Abstract: The heat exchange apparatus and method is provided with an indirect evaporative heat exchange section and a direct evaporative heat exchange section. An evaporative liquid is sprayed downwardly into the direct evaporative section to directly exchange heat from the evaporative liquid flowing across fill sheets. The evaporative liquid is then collected in a re-spray tray. The collected evaporative liquid is then sprayed onto an indirect evaporative heat exchange section to indirectly exchange sensible heat from a fluid stream flowing within a series of enclosed circuits comprising the indirect evaporative heat exchange section.

Abstract: The present invention relates to a front suction/discharge type outdoor unit for an air conditioner to provide an economical installation structure for efficiently installing a large capacity outdoor unit and provide services for easily transferring the outdoor unit, and examining, exchanging and repairing its components, by separating a suction casing and a discharge casing. The front suction/discharge type outdoor unit includes an outdoor unit suction casing having its one surface externally opened, and sucking external air for heat exchange, and an outdoor unit discharge casing being separated from or coupled to the outdoor unit suction casing, sucking external air through the outdoor unit suction casing, having its one surface externally opened, and discharging heat exchanged external air. Here, opened surfaces are respectively formed in the outdoor unit suction casing and the outdoor unit discharge casing to connect them to discharge the sucked external air.

Abstract: The invention is an air conditioning unit 10 consisting of a housing 11 having at least one air inlet 21 for receiving air to be conditioned and at least one outlet 19 for discharging conditioned air, at least one fan 24 for moving air from the inlet 21 to the outlet 19, an air to air heat exchanger 26 of the type that cools the air by diverting and cooling a portion of the air through an evaporative cooling means, heat exchange occurring across a plurality of barriers 27 between the evaporatively cooled air and said incoming air, a vapor compression-type cooling system having an evaporator coil 54 through which the outlet stream of air passes for further cooling of the outlet air, a condenser coil 55 through which the evaporatively cooled air, stream that exits the air to air heat exchanger 26 passes, and a control system 60 that at least determines the temperature of the room 12 air and controls the operation of the air-conditioner to operate only the air to air heat exchanger 26 when the temperature is mai

Abstract: A method and apparatus for cooling an air conditioning system's condensing coils utilizing an air filter pad made of glass fibers with self contained, perforated water capillary tubes allowing moisture to permeate the filter pad. The filter pads may be connectable in series and provided with integral mounting strips for fixed or magnetic, internal or external attachment to the condensing unit. Special adaptive solenoids are also provided to allow for minimum flow of water over long periods of time. Dual sensors are provided connected to both the high and low side of the compressor for sensing compressor temperature status and switching the solenoid on and off, thereby preventing freezing of the compressor. A unique method for applying chilled water to the capillary tubes by coiling the capillary tube around the suction line of the compressor is utilized.

Abstract: A stand-type air conditioner including a casing having at least two air discharge openings and an air suction opening, and a blower fan installed therein. Also included are at least two heat exchangers positioned adjacent to the air discharge openings, respectively, in the casing for exchanging heat with air to be discharged through the air discharge openings. Further, at least one of the air discharge openings is located at a lower portion of the casing in the vicinity of the ground for discharging air near the ground. By discharging cold air from an upper side during the cooling operation and hot air from a lower side during the heating operation, the cold air or the hot air can be evenly distributed to the room. Accordingly, uniform cooling/heating can be realized to thereby significantly increase reliability and efficiency of a product.

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: A refrigeration unit using ammonia aimed to reduce the amount of charged ammonia, and to establish a measure to render leaked ammonia gas harmless, is provided. The ammonia chiller unit comprises a compressor, a compressor driving motor, an evaporation type condenser, an expansion valve, an evaporator to perform refrigerating cycle using ammonia as a refrigerant. The unit is composed of a lower construction body comprising a compressor, a motor for driving the compressor, a control board, a brine cooler to function as an evaporator, a brine pump, a water tank, a sprinkler pump, etc., and an upper construction body comprising a drain pan and an evaporation type condenser located above the drain pan. The evaporation type condenser is composed of a multitubular heat exchanger having at both end sides an inlet and outlet headers, ammonia refrigerant flowing in one direction, and the multitubular heat exchanger is incline downward from the inlet side toward the evaporator.

