Abstract: A hybrid heat pump system including first compression means operable to form a refrigerant vapor and increases the pressure of the refrigerant vapor; condensing means to receive pressurized vapor and condense the vapor to a liquid; pressure reduction means through which the liquid refrigerant passes to reduce the pressure of the liquid to form a mixture of liquid and vapor refrigerant; evaporator means to receive the mixture of liquid and vapor refrigerant to evaporate the remaining liquid; second compression means including first and second inlet ports and an outlet port to receive a portion of the refrigerant vapor from the evaporator means and the pressurized vapor from the first compression means; increase the pressure thereof; and pass the pressurized vapor to the condensing means through the outlet port; and a conduit to pass a portion of the refrigerant vapor leaving the first compression means to the second compression means.

Abstract: Disclosed are a generator and a condensing system. The generator, a rectifier, a condenser, an evaporator, an absorber and a liquid storage tank are sequentially connected to form a loop, a gas outlet chamber is communicated with the rectifier by a lifting pipe, and a liquid conveying pipe is arranged between a heating chamber and the liquid storage tank. The generator includes the heating chamber and the gas outlet chamber, wherein the gas outlet chamber is connected with the lifting pipe, and has a width gradually reduced in a gas outlet direction.

Abstract: A system and a method for a hybrid heat pump system including first compression means operable to form a refrigerant in vapor form and increases the pressure of the refrigerant vapor; condensing means arranged to receive the pressurized vapor and condenses the vapor under pressure to a liquid; pressure reduction means through which the liquid refrigerant leaving the condensing means passes to reduce the pressure of the liquid to form a mixture of liquid and vapor refrigerant; evaporator means arranged to receive the mixture of liquid and vapor refrigerant that passes through the pressure reduction means to evaporate the remaining liquid to form first and second portions of refrigerant vapor; second compression means including two, first and second inlet ports and an outlet port and operable to: receive at least a portion of the refrigerant vapor from the evaporator means, the pressurized vapor from the first compression means, and the vapor refrigerant from the condensing means through the first and second in

Abstract: A system and a method for a hybrid heat pump system including first compression means operable to form a refrigerant in vapor form and increases the pressure of the refrigerant vapor; condensing means arranged to receive the pressurized vapor and condenses the vapor under pressure to a liquid; pressure reduction means through which the liquid refrigerant leaving the condensing means passes to reduce the pressure of the liquid to form a mixture of liquid and vapor refrigerant; evaporator means arranged to receive the mixture of liquid and vapor refrigerant that passes through the pressure reduction means to evaporate the remaining liquid to form additional refrigerant vapor; second compression means including an inlet port and two, first and second outlet ports and operable to: receive the refrigerant vapor from the evaporator means through the inlet port; increase the pressure thereof; and pass at least a portion of the refrigerant vapor to at least one of the condensing means and the first compression means

Abstract: A heat pump includes an evaporator with an evaporator inlet and an evaporator outlet; a compressor for compressing operating liquid evaporated in the evaporator; and a condenser for condensing evaporated operating liquid compressed in the compressor, wherein the condenser includes a condenser inlet and a condenser outlet, wherein the evaporator inlet is connected to a return from a region to be heated, and wherein the condenser inlet is connected to a return from a region to be cooled.

Abstract: A refrigeration system is provided including a vapor compression cycle (20) having a condenser (22), and expansion valve (24), and evaporator (26) and a compressor (28). A refrigerant is configured to circulate through the vapor compression cycle. The refrigeration system also includes an absorption refrigeration cycle (30) having an absorber (32) and a desorbed (34) arranged in a generally closed loop configuration. An absorption solution is configured to circulate through the absorption refrigeration cycle. The vapor compression cycle and the absorption refrigeration cycle are substantially integrated. The absorber is fluidly coupled to the compressor and is configured to generate a mixture of refrigerant and absorption solution. The desorber is fluidly coupled to the condenser and is configured to separate the refrigerant from the mixture and increase a pressure of the refrigerant vapor.

