Abstract: A dual heat source high-temperature regenerator to solve problems involved in two types of conventional high-temperature regenerators for carrying out heating by using a dedicated burner as the heat source and by using exhaust gas supplied from outside systems as the heat source; namely, the former type has a problem of higher running costs, and the latter a problem of narrower ranges for capacity control. The dual heat source high-temperature regenerator arranges two inner shells and inside an outer shell to form combustion and exhaust gas flues, respectively. The combustion gas flue has a sideways U shape as a whole. The lower end is equipped with a burner, and the upper end connected to an exhaust duct. The exhaust gas flue 62 has a horizontal, straight shape as a whole. One end is provided with an exhaust gas inlet, and the other end connected to an exhaust duct.

Abstract: A multi-stage absorption refrigeration system having an upper stage that includes a generator and condenser that operate at above atmospheric pressure and a lower stage that includes a generator and a condenser that operates at or near atmospheric pressure. The upper stage condenser is placed in heat transfer relation with the lower stage generator to produce refrigerant vapor from solution contained in the lower stage generator. A water condenser is connected to the lower stage generator so that vapor produced in the lower stage generator can be used to heat hot water or other fluid. When the system is placed in a water heating mode, the flow of solution is terminated to the upper stage generator and condensate leaving the upper stage condenser is circulated back through the upper stage generator.

Abstract: Refrigerant vapor generated in a high temperature regenerator is condensed in a condenser, and the refrigerant vapor is changed to refrigerant liquid. Then it is conducted to a first evaporator. The refrigerant vapor evaporated in the first evaporator is absorbed in a solution in a first absorber. The refrigerant liquid conducted from the condenser without vaporizing in the first evaporator is introduced to a second evaporator, and it evaporates in the second evaporator. The refrigerant vapor in the second evaporator is absorbed in the solution in a second absorber. The first and the second evaporator and the first and the second absorber are made of a unitary chamber. The first evaporator is juxtaposed to the second absorber with a heat transfer member. The concentration of the refrigerant in the second evaporator is controlled by a refrigerant liquid controller that controls a flow rate of the refrigerant liquid flowing from the first evaporator at the predetermined value.

Abstract: There is disclosed an absorption refrigerating machine in which evaporators as well as absorbers are arranged in a two-stage manner. A refrigerant, heated by a regenerator, is condensed by a condenser, and then is fed to a first evaporator. The refrigerant, produced in the first evaporator, is absorbed by a first absorber, formed integrally with the first evaporator, and is formed into an intermediate solution, and then is fed to a second absorber. The second absorber comprises a spray absorber which obviates the need for providing a heat-transfer pipe therein. The condensed refrigerant is supplied to a second evaporator, formed integrally with the second absorber, from a refrigerant tank formed at a lower portion of the condenser or at a lower portion of the first evaporator. The refrigerant, fed to the second evaporator, is absorbed by the solution sprayed in a supercooled condition in the second absorber, thereby producing a dilute solution.

Abstract: Lower and upper limit float switches 15a and 15b for detecting the liquid level in high-temperature separator 14, orifice portion 18 and float-associated valve V1 parallel to the orifice portion are provided, with the orifice portion being provided on circulation pipe K2 extending from the gas-liquid separator in a position either upstream or downstream of high-temperature heat exchanger 17. The float-associated valve is closed when the liquid level drops to the lower limit thereof and it is opened when the liquid level rises to the upper limit thereof. During normal operation of the cooling apparatus, the flowing of steam from the gas-liquid separator into the heat exchanging unit can be prevented to ensure smooth passage of the solution. In a diluting operation, the head of the gas-liquid separator suffices to ensure an adequate flow of the solution in spite of the small pressure difference, thereby assuring the diluting operation to proceed smoothly.

Abstract: A sorption unit for air-conditioning technology apparatus with sheets for heat emission, past which water vapor is passed. The sheets are provided with zeolite, that forms string-shaped profiled bodies which are designed to have surface contact with the sheets. Channels for vapor passage are defined between bodies arranged one beside the other. A buffer section and a condenser/evaporator unit complete the sorption unit to form an air-conditioning system.