Abstract: A heat rejection apparatus includes an object conducting heat to be rejected, with an absorptive material on the outside of the object. A water system deposits water on the absorptive material to wet the material to absorb heat from the object by water evaporation. A collector below the object directs excess water to a drain. An air delivery system directs air over the absorptive material on the object. The water system supplies enough water to keep the absorptive material wet, even with the evaporative losses of water, and carry dissolved solids to the collector.

Abstract: A portable, monoblock air conditioner including an evaporator positioned over a condenser, the condenser including heat transfer fins, and a partition positioned between the evaporator and the condenser, the partition formed with openings arranged for condensate to flow from the evaporator over the heat transfer fins of the condenser, wherein there are more than one of the openings over each heat transfer fin. Adjacent rows of openings over the heat transfer fins may be staggered with respect to each other. The heat transfer fins may have a hydrophilic coating.

Abstract: A cooling system which utilizes a movable frame positioned within a duct. The moveable frame has an evaporative pad and where a nozzle is positioned to spray water onto the evaporative pad such that the weight of the water causes the frame to move to a lower position, thereby shutting-off the water flowing to the nozzle. As the water in the evaporative pad evaporates, the frame shifts to an upper position where the water is again sent through the nozzle to the evaporative pad, and the cycle repeats itself.

Abstract: The present invention relates to a front suction/discharge type outdoor unit for an air conditioner which can solve problems due to increased capacity and decreased suction air.

Abstract: The invention is a system for evaporatively cooling the intake air for an air conditioning housing unit. The system includes a plurality of conduits connected to a fluid source, and nozzles configured to expel vapor into a perimeter of the housing unit.

Abstract: An apparatus is described for applying a fine mist of water to an air conditioner condenser coil for increasing the heat transfer thereof. A water source under normal utility pressure is tapped for flow into a reduced diameter tube supplying the apparatus. Said tube water is filtered and electrolysis protected by a magnesium element affixed to the tube and to the air conditioner structure. A metering valve used exclusively for metering small flows of liquid Freon-type refrigerant, is modified and adapted for exclusive use in metering water to the misters. It is conjoined with a temperature sensor bulb filled with expandable refrigerator coolant as a control initiator and which communicates with said valve via a sealed capillary tube to a chamber and diaphragm means. As the sensor bulb is located at the heat exchanger coil, this expansion valve meters water flow control in accordance with the temperature of the heat exchanger, without the use of electricity or dependence on fan power.

Abstract: A system for providing liquid refrigerant subcooling, by means of evaporative cooling utilizing the condensate water of said air conditioner, refrigeration/heat pump system and/or some other water supply to wet the surface of the subcool heat exchanger and pass the dry exhaust air across the wetted surface of the subcool heat exchanger. A system for providing hot gas discharge refrigerant precooling into the primary condenser of an air conditioner, refrigation or heat pump system by evaporative cooling utilizing the condensate water of said system and/or other water supply to wet the surface of the precool heat exchanger and then passing the cold, dry exhaust air across the wetted surface of the precool heat exchanger. A combination subcooler/precooler system where the cold dry building exhaust air is used to evaporatively subcool the liquid refrigerant in the water wetted (or dry) subcooler and then used to conductively cool the hot gas refrigerant.

Abstract: The invention relates to an air-conditioner having a heat exchanger, such as an evaporator, for example, with a reservoir for a cold storage medium.

Abstract: The present invention relates to a mist cooler and in particular to a means for cooling the air partially or wholly surrounding a conventional air cooled condenser of an air cooler or a refrigeration unit. The present invention is particularly adaptable as an addition, which works in conjunction with an existing air cooler by lowering the temperature of the air before the air enters the air intake of the air cooler or refrigeration unit. The present invention can be combined as an addition to any air conditioning air cooled condenser for residential, commercial, industrial, or institutional application.

