Abstract: To absorb a volatile substance from a gas phase in a liquid absorbent, the gas phase is brought into contact with a film of an absorbent which comprises an ionic liquid and a wetting-promoting additive. The process can be used in absorption refrigerating machines.

Abstract: The present invention relates to a hybrid vapor compression—absorption cooling or heating system and apparatus containing a refrigerant pair comprising at least one refrigerant and at least one ionic liquid. The present invention also provides for the performance of a hybrid vapor compression—absorption cycle that utilizes refrigerants and absorbents such as fluorocarbon gases in fluorinated ionic liquids. The present invention also provides a method of cooling by the execution of a hybrid vapor compression—absorption cycle using a refrigerant pair comprising at least one refrigerant and at least one ionic liquid. The present invention also provides a method of heating by the execution of a hybrid vapor compression—absorption cycle using a refrigerant pair comprising at least one refrigerant and at least one ionic liquid.

Abstract: A thermal energy transfer system utilizes a composition containing one or more polyols, such as 1,3-propanediol, and one or more ionic liquids as a thermal energy transfer composition. There is also provided a method of transferring thermal energy and a process for temperature adjustment, either cooling or heating, using such a composition.

Abstract: A sorption system is disclosed that includes a sorbent material and a fluid, in which the sorbent material and fluid in combination have a pressure index of at least 1.2.

Abstract: The invention relates to an adsorbent having a porous carrier structure, the pore walls of which are coated with a material which displays a temperature-induced reversible switching-over of the surface properties from hydrophilic to hydrophobic behaviour, the hydrophobicity increasing with rising temperature.

Abstract: An air conditioning system that includes desiccant compartments for holding a desiccant; a heat exchanger, a blower and a vessel. The heat exchanger can be filled with a heat transfer medium, while the blower blows ambient air by the heat exchanger such that the blown air is cooled and the heat exchanger is warmed such that thermal energy increases and is transferred from the air to the heat transfer medium causing the heat transfer medium to turn into vapor. The vapor is then diffused to one of the desiccant compartments such that the vapor is adsorbed onto the desiccant creating a mixture. Then an energy source is applied to the mixture such that the vapor and desiccant are separated. The separated vapor is transported to the vessel where it is condensed and then sent back to the heat exchanger, such that the system is able to be continuously operating.

Abstract: A direct expansion ammonia refrigeration system and a method of direct expansion ammonia refrigeration is described and which includes a source of liquid ammonia refrigerant which is delivered in fluid flowing relation to a plurality of evaporator tubes which incorporate wicking structures, and which through capillary action facilitated by the wicking structures are effective for drawing liquid ammonia refrigerant along the inside facing surface of the evaporator tubes so as to substantially reduce any stratified and/or wavy flow patterns of the liquid ammonia refrigerant within the evaporator tubes. The invention further includes a novel accumulator vessel and heat exchanger vessel which are coupled in fluid flowing relation relative to the direct expansion ammonia refrigeration system and which facilitate the removal of water from the ammonia refrigerant in order to enhance the operation of the direct expansion ammonia refrigeration system.

Abstract: A portable apparatus and method for providing a cooled liquid for vascular administration are disclosed. The portable apparatus includes a source of liquid for vascular administration, a cooling reservoir for receiving liquid from the source, and a sorption-based heat exchanger for cooling liquid in the cooling reservoir by a sorption-based process. The heat exchanger may include an evaporative area for receiving and vaporizing a refrigerant, a sorptive material for sorping vaporized refrigerant, and a heat exchange member for conducting thermal energy from liquid in the cooling reservoir into the evaporative area. Additional componentry may be provided for fluidly interconnecting and controlling the flow of liquid from the source to the cooling reservoir and from the cooling reservoir to a vascular interface device. Such componentry may be conveniently packaged in a sterilized manner together with at least the cooling reservoir.

Abstract: An absorptive refrigeration method that employs a refrigerant comprising one or more hydrofluoroolefin or hydrochlorofluoroolefin refrigerants, and an oil selected from the group consisting of a polyalkyene glycol oil, a poly alpha olefin oil, a mineral oil and a polyolester oil.

