Abstract: A cryogenic cooling tower in which a process liquid from which heat is to be removed is supplied to the tower interior that has a plurality of plates vertically stacked one above the other, alternating in opposite directions and tilted downwardly at an angle relative to the tower vertical axis. A cryogenic cooling medium is supplied to the tower interior. The process liquid forms a film on the upper surface of the plate and drops from its front end to the next lower plate. While on a plate the process liquid spread into a film provides a greater surface area to react with the cooling medium to effect the heat transfer. The tilt angle of the plates can be adjusted to control the residence time of the process liquid in the tower.

Abstract: To improve both heat transfer and evaporation in a heat exchanger (10, 25, 42) of an air cooler, there are provided a number of spaced narrow wet wicks (13) over which air flows transversely, and those wicks (13) are sandwiched between impervious spacer sheets (11, 12), the surface configuration of the spacer sheets (11, 12) being non-planar so as to increase the areas of the wicks (13) over which air flows, and also to increase air turbulence and thereby mixing, the increased mixing not only assisting in the evaporation of water from wicks (13) but also assisting in the heat transfer through the spacer sheets (11, 12) which define the air passages containing the wicks (13).

Abstract: A method and device refrigerate a fluid by adding a volatile liquid mist to a flow of a gas to saturate the gas with vapor of the volatile liquid, to cause a large amount of misty minute liquid drops of the volatile liquid to float in the gas and to form a cooling gas. The cooling gas is directed through a first flow passage of a heat exchanger having first and second flow passages. The fluid to be refrigerated is directed through the second flow passage of the heat exchanger, so that heat from the fluid is transferred to the cooling gas, while the cooling gas passes through the first flow passage of the heat exchanger to elevate the temperature of the cooling gas. A portion of the minute liquid drops floating in the cooling gas are allowed to vaporize due to the elevated temperature of the cooling gas. The temperature of the cooling gas is continuously lowered by the heat of vaporization of the vaporizing minute liquid drops.

Abstract: A high lever air conditioner in which a gas energy used as a principal refrigeratory (heating) cycle 8 form cycle consists of a J pipe of air energy heat pump, a J pipe of supercondensation and a heat pump of difference for energy conversion. Theory thermal energy conversion EER thereof can tend to .infin., is much greater than Carnot cycle. Actual air conditioner system which needs elements of consumed energy, such as a cycle pump, an energy control device, a fan, etc., has EER value of 20-35. Three difficult problems including high energy consumption, chlorofluorocarbons (CFC.sub.5) refrigerant which is contracted, and the lower air quality in conditioned room that is heavily restricted, the development of the present air conditioner may be simultaneously solved.

Abstract: A method of conditioning a process stream of air in an air conditioning system wherein a process stream of air is dehumidified and cooled to provide a conditioned stream of air for introducing to a conditioned space. The method comprises the steps of providing an adsorption wheel having a multiplicity of passages through which process air can flow for adsorbing moisture therefrom, the wheel capable of adsorption of moisture from the process air and of regeneration on a continuous basis as the wheel rotates. An indirect evaporative cooler is provided having a dry side and a wet side separated by a moisture-impervious wall wherein heat is extracted from said dry side through the wall to the wet side. Cooling in the dry side is achieved by evaporation of water into air passing through the wet side. The process air is passed through the adsorption wheel to remove moisture therefrom to provide a moisture-depleted stream of process air exiting the adsorption wheel.

Abstract: An evaporative cooling system externally mounted around an air cooled condenser to increase the rate of heat transfer. Spray cooling takes place in stages around succeeding portions of the condenser as determined by thermostats which respond to increasing condenser air discharge temperature.

Abstract: A modular loose egg cooling, storage, and transport system for use in the egg industry to safely transport eggs and to facilitate rapid cooling of eggs to be stored. The modular egg system includes first and second vertical members adapted to mate with each other in a criss-cross configuration and to mate in a sandwich structure with deck boards. The assembled modular egg system comprises four of these criss-cross support structures sandwiched between five deck boards to form a shift-resistant unit with the lowermost deck board fastened to any plastic foot assembly to serve as a pallet. The deck board includes a plurality of depressions designed to accept the footprint of any commercial egg tray and thereby lock stacks of these egg trays in place within the modular egg system. All components of the system define apertures therethrough to encourage airflow over and around the stacks of egg-containing trays placed on the deck boards.