Abstract: A gas absorption refrigeration apparatus combines two or more separate gas absorption cooling systems. Each cooling system consists of a generator, a condenser, an evaporator, an absorber and tubing connecting the parts to form a complete circulation system for a refrigerant, an absorption liquid and an inert gas. The cooling systems are mounted to a common cabinet with the evaporators of each system being located within the interior insulated compartment of the cabinet. The generator of each cooling system shares a common heat source.

Abstract: Each of the water dispense pipes 46 in a dual pipe unit has nozzle 46a in an area starting just before the evaporating/absorbing compartment 43 and extending to its distal end. The nozzle 46a is a means by which the portion of the circulation pipe that is located upstream of the nozzle and which is exposed to elevated temperature is isolated from the evaporating/absorbing compartment filled with a low-temperature and pressure atmosphere. As a result, the streams of refrigerant water coming from the distributor 45 are suppressed by the nozzles at the distal ends of the individual water dispense pipes so that the liquid pressure becomes uniform among those distal ends, from which the refrigerant water is dispensed into the evaporating/absorbing compartment at a generally uniform pressure.

Abstract: Dual pipe unit 40 is erected vertically and comprises cold water pipe 41 serving as a passageway of cold water and surrounded by coaxial outer pipe 42. The cold water pipe consists of evaporating pipe portion 41a sealed at the bottom and inner pipe portion 41b coaxially provided in its interior. The bottom of the inner pipe portion is open near the bottom of the evaporating pipe portion whereas its top penetrating the top of the evaporating pipe portion to project into the latter is fixed thereto in a liquid-tight manner. The cold water pipe penetrates the top of the outer pipe but it is fixed to the latter in a liquid-tight manner, with its bottom end being spaced from the bottom end of the outer pipe by a specified distance. Evaporating/absorbing compartment 43 is formed between the evaporating pipe and the outer pipe. The channel of cold water through the evaporating pipe portion is narrowed and the cold water collects toward its wall surface, flowing at an increased relative velocity.

Abstract: The absorber for use in absorption chillers of the present invention comprises a plurality of cooling water pipes 2 extending horizontally in the interior of the absorber chamber. A plurality of flat heat transfer plates 1 are spaced apart from one another and arranged horizontally in a vertical position, and the plurality of cooling water pipes 2 extend through these heat transfer plates 1 perpendicular thereto. The pitch Pd of the plates 1 is 3 to 15 mm. Each heat transfer plate 1 is integrally formed on its upper end face with an absorbent receptacle 10 V-shaped in cross section and extending longitudinally of the upper end face. The bottom portion of the receptacle 10 is formed with two rows of absorbent holes 11 positioned upwardly of respective surfaces of the plate 1. The holes 11 of each row are spaced apart from one another longitudinally of the plate 1 and each have an outlet adjoining the surface of the plate 1.

Abstract: In a double-effect absorption chiller wherein the vapor of a refrigerant produced by a high temperature generator is supplied to a low temperature generator 12 for condensation, and the refrigerant liquified by condensation is supplied to a condenser 11, a pipe 7 for supplying the refrigerant liquified in the low temperature generator 12 to the condenser 11 therethrough is provided with an orifice 71 and a control valve 81 as pressure adjusting means. A control circuit 9 is connected to the control valve 81 to hold the valve 81 fully open during the period form the start-up of the chiller until the load is stabilized and thereafter gradually decrease the opening degree of the valve 81.

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.

Abstract: An air-conditioner with high-efficiency differential cold-valley pipes, which include J pipes and a low-pressure circulating pump, has a first arc heat-exchanger which is formed by multiple-layer ladder-shaped corrugated plates and multiple-layer arc J pipe stacked alternatively, and a second arc heat-exchanger which is formed by multiple-layer arc J pipe and multiple-layer wave-shaped film-type evaporation face stacked alternatively. A low pressure pump is connected between the first arc heat-exchanger and the second arc heat-exchanger through pipelines. The air-conditioner solves the problems that the conventional air-conditioner consumes high energy, quality of the air in the room is low and the use of CFCs is confined.