Abstract: The invention relates to a thermochemical device and to a method for producing refrigeration at very low temperature. The device produces refrigeration at a temperature Tf<?20° C., from an available heat source at a temperature Th of 60-80° C. and a heat sink at the ambient temperature To of 10° C.-25° C. It comprises two coupled dipoles, operating in phase. One of the dipoles may be regenerated from a heat source at the temperature Th and a heat sink at To, and produce refrigeration at the temperature Tf with a heat sink at a temperature below the ambient temperature To. The other dipole may be regenerated from a heat source at the temperature Th and a heat sink at the temperature To.

Abstract: An adsorption heat pump is provided in which water vapor can be efficiently adsorbed and desorbed using a heat source having a lower temperature than ones heretofore in use because the pump employs an adsorbent which has a large difference in water adsorption amount in adsorption/desorption and can be regenerated (release the adsorbate) at a low temperature. The invention provides an adsorption heat pump which comprises an adsorbate, an adsorption/desorption part having an adsorbent for adsorbate adsorption/desorption, a vaporization part for adsorbate vaporization which has been connected to the adsorption/desorption part, and a condensation part for adsorbate condensation which has been connected to the adsorption/desorption part, wherein the adsorbent, when examined at 25° C., gives a water vapor adsorption isotherm which, in the relative vapor pressure range of from 0.05 to 0.30, has a relative vapor pressure region in which a change in relative vapor pressure of 0.

Abstract: An adsorption heat pump is provided in which water vapor can be efficiently adsorbed and desorbed using a heat source having a lower temperature than ones heretofore in use because the pump employs an adsorbent which has a large difference in water adsorption amount in adsorption/desorption and can be regenerated (release the adsorbate) at a low temperature. The invention provides an adsorption heat pump which comprises an adsorbate, an adsorption/desorption part having an adsorbent for adsorbate adsorption/desorption, a vaporization part for adsorbate vaporization which has been connected to the adsorption/desorption part, and a condensation part for adsorbate condensation which has been connected to the adsorption/desorption part, wherein the adsorbent, when examined at 25° C., gives a water vapor adsorption isotherm which, in the relative vapor pressure range of from 0.05 to 0.30, has a relative vapor pressure region in which a change in relative vapor pressure of 0.

Abstract: The system uses a batch method process absorption cooling through a number of separate sealed two compartment containers which are moved physically between a heating area, a cooling area, a storage area and a refrigeration area. Pressure differentials alone between the two sections of a vessel power refrigerant movement and evaporation of refrigerant. A valve separates a refrigerant collector and evaporator section from an absorber/desorber section allowing the absorbent and refrigerant to be kept separate until needed. This system can be used with either ammonia water mixtures or with lithium bromide water mixtures.

Abstract: The present invention provides an adsorbent for adsorption heat pump and humidity-control air conditioner, which is capable of adsorbing an adsorbate therein and desorbing the adsorbate therefrom in a narrow relative vapor pressure range, and can be regenerated (desorption) at a low temperature. Also, the present invention provides an adsorption heat pump and humidity-control air conditioner using the adsorbent which can be effectively operated even by a low-temperature heat source, as well as methods of operating the adsorption heat pump and humidity-control air conditioner by effectively utilizing low-temperature exhaust heat. The absorbent of the present invention comprises zeolite containing (i) aluminum, (ii) phosphorus and (iii) iron and/or gallium in a skeletal structure thereof, which is substantially free from change in structure upon subjecting the adsorbent to adsorption and desorption of water vapor.

Abstract: Anti-corrosion solutions and processes useful for refrigeration processes are proposed. Heteropoly complex anions of transitional metal elements can be added to an absorption solution which includes aqueous ammonia, alkali metal hydroxide and/or alkaline earth metal hydroxide, optionally in combination with transition metal compounds or compounds of the metallic elements of Groups IIIa to VIa of the Periodic Table of Elements to minimize corrosion of systems within which the solution is used.

Abstract: A cooling system comprising an evaporation cooling device for evaporating an aqueous solution, a water content providing device for allowing vapor evaporated from impurities-containing water to be absorbed into the aqueous solution, and a circulating device for circulating the aqueous solution between the water content providing device and the evaporation cooling device; and a cooling method characterized by comprising the steps of taking in impurities-containing water, cooling a high-temperature body by evaporating water content in an aqueous solution having a boiling point higher than that of the impurities-containing water, allowing vapor evaporated from the impurities containing water to be absorbed into the aqueous solution concentrated by the cooling step, feeding the aqueous solution diluted in the absorbing step to the cooling step, and discharging the impurities-containing water concentrated in the absorbing step.