Abstract: A water evaporation type cooling system equipped with a hermetically sealed housing and a solid electrolytic membrane placed to divide the hermetically sealed housing into first and second hermetically sealed spaces. Water is reservoired within the first hermetically sealed space, while a condenser is situated to communicate with the second hermetically sealed space. A direct-current voltage is applied to the solid electrolytic membrane, with the result that a water electrolytic reaction takes place on its first hermetically sealed space side surface, while a water production reaction occurs on its second hermetically sealed space side surface. Protons produced by the water electrolysis pass through the solid electrolytic membrane to contribute to a water production reaction. Steam within the first hermetically sealed space is transferred to the second hermetically sealed space whereas the oxygen within the second hermetically sealed space is shifted to the first hermetically sealed space.

Abstract: An apparatus for delivering a fine spray mist to cool a localized area by evaporative cooling. The apparatus consists of a pressurizable tank, a valve for activating the release of fluid from the pressurizable tank, and a spray nozzle or a plurality of spray nozzles coupled to the valve by a quick connect coupler.

Abstract: The invention relates to a process for the cooling and conditioning of air heated in a process, in particular of machine exhaust air which is cooled through heat exchange by means of a cooling medium, whereby water is preferably used as the cooling medium. It is provided that open waters, well and/or tap water of the water supply network are used for the heat exchange, whereby this water is used after utilization in the heat exchange at other locations for the cooling of the process and/or as hot water for further utilization in the process.

Abstract: A method and apparatus are described to evaporatively cool air leading to a gas turbine engine by injecting water fog into the inlet air in a controlled manner. A signal is generated representative of the capacity of the inlet air stream to absorb water vapor and used to regulate the amount of fog introduced into the inlet air stream.

Abstract: A method of gas generation resides in transformation of a cryogenic agent, capable of passing to the supercritical state, from the liquid state to the gaseous state thereof by way of thermoinversion in an isochoric process with enhancement of the potential energy of pressure of the gaseous medium thus obtained, and reducing the shaped gas stream, this being followed by gasdynamic ejection of the ambient medium. A plant for effecting the method comprises a source of a working medium (a cryogenic agent), at least one chamber (1,2), a gas reducer (29) and a gas ejector (24), arranged in succession downstream and communicating with each other.

Abstract: An apparatus for precoooling water supplied to an evaporative cooler of the type known as a "swamp cooler" includes inlet and outlet reservoirs secured by brackets to a bottom surface of the evaporative cooler water pan at substantially the same elevation. The inlet and outlet reservoirs are connected in fluid communication with a subterranean vessel enclosing a cooling coil. In use, water is supplied to the inlet reservoir and maintained at a predetermined level by a float valve assembly. A filtered drain line returns water from the evaporative cooler pan into the inlet reservoir from which it drains by gravity flow into the cooling coil within the subterranean vessel. The water circulates within the coil to precool and thereafter discharges and mixes within the vessel. A pump in the outlet reservoir pumps water from a return line communicating with the vessel back to the evaporative cooler.

Abstract: A system for improving the efficiency of the cooling system for a compressor for air or other compressible gas, involving the use of the condensate produced by the compression, which is presented for evaporation at the point of entry of the stream of coolant gas into heat exchangers, whereby the heat required for evaporation of the condensate is taken from such coolant gas to precool the same before it enters the heat exchanger.

Abstract: An air conditioner is provided that self-disposes of salts that accumulate in increasing concentration inside the air conditioner cooler. Such salts result from continuous evaporation of water that cools air passing through water evaporation mats located within the cooler. The air conditioner includes a separate basin for drawing salty water from the cooler reservoir. Drawn water is evaporated from the basin to concentrate the salt for disposal. The evaporation basin is designed so that the evaporation rate therein is substantially equal to a predetermined ideal quantity of salt water to be disposed of in order to maintain the highest efficiency in performance of the cooler. As such, the evaporative air conditioner system does not consume a larger quantity of water than that consumed by ordinary coolers that require regular cleaning and maintenance.

Abstract: A method for the efficient cooling of a cavity-bearing surface is disclosed. The method includes the provision of an extra-fine coolant mist to the surface to be cooled wherein the surface has at least two projections and at least one cavity therebetween. The mist is deposited so as to form an ultra-thin coolant film upon the surface and at least one coolant mist vortex within the cavity. The film is evaporated from its outside surface.

