Sorbent type

An absorption refrigeration apparatus includes an annular absorber-evaporator surrounding a condenser both of which are evaporatively cooled by wetting their exterior surfaces and by flowing a stream of ambient air over the wetted surfaces. The refrigerant vapor generator is disposed within the condenser...     

An alcohol circuit for use in an absorption refrigeration system for circulating alcohol through the system along an independent path of travel which prevents the alcohol from stagnating within the evaporator section of the system. Further means are provided to precondition the alcohol prior to its introduction...     

An alcohol reclaiming apparatus for use in an absorption refrigeration system having a separator operatively connected to the system condenser for removing alcohol from liquid refrigerant prior to passing the refrigerant from the condenser section to the evaporator section of the system. The separated...     

In an absorbtion refrigerating installation each evaporator-absorber unit has a group of vertical pipes secured at their ends in pipe sheets. Provided in the upper portion of the units is an outlet for the liquid to flow down outside the pipes. Both, in the passages of the pipes and between the pipes...     

A combination vapor compression and refrigeration cycle employing a mechanical compressor for developing high temperatures. The suction end of the compressor is exposed to both the vapors discharged from the refrigeration evaporator and a mixture of oil foam and refrigeration vapors discharged from an...     

An absorption refrigeration system utilising a pair of refrigerant fluids one of which constitutes a distillate, the other of which constitutes an absorber, the fluids being separated from one another in a closed circuit, by a distillation process, the more volatile vapor phase (namely the distillate)...     

An improvement in refrigerators of the absorber type in which heat from a flame circulates the refrigerant in the refrigerating cycle, particularly for use in caravans. To prevent the flame being extinguished in draughty conditions there is provided shielding means for protecting the flame, a flue extending...     

Solutions containing lower aliphatic alcohols, the halides of lithium, calcium, strontium and barium and water are used as absorbent-refrigerant compositions in absorption refrigeration systems.

This invention relates to a refrigerating process according to the known compression-absorption method, in which a solution of gas in a liquid absorbent is conducted in a closed cycle from an absorber to an evaporator in which by heat supply thereto a certain amount of gas is expelled from the absorbent...     

In an absorption refrigerator having a non-electric boiler heating system, a box having a coolable interior and a side at which refrigerating equipment is mounted, the refrigerating equipment including a boiler and a heating burner located adjacent the boiler for heating the same, electrically energizable...     

An arrangement of an evaporator, an absorber, a generator and a condensor within a shell of a single effect absorption type refrigerator or a multiple effect absorption type refrigerator, such as a double effect or triple effect type refrigerator. Positioned on opposite sides within the shell are an...     

A double effect absorption system having improved thermal efficiency is provided wherein a part of a weak solution fed from an absorber to a high pressure or first generator is bypassed to a second generator and the bypassed solution is transferred with the heat energy from refrigerant passed through...     

Process for recovery of heat characterized by the concentration of heat from a heat source and transfer of the heat to raise the temperature of a heat receiving medium above that of the heat source.

An absorption refrigeration system utilizes a solar collector in the heat input circuit.

An absorption refrigeration system utilizes a solar collector in the heat input circuit and includes means within the collector housing for condensing water vapor released from the absorbent solution. Ambient air abstracts heat from the vapor and causes condensation thereof.

A home heating and cooling system consisting of a pair of large water tanks and a heat-operated absorption-type refrigeration system disposed between the tanks and operable to transfer heat from one tank to the other. The "hot" tank supplies hot water for operating a hot water home heating system, supplies...     

An improved heating or cooling system based on absorption principles is disclosed and claimed herein. A closed system is provided with a refrigerant-absorbent solution where separation of the refrigerant-absorbent is accomplished by a semi-permeable membrane. The refrigerant-absorbent solution at its...     

An absorption refrigeration apparatus provided with a single pipe boiler system having a pump and a standpipe containing a rectifier, and a boiler, with the latter having heat supplied to it. The arrangement permits one to choose a more favorable reaction ratio of the pump in the apparatus, or the absorber...     

