Abstract: The invention refers to an arrangement at a refrigerator cabinet (10) having an absorption refrigerating apparatus (16,18) operated by a heating cartridge (40) from at least one electric current source or by a gas burner (38). The arrangement shows a control apparatus (74) which automatically starts the gas burner (38) when the supply of current to the heating cartridge (40) ceases. The refrigerating apparatus (18) is with exception of its evaporator (16) enclosed in a heat insulated chamber (20) through which surrounding air circulates for cooling of the refrigerating apparatus (18).

Abstract: A hermetically closed circulation type, vapor absorption refrigerator which comprises a high temperature regenerator, a low temperature regenerator a condenser, an evaporator, an absorber and heat exchangers in a hermetically closed circulation system as essential constituent members composed of iron-based materials, where refrigeration is produced by repetitions of concentration of an absorbing solution sealed into the circulation system, dilution with a cooling medium and heat exchange, the inside wall of the high temperature regenerator being provided with a composite film of molybdenum oxides and iron oxide can be operated stably with a high reliability or corrosion resistance.

Abstract: The present invention is an improvement to a liquefaction process for natural gas, wherein refrigeration for the liquefaction process is provided by two closed-loop refrigeration cycles. The first or low level refrigeration cycle uses either a mixed refrigerant or a single component refrigerant as the heat pump fluid, and the second or high level refrigerant uses a mixed (multicomponent) refrigerant as the heat pump fluid. In the liquefaction process the second or high level refrigeration cycle cools the low level heat pump fluid. The low level refrigeration cycle cools and liquefies the cooled natural gas feed. The improvement to the process is the use of an absorption refrigeration cycle to precool the natural gas feed, the low level heat pump fluid, the high level heat pump fluid and, if required, the deep flash recycle. Heat to drive the absorption refrigeration cycle is provided by the exhaust gas from one or more drives for the compressors in the process.

Abstract: 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 motor recovers flow work energy and expansion energy from a high pressure, saturated third liquid and transfers the energy along a shaft to the pump to aid in pressurizing the first liquid. The energy recovery pump is shown in a single effect absorption refrigeration system, while the pump-motor is shown in both single effect and double effect systems.

Abstract: In an absorption system hot and cold water supply apparatus for simultaneously supplying hot water and cold water, there is provided a refrigerant blow device for blowing a refrigerant into a refrigerant circulation path, thermo-capacity control device for carring out heating control of a generator by a cold water temperature or a hot water temperature or a combination control of the heating control and a control of a refrigerant flow rate from the generator to and condenser, and control device for controlling the operation of the refrigerant blow device by a cold water exit temperature of an evaporator.

Abstract: 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 pumping chamber and a lower working chamber, a header tank for the system strong concentration solution integral with said pump body and surmounting said pumping chamber, said header tank and said pump body being interconnected via a one-way valve which allows the strong-concentration solution to be drawn by suction and gravity into the pumping chamber, a second piston within a second cylinder which is connected to the first piston so as to reciprocate with it, said second cylinder opening at the bottom into the pumping chamber and opening at the top into the base of the header tank, and a third piston acting vertically in a third cylinder which is closed at the bottom from the atmosphere but is selectively c

Abstract: The refrigeration system of the invention comprises a vapor generator member connected to a condenser which is itself connected, by way of a pressure reduction valve, to an evaporator connected to an absorber which receives the liquid present in the lower zone of the generator and from which liquid is fed to the upper zone of the generator, there being provided in the generator a heat exchanger through which the engine cooling liquid flows, the generator member and absorber member containing a refrigerant fluid and an absorbent fluid, the absorbent fluid being able to absorb or dissolve the refrigerant fluid, which can itself be distilled or separated from the absorbent fluid by the addition of heat which is supplied to the generator by the heat exchanger present in it, and be condensed and vaporized under the temperature and pressure conditions prevailing in the condenser and evaporator respectively.