Abstract: A heat exchanger for exchanging heat between a first fluid and a second fluid comprises a moving partition member for heat transmission between the first fluid and the second fluid, a housing partitioned by the moving partition member into a first chamber for passing the first fluid and a second chamber for passing the second fluid, and a power source for rotating the moving partition member.

Abstract: The present invention produces a cold gas stream having a constant temperature and pressure. The gas stream is obtained from two initial streams, one being a liquefied gas and the other being a gas at ambient temperature. The liquefied gas stream is combined with the warm gas stream, causing the liquid to vaporize. The two streams are combined in proportions that yield a cold gas mixture having a desired temperature. The resulting cold gas mixture is directed into an insulated container having a volume significantly larger than the volume of the conduits through which the streams flow. The container therefore acts as a buffer to reduce pressure fluctuations in the stream. A temperature equalization coil is located in the interior of the container. The coil has one open end which communicates with the interior region of the container, the other end of the coil being connected to an outlet line.

Abstract: A device for and a method of producing hyperfine frozen particles reduces the quantity of impurity particles in the hyperfine frozen particles produced and stabilizes the generation of hyperfine frozen particles. A hopper includes a heat exchanger through which a coolant, such as nitrogen gas or liquid nitrogen, is circulated. A nitrogen gas inlet through which low temperature nitrogen gas as a coolant is supplied includes a filter to produce a laminar flow of the gas.

Abstract: Liquid is cooled in a columnar vessel having an inlet and an outlet for the liquid. The cooling is effected by introducing liquid cryogen into the vessel through a pipe. The liquid cryogen vaporizes and crates turbulence in the liquid in the vessel. Perforated plates dampen the turbulence and disengage the vaporized cryogen from the liquid being cooled. Pressurized gas is introduced from an inlet into the liquid beneath the liquid cryogen. This pressurized gas crates turbulence in the region where the cryogen enters the liquid and thus is able to prevent local freezing of the liquid in the mouth of the pipe. The liquid is typically water and the liquid cryogen typically liquid nitrogen.

Abstract: An apparatus and method for indirect cooling of air from its ambient temperature to substantially its dew point. Ambient air is redirected through spaced openings formed along the heat exchanger plates to form a secondary air stream.

Abstract: Refrigeration apparatus for cooling or freezing products such as protein materials includes a drum through which heat transfer fluid is circulated. A belt is wrapped around part of the drum surface and the product to be refrigerated is applied to the drum surface, being pressed thereagainst by the belt. Either liquid or triple point carbon dioxide is circulated through the drum to cool the product in contact therewith. Other heat transfer fluids such as D-Limonene or DOWTHERM may also be circulated through the drum. A tank and related apparatus for cooling the heat transfer fluid is also disclosed.

Abstract: An open top tank is provided in which slush ice may be rapidly formed by a method forcibly projecting the formed slush ice from the tank or by a method retaining the slush ice within the tank for removal therefrom by other means. In addition, the tank may be used to cool liquid therein such as proplylene glycol down to -20.degree. F.-30.degree. F. degrees such that food stuffs may be dipped into the chilled propylene glycol for quick freezing of the food. The tank is portable and needs only a supply of liquid CO.sub.2 under pressure and propylene glycol (or water if slush ice is to be formed).

Abstract: A vapor collecting apparatus for extracting a condensed, liquefied volatile component carried by a solvent gas. The apparatus includes a single cryogen-cooled vessel into which the gas stream is introduced, along with a flow of liquid cryogen, preferably liquid nitrogen. The output from the vessel contains droplets of condensed vapor which are separated from the gas solvent in a cyclone separator.

Abstract: A vented cold tank is provided and partially filled with a eutectic solution. CO.sub.2 snow forming structure is provided within the interior of the tank above the level of eutectic solution therein and liquid CO.sub.2 injection structure is provided in an lower portion of tank below the level of eutectic solution and arranged to create circulation of the eutectic solution within the tank including generally opposite upper and lower horizontal components of movement and generally opposite vertical components of movement of the solution within the tank. The CO.sub.2 injection structure also is operative to educt a portion of the circulating solution from a lower portion of the interior of the tank adjacent the bottom thereof, mix CO.sub.2 snow with the educted portion of solution, and downwardly direct the mixed CO.sub.