Abstract: The purity of a refrigerant liquid can be maintained to an appropriate level without being varied corresponding to a change in the atmospheric condition and the loading state. A portion of the refrigerant liquid in an evaporator is conveyed from the evaporator to the upper end of a rectifier where it is used as a vapor/liquid contact fluid. A temperature sensor T6 is provided at the upper end of the rectifier for detecting the temperature at the top of the rectifier or the temperature of the refrigerant vapor. The temperature and the purity of the refrigerant vapor are closely related to each other. The higher the temperature, the lower the purity is deteriorated. When the temperature T detected by the temperature sensor T6 is higher than a reference temperature level Tref, a flow control valve V5 is actuated to increase the flow of the refrigerant liquid to the rectifier. This recovers the purity of the refrigerant vapor, thus preventing declination of the purity of the refrigerant vapor in the evaporator.

Abstract: An absorption heat pump achieves improved efficiency by lowering the low cycle temperature of the circulation fluid. This is accomplished by adding a crystallization-inhibiting compound to the circulation fluid which substantially depresses the temperature at which the absorbent salt in the fluid begins to crystallize.

Abstract: A recreational vehicle includes an exterior wall, a floor, a roof, and a refrigerator having a front door, side walls, a rear wall, an absorber located at the rear wall, and a condenser located at the rear wall. The rear wall of the refrigerator is substantially perpendicular to the exterior wall. The recreational vehicle further includes an air passage in which the absorber and the condenser are located. An enclosure extends between one of the side walls and the exterior wall to partially form a side portion of the air passage located between the exterior wall and one of the side walls of the refrigerator. A side intake vent extends through the exterior wall below the enclosure and communicates the side portion of the air passage with air surrounding the recreational vehicle. At least one half of the side intake vent is located forward of the rear wall toward the front door of the refrigerator.

Abstract: An absorption refrigeration system which utilizes absorption with a double separating effect where the pressure of the condenser (K2) is offset relative to the pressure of the second generator (G2). In this system, absorption of the working mixture is achieved using methanol as the refrigerating agent and a compound having a methylphenol group as a solvent. The system is useful for producing cold or heat, particularly for the air conditioning of elementary units of a building.

Abstract: A heat absorption conversion system which, as a single- or multistage system for providing heat and/or refrigeration, has at least one absorber and/or resorber constructed as an absorption heat exchanger. Loads per unit area for mass transfer and heat exchange and the heat transfer coefficient resulting therefrom in the absorber and/or resorber are set to a value as high as possible. To achieve this performance, the heat absorption conversion system has at least one cooled (i.e. nonadiabotic) absorption heat exchanger as the absorber and/or resorber with, as additional components, at least one solution cooler and a pump. These components, together with the absorption heat exchanger, a connection line and a control valve, form a recirculation circuit. This heat absorption conversion system operates even at low heat input temperatures or decreased refrigeration temperatures or elevated cooling medium temperatures.

Abstract: A pump has a rotor made of synthetic resin in a fixed housing which are adjacently arranged while forming a gap between the housing and the rotor to force-feed a medium containing water moisture, in which the rotor is made of a resol-type synthetic resin so that a dimensional change rate of the rotor is 0.15% or less for a medium having a moisture content rate of 10 wt % or less, whereby a sufficient pump performance can be obtained while relatively increasing the degree of freedom of the moisture content rate of the medium to reduce the corrosiveness of the medium.

Abstract: There is disclosed an absorption refrigerating machine in which evaporators as well as absorbers are arranged in a two-stage manner. A refrigerant, heated by a regenerator, is condensed by a condenser, and then is fed to a first evaporator. The refrigerant, produced in the first evaporator, is absorbed by a first absorber, formed integrally with the first evaporator, and is formed into an intermediate solution, and then is fed to a second absorber. The second absorber comprises a spray absorber which obviates the need for providing a heat-transfer pipe therein. The condensed refrigerant is supplied to a second evaporator, formed integrally with the second absorber, from a refrigerant tank formed at a lower portion of the condenser or at a lower portion of the first evaporator. The refrigerant, fed to the second evaporator, is absorbed by the solution sprayed in a supercooled condition in the second absorber, thereby producing a dilute solution.