Abstract: A heat pump includes a first portion for evaporating a working fluid at a first pressure, for compressing the evaporated working fluid to a second, higher pressure, and for liquefying the compressed working fluid within a liquefier, and a second portion for compressing liquid working fluid to a third pressure, which is higher than the second pressure, for evaporating the working fluid compressed to the third pressure, for relaxing the evaporated working fluid to a pressure, which is lower than the third pressure, so as to generate electrical current, and for liquefying relaxed evaporated working fluid within the liquefier.

Abstract: A ground energy collection system is disclosed. The system includes a well configured to absorb ground energy and provide the absorbed ground energy to a first heat transferring fluid. A pump is used to circulate the first heat transferring fluid to an evaporator. The evaporator is configured to: receive the first heat transferring fluid; facilitate heat exchange between the first heat transferring fluid and a second heat transferring fluid; and return the first heat transferring fluid to the well. A compressor then compresses the second heat transferring fluid. An electricity generator generates electricity based on the second heat transferring fluid received from the compressor. A condenser then retrieves heat and liquefies the second heat transferring fluid. An expansion valve is utilized to regulate pressure of the second heat transferring fluid received from the condenser and return the second heat transferring fluid to the evaporator.

Abstract: A cooling system of a vehicle with a fuel cell includes an absorbent circuit with an absorber tank, a regenerator tank, an absorbent pump and a first pressure reduction means and a coolant circuit with a condenser connected to a steam outlet of the regenerator tank, a second pressure reduction means and an evaporator arranged between a steam inlet of the absorber tank and the second pressure reduction means. The regenerator tank is designed to desorb the coolant in solution in the absorbent by absorbing a first quantity of heat and to introduce it in a vaporous state into the condenser. The evaporator is designed to evaporate the coolant while absorbing a second quantity of heat and to introduce it in the vaporous state into the absorber tank. At least one of the first and of the second quantity of heat could be provided by the fuel cell.

Abstract: A cooling apparatus for electric equipment includes a generator configured to receive a heat load from first electric components, a evaporator configured to receive a heat load from second electric components, a closed compartment enclosing the generator and evaporator, and a absorber transferring heat from heated fluid to the outside of the closed compartment. To obtain an efficient and reliable cooling apparatus, the cooling apparatus includes a first expansion device which reduces the pressure of the fluid, and forwards the fluid in a liquid state and with a lower pressure to the secondary cooling element, which transfers heat to the received fluid from the second electric components for evaporating the fluid.

Abstract: This invention belongs to the area of heat pump/refrigeration technology, which provides absorption heat pump of multiterminal heating and the ways of additional adjacent high-temperature heating-side. Refrigerating fluid flows from a generator to a new absorber, and then into a new absorption-evaporator, and finally into the generator. Refrigerating fluid flows from the generator to the new absorption-evaporator, and then into the new absorber, the generator. Refrigerant vapor in the condenser flows through a new throttle, and then into the new absorption-evaporator and the new absorber. Refrigerant vapor in the evaporator flows through the new liquid refrigerant pump, and then into the new absorption-evaporator and the new absorber. The pipeline of heated medium in the new absorber is connected with the external. The invention can form new units of simple structure and high heating temperature, and reduce the temperature requirement of cooling medium or actuated-hot when it is used to refrigeration type.

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 vacuum sorption apparatus includes a first volume region (1) in which a sorber (2) which periodically sorbs or desorbs a refrigerant and a condenser (3) are located, and a second volume region (4) located below the first, in which an evaporator (5) is located, wherein a separating body (6) is located above the evaporator (5) to minimize a free surface area of the liquid refrigerant. The separating body (6) is configured to be vertically movable to compensate for different filling level heights of the refrigerant.

Abstract: In a temperature control system using a controlled mix of high temperature pressurized gas and a cooled vapor/liquid flow of the same medium to cool a thermal load to a target temperature in a high energy environment, particular advantages are obtained in precision and efficiency by passing at least a substantial percentage of the cooled vapor/liquid flow through the thermal load directly, and thereafter mixing the output with a portion of the pressurized gas flow. This “post load mixing” approach increases the thermal transfer coefficient, improves control and facilities target temperature change. Ad added mixing between the cooled expanded flow and a lesser flow of pressurized gas also is used prior to the input to the thermal load. A further feature, termed a remote “Line Box”, enables transport of the separate flows of the two phase medium through a substantial spacing from pressurizing and condensing units without undesired liquefaction in the transport lines.

