Abstract: A system has a compressor, a heat rejection heat exchanger, first and second ejectors, first and second heat absorption heat exchangers, and first and second separators. The heat rejection heat exchanger is coupled to the compressor to receive refrigerant compressed by the compressor. The first ejector has a primary inlet coupled to the heat rejection exchanger to receive refrigerant, a secondary inlet, and an outlet. The first separator has an inlet coupled to the outlet of the first ejector to receive refrigerant from the first ejector. The first separator has a gas outlet coupled to the compressor to return refrigerant to the compressor. The first separator has a liquid outlet coupled to the secondary inlet of the ejector to deliver refrigerant to the first ejector. The first heat absorption heat exchanger is coupled to the liquid outlet of the first separator to receive refrigerant and to the secondary inlet of the first ejector to deliver refrigerant to the first ejector.

Abstract: A thermally driven heat pump includes a low temperature evaporator for evaporating cooling fluid to remove heat A first heat exchanger located at an outlet of a converging/diverging chamber of a first ejector receives a flow of primary fluid vapor and cooling fluid vapor ejected from the first ejector for condensing a portion of the cooling fluid vapor An absorber located in the first heat exchanger absorbs cooling fluid vapor into an absorbing fluid to reduce the pressure in the first heat exchanger A second heat exchanger located at an outlet of a converging/diverging chamber of a second ejector receives primary fluid vapor and cooling fluid vapor ejected from the second ejector for condensing the cooling fluid vapor and the primary fluid vapor A separator in communication with the second ejector, the low temperature evaporator and the primary fluid evaporator separates the primary fluid from the cooling fluid.

Abstract: The invention relates to vapor absorption refrigeration. The invention provides methods for carrying out vapor absorption refrigeration, and a vapor absorption refrigeration installation. The invention provides also a method for operating an absorption stage of a vapor absorption refrigeration system and an absorption stage installation for a vapor absorption refrigeration installation.

Abstract: A method and apparatus for preventing loss of a cooling fluid from a boiler in an aircraft by incorporating an absorber material is provided. In some aspects, an apparatus may include a base section, a top section, a cooling fluid, and an absorber material disposed in the base section. The absorber material may be configured to retain the cooling fluid therein. The apparatus may further include a barrier disposed between the base and top sections. The barrier may be configured to retain the absorber material in the base section while allowing the cooling fluid to pass therethrough.

Abstract: An absorption chiller system is provided. The system includes an evaporator, an absorber, a divider, a recirculating loop, and a primary heater. The evaporator includes a first working fluid inlet and a first working fluid outlet. The absorber includes a second working fluid inlet and a second working fluid outlet. The divider has opposing first and second sides, wherein the first side is in fluid communication with the evaporator and the second side is in fluid communication with the absorber. The recirculating loop connects the first working fluid outlet back to the evaporator, and the primary heater is disposed in thermal communication with the recirculating loop.

Abstract: A passive heat sink for cooling an electronic component such as a high-performance processor. The heat sink includes a shell with a surface that is positionable adjacent a heat generating surface of the electronic component. The shell includes a heat exchanger portion with cooling fins extending outward and positioned in a fan-provided airflow. A generator compartment is provided within the shell with a generator vessel for containing an absorbent, and the generator compartment is maintained at a pressure lower than ambient. The generator compartment conducts heat away from the electronic component to the absorbent in the generator vessel. An absorber compartment, at a pressure lower than the generator compartment, is provided within the shell above the generator compartment, and, in use, an absorption refrigeration cycle contained within the shell is activated by heat from the electronic component. A bubble pump moves absorbent from the generator compartment to the absorber compartment.

Abstract: Conductive nonwoven webs are disclosed. The nonwoven webs contain pulp fibers combined with conductive fibers. In one embodiment, the webs are made in a wetlaid tissue making process.

Abstract: A passive heat sink for cooling an electronic component such as a high-performance processor. The heat sink includes a shell with a surface that is positionable adjacent a heat generating surface of the electronic component. The shell includes a heat exchanger portion with cooling fins extending outward and positioned in a fan-provided airflow. A generator compartment is provided within the shell with a generator vessel for containing an absorbent, and the generator compartment is maintained at a pressure lower than ambient. The generator compartment conducts heat away from the electronic component to the absorbent in the generator vessel. An absorber compartment, at a pressure lower than the generator compartment, is provided within the shell above the generator compartment, and, in use, an absorption refrigeration cycle contained within the shell is activated by heat from the electronic component. A bubble pump moves absorbent from the generator compartment to the absorber compartment.