Abstract: A double effect absorption cold or hot water generating machine can supply hot water from a water heater even when it is used for a cooling operation. The double effect absorption cold or hot water generating machine comprises an absorber, an evaporator, a high temperature generator, a low temperature generator, a condenser, a high temperature heat exchanger, a low temperature heat exchanger, and a water heater.

Abstract: There is disclosed an novel refrigeration apparatus and a method of refrigeration. The novel refrigeration apparatus comprises a desorber/evaporator, a gas/liquid compressor operatively connected to said desorber/evaporator, a resorber/condenser operatively connected to said gas/liquid 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 gas/liquid 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 gas/liquid compressor.

Abstract: An air inlet 16 is formed in a rear surface side vertical wall section 10b, or a single surface of an apparatus main body 10, and an air stream path that extends from the air inlet 16 of the rear surface side vertical wall section 10b to air outlets 14a and 14b formed upwardly aslant in an inclined surface section 13 that is also the single surface provided in the opposite direction. In this air stream path are arranged an air-cooling absorber 17, an air-cooling condenser 19 and fans 15a and 15b provided with their fan axes arranged upwardly aslant in correspondence with the air outlets 14a and 14b. With this arrangement, the air-cooling absorption type refrigerating apparatus is made to have an integrated air intake space and a reduced installation area, and an air stream path extending from the air inlet to the air outlets is made to have a reduced draft loss to allow the flow velocity distribution of the air stream of the heat exchange section to be uniformed.

Abstract: An absorption air conditioning machine that includes a main machine section containing an evaporator unit, an absorber unit, at least one generator unit, a condenser unit, and at least one solution heat exchanger. The heat exchanger tubes of the units and the solution heat exchanger are all supported within a pair of spaced apart tube sheets to provide a highly compact machine assembly.

Abstract: An adsorbent package is provided for mounting to a filter or bleed nipple that is, in turn, attached to a bright tube or other fluid flow conduit in an auto or truck accumulator or receiver dryer. In a preferred form of the invention, a centrally disposed opening is provided in the adsorbent package and is surrounded by a rigid collar. The aperture is dimensioned so that it will be force or snap fit over a flange or the like on a filter.

Abstract: An adsorbent package is provided for mounting to a filter or bleed nipple that is, in turn, attached to a bight tube or other fluid flow conduit in an auto or truck accumulator or receiver dryer. In a preferred form of the invention, a centrally disposed opening is provided in the adsorbent package and is surrounded by a rigid collar. The aperture is dimensioned so that it will be force or snap fit over a flange or the like on a filter.

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 refrigerant management system for use in an absorption cooling and heat machine that includes a holding tank for storing a given amount of refrigerant that is bled from the refrigerant supply line for bringing refrigerant from the evaporator sump into the evaporator header. A return line is located in the top of the tank which returns refrigerant from the tank to the sump when the tank is filled. A drain line containing a control valve is located in the bottom of the tank which, when opened, rapidly discharges the contents of the tank into the sump when the system demands additional refrigerant.

Abstract: Whenever necessary, an operation for diluting an absorbing solution after the stop of the operation is unlimitedly enabled without increasing the size of an absorption refrigerating machine. For the dilution operation after the operation of the absorption refrigerating machine, a pipe line of a dilute solution circulating pipe KD is opened by a dilution valve VD. Thereby, a solution pump P1 and an absorber A can be directly connected through a circulating pipe K6. The operation of the solution pump allows circulating a low-concentration solution and facilitates the dilution of a high-concentration solution to a low concentration. Since this case has nothing to do with a pressure difference in a path, the dilution operation can be performed whenever necessary. Moreover, since it is unnecessary to deal with a pressure loss, it is not necessary to increase the height of the apparatus.