Abstract: This invention relates to a composition comprising water and at least one ionic liquid, and also to devices capable of executing an absorption cycle using such compositions as a refrigerant pair. This invention also provides a method of cooling using an absorption cycle comprising water as the refrigerant and at least one ionic liquid as the absorbent. The present invention also provides a method of heating using an absorption cycle comprising water as the refrigerant and at least one ionic liquid.

Abstract: A method is provided of operating an adsorption refrigeration system. The system includes a primary adsorption pump which is arranged in communication with a primary chamber containing coolant, a secondary adsorption pump and a high fluid impedance conduit which places the secondary adsorption pump and primary chamber into communication. The method includes saturating the primary and secondary adsorption pumps with coolant while each pump is at its respective operational temperature. The pumps are then heated above their operational temperatures to desorb the coolant such that the coolant pressure in the primary chamber and the secondary adsorption pump substantially equalizes through the conduit while the primary chamber is cooled. The secondary adsorption pump is then cooled causing coolant gas to be adsorbed and, therefore, a reduction in temperature and pressure of the coolant in the primary chamber is effected.

Abstract: In accordance with the present disclosure there is provided an efficient refrigeration system for cooling an environment using ammonia and sodium thiocyanate using a low grade heat source. The refrigeration system comprises a condenser for condensing vaporous ammonia to liquid ammonia coupled to an evaporator. The condenser condenses the ammonia vapour using a heat exchanger. The evaporator evaporates liquid ammonia to vaporous ammonia by absorbing heat from the cooling environment. An absorber absorbs the vaporous ammonia into an ammonia sodium thiocyanate solution and adsorbs vaporous ammonia on to sodium thiocyanate salts. The absorber is coupled to a regenerator through a solution pump for pumping ammonia sodium thiocyanate solution with dissolved ammonia from the absorber to the regenerator. The regenerator regenerates ammonia vapour from the pumped solution and supplies the regenerated ammonia vapour to the condenser and the concentrated solution back to the absorber.

Abstract: The present invention provides a dew point temperature sensor, detects a dew point temperature of supply air that is supplied to a dry room (i.e., the dew point temperature of process side dried air cooled by a cold water coil), and supplies such to a control apparatus as a supply air dew point temperature tdpv. When the supply air dew point temperature tdpv decreases, the control apparatus lowers the rotational speed of a regeneration side fan and a motor (i.e., a motor that drives a desiccant rotor). Furthermore, the dew point temperature of return air and the like may be detected instead of the dew point temperature of the supply air. In addition, the rotational speed of the regeneration side fan alone may be lowered. In addition, the present invention may be of a type that does not comprise the cold water coil or of a type wherein the return air does not return to the process side air.

Abstract: The invention teaches an automatic discharge device for a lithium bromide absorption chiller unit, comprising an automatic pump apparatus, a pump chamber, a gas-liquid separation chamber, and a gas storage chamber. A valve F1 is disposed at the outlet line of the liquid pump. A valve F2 and a gas discharge and liquid feed line disposed between the liquid pump and the valve F1 are connected to the gas storage chamber. A valve F3 is set on the gas duct and liquid return line between the gas storage chamber and the gas-liquid separation chamber. A liquid choke self-closing discharge rubber ball valve, a one-way spring discharge valve, and additionally, an electromagnetic valve or a motorized valve are set on top of the gas storage chamber. The invention simplifies effectively the chiller construction and increases operational reliability.

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: The invention provides an absorption cooling system of the type including a liquid absorbent that remains in the liquid phase throughout the operation cycle, and a refrigerant having both a liquid phase and a vapor phase in the cycle, the basic system being powered by heat extracted from a hot fluid and powered auxiliary components, the system including the five basic components of a generator, an economizer, a condenser, an evaporator and an absorber, and further including a fluid circuit for the rich solution including a circulation pump, a fluid circuit for the lean solution, and for the refrigerant gas extracted from the liquid absorbent and replaced therein, partial circuits for hot fluid and for a cooling fluid, a jet mixer operating to mix saturated refrigerant gas with the lean solution to re-form the rich solution, the improvement comprising installing means for increasing the pressure of the saturated refrigerant gas flowing from the evaporator to the jet mixer.