Abstract: A system and method for air-conditioning motor vehicles and, in particular, to an air-conditioning systems for motor vehicles having adsorption heat pumps. The apparatus includes a two adsorber chambers, each connected to a condenser and an evaporator via different connection elements; a vacuum shell for enclosing the adsorber chambers, the condenser, and the evaporator, wherein the vacuum shell is not self-supporting; and one or more adsorbers housed in the adsorber chambers, wherein the adsorbers are comprised of a carrier material coated by a sorbent. The method includes using an adsorption heat pump having one or more adsorber chambers, wherein adsorption and desorption are alternated between the adsorber chambers. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A system and method for air-conditioning motor vehicles and, in particular, to an air-conditioning systems for motor vehicles having adsorption heat pumps. The apparatus includes a two adsorber chambers, each connected to a condenser and an evaporator via different connection elements; a vacuum shell for enclosing the adsorber chambers, the condenser, and the evaporator, wherein the vacuum shell is not self-supporting; and one or more adsorbers housed in the adsorber chambers, wherein the adsorbers are comprised of a carrier material coated by a sorbent. The method includes using an adsorption heat pump having one or more adsorber chambers, wherein adsorption and desorption are alternated between the adsorber chambers. The instant abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.

Abstract: A portable air conditioning unit (10) that is designed to produce cooled air without the need for a cooling refrigerant. The unit (10) includes an enclosure (12) that houses an air duct (40) having an air input port (42) attached to a fan (48) that is powered by a rechargeable battery pack (34), and an air exhaust vent (36) that protrudes through an air exhaust opening located on a first panel (24) located on the enclosure (12). The air exhaust vent (36) passes the cooled air through a flexible air passage hose (90) having an air output connector (96) that is attached to a structure air input port (102) located on a cooled-air receiving structure (100). The structure (100) can consist of various structures which include a bed sheet (140), a sleeping bag (148), a tent (178), a field suit (204) or a flexible non-porous drape (230) that is dimensioned to be draped over the back of an animal (304) such as a horse.

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: The invention relates to refrigeration using a thermochemical system based on the coupling of two reversible physico-chemical phenomena between a gas and a solid or liquid sorbent, one at low temperature (the LT phenomenon) and the other at a higher temperature (the HT phenomenon). The LT phenomenon is a liquid/gas phase change of the fluid G or an absorption of the fluid G by a liquid sorbent. The HT phenomenon is a reversible sorption of the fluid G by a liquid or solid sorbent. The endothermic phase of the LT phenomenon takes place in a reactor thermally isolated from the ambient environment. The exothermic phase of the LT phenomenon takes place in a condenser in communication with the reactor in which the HT phenomenon takes place, the condensed fluid G then being transferred to the reactor in which the endothermic phase of the LT phenomenon takes place.

Abstract: A sorption cooling apparatus for cooling a thermally insulated cooling container 1, with a sorber container 5 containing a sorber material 7 which, during a sorption phase, sorbs a working fluid which evaporates in an evaporator 2 that is disposed in the interior chamber of cooling container 1 and with a valve 4 between sorber container 5 and evaporator 2, which valve can be shut off and which can stop the flow of the working fluid steam, with an evaporator blower 12 being disposed along evaporator 2, which evaporator blower passes an air stream over the evaporator, and with a sorber blower 10 being disposed along sorber container 5, which sorber blower can circulate air around the container containing the sorbent material.

Abstract: A method of controlling the capacity of an absorption chiller by regulating the heat input to a generator in response to a selected one of two system variables. The first variable involves the measured chilled water temperature leaving the system evaporator and the second involves the calculated solution concentration that is being returned to the absorber. Data relating to each variable is sent to a selector where it is processed so that the data can be used to control the heat input to the generator. The temperature data is used to control the heat input during normal chiller operation, however, the selector changes over control to the concentrate related data when the solution concentration level approaches the solution crystallization limit.

Abstract: There is disclosed an novel refrigeration apparatus and a method of refrigeration. The novel refrigeration apparatus comprises a desorber/evaporator, a scroll compressor operatively connected to said desorber/evaporator, a resorber/condenser operatively connected to said compressor, an expansion device operatively connected to said resorber/condenser and to said desorber/evaporator and a circulating refrigerant comprising carbon dioxide and a liquid co-fluid in which the carbon dioxide is differentially soluble. The refrigeration method comprises compressing carbon dioxide gas and a liquid co-fluid in a scroll compressor to an increased pressure, such that carbon dioxide at least partially dissolves in the liquid co-fluid, and reducing the pressure on the liquid co-fluid containing the dissolved carbon dioxide so that dissolved carbon dioxide comes out of solution with the liquid co-fluid, and recirculating the gaseous carbon dioxide and liquid co-fluid to the scroll compressor.