In an absorption refrigeration system comprising a generator, a condenser, an evaporator, an absorber and a heat exchanger, a compressor is provided to improve generator output and performance. The compressor is operative between the evaporator and the absorber or between the generator and condenser...     

Air conditioning apparatus is disclosed. The apparatus includes a thermal compressor which is used to regenerate an aqueous hygroscopic liquid, e.g., a solution of lithium chloride or lithium bromide in water. The regenerated hygroscopic liquid is used both for humidity control in air conditioning apparatus...     

A system to accomplish both air cooling and air heating of indoor space by utilizing solar energy. In principle the disclosed system is an absorption refrigeration system, wherein a solution of an evaporable refrigerant in a less evaporable solvent is passed through a solar collector-generator, but the...     

The present invention relates to an improvement of a solar refrigeration system. The solar refrigeration system has been improved by combining a solar collector-generator and a heat exchanger into one unit to increase the performance efficiency of the system by eliminating heat losses. The solar collector-generator...     

A sorption heat pump including a fuel energized discharge unit from which heated fluid media for the heat pump is provided and a circuit having the fluid media circulated therethrough and arranged to include a heat exchanger, an absorber, pump devices, a temperature level changer and an energy consumption...     

An absorption refrigeration system having a generator that includes a first, or primary, heat exchanger operatively connected to a low temperature energy source and that includes a second, or auxiliary, heat exchanger operatively connected to a high temperature energy source. Control means are provided...     

The system contains an unique solar collector for transferring heat energy from the sun to a solution comprising a two-phase refrigerant and a fluid absorbent. Solar radiation causes a vaporization of the refrigerant which exits from the solar panel through a separate path from the remainder of the fluid....     

The absorption heat pump installation operates with water as a working medium. The installation is equipped with an energy accumulator which acts as a direct evaportor and is operated through the choice of a suitable hydroscopic absorption medium at the triple point of water (6.1 mbar, 0.degree. C.)...     

In an absorption refrigeration system comprising a generator, a condenser, an evaporator, an absorber and a heat exchanger, a compressor is provided to improve generator output and performance. The compressor is operative between the evaporator and the absorber or between the generator and condenser...     

This disclosure documents the invention of adapting an economizer and an air heater to an absorption heat pump. The heat pump will have as its prime source of power, heat generated from burning a source of fuel. The air used in the burner will be heated above outside ambient temperatures by a source...     

The present application discloses an absorption refrigerating system which comprises a main generator constituted by a high temperature generator to evaporate and separate a refrigerant from an absorbent with a high temperature heat source being utilized as a heat source, and a low temperature generator...     

The present invention relates to a chiller of the type using water as refrigerant and aqueous lithium bromide or a similar compound as absorbant wherein non-condensables are purged with water vapor from the condenser to the evaporator, wherein means are provided for condensing part of the water vapor...     

The present invention relates to a chiller of the type using water as refrigerant and aqueous lithium bromide or the like as absorbant, wherein 2-ethyl n-hexanol or a similar compound is used as additive to said solution to improve heat transfer in the absorber, comprising a separator for separating...     

An absorption refrigeration system having a generator that includes a first, or primary, heat exchanger operatively connected to a low temperature energy source and that includes a second, or auxiliary, heat exchanger operatively connected to a high temperature energy source. Control means are provided...     

Solar powered refrigeration apparatus is disclosed in which an absorption refrigeration system is operated directly by solar energy. One end of a heat pipe is thermally connected to the boiler of the absorption refrigeration system, and a solar collector is thermally coupled to the other remote end of...     

The present invention relates to an improved absorption refrigeration device of the type using a lithium halide/water cycle wherein baffles defining a substantial pathway are provided over which superheated concentrated lithium halide solution is passed so as to substantially reduce the degree of superheating...     

In an absorption refrigeration system comprising a generator, a condenser, an evaporator, an absorber, a heat exchanger, and a compressor to improve generator output and performance, a variable valve on the line from the generator to the absorber is provided to maintain constant cooling output.