Abstract: An adsorbent for regenerator systems, to a heat utilization system and a regenerator system that comprise the adsorbent, and to a ferroaluminophosphate and a method for production thereof. More precisely, the invention relates to an adsorbent favorable for regenerator systems, which efficiently utilizes the heat source obtainable from cars and the like to thereby realize efficient regenerator systems, to a regenerator system that comprises the adsorbent, to a ferroaluminophosphate to be the adsorbent favorable for regenerator systems, and to a method for production thereof.

Abstract: Novel sorption cooling devices capable of providing cooling over an extended period of time are disclosed. The sorption cooling devices are particularly useful for temperature-controlled shipping containers that are required to maintain a temperature below ambient for a time sufficient to complete delivery of the container and its contents. The shipping containers can be utilized to cost-effectively transport temperature-sensitive products.

Abstract: A method of using mixtures consisting essentially of 1,1,1,3,3-pentafluorobutane (R365mfc) and at least one further partially fluorinated hydrocarbon selected from the group consisting of 1,1,1,2-tetrafluoroethane (R134a), pentafluoroethane (R125), 1,1,1,3,3-pentafluoropropane (R245fa) and 1,1,1,2,3,3,3-heptafluoropropane (R227ea) as the working fluid in high-temperature heat pumps. The refrigerant mixtures used according to the invention exhibit a high temperature glide.

Abstract: A container comprises a sealed cavity defined by first and second walls of the container and a coolant disposed within the cavity wherein the coolant is capable of assuming first and second phases. A portion of the first wall is joined to the second wall wherein the portion includes an off-center opening. The portion is rupturable to limit pressure in the sealed cavity. The container further comprises a container rim and a lid having both an outer channel and a tab. The outer channel receives the container rim. The outer channel defines a first width. The tab has a second width substantially equal to the first width. When the coolant in the cavity is in the first phase there is a first interference fit of the channel with the container rim. When the coolant is in the second phase, there is a second interference fit, different than the first interference fit, between the container rim and the outer channel of the lid. A method of manufacture of such a container and lid is also disclosed.

Abstract: Anti-corrosion solutions and processes useful for refrigeration processes are disclosed. Heteropoly complex anions of transitional metal elements can be added to an absorption solution which includes aqueous ammonia, alkali metal hydroxide and/or alkaline earth metal hydroxide, optionally in combination with transition metal compounds or compounds of the metallic elements of Groups IIIa to VIa of the Periodic Table of Elements to minimize corrosion of systems within which the solution is used.

Abstract: An adsorbent for regenerator systems, to a heat utilization system and a regenerator system that comprise the adsorbent, and to a ferroaluminophosphate and a method for production thereof. More precisely, the invention relates to an adsorbent favorable for regenerator systems, which efficiently utilizes the heat source obtainable from cars and the like to thereby realize efficient regenerator systems, to a regenerator system that comprises the adsorbent, to a ferroaluminophosphate to be the adsorbent favorable for regenerator systems, and to a method for production thereof.

Abstract: An adsorption heat pump is provided in which water vapor can be efficiently adsorbed and desorbed using a heat source having a lower temperature than ones heretofore in use because the pump employs an adsorbent which has a large difference in water adsorption amount in adsorption/desorption and can be regenerated (release the adsorbate) at a low temperature.

Abstract: The rate of water vapor sorption of an absorption cycle cooling and/or heating system using an aqueous alkali metal halide solution as the working fluid is increased by adding to the fluid an effective additive amount of at least 2 parts per million of an aliphatic, cycloaliphatic, or aromatic ketone or aldehyde capable of increasing the rate of water vapor absorption.

Abstract: In an adsorption-type refrigerating apparatus, an adsorber includes therein an adsorbent having a temperature-dependent characteristic in which an amount adsorbed in an adsorption step is larger than an amount adsorbed in a desorption step, even when a vapor pressure rate in the adsorption step is equal to or lower than a vapor pressure rate in the desorption step. Therefore, even when the cooling temperature of outside air for cooling the adsorbent increases, a sufficient cooling capacity can be obtained. In addition, a difference between the amount adsorbed in the adsorption step and the amount adsorbed in the desorption step can be made larger.