Abstract: A process for cooling gaseous chlorine in which gaseous chlorine at elevated temperature and at a pressure of greater than 0.5 bar gauge, for example, up to 12 bar gauge, is cooled by directly contacting the gaseous chlorine with an aqueous solution of a solute, for example, with an aqueous alkali metal chloride solution from which chlorine may be produced by electrolysis.

Abstract: There is provided by this invention a method and an apparatus for cooling a heat load that is operable in zero gravity conditions and while in any orientation due to the design of the apparatus. The apparatus' components are also selected so as to comprise a lightweight refrigeration system. The apparatus utilizes direct contact between two fluids, a liquid coolant and a refrigerant, with widely different vapor pressures so that one fluid, the coolant, always remains a liquid in the system. The two fluids may be totally or partially soluble in one another or they may be totally insoluble in one another with the degree of solubility affecting the system's efficiency, but not its reliable operation. The refrigerant, which boils and condenses during the refrigeration cycle, is mixed with the coolant and condensed prior to the portion of the system's cycle in which the heat is rejected to a heat sink and is subsequently separated from the coolant.

Abstract: A method and apparatus for heat and mass transfer is described that is applicable to: concentration, crystallization, purification, fractionation, stripping, absorption, and/or heat exchange for liquid media; drying for solid or gel media; and temperature and humidity modification for gas media. Generally, using a moving gas, such as air at a constant and atmospheric pressure, a continual change in a vapor-liquid equilibrium is created between proximate but continually changing gas and liquid temperatures within energy transferring chambers. Chamber wetting, implemented segmentedly, allows mass transfer into and from the moving gas. A forced temperature differential in each chamber causes heat transfer between chambers by means of thermally conductive partitons. This transfer can allow condensation causing further evaporation in the opposite chamber resulting in a recycling of energy.

Abstract: An automatic coolant sprayer for the car interior comprises a container connected to the trunk compartment's top plate behind car's rear seat, a jet can loaded with speedy coolant, a starting gear to force jet can's valve into action, an PC board integrated with control circuit, a microswitch and a remote controller. Installed on the car's trunk compartment top plate, the inventive sprayer, by opening car door action that touches microswitch or receiving signal from remote controller, can conduct open the control circuit and start the motor of starting gear to operate, whereby a driving arm would be brought along to press the valve of jet can, thus spraying out the coolant toward the car's front and rear seats upper sides. In this way, the temperature of the interior of the car while parked outdoors in a hot summer day will be reduced speedily, to facilitate driver's next car use.

Abstract: A method and apparatus for heat and mass transfer is described that is applicable to: concentration, crystallization, purification, fractionation, stripping, absorption, and/or heat exchange for liquid media; drying for solid or gel media; and temperature and humidity modification for gas media. Generally, using a moving gas, such as air at a constant and atmospheric pressure, a continual change in a vapor-liquid equilibrium is created between proximate but continually changing gas and liquid temperatures within energy transferring chambers. Chamber wetting, implemented segmentedly, allows mass transfer into and from the moving gas. A forced temperature differential in each chamber causes heat transfer between chambers by means of thermally conductive partitions. This transfer can allow condensation causing further evaporation in the opposite chamber resulting in a recycling of energy.

Abstract: A quick, car-cooling composition is provided. The composition consists essentially of:about 5-15% by volume of methanol;about 20% by volume of a propellent;about 0.5% by weight of sodium benzoate;about 0.2% by volume of fragrance;about 0.2% by volume of morpholine; andabout 64.1 to 74.1% of deionized water.When sprayed in rapid, intermittent succession, the composition lowers the temperature in a hot confined space.

Abstract: The main air stream (1) in a room is cooled by passing it along the dry duct (3) and simultaneously passing the auxiliary air stream (7) that has been taken from the atmosphere in a countercurrent flow along the moist duct (9), which is in heat-exchange interaction with the dry duct (3). To provide more intensified cooling the auxiliary stream (7) is precooled in another dry duct (8), which is in heat-exchange interaction with another moist duct (6), by passing a part (5) of the precooled air taken up from the main stream (1), while a part (4) of air is returned to the room. The auxiliary stream (7) is flowing with the aid of an air exhauster (10).

