efficient and thus condensing efficient.

Abstract: Method for operating refrigerating plants in which a thermal coupling of an electromotively and/or mechanically driven compression refrigerating plant with a thermally supplied refrigerating plant takes place in such a way that the compression refrigerating plant condenser is cooled by the thermally supplied refrigerating plant.

Abstract: A condenser for condensing and liquifying a refrigerant by inducing the refrigerant into a receptacle (14), in which cooling water is fed through a plurality of thermal transmission pipes (15) which are arranged in bundles. A plate body (20) is provided between the bundles of the thermal transmission pipes, and slopes diagonally downwardly when viewed in cross-section from the direction of the length of the thermal transmission pipes. Consequently, the refrigerant falling toward the thermal transmission pipes at low positions is led diagonally downwardly by the plate body, so that the liquid film of refrigerant which adheres to the surfaces of the thertmal transmission pipes does not become too thick, thereby preventing reduction in the thermal transmittancy of the thermal transmission pipes.

Abstract: An air conditioner having functions of fire preventing, smoke exhausting and water spraying includes a sensor for sensing smoke or temperature so as to control operation of a wind-releasing gate, a smoke-exhausting gate, a water-spraying nozzle, and an alarm. When the sensor senses dense smoke or high temperature, smoke is quickly sucked through a wind inlet in an air conditioning box, the smoke-exhausting gate and out of a smoke outlet. At the same time, the water-spraying nozzle is started to spray water and the alarm to give out warning sound, elevating public safety.

Abstract: The present invention comprises a modular unit in which all of the components necessary for conditioning the intake air for a combustion gas turbine are contained. The compressors, evaporators condensers and related pumps and control equipment are contained within a weather proof enclosure having sound insulation installed in the walls. The intake air conditioning system includes three loops, a compressed refrigerant loop, a chilled water loop and a condenser cooling water loop with an optional heating loop. The modular unit provides a three loop cooling system for easy connection to both a combustion gas turbine air inlet and to a cooling water tower. The loops comprise a refrigerant loop, a cooling water loop and a chilled water loop and in one embodiment a heating loop to heat the air going to the turbine.

Abstract: In a condenser for an air-conditioning system, in particular for an air-conditioning system of a motor vehicle, there is provision for a collector (15) to be formed from a plurality of series-connected tubes (18) which extend between header tubes (10, 11) and the cross section of which is a multiple of the cross section of the flat tubes (13).

Abstract: A multi-stage cooling system is disclosed. The multi-stage cooling system is capable of providing a plurality of cooling capacities. The cooling system has a plurality of independently operable compressors. A control system operates the compressors to provide a cooling capacity corresponding to the heat load of a space to be cooled. A condenser structure of the cooling system has a plurality of individual condenser coils. Each condenser coil has an independent refrigerant path receiving compressed refrigerant from one of the compressors. An evaporator structure of the cooling system has a plurality of individual evaporator coils. Each evaporator coil has an independent refrigerant path receiving condensed refrigerant from a corresponding condenser coil via an expansion mechanism and returning refrigerant to an input of a corresponding compressor.

Abstract: A system for providing liquid refrigerant subcooling, subsequent to that subcooling accomplished by the primary condenser of an ice machine, by means of utilizing cold harvest and/or melt water discharge from said ice machine. The subcooler is connected in fluid communication with the output of a pump that pumps stored ice machine discharge water to directly flow through the subcooler from a bottom portion to a top portion in a counter-flow direction and then to discharge such that the subcooler utilizes the pumped and flowing cold discharge water from the ice machine for providing maximum available subcooling to the liquid refrigerant of said ice machine.

Abstract: A condenser includes a pair of headers 11 and a plurality of heat exchanging tubes 12 disposed between the headers 11 with their opposite ends connected to the headers 11. The plurality of heat exchanging tubes 12 are grouped into three paths P1-P3 by partitions 16. A refrigerant introduced from a refrigerant inlet 11a provided at the lower portion of one of headers passes upwardly through the paths P1-P3 in sequence, and flows out of a refrigerant outlet 11b provided at an upper portion of one of headers. The cross-sectional area of each path decreases stepwise towards a downstream side path, and the reduction rate of the cross-sectional are of the downstream side path of the adjacent two paths to the cross-sectional area of the upstream side path thereof is set to 20%. Thereby, the cooling performance can be achieved.

Abstract: The present invention provides a condenser for condensing and liquifying a refrigerant by inducing the refrigerant into a receptacle (14), in which cooling water is fed to through a plurality of thermal transmission pipes (15) which are arranged in bundles. A plate body (20) is provided between the bundles of the thermal transmission pipes, and slopes diagonally downward when viewed in cross-section from the direction of the length of the thermal transmission pipes. Consequently, the refrigerant falling toward the thermal transmission pipes at low positions is led diagonally downward by a the plate body, so that the liquid film of refrigerant which adheres to the surfaces of the thermal transmission pipes does not become too thick, thereby preventing reduction in the thermal transmittancy of the thermal transmission pipes.

Abstract: An energy,, transfer system is provided for a household or commercial refrigeration appliance. The energy transfer system includes a fluid passage disposed in the housing of the appliance for enabling the transfer of a fluid into, through, and out of the housing. The fluid is circulated through a heat exchanger which can be disposed outside of a home or commercial building or underground so that the fluid is cooled by the outside air or by the ground. The cooling fluid is also utilized to cool the compressor of an air conditioning unit. A heat exchanger is also utilized for transferring heat from the cooling fluid to an interior of a building.

Abstract: A subcooling unit within a vapor compression refrigerant system contains a controller for controlling the rate of flow of refrigerant into the chamber of the subcooling unit. The controller receives a sensed temperature of the fluid entering a condensing unit within the chamber of the subcooling unit and computes a condensing pressure setpoint for the refrigerant flowing into the chamber of the subcooling unit. The controller is operative to compare the pressure in the subcooling chamber with the condensing pressure setpoint so as to determine whether to possibly increase or decrease the rate of flow of the refrigerant into the chamber of the subcooling unit.