Abstract: Heat is absorbed from a first heat emitter and a second heat emitter is cooled by an adsorption type refrigerator operating by that absorbed heat. When the amount of emission of heat of the first heat emitter exceeds a predetermined amount of heat, the heat absorbed in the heat medium by a first heat collector is discharged to the outside air by an outdoor unit without being supplied to the adsorbent of the refrigerator. On the other hand, when the amount of emission of heat of the first heat emitter falls below a predetermined amount, the heat medium which had been supplied to a first heat exchanger for heating the adsorbent is switched to return to the first heat collector without flowing to the outdoor unit.

Abstract: A container comprises a sealed cavity defined by first and second walls of the container and a coolant disposed within the cavity wherein the coolant is capable of assuming first and second phases. A portion of the first wall is joined to the second wall wherein the portion includes an off-center opening. The portion is rupturable to limit pressure in the sealed cavity. The container further comprises a container rim and a lid having both an outer channel and a tab. The outer channel receives the container rim. The outer channel defines a first width. The tab has a second width substantially equal to the first width. When the coolant in the cavity is in the first phase there is a first interference fit of the channel with the container rim. When the coolant is in the second phase, there is a second interference fit, different than the first interference fit, between the container rim and the outer channel of the lid. A method of manufacture of such a container and lid is also disclosed.

Abstract: A system for providing refrigeration to a chemical processing operation wherein a refrigerant fluid is compressed and cooled, and a portion turboexpanded prior to being passed to a chemical processing operation for direct contact or indirect heat exchange.

Abstract: In an air conditioner using a flammable refrigerant of the present invention, an inner diameter of a liquid-side connecting pipe is reduced to less than 42.5% of that of a gas-side connecting pipe. By reducing the inner diameter of the pipe in which a liquid refrigerant of the air conditioner is reduced, it is possible to reduce the amount of refrigerant to be charged into the system without decreasing the capacity and the efficiency.

Abstract: The present invention relates to a dental method and means to allow pain-free injections in mucosa by the application of a topical anesthetic followed by an injection limited to penetrate the mucosa only to the extent of penetration of the topical anesthetic. The method is accomplished by applying a topical anesthetic to the desired mucosal area, and following the topical application with an injection, which penetrates the tissues only to the extent of penetration of the topical anesthetic. Various devices of fixed length are described which limit the penetration of the injection such as a drastically truncated syringe needle, a sheath fitted to and covering the needle, a needle shield, and a speculum.

Abstract: A steam type absorption refrigerator which circulates absorption fluid from an absorber (1), through a low-temperature heat exchanger (3), a low-temperature regenerator (4), a high-temperature heat exchanger (6), a steam heating type high-temperature regenerator (7), the high-temperature heat exchanger (6) and the low-temperature heat exchanger (3) in order, back to the absorber (1) comprising, a fluid concentrating boiler (10) which is disposed between the high-temperature regenerator (7) and the high-temperature heat exchanger (6) concentrating the absorption fluid under heat, and a pump (13) which extracts a part or all of the concentrated absorption fluid from the high-temperature regenerator (7) and feeds it to the fluid concentrating boiler (10), wherein the fluid concentrating boiler is connected to the high-temperature heat exchanger (6) so that the absorption fluid concentrated under heat is returned to the heating side of the high-temperature heat exchanger (6) and is also connected to the high-temp

Abstract: An aqueous absorption fluid composition, process and apparatus wherein the absorption fluid contains at least one monofunctional ether heat and mass transfer additive which provides improved water vapor absorption and thermal transfer in thermal exchange loops used in absorption refrigeration, chilling, heat pump, energy storage and other thermal transfer applications.

Abstract: An absorption refrigerator includes an evaporator having an evaporating heat exchanger pipe operable to evaporate refrigerant on an outer surface thereof so as to cool liquid to be cooled running in the pipe, an absorber containing absorbent liquid for absorbing the refrigerant evaporated at the evaporator, a regenerator for heating and concentrating the absorbent liquid supplied from the absorber by using heat source fluid and then supplying the concentrated absorbent liquid to the absorber, a condenser for condensing steam or vapor of refrigerant supplied from the regenerator and supplying the condensed refrigerant to the evaporator and an evaporator for evaporating the condensed water condensed at the condenser. The absorption refrigerator further includes absorbent liquid supplying means for supplying the absorbent liquid to the refrigerant present at the evaporator and refrigerant discharging means for discharging the refrigerant present at the evaporator to the regenerator.