A heat accumulator and heat pipes are connected to an absorption cooling and heating system including a generator, two outdoor heat exchangers, an expansion valve for cooling, an expansion valve for heating, an expansion valve for defrosting, two indoor heat exchangers, a pressure reducing valve for...     

A combination of an internal combustion engine and an absorption type refrigeration system is designed to make a simultaneous use of both of the engine exhaust gas the heated engine cooling water. The internal combustion engine and the absorption type refrigeration system are combined such that the exhaust...     

An absorption type heat pump system including a first heat pump of the absorption type and a second heat pump of the absorption type. The first heat pump includes a generator equipped with a heating source, a condenser, an evaporator, an absorber, and a solution heat exchanger for drawing off hot water...     

An absorption type heat pump device including a generator for generating refrigerant vapor, a condenser, an evaporator, an expansion valve, an absorber, a solution pump, a passage member for leading strong solution from the generator to the absorber, and a heat exchanger. The heat exchanger and/or the...     

The efficiency of an absorption heat pump system is improved by conducting liquid from a second stage evaporator thereof to an auxiliary heat exchanger positioned downstream of a primary heat exchanger in the desorber of the system.

An improvement in an absorption heat pump cycle is obtained by adding adiabatic absorption and desorption steps to the absorber and desorber of the system. The adiabatic processes make it possible to obtain the highest temperature in the absorber before any heat is removed from it and the lowest temperature...     

To obtain optimum heat transfer from a heat source to an absorption refrigeration cycle refrigerant, use is made of a doughnut-shaped generator or refrigerant holding tank and a heat source in the specific form of a reactor, as described and illustrated in U.S. Pat. No. 3,217,701, wherein the reactor...     

A solar heating system including a chemical heat pump for storing thermal energy by converting same into energy in the form of a difference in the concentration of an aqueous multiple-component chemical solution which actuates the chemical heat pump, and a solar collector of a low temperature solar collection...     

An absorption refrigeration system having a generator, a rectifier, a condenser, an evaporator, an absorber and heat exchangers which are connected by means of conduits in an airtight manner so that circulations for refrigerant and for absorbent solution are formed, wherein the rectifier is mounted upright...     

An absorption refrigerating system is provided wherein the total circulation flow rate of a diluted solution (absorbing liquid) by pumps is adjustable according to the measured change in the refrigerating load so that the flow rate of the diluted solution is kept at desirable levels to balance with changing...     

A heat pump for heating and/or refrigeration comprises a combination of a working fluid circuit including a steam ejector or a heat operated piston heat pump device and absorption heat pump section. The first circuit is energized with relatively high-grade, input heat and produces lower-grade output...     

This invention relates to a highly efficient refrigeration system and process, driven by low-grade heat and operated at pressures substantially below atmospheric, which provides cooling at temperatures generally within the range from about -12.degree. to about +15.degree. C. Solutions of normally liquid,...     

This invention relates to a highly efficient refrigeration system and process, employing two absorption refrigeration cycles in series operation, the first cycle comprising an ammonia-aqueous ammonia system and the second cycle comprising a novel absorption system and process, driven by low-grade heat...     

An absorption cooling and heating system including a generator, a condenser, a subcooler, an evaporator, an absorber and an absorption heat exchanger, wherein the generator includes a container of a shape in which the liquid level of a solution contained therein has, in a vertical cross section, a horizontal...     

A deep mine cooling system comprising a compressor supplied with air and rotatively driven by a motor and an expansion turbine supplied with compressed air from said compressor and driving an actuating unit, wherein the compressed air, after leaving the compressor but prior to reaching the expansion...     

The invention relates to a heat pump with compressor, in the thermodynamic system of which, solution is used. This way varying temperature conditions take place on the heat intake and heat discharge side. Provided that varying temperature system appears also on the demand side, adapting the heat pump...     

In a hermetically circulating absorption type refrigerator including a regenerator, a condenser, an evaporator, an absorber and a heat exchanger, the regenerator has an absorbing solution heating tube flux provided between tube plates. The tube plates are encased within a shell of the regenerator. Non-soluble...     