Abstract: A Vapor Recompression Absorber (VRA) for reprocessing a concentrated solution of water refrigerant and Lithium-Bromide salt from at least one solution concentrator in a closed chiller system, the VRA being comprised of an upper heat-in absorption chamber and a lower heat-out evaporation chamber and sump separated by a thin polymer heat transfer wall, strong solution from the system applied as a falling film to the heat-in side is recirculated, while strong solution applied as a falling film to the heat-out side and evaporation therefrom transported by a vapor compressor to the absorption chamber and condensed for recirculation, the sump solution being being strengthened and delivered to and evaporated in the absorber of the chiller system for maximized chilling of a water distribution system.

Abstract: A failure diagnosing system for an absorption chiller including an evaporator, absorber, etc. comprises a plurality of sensors for measuring at least one representative temperatures of each of two fluids participating in heat exchange in a specified heat exchange unit, and an arithmetic unit for receiving measurement data from the sensors. The arithmetic unit comprises a circuit for calculating an actual temperature difference using a simple calculation equation defined by a linear expression, a circuit for calculating the amount of heat exchange by the absorber, and a circuit for calculating the degree of abnormality of the absorber by comparing the actual temperature difference with an ideal temperature difference for the same amount of heat exchange as the calculated amount.

Abstract: A unit of apparatus for reprocessing concentrated absorbent solution in a closed absorption chiller, for discharge of water refrigerant through an evaporator for heat-in effect from a heat distribution system, and discharge of said absorbent solution reconcentrated thereby for absorption of said water refrigerant after chilling and heat-out effect to a cooling tower, characterized by vapor compression from an evaporator followed by liquification by a condenser with heat transfer from the condenser into the evaporator, increasing solution concentration 1.1% and increased chilling capacity of 23%, with a 7.1% increased coefficient of performance, resulting in a 23% increase in chilling.

Abstract: The present invention pertains to a device for cooling testing tubes during sampling by evaporating a liquid. The cooling device causes a controlled cooling effect that is practically independent of the state of the ambient air during the sampling and is easy to handle. After flowing through the testing tube (2), the gas to be investigated flows through a layer of filler (7) that surrounds the testing tube (2) and is impregnated with a liquid.

Abstract: A new absorbent for water vapor is disclosed which is non-oxidizing and is suitable for use as the absorption working pair in combination with H.sub.2 O in absorption heat pumps, and also as a liquid drying agent. The absorbent is comprised of a mixture of at least two alkali metal thiocyanates, preferably KCNS and NaCNS. The preferred weight ratio is between 3 and 4, which remains liquid at all water vapor pressures above 1/16 ATA (curve "30 Na" on the Figure). Further advantages are obtainable by incorporating at least one of lithium cations, cesium cations, and hydroxide anions in the absorbent mixture.

Abstract: The invention provides a working fluid for an absorption refrigeration, cooling or heating system comprising a mixture of dimethyl formamide and N-methyl-2-pyrrolidone as the absorbent therein.

Abstract: An absorbent in a solution which comprises at least one of bromides taking a dihydrate form at room temperature and at least one of halides taking a hexahydrate form at room temperature has a high solubility and a low cost, and is used in a closed, cyclic absorption-type refrigerator.

Abstract: Working fluid/solvent compositions for use in absorption heating and cooling equipment, which compositions comprise a chlorofluoroethane with a boiling point between -40.degree. and +50.degree. C. and at least one solvent with a boiling point above 100.degree. C., the solvent being at least one material having the formula:C.sub.m Cl.sub.2m+1 --(CF.sub.2 --CFCl).sub.n --Xwherein m is zero or one, n is an integer from one to four, and is at least two when m is zero, and X is hydrogen or chlorine, X being hydrogen only when m is one.

Abstract: A water vapor absorbing composition containing CsOH is disclosed which is useful in absorption cycle heat pumping processes and apparatus. When combined with at least one of KOH and NaOH, the absorbent makes possible exceptionally high lifts of the temperature of heat which is initially at low ambient temperatures. Acceptably low corrosion rates are achieved with standard materials of construction using ordinary corrosion inhibitors.