Abstract: An absorption cold/hot water generating machine comprising a refrigerating cycle formed by pipe-connecting an evaporator, an absorber, a solution heat exchanger, a low-temperature generator, a condenser, a high-temperature generator, a solution pump, and a refrigerant pump; the solution pump being an inverter-driven pump; a header for receiving a return solution from the high-temperature generator; a level sensor for detecting the liquid level in the header; and control means for controlling the flow rate of the solution sent from the absorber to the high-temperature generator by controlling the operating frequency of the solution pump, thereby keeping the solution level in the header within a prescribed range; wherein the control means includes sampling mode setting means for setting a solution sampling mode in which the discharge side pressure of the solution pump is brought to over a prescribed pressure through control of the operating frequency thereof.

Abstract: An object of the present invention is to provide a method for forming an initial anticorrosive film in an absorption chiller-heater, by selecting optimal conditions of absorbent solution, steel material surface and film-forming operation for forming a good initial anticorrosive film. In the process for forming an initial anticorrosion film in an absorption chiller-heater having steel parts and containing an absorbent solution comprising lithium bromide as its main component and containing a lithium molybdate corrosion inhibitor according to the present invention, the main characteristics are that at least part of the steel parts of the absorption chiller-heater contacting with an absorbent solution at a temperature of higher than 100.degree. C. include a bare metal surface having an arithmetic mean surface roughness of not more than 1.0 .mu.

Abstract: A rotary heat pump 10 comprises a vapor generator 20, a condenser 24/34, an evaporator 42 and an absorber 40 interconnected to provide cyclic fluid flow paths for a volatile fluid component and an absorbent fluid therefor. To allow operation of the pump close to the crystallization boundary the pump includes crystallization control means which cause the temperature of the fluid in the region prone to crystallization to be raised when the onset of crystallization is detected. For example the pressure increase upstream of a crystallization site may cause warm fluid to be diverted directly or indirectly to increase the fluid temperature at the crystallization site.

Abstract: An absorption refrigerator is minimized in the size and the weight. A sensible heat exchanger 14 and a cooling fan 19 for cooling the sensible heat exchanger 14 are mounted front and rear opposite to each other to form a cooling unit. At one side of the fan 19, a regenerator 3 and a rectifier 6 are aligned vertically one over the other. At the other side of the fan 19, an evaporator 1 and an absorber 2 of a rectangular configuration are provided side by side. A condenser 9 is laid above the cooling unit. The cooling unit, the evaporator 1, the absorber 2, the condenser 9, the regenerator 3, the rectifier 6, and a set of pumps P1 to P4 all are installed in a main housing 20 of substantially a rectangular parallelopiped shape having a depth reduced axially of the cooling fan 19.

Abstract: A triple-effect absorption refrigeration system is provided with an evaporator and an absorber operatively connected to receive a refrigerant vapor discharged from the evaporator. First, second, and third generators are operatively connected to receive an input absorption solution discharged from the absorber and to discharge an output absorption solution for return to the absorber. These first, second and third generators each discharge a refrigerant vapor. A heat source for heating the input absorption solution in the third generator to a first temperature is provided. The heat source separates the input absorption solution in the third generator into the refrigerant vapor and the output absorption solution. The heat source further generates energy laden combustion products. First, second, and third condensers are operatively connected to receive the refrigerant vapor discharged from the first, second and third generators, respectively, and to condense the refrigerant vapor into a refrigerant liquid.

Abstract: An absorption refrigerator uses water as a refrigerant and a halogen compound as an absorption solution, and is characterized in that an oxide film of thickness of 0.02-5.0 .mu.m is formed on a surface of at least one of a heat exchanger and a high temperature regenerator. And a production method of the absorption refrigerator is characterized by oxidizing a surface of at least one of a heat exchanger and a high temperature regenerator at a temperature of 200-800.degree. C., and adjusting a heating temperature and a heating retaining time so that a value of parameter (P), obtained according to P=T (5+log t) is 3.5-6.0.times.10.sup.3, wherein T represents heating temperature (.degree.K), and t heating retaining time (minute).