A cooling method and a system therefor to remove sensible heat of a whole room to be cooled installed with a cooler of an absorption refrigerator utilizing a heating medium, and to dehumidify air of the room by utilizing thermal energy of the heating medium for regenerating the dehumidifying function...     

An absorption heat pump system having a generator, a condenser, an evaporator and an absorber connected hermetically to form closed cycles for a refrigerant and an absorbent, comprising a control means disposed in the refrigerant passage leading from said condenser to said evaporator and adapted to continuously...     

The invention relates to a refrigeration device using solar energy. This device includes a refrigeration fluid, such as water, which circulates between the solar energy heat exchanger 8 containing zeolite, and an evaporator 2 located in a cooling chamber 1 through a condenser 6, then return to the exchanger...     

Thermal energy contained in a flow of hot fluid is employed to produce a heat source liquid at a temperature higher than that of said hot fluid by transferring heat from said hot fluid to a liquid at a relatively low superatmospheric pressure, which liquid contains two chemical substances in combination...     

A triple-stage absorption refrigeration system including three generators. Solution is supplied from absorber directly to each of the three generators in parallel with each other without flowing through any other generator, and cooling medium is made to flow firstly through the condenser and then through...     

A rotary inertial thermodynamic absorptive system which can be used as a gas-driven heat pump, a heat-flow-driven gas pump, or, in combination, a heat splitter for moving low-grade heat energy from a lower temperature source to a higher temperature heat sink. In one embodiment, an absorptive type rotary...     

A heat-generating device comprising a solution tank containing a heat-generating composition composed of a solution capable of generating the heat of absorption when absorbing a solvent and a certain specific oil, a solvent tank for supplying the solvent to the solution tank, and a heat-exchanging chamber...     

An absorption refrigeration system has an intermediate temperature desorber-resorber pair. A valve between the desorber-resorber pair is modulated to control the capacity for load matching.

A steam generating and condensing apparatus having a steam generating chamber in which a diluted solution flowing from an absorption device and containing a refrigerant absorbed therein flows outside of the pipes of a steam generating heat exchanger to evaporate the refrigerant from the diluted solution...     

An absorption refrigeration system utilizing a low temperature desorber and intermediate temperature resorber. The system operates at three temperatures and three pressures to increase the efficiency of the system and is capable of utilizing a lower generator temperature than previously used.

The present invention is provided with an evaporator, a primary absorber, a plurality of generators, a condenser and a direct contact type heat exchanger which is provided with auxiliary evaporator-absorber stages in a plural set. These evaporator-absorber stages in a plural set are divided into a plurality...     

An absorption heat pump is described comprising at least an evaporator, an absorber, a vapor generator and a condenser and in which at least one of the components is in the form of one or more rotatable plates across the thickness of which plate(s) a heat transfer takes place. Such a heat pump can be...     

An air cooling type absorbing cooler provided with an air cooling type absorber having a structure in which, in cooling the absorbing solution and the refrigerant vapor by air, the absorbing solution and the refrigerant vapor on the inlet side of the absorber are cooled by the cooling air on the outlet...     

An absorption heat pump comprising a heat-mass-exchanger (57) which is arranged in an absorber (3) and has a metal pipe (77) to which a metal fin is secured. The metal fin consists of a number of interconnected lamellae (81) which are helically wound around the pipe (77), while adjacent lamellae (81)...     

A gas-to-liquid heat exchanger system which transfers heat from a gas, generally the combustion gas of a direct-fired generator of an absorption machine, to a liquid, generally an absorbent solution. The heat exchanger system is in a counterflow fluid arrangement which creates a more efficient heat transfer.

Disclosed is a method and apparatus for refrigeration utilizing a combined mechanical and absorption cycle. Two immiscible or only partly miscible refrigerants are mixed and evaporated in an evaporator to cool a process stream. The refrigerants are separated in an absorber which absorbs one of the refrigerants...     