Abstract: Absorbers for a lithium bromide absorption machine are described. These systems may include a storage tank; a plurality of sprinklers, situated inside the storage tank, and adapted to receive a hot and concentrated lithium bromide solution, and to project the hot and concentrated solution inside the storage tank where the hot and concentrated solution is diluted to produced a diluted solution; a feed pump adapted to export the diluted solution from the absorber; a heat exchanger, positioned outside the storage tank and configured to cool the diluted solution; and a recirculation pump, configured to cause the diluted solution to be communicated from the storage tank to the heat exchanger, and to be returned from the heat exchanger to the plurality of sprinklers in a continuous recirculation process.

Abstract: The invention teaches an automatic discharge device for a lithium bromide absorption chiller unit, comprising an automatic pump apparatus, a pump chamber, a gas-liquid separation chamber, and a gas storage chamber. A valve F1 is disposed at the outlet line of the liquid pump. A valve F2 and a gas discharge and liquid feed line disposed between the liquid pump and the valve F1 are connected to the gas storage chamber. A valve F3 is set on the gas duct and liquid return line between the gas storage chamber and the gas-liquid separation chamber. A liquid choke self-closing discharge rubber ball valve, a one-way spring discharge valve, and additionally, an electromagnetic valve or a motorized valve are set on top of the gas storage chamber. The invention simplifies effectively the chiller construction and increases operational reliability.

Abstract: An absorption, heat-transfer system with an operationally interconnected generator, absorber, condenser, and evaporator; at least two separate heat sources for heating the generator; and a controller for controlling the heat sources. The controller, e.g., a programmed microprocessor, receives inputs from the absorption system, the heat sources, and loads and a lookup table and provides outputs to select and control the heat sources and maximize their efficiency. A heat distributor and a heat recover unit enable heat source management and additional energy utilization.

Abstract: A sorptive heat exchanger (E), which presents a plurality of heat exchange channels (10) in thermal contact with respective sorption channels (11), where sorption material (12) is fixed on the internal surfaces of channels (11).

Abstract: The invention provides an improved air chiller unit mounted on an aircraft for sending cooled air to service carts for serving meals. An air chiller unit is equipped with a refrigeration cycle unit disposed on a casing. The refrigeration cycle unit is equipped with a compressor, a condenser, an evaporator and so on for a refrigerant, and the cooled air is sent via a blower device 60 to a galley etc. A housing 630 of the blower device 60 has an inlet and two outlets 650, 652 for cooled air. A duct member is inserted to one of the two outlets 650 and 652, and the other outlet is sealed. The casing 10 is formed of a honeycomb panel. Since the honeycomb panel has high flexural rigidity, the base plate can support the refrigeration cycle unit by itself. Further, since the panel has superior heat insulating property, the air cooling efficiency can be improved.

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: An absorption cooling device includes an expeller (7) for expelling a working agent from an enriched solvent, a first connecting line (11) for transferring said expelled working agent from said expeller (7) to a condenser (9), a second connecting line (15) for transferring said condensated working agent from said condenser (9) to an evaporator (13), a third connecting line (16) for transferring said evaporated working agent from said evaporator (13) to an absorber unit (17), a fourth connecting line (21) for transferring said solvent depleted of working agent from said expeller (7) to said absorber unit (17), a fifth connecting line (19) for transferring said solvent enriched with working agent from said absorber (17) to said expeller (7), wherein in one end of said fifth connecting line a first liquid level (25) of said solvent is formed and on the other end a second liquid level (29) is formed, and the total surface of said second liquid level (29) is smaller than ten times a medium cross-section of

Abstract: A filter system for an absorption chiller includes a replaceable filter element, a plateable member, and a sacrificial member. The filter receives a weak solution from the chiller's evaporator, receives a stronger solution from the chiller's absorber, and discharges a mixture of the solutions to the chiller's generator. Conveying the weak solution to the filter system avoids creating an accumulation of lithium bromide in the evaporator and helps dissolve or flush inhibitors from the filter element on a continuous basis. Combining the weak and stronger solutions in the filter system attempts to confine a corrosion or copper oxide plating process to an area of the chiller that can be readily serviced. The plateable member and the sacrificial member provide replaceable or consumable members used in the corrosion or plating process.