Abstract: A refrigerator for recreational vehicles comprising a generally cubic cabinet having front, back and top sides along with absorbent-type refrigerating apparatus on the back side. A flap member adjustably mounted on the back side at a position above the refrigerating apparatus extends upwardly and outwardly from the cabinet into sealing engagement with the walls of the compartment in the recreational vehicle in which the refrigerator is installed. The configuration of the flap member and the mounting of the flap member so that it can readily be adjusted to a number of positions enhances the ability of the flap member to prevent gases created by the refrigerating apparatus from propagating into the living quarters of the recreational vehicle.

Abstract: A heat absorption system having a first absorption circuit for operation at a first temperature range and a second absorption circuit for operation at a second temperature range, the temperature range of the second absorption circuit having a lower maximum temperature relative to the first temperature range of the first absorption circuit. The first absorption circuit includes a first circuit generator, a first circuit condenser, and a first circuit absorber operatively connected together. The second absorption circuit includes a second circuit generator, a second circuit condenser, and a second circuit absorber operatively connected together. A common evaporator is operatively connected to each of the first circuit condenser and the second circuit condenser and is in heat exchange communication with an external heat load. The first circuit condenser and the first circuit absorber are in heat exchange communication with the second circuit generator.

Abstract: The condensed water, as condensed by applying the VRC to a regeneration process, and the strong solution, as fed out of a regenerator, are employed as a heat source to preheat a weak solution so that the preheating amount of the weak solution is increased to improve the performance coefficient of a heat pump.

Abstract: An absorption refrigerator includes a generator for separating, by vaporization, a refrigerant from an absorption solution, a condenser for liquefying by condensation the vaporized refrigerant, an evaporator for vaporizing the liquefied refrigerant from the condenser by heat exchange with a heat medium, and an absorber for absorbing the vaporized refrigerant to react against the absorption solution to be supplied from the generator. The evaporator has heat exchanger pipes disposed in the vertical direction and refrigerant discharge nozzles for discharging the refrigerant toward the inner walls of the heat exchanger pipes. Each of the refrigerant discharge nozzles is arranged at a position displaced downward by a predetermined distance from the upper end of each of the heat exchanger pipes.

Abstract: A multiple effect absorption refrigeration system containing a plurality of paired generators and condensers that are staged to operate at successively higher temperatures and pressures. A solution to solution heat exchanger is associated with each stage to exchange heat between strong and weak solution circulating between the absorber and the generator of the various stages. A condensate to solution heat exchanger is included in at least one stage for placing condensate from the condenser of a higher temperature stage in heat transfer relation with solution being delivered into the generator of a lower temperature stage. Condensate from the condensate to solution heat exchanger is expanded to a system component that is operating at a pressure below the operating pressure of the stage being serviced by the condensate to solution heat exchanger.

Abstract: After a running stop command is released, a pump P2 for transferring a solution from the absorber 2 to a regenerator 3 is kept running. The transfer of the solution permits separation of the solution from a refrigerant during non-operation of the refrigerator. The solution saved in the regenerator 3 remains at as a high concentration of the absorbent as that before the end of the operation while the refrigerant is saved in an evaporator 1. This enables the refrigerator to restart its normal operation corresponding to an operation start command.

Abstract: In a cooling unit for an absorption circuit, an absorber, a generator, a condenser, and an evaporator are provided. The absorber is built by at least two mutually connected profiled plates which form lines and ports for connecting the generator to the evaporator. The lines are guided in a meander pattern and two adjacent lines are mutually connected through at least one opening. The absorber can be pivoted by an at least partial inclination of the lines with respect to horizon from a neutral position by an axis extending in parallel to the plate plane by more than 3.degree., preferably more than 6.degree., without the operation of the cooling unit being impeded by the rotation of the plates. This permits the cooling unit to be used on mobile vehicles and boats where frequent inclined positions occur.