An absorption type chiller/heater unit is actuated to generate cold water for air cooling and hot water for heating and/or hot water supply by utilizing, as a heating source, the exhaust gas from an internal combustion engine and the cooling water heated in and delivered from the water jacket. When generating...     

Heat pumps, refrigeration machines, heat transformers and the like which function on the resorption principle using a binary working medium, especially a mixture of ammonia and water, operate with two solvent circuits in which the working medium that is in the liquid phase is raised from a lower to a...     

A system for controlling a sorption heat pump. Fuel is fed to a burner via a feed line and a fuel valve. The burner heats a generator containing a heat transfer fluid such as a mixture of water and ammonia and generates pressure inside the generator. The vapors produced by the heating are condensed in...     

An absorption-resorption heat pump comprising a first circuit including a desorber and an absorber interconnected by conduits having a heat exchanger provided therein, so that a first circulatory flow of a first system of liquid substances can be maintained by suitable means from the desorber to the...     

A process for producing anhydrous ethanol, using an apparatus comprising a combination of a concentration column, an azeotropic distillation column and a solvent recovery column, and capable of effectively utilizing the vapor at the tops of the concentration column and the azeotropic distillation column,...     

An air-cooled absorption refrigeration system wherein refrigerant vapor is introduced into a vertical tube absorber at the top and bottom, or top, bottom and center thereof so as to allow the refrigerant vapor to flow into the absorber at different scattered positions whereby a sufficient flow passage...     

A centrifugal absorption heat pump in which the heat released on condensation of the vapor of a first working fluid is used to generate a vapor from a solution of a second working fluid, and/or heat released on absorption of a third working fluid in an absorbent is used to evaporate a fourth working...     

An absorption refrigeration system includes an evaporator 1, an absorber 6, a regenerator 9, and a condenser 13. In the evaporator 1, water as a refrigerant is caused to evaporate by depriving a chill carrier fluid 4 of its heat. The water vapor 5 from the evaporator 1 is absorbed into an absorbent consisting...     

Improvements in heating and cooling systems which are steam powered, the (winter) heating system utilizing a steam/liquid heat exchanger and the (summer) cooling system utilizing a steam powered absorption machine; methods of and apparatus for substantially improving a steam powered heating system conventionally...     

The present invention relates to an improved heat pump system of a heating system which also comprises a utilization circuit. The heat pump system comprises a generator, an absorber, a condenser and an evaporator, and the utilization circuit for circulation of a heat carrier medium comprises heat exchanger...     

An absorption-type heat pump includes an evaporator 1, an absorber 7, a regenerator 12, and a condenser 17. In the evaporator 1, water 4 as a refrigerant is flash-evaporated through a flash evaporating device 2. The water vapor 6 from the evaporator 1 is absorbed into an absorbent consisting of an aqueous...     

There is provided a chemically assisted mechanical refrigeration process including the steps of: mechanically compressing a refrigerant stream which includes vaporized refrigerant; contacting the refrigerant with a solvent in a mixer (11) at a pressure sufficient to promote substantial dissolving of...     

An absorption heat pump system comprises an absorber, a generator, a condenser, an evaporator, and a pump assembly for pumping liquid (absorbent with absorbed refrigerant) from the absorber to the generator. The pump is driven by fluid from the generator which is then passed to the absorber and which...     

A thermochemical heat pump for the transfer of calories between two calorie sources (1, 4) and (2, 5). The heat pump embodies a monovariant system for which the relationship between the logarithm of the pressure and 1/T is singular and quasi-linear. Application to heating.

This invention relates to a cooling and heating system which operates on the absorption and phase change heat exchange principle. More particularly it relates to a continuous heat actuated, air cooled, double effect generator cycle, absorption system. In further aspects, this invention relates to a system...     

The purpose of a thermal induction machine is to put thermal resources and thermal uses (Q.sub.o, Q.sub.1, Q'.sub.1, Q.sub.2) into relation, so as to valorize the energy of the resources, the device operating in very similar fashion to reversibility with a binary working fluid used in diphasic form....     