Abstract: Composition consisting essentially of 55 to 94% R-125, 2.5 to 35% of R-134a and 3.5 to 25% by weight of DME, and its use as a refrigerant in a heat transfer system designed for R-22 and comprising, as lubricant, a mineral oil or an alkylbenzene oil.

Abstract: In an adsorption-type refrigerating apparatus, an adsorber includes therein an adsorbent having a temperature-dependent characteristic in which an amount adsorbed in an adsorption step is larger than an amount adsorbed in a desorption step, even when a vapor pressure rate in the adsorption step is equal to or lower than a vapor pressure rate in the desorption step. Therefore, even when the cooling temperature of outside air for cooling the adsorbent increases, a sufficient cooling capacity can be obtained. In addition, a difference between the amount adsorbed in the adsorption step and the amount adsorbed in the desorption step can be made larger.

Abstract: A method of carrying out recuperation between alternately absorbing and desorbing reactors in which in a first reaction cycle in a desorbing reactor a gaseous reactant is desorbed from a solid sorbent and concurrently in an absorbing-reactor the gaseous reactant is absorbed on a solid sorbent, and in a second reaction cycle, absorption and desorption are reversed in said reactors, respectively, comprising communicating the reaction chambers of the desorbing reactor with the reaction chamber of the absorbing reactor and directing a portion of gaseous reactant desorbed from the sorbent composition in the desorbing reactor near the completion of a desorbing cycle to the absorbing reactor for less than about 10 minutes prior to reversing the cycles.

Abstract: An on line corrosion replenishment system for use in an absorption cooling unit which includes an evaporator means, an absorber means, a generator means and a condenser means which are interconnected to provide an absorption cycle in which a lithium bromide solution is circulated through said unit through a series of interconnected flow lines and pumps. A source of time release corrosion inhibitor is connected to one of said flow lines to selectively release corrosion inhibitor to the lithium bromide solution.

Abstract: Improved methods for the controlled generation of ammonia from an ammoniated metal salt at substantially ambient temperature by applying microwave energy to the salt. The ammoniated salts have the formula MAn·(NH3), wherein M is at least one metal selected from the group consisting of alkali metals, alkaline earth metals, scandium, ytterbium, the lanthanides, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, technetium, rhenium, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium, platinum, copper, silver, gold, zinc, cadmium, mercury, tin, and aluminum; A is at least one ion selected from the group consisting Cl−, Br−, F−, I−, ClO3−, ClO4−, BF4−, AlCl4−, PF6−, SbCl6−, and SbF6−; and SbF6− n is from 1 to 6; and X is from 1 to 8.

Abstract: A carbon dioxide/cofluid mixture is provided for use in a refrigeration cycle in which the carbon dioxide is alternately absorbed and desorbed from the cofluid. The mixture includes from 50% to 95% cofluid and from 5% to 50% carbon dioxide. The cofluid is selected so that the mixture falls within region A of the plot of pvap versus &Dgr;hsoln shown in FIG. 3. The &Dgr;hsoln of the mixture is the differential heat of solution of the carbon dioxide in the cofluid at 5 wt % and 0° C. The pvap of the mixture is the vapor pressure of the carbon dioxide over the solution at 20 wt % and 40° C.

Abstract: A family of organometallic liquid absorbents that can have their thermophysical properties tailored for specific applications. Processes to manufacture these liquid absorbents and methods to optimize their thermodynamic properties are included. These organometallic liquid absorbents are used in compressor driven and heat driven heat pumps (50) and cryocoolers (99). With optimum thermodynamic properties, these heat pumps systems are highly efficient. These liquid absorbents are not damaging to the environment, are non-toxic and non-corrosive and are applicable to environmentally clean and highly efficient heat pumps, refrigerators, air conditioners, process heating and cooling systems, electronics cooling systems, cryocoolers and gas separation processes.

Abstract: A carbon dioxide absorption heat pump cycle is disclosed using a high pressure stage and a super-critical cooling stage to provide a non-toxic system. Using carbon dioxide gas as the working fluid in the system, the present invention desorbs the CO2 from an absorbent and cools the gas in the super-critical state to deliver heat thereby. The cooled CO2 gas is then expanded thereby providing cooling and is returned to an absorber for further cycling. Strategic use of heat exchangers can increase the efficiency and performance of the system.