Abstract: An energy conservation system for cooling and conditioning air, particularly air at elevated temperatures which is discharged from the rotors of open-end spinning machines. The air is directed along a predetermined flow path in which a first stage cooling zone is established, which utilizes one or more cooling coils through which flow a heat exchange fluid that is cooled by an externally located cooling tower. The system includes a second stage cooling zone comprising an air washer in which water is sprayed into the air stream, such water being chilled in part by a mechanical refrigeration unit. The air washer preferably includes two spray pipes, one being located upstream of the other, with the downstream spray pipe receiving some liquid chilled by the refrigeration unit, and with the upstream spray pipe receiving its spray liquid from the discharge collected from the downstream spray pipe.

Abstract: A vented cold tank is provided and partially filled with a eutectic solution. CO.sub.2 snow forming structure is provided within the interior of the tank above the level of the eutectic solution therein and liquid CO.sub.2 injection means is provided in a lower portion of the tank below the level of eutectic solution and arranged to create circulation of the eutectic solution within the tank including generally opposite horizontal and generally opposite vertical component of movement of the solution within the tank. Further, structure is provided for communicating the CO.sub.2 snow forming means and the liquid CO.sub.2 injection means with the same source of liquid CO.sub.2 under pressure.

Abstract: Method of instantly lowering the temperature of the passenger compartment a of vehicle using atomized bursts of alcohol-water solution.

Abstract: An improved process for removing free liquid from a hydrocarbon-rich gas stream is disclosed. Liquid is injected into the gas stream upstream of a chiller and downstream of an acid-gas removal system and any equipment that may affect the water content of the gas stream: compressors, columns, additional knockout drums, heat exchangers or the like. This enhances heat and mass transfer in a manner that both minimizes the formation of small droplets and encourages the coalescence of small droplets in the chiller. As a result, small droplets which would normally pass through a knockout drum and a standard mist eliminator are increased in size, prior to their arrival at a vapor-liquid separator to larger drops which are easily removed by the vapor-liquid separator, and the mist eliminator.

Abstract: A method and apparatus for removing oil particles and condensate from a stream of compressed air used in the production of snow by snow-making equipment wherein the condensate is first crystallized thus allowing the oil particles to adhere thereto and thereafter the crystallized condensate and oil particles are heated in a holding zone to form a liquid which is separated from the stream of compressed air and drained therefrom.

Abstract: An air conditioning system with incorporated evaporative cooling apparatus dapted to sequentially pass compressed air from a compressor through a heat exchanger and expansion cooling turbine and into an enclosure. A condensate extractor is interposed downstream of the expansion cooling turbine and located above the heat exchanger. A nozzle is mounted to the heat exchanger and connected via a water conduit to the condensate extractor so that gravity delivers extracted condensate to the nozzle. The nozzle communicates via an air conduit with the compressor so that compressed air disperses the extracted condensate through the nozzle to impinge upon the heat exchanger thereby effectuating evaporative cooling.

Abstract: A method and apparatus for the provision of cooling through the utilization of aerosol sprays is disclosed. The hot water output of a load device is stored until low ambient temperatures exist, whereupon the hot water is atomized and exposed to the ambient air to be cooled thereby. A spray cooling system can also be combined with an artificial ice making system to provide even lower load device input temperatures. Specialized insulating devices can be used in connection with the artificially made ice to decrease the heat transfer between the ice and the ambient air during warm weather.

Abstract: A method and apparatus for removing oil particles and condensate from a stream of compressed air used in the production of snow by snow-making equipment wherein the condensate is first crystallized thus allowing the oil particles to adhere thereto and thereafter the crystallized condensate and oil particles are heated in a holding zone to form a liquid which is separated from the stream of compressed air and drained therefrom.

Abstract: In a method for cooling a process gas stream with a liquid cryogen, said stream being recycled through a pipe in a closed system comprising a reactor containing at least one pipe wherein, at the initiation of the instant method:(i) the flowrate of the stream is in the range of about 10,000 scfm to about 350,000 scfm;(ii) the temperature of the stream is in the range of about 75 degrees F. to about 450 degrees F.; and(iii) the pressure of the system is in the range of about 150 psig to about 1000 psig;and wherein, at any time during the effectuation of the instant method:(iv) the temperature differential between any two points in the pipe separated by at least about eight times the nominal pipe diameter is no greater than about 200 degrees F.; and(v) the minimum temperature of the pipe is at least about minus 20 degrees F.