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: Object of the present invention is to improve a structure of the air conditioner, to provide an air conditioner which can dispose of condensed water from an evaporator within the air conditioner itself without discharging to outside of the air conditioner, and improve an air conditioner efficiency. To achieve the object of the present invention, the air conditioner of the present invention includes a condenser which generates a high temperature heat, an evaporator which absorbs an external heat, and forms condensed water on a surface thereof by a temperature difference with an external air, and condensed water self disposal means for transferring the condensed water on the surface of the condenser to a condenser side, and evaporating the condensed water from the surface of the condenser by the high temperature heat from the condenser, thereby disposing of the condensed water within the air conditioner itself.

Abstract: The present invention relates to a mist cooler and in particular to a means for cooling the air partially or wholly surrounding a conventional air cooled condenser of an air cooler or a refrigeration unit. The present invention is particularly adaptable as an addition, which works in conjunction with an existing air cooler by lowering the temperature of the air before the air enters the air intake of the air cooler or refrigeration unit. The present invention can be combined as an addition to any air conditioning air cooled condenser for residential, commercial, industrial, or institutional application.

Abstract: An evaporative heat exchanger of a medium condenser of a air/conditioning system with less cooling fins or even without cooling fins. The evaporative heat exchanger is composed of a plurality of streamline cross sectional tubes used instead of conventional round tubes for providing an evaporative efficiency, and being easy to clean and maintain.

Abstract: A heat exchanger with improved heat exchange capability mainly includes a primary heat exchanger, a water vaporization device and a secondary heat exchanger. The secondary heat exchanger may be coupled with the water vaporization device to generate liquid and vapor phase transformation to increase heat exchange capability of the heat exchanger and save energy and reduce thermal pollution.

Abstract: First, a system for providing liquid refrigerant subcooling, subsequent to that subcooling accomplished by the primary condenser of an air conditioner, refrigeration or heat pump system, by means of evaporative cooling utilizing the condensate water of said air conditioner, refrigeration or heat pump system and/or some other water supply to wet the surface of the subcool heat exchanger and then passing the cold, dry building exhaust air required for good indoor air quality (or outside air) across the wetted surface of the subcool heat exchanger or by using building exhaust air only to conductively subcool. Said exhaust air could be used after first undergoing a sensible heat exchange with the incoming make up air. Said subcooling providing for an increased refrigeration capacity and efficiency of the system.

Abstract: An evaporative type medium condenser without the using of conventional cooling fins comprises: characteristically a plurality of streamline cross sectional bare metal tubes disposed in parallel for medium coils to instead the conventional round sectional tubes thereof; a recycling water supply system having a plurality of water spray nozzles for spraying fine water particles onto the surface of coil tubes formed a water film continuously held thereon; a fan system to provide a wind flow blowing over the streamline tubes in a direction from a large head front portion of the streamline cross section to a gradual reduced rear portion thereof and to provide a low pressure area thereat so as to speedy the evaporation of the water film on the surface of the coils tubes for improving a high cooling efficiency to reach a high E.E.R. therefore.

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 invention is a system for evaporatively cooling the intake air for an air conditioning housing unit. The system includes a plurality of conduits connected to a fluid source, and nozzles configured to expel vapor into a perimeter of the housing unit.

Abstract: The air conditioning system for cupboards for receiving control and automation systems as well as for the network technique, in particular for switch cupboards with a cooling device, is characterized in that warm air (WL) is sucked from the inside (22) of the switch cupboard (20) by means of a fan (31) and is supplied to one or at least two evaporators (35, 135), preferably placed in the surface plane of the fan (31), whereby cold air (KL) is conducted into the inside (22) of the switch cupboard (20), whereby a condenser (45) is placed below the evaporators (35, 135) in such a way that the evaporators (35, 135) come to rest with a section or with their front areas (35a, 135a) above the condenser (45) so that condensate delivered by the evaporators (35, 135) drops onto the condenser (45) and evaporates or volatilizes, whereby ambient air (UL) is delivered to the condenser (45), whereby the cold air delivery sections to the inside (22) of the switch cupboard (20) are constant in their lengths or changeable in l

Abstract: A heat exchanger for a medium condenser having a plurality of vertical cooling fins having extra length extended both upwardly and downwardly from an ordinary portion of medium coil path for greatly increasing the cooling efficiency thereof, and a drip-drop type water feeding box for feeding water drops to a top of cooling fins densely but intermittently to let each of water drop remain in the space between opposite surfaces of adjacent cooling fins a short period of time and start to slide down the surface of a cooling fin as a next drop of water is delivered to provide enough time for evaporation so as to absorb a large quantity of latent heat and increase cooling efficiency.