Abstract: An improved heat pump including a first tube branched from a tube connected between a solution pump and a rectifier, for making a pressure-elevated strong solution introduced into a solution cooled absorber and the rectifier respectively by a constant amount, wherein heat-exchanged strong solution in the rectifier joins with a strong solution introduced into the solution cooled absorber, a second tube for making the heat-exchanged strong solution introduced from the absorber through the first tube introduced into a distributing plate at the upper portion of an analyzer; a third tube for introducing a refrigerant vapor generated by heat exchanging the strong solution introduced from the first tube to a GAX absorber/regenerator with weak solution of high temperature dropped from the distributing plate placed at the upper portion of the absorber, into a regenerator, and a fourth tube for heat-exchanging a portion of refrigerant introduced from an evaporator to the absorber with the refrigerant vapor introduced f

Abstract: A modified Generator-Absorber-Heat Exchanger (GAX) absorption cycle system and method of operation are provided wherein, in addition to a primary refrigerant circulated through a first refrigerant circuit, a secondary refrigerant is circulated through a second refrigerant circuit to improve the coefficient of performance (COP) of the cycle.

Abstract: A fuzzy control apparatus and method for a branched refrigerant flow and fuel combustion in a multi absorption type-heat pump is disclosed. The heat pump is controlled by automatically determining the operation state of an outdoor unit in relation to indoor loads.

Abstract: An absorption refrigerating/heating apparatus in which a refrigerant vapor generated in the evaporator (1) is absorbed to produce absorption heat by the absorbent in an absorber (2). There are first tube for chilled water in the evaporator, a second tube for cooling water in the absorber, a third tube in an indoor unit (15), and a forth tube in a sensible heat exchanger. The first tube and the second tube are respectively connected to the third tube and the fourth tube in a cooling operation, while to the fourth tube and the third tube respectively in a heating operation.

Abstract: A chiller for cooling a chilling fluid that feeds an air-conditioning system of a building, the chiller comprising firstly a boiler-separator for separating the two components of a refrigerant, one of which components is volatile, by heating and evaporation, and secondly a mixer for reforming the refrigerant by evaporation and absorption.

Abstract: An absorption-type air conditioning process and system for an automobile or other vehicle is disclosed in which the sensible heat from the engine coolant is utilized to drive the generators. The invention, which employs water as the refrigerant and a lithium bromide solution as the absorbent, comprises two successive working solution absorption-generation circuits, the first circuit operating at low-intermediate pressure and the second circuit operating at intermediate-high pressure. An additional feature of the invention is the inclusion of a first and second storage reservoir holding, respectively, chilled refrigerant and concentrated working solution, the incorporation of the reservoirs permitting pre-cooling of the vehicle's interior prior to operation of the vehicle.

Abstract: The basic apparatus of the invention is a triple effect absorption cycle apparatus, comprising first, second and third generators each containing an aqueous absorption fluid and operating at successively higher temperatures; first, second and third condensers operating at successively higher temperatures, and operatively communicating with the generators; first heat exchange means cooperating between the third condenser and second generator, and between the second condenser and first generator, for directing energy therebetween; one, two or three absorbers and one, two or three fluid loops for directing aqueous absorption fluid between absorbers and second heat exchange means for exchanging energy between aqueous absorption fluid flows in said loops; and one, two or three evaporators operatively communicating with the absorbers.

Abstract: A liquid vapor absorption system comprises: one or more absorbers, one or more generators, and a fluid loop for directing refrigerant absorption fluid between the absorbers and generators, heat exchangers for selectively functioning as an evaporator or a condenser and cooperating with an indoor coil for recovering thermal energy,a reservoir for condensed refrigerant,a phase-change thermosyphon loop for directing condensed refrigerant from the reservoir to the heat exchange section of an absorber for removing heat of absorption, anda reversing valve means for selectively directing gaseous refrigerant to the heat exchangers functioning as a condenser, and for simultaneously directing gaseous refrigerant from the heat exchangers functioning as an evaporator to the absorber.