Heat is transferred between conduit sections so as to use heat which otherwise would not be utilized and improve the efficiency of the apparatus and method. The sections contain working fluids flowing in opposite directions. Heat transfer longitudinally of the conduit sections is reduced relative to...     

This invention relates to a cooling and heating system which operates on the absorption and phase change heat exchange principle. More particularly it relates to a continuous heat actuated, air cooled, double effect generator cycle, absorption system. In further aspects, this invention relates to a system...     

The invention provides a method and apparatus for quantity controlled, continuous liquid exchange in distillation and absorption refrigerant circuits. In the method on the one hand the pressure of a volumetric liquid flow, to be supplied to the high pressure zone at a defined rate, of enriched starting...     

An absorbent solution for absorbing and desorbing useful quantities of ammonia vapor is disclosed. The absorbent has much lower vapor pressure than water, and has a wider solubility field and higher crystallization limit than any previously known non-volatile absorbent for ammonia. It is useful in absorption...     

An energy recovery pump-motor including an energy recovery pump and a mixed-phase motor for replacing conventional valves in fluid circuits such as an absorption refrigeration system. The energy recovery pump pressurizes a first liquid by recovering flow work energy from a second liquid. The mixed-phase...     

This invention relates to an absorption type heat exchanging apparatus having an evaporation unit, an absorption unit, a condensation unit and a regeneration unit. A diluted absorption liquid transfer pipe and a concentrated absorption liquid transfer pipe are installed between the absorption and regeneration...     

A seven-effect absorption refrigeration cycle is disclosed utilizing three absorption circuits. In addition, a heat exchanger is used for heating the generator of the low absorption circuit with heat rejected from the condenser and absorber of the medium absorption circuit. A heat exchanger is also provided...     

Gas powered refrigeration units typically utilize a pressure reducing valve after the primary generator to reduce the pressure prior to the secondary generator in the case of a double effect system or prior to the absorber in a single system. In this invention, a fluid powered pump takes the place of...     

A leveling device is disclosed herein for automatically maintaining an absorption refrigerator and freezing unit in a level orientation which includes a ball and socket joint for pivotally mounting the unit to a fixed wall for movement about a horizontal axis. Ducts passing through the ball and socket...     

In refrigeration systems wherein the refrigerant compressor is driven by a prime mover powered by combustion of a fluid fuel, a notable saving in fuel consumption is achieved by utilizing waste heat in the hot exhaust gases from the prime mover in an ammonia absorption refrigeration unit to produce refrigeration...     

A thermochemical heat pump for the transfer of calories between two calorie sources (1, 4) and (2, 5). The heat pump embodies a monovariant system for which the relationship between the logarithm of the pressure and 1/T is singular and quasi-linear. Application to heating.

An adsorption refrigeration system comprising adsorption columns housing a solid adsorbent and heat transfer tubes and sealed with a refrigerant, an evaporator, a condenser, and pipe lines connecting them together so that the refrigerant may be circulated, the pipe lines being equipped with valves, preferably,...     

An absorber/solution pump for pumping strong concentration liquor up a pressure gradient to a vapor generator in a heat-pump system, said pump comprising a pump body defining a first vertically disposed cylinder and housing a first piston which reciprocates within said cylinder, dividing it into an upper...     

An energy recovery pump-motor including an energy recovery pump and a mixed-phase motor for replacing conventional valves in fluid circuits such as an absorption refrigeration system. The energy recovery pump pressurizes a first liquid by recovering flow work energy from a second liquid. The mixed-phase...     

Multi-effect regenerative absorption cycles which provide a high coefficient of performance (COP) at relatively high input temperatures. An absorber-coupled double-effect regenerative cycle (ADR cycle) (10) is provided having a single-effect absorption cycle (SEA cycle) (11) as a topping subcycle and...     

An absorption refrigerating unit for refrigerating plural refrigerating compartments. A single pathway of coolant includes a coolant vapor generator, a vapor condenser at the top of the unit, a first partial evaporator for partially evaporating the liquid coolant by absorption of heat, a second partial...