Abstract: An integrated system to filter water and cool air by coupling misting nozzles with compressors and a heat exchanger.

Abstract: A cooling device is constructed by a water impermeable member defining a water passage, the water impermeable member being provided with a vapor permeable member which is permeable to water vapor and impermeable to water, and has the form of a mesh and made of a material having water repellency. The cooling device has a long-life operation while preventing wear-out of the vapor permeable member. Further, optimally setting the size of an opening of the mesh member enables to securely dissipate water vapor outside of the cooling device through the vapor permeable member while efficiently suppressing water leak.

Abstract: A chiller plant which produces chilled water for airconditioning, or an industrial process and which is comprised of chillers, cooling fluid pumps, and cooling towers with electrical motor drives uses a substantial amount of energy. A method that coordinates the operation of the cooling tower, cooling fluid pumps, and refrigeration machines so that the chiller plant operates at a higher overall efficiency thus reducing the power usage has been developed and is presented herein. The flow rate of the cooling fluid pumps are controlled to maintain a precise temperature difference across the refrigerant condenser. The cooling tower fans are controlled by comparing the cooling fluid temperature and the cooling fluid flow rate to selected design parameters. The heat rejection rate is measured for each chiller in the chiller plant and operating set points are established for each operating chiller to provide the optimum operation for best energy efficiency.

Abstract: An evaporative condensing air conditioning system employing a de-superheater and mist eliminator located between the air fan on an evaporative cooler and a spray tree that delivers water 20 as a coolant on the exterior surfaces of a condenser coil. The de-superheater receives superheated coolant gas from the compressor of the air conditioning system where air traveling on the outside of the de-superheater coil removes heat from the coolant gas located within the de-superheater coil to the point where the coolant is still a gas but is no longer superheated. The coolant gas then exits the de-superheater and flows into the evaporatively cooled condenser coil where the coolant is further cooled and condenses into a liquid before finishing the air conditioning circuit by consecutively moving through an optional coolant receiving chamber, a thermal expansion valve, an evaporator, and returning to the compressor.

Abstract: A split air conditioning system consisting of an indoor evaporator unit having a water drain extending from the evaporator coil and an outdoor condenser unit including a compressor and a condenser coil, characterized in that at least a portion of the water flowing through the said water drain of the said indoor unit is lead to the condenser coil of the outdoor unit for cooling of the condenser coil. The condenser coil may be a flat planar element or may be hollow bodied and D or O shaped and the cooling fan is located on the operative top of the coil.

Abstract: Object of the present invention is to improve a structure of the air conditioner, to provide an air conditioner which can dispose of condensed water from an evaporator within the air conditioner itself without discharging to outside of the air conditioner, and improve an air conditioner efficiency.

Abstract: The present invention relates to the methods for hydrophilization, capable of greatly improving the surface wettability of wet surface heat exchangers by transforming the solid surface to an improved surface having hydrophilic porous structure.

Abstract: A must system for use in conjunction with a normally air cooled air conditioner condenser. The mist system provides cooling water to the coils and fins of the condenser to improve efficiency. Misting is normally off but comes on in response to pressure in the high pressure supply line from the condenser rising above a pre-set head pressure level.

Abstract: A method and apparatus for prolonging the life of an air conditioner unit by directing water onto the condenser coils of the air conditioner. The apparatus is mounted onto a conventional air conditioner and includes a water valve that is connected on one end to a water source and on an opposing end to a means for spraying water directly on the condenser coils of the air conditioning unit. The water valve is operated by a controller that acts as a dual sensor for sensing whether a certain ambient temperature has been reached and whether the compressor is activated. The apparatus may be purchased as a backfit or retrofit kit and easily assembled by the average homeowner without the use of special tools.