Abstract: An absorbent refrigerant composition containing an aqueous solution of zinc and lithium bromides with an added amount of hydroxide ions. The addition of the hydroxide ions lowers the corrosion rate of the composition to an acceptable level without raising the freeze point of the composition. The composition is particularly suitable for use as an absorbent refrigerant composition in the high temperature loop of a dual loop triple effect absorption refrigeration apparatus.

Abstract: The rate of water vapor sorption of an absorption cycle cooling and/or heating system using an aqueous alkali metal halide solution as the working fluid is increased by adding to the fluid an effective additive amount of at least 2 parts per million of an aliphatic, cycloaliphatic, or aromatic ketone or aldehyde capable of increasing the rate of water vapor absorption.

Abstract: Improved methods for the controlled generation of ammonia from an ammoniated metal salt at substantially ambient temperature by applying microwave energy to the salt. The ammoniated salts have the formula MAn·(NH3), wherein M is at least one metal selected from the group consisting of alkali metals, alkaline earth metals, scandium, ytterbium, the lanthanides, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, technetium, rhenium, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium, platinum, copper, silver, gold, zinc, cadmium, mercury, tin, and aluminum; A is at least one ion selected from the group consisting Cl−, Br−, F−, I−, ClO3−, ClO4−, BF4−, AlCl4−, PF6−, SbCl6−, and SbF6−; and SbF6− n is from 1 to 6; and X is from 1 to 8.

Abstract: An auxiliary thermal storage heating and air conditioning system having an output for selectively delivering warm and cool air to the passenger area of a motor vehicle incorporates a reactor containing a metal salt or a complex compound formed by absorbing a polar gas refrigerant on a metal salt comprising a halide, nitrate, nitrite, oxalate, perchlorate, sulfate or sulfite of an alkali metal, alkaline earth metal, transition metal, zinc, cadmium, tin or aluminum, or sodium borofluoride or a double metal halide. In a preferred embodiment, the reactor contains a sorbent/substrate composition comprising a substrate material inert to the polar gas and incorporating the salt or the complex compound. One embodiment utilizes apparatus having a heat exchanger which selectively functions as an evaporator for a cooling mode and a condenser for a heating mode, and inside and outside coils for transferring system generated thermal energy.

Abstract: Improved methods for the controlled generation of ammonia from an ammoniated metal salt at substantially ambient temperature by applying microwave energy to the salt. The ammoniated salts have the formula MAn.X(NH3), wherein M is at least one metal selected from the group consisting of alkali metals, alkaline earth metals, scandium, ytterbium, the lanthanides, titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, technetium, rhenium, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium, platinum, copper, silver, gold, zinc, cadmium, mercury, tin, and aluminum; A is at least one ion selected from the group consisting Cl−, Br−, F−, I−, ClO3−, ClO4−, BF4−, AlCl4−, PF6−, SbCl6−, and SbF6−; and SbF6− n is from 1 to 6; and X is from 1 to 8.

Abstract: The invention relates to a heat transfer liquid for ventilation and air-conditioning installations to be used at low temperatures, in which installations heat is recovered from the exhaust air and conveyed to the supply air by means of a heat transfer liquid. For lowering the costs and eliminating environmental risks, the heat transfer liquid contains potassium formiate and water.

Abstract: A heat transport apparatus, comprises an absorbator (204), a desorbator (202), a compressor (206), a liquid pump (212), a heat exchanger (216), a restriction element (122) and a two-component refrigerant (203′, 205′), i.e. a liquid and a gas absorbed in the liquid. The characteristic feature is that the refrigerant comprises a lubricant. In a second aspect the invention relates to a two-component refrigerant suitable for use in a heat pump of the absorption-compression type, comprising a lubricant as a liquid component, and a gaseous component absorbable in the lubricant.

Abstract: A corrosion-inhibited working fluid for an aqueous ammonia absorption cycle apparatus is charged with an alkali metal base in the concentration range of 0.0003 to 0.0063 moles per liter of water. A process for controlling corrosion and hydrogen generation in the aqueous ammonia absorption cycle apparatus is also disclosed.

Abstract: An aqueous absorption fluid composition, process and apparatus wherein the absorption fluid comprises certain ethers providing improved water vapor absorption and thermal transfer in thermal exchange loops used in absorption refrigeration, chilling, heat pump, energy storage and other thermal transfer applications.