Abstract: Warm food products are chilled to a sanitary storage temperature approaching 0.degree. C. without dehydration by introducing them into a cold humid 100% humidity chamber. The humidity is regenerated by spraying refrigerated water and the products are passed through a chilling chamber on a conveyor belt with a spiral path configuration.Various cabinet features reduce input energy and provide sanitary conditions, such as supplying sanitary water, and filtering droplets of water from the cold moist air to avoid contamination or product disfiguring drip. Provisions are made to prevent a moving conveyor belt from carrying warm air into the chiller or from carrying cold air out of it as it passes continuously through the chiller cabinet. All lubricated mechanical equipment is mounted external to the food processing chilling chamber and access doors are provided for sanitation. The water spray chamber and water flow paths are simply sanitized by replacing the water with a detergent solution.

Abstract: A process for the preparation of carbonated beverages by the consumer is disclosed. Water is contacted with carbonated ice and, optionally, flavored syrup in a closed pressure vessel whereby superatmospheric pressure is created and a carbonated liquid is produced. Soft drinks prepared by this method have a degree of carbonation substantially the same as the bottled or canned product available commercially.

Abstract: A cold temperature chilling storage and transportation container specifically is used for fish. The space between double walls of regular or cross-linked polyethylene is filled with polyurethane foam. The outer bottom wall has nine legs formed integrally therewith. The inner bottom wall slopes to a recessed one inch opening in which a plug may be inserted. The upper half of the sidewalls extends outward about an inch and a half on each side so that empty containers may be telescoped. A cover overhangs the outer wall and has lower recesses to receive the sidewall. Nine upper recesses in the cover receive legs of the bottom wall for stacking the containers. The legs enable a forklift to be inserted from either side. A hollow double walled air manifold fits within the bottom and has a nipple to which an air hose may be connected. In use, ice is placed in the container; later, salt water and fish are added.

Abstract: An improved snowmaking apparatus comprising a water source and an atomizing fan wherein during a snowmaking operation water is placed onto the rotating blades of an atomizing fan, the water exiting from the trailing edges of the blades as droplets, the improvement comprising providing a ducted fan behind the atomizing fan, the ducted fan during operation blowing ambient air towards and over the atomizing fan.

Abstract: Cracking gases are cooled by spraying them through a multiplicity of orifices into a cooling oil bath below the surface thereof.

Abstract: Tropical and subtropical regions having high ambient temperatures and relative humidity can be locally subjected to cooling and dehumidification according to the invention by a tower in which, upon a post or other vertically extending support, a pair of vertically aligned spaced apart air guides are provided. The lower air guide includes the cooler which can simultaneously condense moisture from the air while the upper air guide can include a heat dissipator of a refrigeration cycle, the air guides being associated with respective blowers and inducing ambient air into the air guide at a location between them and displacing the air through the air guides into heat exchanging relationship. The tower can also be used to collect potable (drinking) water by condensation from the atmosphere.

Abstract: A depressed wet bulb water cooler utilizing an indirect evaporating film heat exchanger having walls defining wet and dry sides. In a particular embodiment, the wet and dry sides are formed respectively as the opposite inner and outer surfaces of elongated hollow tubular conduits. Water from a load is applied across the inner wet side surfaces while intake air is drawn across the outer, dry side surfaces so as to cool the intake air to a first temperature. The cooled air is then flowed as working air at substantially the first temperature over the wet side of the conduits, and discharged.

Abstract: A cold storage apparatus in which a gas in a cold storage chamber is fed to a cold water spraying cyclone to make low temperature, moisture rich gas and this gas is fed to a water droplet removing cyclone to remove water droplets and then the resultant low temperature moisture rich gas is allowed to circulate through the cold storage chamber.This cold storage apparatus enables constant low temperature moisture rich cold storage at an optional temperature, and in which apparatus a stable storage of vegetables, fruits, meats and so on can be attained without producing frost and causing drying thereof.OBJECT OF THE INVENTIONAn object of the present invention is to provide a cold storage apparatus for allowing cold storage at a low temperature in a moisture rich condition absolutely without causing freezing.Another object of the present invention is to provide a cold storage apparatus wherein perishables such as vegetables, fruits, meats and the like can be preserved for a long period at a temperature from 0.5.

Abstract: An indirect evaporating film heat exchanger having walls defining separated wet and dry sides provide energy-efficient cooling to a gas compression system. In a particular embodiment the heat exchanger supplies a cool dry air stream and a cool moist air stream, respectively, to the power turbine's compressor inlet and intercooler of the gas compression system.