Abstract: An auxiliary watering system and methods for lowering the temperature of an ambient air supply to an air-conditioning unit that is controlled solely by an acoustic signal from the air-conditioning unit.

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: A mist system for use in conjunction with a normally air cooled air conditioner condenser. The mist system provides cooling water to the coils and fins of the condenser to improve efficiency. Misting is normally off but comes on in response to pressure in the high pressure supply line from the condenser rising above a pre-set head pressure level.

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 method and an apparatus for providing make-up water for a chilled water system. A first water tower for cooling water is provided. Condensate water from a condensate water source is extracted. Make-up water for the first water tower is provided using the condensate water. The apparatus comprises a first water tower for generating cooling water; an air compressor to produce compressed air; a condensate water source to extract condensate water from the compressed air; and a water flow control system for providing water from the condensate water source to the first water tower.

Abstract: Object of the present invention is to improve a structure of the air conditioner, to provide an air conditioner which can dispose of condensed water from an evaporator within the air conditioner itself without discharging to outside of the air conditioner, and improve an air conditioner efficiency. To achieve the object of the present invention, the air conditioner of the present invention includes a condenser which generates a high temperature heat, an evaporator which absorbs an external heat, and forms condensed water on a surface thereof by a temperature difference with an external air, and condensed water self disposal means for transferring the condensed water on the surface of the condenser to a condenser side, and evaporating the condensed water from the surface of the condenser by the high temperature heat from the condenser, thereby disposing of the condensed water within the air conditioner itself.

Abstract: A closed circuit cooling tower for evaporative fluid cooler applications such as water-cooled residential and commercial air conditioning, geothermal cooling supplementation, and process cooling applications. Corrugated metal tubes are used for heat transfer to permit mechanical de-fouling, such as flexing the tubes. The cooling tower may operate at high dissolved solids, or gray water may be used in order to reduce water consumption. The cooling tower is lightweight and modular to permit retrofitting of existing rooftop air conditioning systems so that efficient evaporative cooling may be used to lower energy costs.

Abstract: An apparatus for use in a counter flow heat exchange assembly that provides increased heat exchange. The apparatus includes a plurality of adjacently spaced arrays, each array having a plurality of cooling conduits that are connected to one another through the utilization of connector portions. In addition, the apparatus includes a vertical partition that extends between some or all conduits of each array.

Abstract: A method and apparatus for cooling an air conditioning system's condensing coils utilizing air filter pad made of glass fibers with self contained, perforated water capillary tubes allowing moisture to permeate the filter pad. The filter dads are connectable in series and provided with integral mounting strips for fixed or magnetic, internal or external attachment to the condensing unit. Special adaptive solenoids are also provided to allow for minimum flow of water over long periods of time. Dual sensors are provided connected to both the high and low side of the compressor for sensing compressor temperature status and switching the solenoid on and off, thereby preventing freezing. A unique method for applying chilled water to the capillary tubes by coiling the capillary tube around the suction line of the compressor is utilized.

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 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 closed circuit cooling tower for evaporative fluid cooler applications such as water-cooled residential and commercial air conditioning, geothermal cooling supplementation, and process cooling applications. Corrugated metal tubes are used for heat transfer to permit mechanical de-fouling, such as flexing the tubes. The cooling tower may operate at high dissolved solids, or gray water may be used in order to reduce water consumption. The cooling tower is lightweight and modular to permit retrofitting of existing rooftop air conditioning systems so that efficient evaporative cooling may be used to lower energy costs.

Abstract: There is provided a heat pump system including two (4,6), at least similar units in fluid communication with each other, each unit having a housing (8,8?), a first air/brine heat exchanger (12,12?), a second brine/refrigerant heat exchanger (24,24?), a brine inlet (10,10?) for applying brine onto at least one of the heat exchangers, a brine reservoir (14,14?) and a pump (28) for circulating the brine from the reservoir to the inlet. The first and second heat exchangers are in closed loop fluid communication with each other and have a compressor (44) for circulating a refrigerant therethrough in selected directions.