Abstract: An absorption system powered by low temperature heat for producing at least one of refrigeration and power is disclosed, wherein a low-pressure drop heat reclaimer 1 reclaims heat from the source into a heating agent, which in turn supplies heat to the absorption cycle desorber 5 via internal coils 7. The extra temperature differential normally present in closed cycle heating systems is avoided by using the absorption working fluid as the heating agent, in an integrated system.

Abstract: An absorption cooling device includes

Abstract: An absorption refrigeration unit having a purge system that will sense when the discharge pressure of the solution pump becomes subatmospheric and will automatically increase the speed of the pump to bring the discharge pressure up to a desired level above atmospheric pressure so that a purging cycle can be achieved. The system further monitors the generation solution level and interrupts the purging cycle in the event the solution reaches an undesirable level.

Abstract: An absorption refrigerator having three or four-stage regenerators connected in series wherein a prescribed ratio of concentrated absorption fluid is fed to the high-temperature regenerator by a part of the concentrated absorption fluid directly returned to the absorber.

Abstract: The invention relates to an absorption refrigeration machine using the Platen-Munters system and comprising a generator (7) for evaporating a refrigerant in a solvent, a solvent separator (2) in which the solvent is separated from the refrigerant; a condenser (3) for liquefying the refrigerant; an evaporator (4) in which the refrigerant is evaporated using a dry gas while beeing cooled; possibly a first gas heat exchanger (6); and an absorber (5) in which the evaporated refrigerant is added to the depleted mixture of refrigerant and solvent which is then again evaporated in the generator (7). The output of the evaporator (4) or the output of the first gas heat exchanger (6) which is possibly positioned downstream of the evaporator (4) and the output of the generator (7) discharge into a bypass (8) connected to the absorber (5).

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: 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: The plant has a generator for a refrigerant in rich solution. A condenser is connected downstream of the generator in the refrigerant loop. A first expansion valve is connected downstream of the condenser. The refrigerant vapor produced there is directed into the sump of an absorber. The liquid refrigerant passes from the first expansion valve to a second expansion valve which adjoins an evaporator. Arranged in the absorber is a jet apparatus, whose nozzle is fed with the weak solution from the generator and whose suction space is connected to the evaporator. The weak solution therefore draws the refrigerant vapor out of the evaporator and delivers it into the top region of the absorber. There, a deflection takes place, whereupon the solution that is increasing in concentration is directed over cooling coils and passes into the sump of the absorber. In this way, very effective droplet, film, trickling and immersion absorption occurs.

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 system for providing a fluid refrigerant to a cooling element is provided herein. The system includes a vessel which holds the fluid refrigerant, a heat source evaporating a portion of the fluid in the vessel, and a heat exchanger condensing a portion of the gaseous phase of the fluid in the vessel. A conduit establishes fluid communication between: (i) the vessel and the cooling element; and (ii) the cooling element and the heat exchanger. Importantly, the system controls the flow rate of the fluid refrigerant to the cooling element by controlling the pressure of the fluid in the vessel. The system is particularly useful with cryogenic fluid refrigerants to cool a superconductor for an MRI System.

Abstract: A high efficiency air conditioning system combining a desiccant assisted air conditioner with a heat pump device is disclosed. The heat pump device has a desorber for separating a refrigerant vapor from an absorption fluid; a compressor for compressing the refrigerant vapor; an absorber for absorbing the refrigerant vapor in the absorption fluid; an absorption fluid passage for circulating the absorption fluid between the absorber and the desorber; a refrigerant compression passage for transporting the refrigerant vapor produced in the desorber to the absorber by way of the compressor; and a heat medium passage means for drawing out heat of absorption and heat of desorption generated in the absorber and/or the desorber. Facilities are provided for storing refrigerant and absorption fluid during various modes of system operation and appropriate valving is provided for operating the system in various modes to increase the economic efficiency of system utilization.

Abstract: A cryostat having inner and outer vessels, with a containment vessel disposed in the interior of the cryostat spaced from the inner vessel wall. The containment vessel houses a superconducting coil immersed in a liquid helium bath which is prevented from contacting the inner vessel wall. Primary and secondary shielding arrangements help to intercept heat transferred by gas conduction and radiation. For relatively high power operation wherein the coil is charged and discharged frequently, the inner and outer vessels are fabricated of a non-magnetic composite material.

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: 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: There is provided a vessel storing cryogenic fluid having a passive thermodynamic venting system for effectively and reliably transferring heat in a reduced-gravity environment. The storage vessel has a storage tank for holding the cryogenic fluid under pressure. The storage vessel is compartmentalized using a screen trap so that the heat exchanger of the venting system extends through a compartment which includes only the liquid phase of the cryogenic fluid. A screen gallery, screen trap and vane assembly cooperate to separate the gas and the liquid phases of the cryogenic fluid. The thermodynamic venting system includes a throttle device for reducing the temperature of cryogenic fluid. A conduit in contact with heat exchange elements transfers heat from the liquid phase of the cryogenic fluid to a relief valve for venting the heat external of the storage tank.

Abstract: A magnetic telescope utilized to detect flaws in underground articles such as underground piping, implements multiple stages in the form of geometric and electronic configurations to enhance noise suppression. The geometric configuration includes a differential configuration of two pair of source coils which generate the magnetic flux, and gradiometers which pick-up the magnetic flux. A superconducting quantum interference device (SQUID) is utilized to detect the magnetic flux. The electronic configuration includes circuitry to adjust the current in the source coil pairs to minimize the signal seen by the SQUID when no underground article is present. The electronic configuration also includes feedback circuitry to feed back magnetic flux to the SQUID based on the signal detected by the SQUID. Combining the geometric and electronic configurations provides enhanced noise suppression so that the SQUID is capable of detecting smaller flaws in the underground piping for the same amount of source magnetic flux.

Abstract: An absorption chiller having a high temperature generator and a low temperature generator includes a pressure detecting means for detecting a pressure within the high temperature generator, a concentration fixing control means for controlling a concentration of the solution of the high temperature generator or of the low temperature generator, a selection converter for receiving two output signals from the pressure detecting means and the concentration fixing control means as inputs, selecting and outputting a higher one of these input signals, and a rotational speed controlling device for controlling a rotational speed of the solution pump by the output signal of this selection converter. An absorption solution is controlled adequately in its circulation quantity in accordance with a load from a low load range to a high load range of this absorption chiller, so that the solution is not crystallized even in the low load range, and efficiency during a partial load operation is improved.

Abstract: A high efficiency air conditioning system combining a desiccant assisted air conditioner with a heat pump device is disclosed. The heat pump device has a desorber for separating a refrigerant vapor from an absorption fluid; a compressor for compressing the refrigerant vapor; an absorber for absorbing the refrigerant vapor in the absorption fluid; an absorption fluid passage for circulating the absorption fluid between the absorber and the desorber; a refrigerant compression passage for transporting the refrigerant vapor produced in the desorber to the absorber by way of the compressor; and a heat medium passage means for drawing out heat of absorption and heat of desorption generated in the absorber and/or the desorber. Facilities are provided for storing refrigerant and absorption fluid during various modes of system operation and appropriate valving is provided for operating the system in various modes to increase the economic efficiency of system utilization.

Abstract: Numerous embodiments and related methods for generator-absorber heat exchange (GAX) are disclosed, particularly for absorption heat pump systems. Such embodiments and related methods use, as the heat transfer medium, the working fluid of the absorption system taken from the generator at a location where the working fluid has a rich liquor concentration.

Abstract: The invention provides an absorbing type water cooling-heating apparatus which employs an electrically-operated valve and an improved method of diluting a solution for automatically changing between heating operation and cooling operation only by operating a cooling-heating change-over switch.