Abstract: 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, butterfly valves, capable of opening or closing by means of internal pressure difference between the evaporator side and condenser side and driving force of eccentric valve shafts. The system is operated by alternatively changing over adsorption and desorption stages between the one adsorption column(s) and the other column(s) so that both columns may be at mutually reverse stages; shortly before change-over, transferring whole amount of heat remained in the one column(s) immediately before shifting from desorption to adsorption stage to the other column(s) immediately before shifting from adsorption to desorption stage where the preheat the adsorbent and then reversing the stages.

Abstract: A cooling process and apparatus which utilizes the lower water vapor pressure above a fluid such as water-salt solutions of, for example, calcium chloride, lithium chloride, lithium bromide or mixtures thereof. Heat is then removed from the fluid by indirect contact with a circulating water stream in a heat exchanger. Water which has taken up heat from the fluid is expanded at reduced pressure to release water vapor and lower the temperature of the water. The water vapor is then absorbed in a salt solution having a higher temperature but a lower water vapor pressure than that of the released water vapor. The remaining water is recirculated to the heat exchanger.

Abstract: 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 in the form of liquid ammonia. Subcooled liquid ammonia is used to subcool the compressed and condensed refrigerant prior to its expansion and evaporation to produce saleable refrigeration. This compound refrigeration system is economically attractive for producing large tonnage refrigeration particularly when a combustion turbine coupled to a centrifugal compressor is used.

Abstract: 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.

Abstract: In an air-cooled absorption type cooling/heating water generating apparatus using a refrigerant and an absorbent solution and including a high-temperature regenerator, a separator, a low-temperature regenerator, an air-cooled condenser, an evaporator, an air-cooled absorber, a high-temperature solution heat exchanger, a low-temperature solution heat exchanger, a solution circulating pump and a refrigerant circulating pump, a constant flow rate control valve is disposed in a conduit connected between the high-temperature solution heat exchanger and the low-temperature regenerator so as to control the flow rate of the solution flowing through the conduit, and a pressure regulating valve is disposed in a conduit connected between the low-temperature regenerator and the condenser so as to regulate the internal pressure of the separator.

Abstract: 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 joint interconnect freezer unit with absorption unit. A solenoid operated leveling device automatically positions the unit to a level position in response to solenoid push rods. A mercury liquid cell carried on the refrigerator unit having quadrant segments operably connects with the solenoids for selectively actuating the push rods when the liquid level changes. The ball and socket joint permits the freezer and absorption unit to automatically level itself by the gravitational pull of the earth assisted by a solenoid operated leveling device that helps position the freezer and absorption unit to a level position.

Abstract: A high efficiency open-cycle absorptive approach to compressing steam or other vapor is disclosed, especially useful for industrial evaportion via recompression. Referring to FIG. 1, low pressure steam from evaporator 1 is absorbed in an aqueous absorbent solution so as to release heat in both absorber 7 and GAX exchanger 8. External heat is applied to generator 12. Steam at higher pressure is desorbed from both gnerator 12 and GAX exchanger 8, and used to heat evaporator 1. Absorber 7 heat is also used to heat and evaporate the mixture undergoing evaporation.

Abstract: 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 the pressure reducing valve and pressurizes the refrigeration fluid from the output of the absorber from the input to the primary generator. The utilization of this motor enables a much reduced use of the main motor in the system and allows substantial reduction in the amount of energy required for operation in the system.

Abstract: A double effect air cooled absorption refrigerating machine consisting of fans provided on one side frame member out of the upper, lower and four side frame members which constitute a frame of a machine body, an air cooled heat exchanger provided on the remaining three side frame members and composed of an air cooled absorber and an air cooled condenser, and an evaporator, a high-temperature regenerator, a low-temperature regenerator, a solution heat exchanger and some other parts, all of which are provided on the inner side so as to be surrounded by the side frame members, the machine having a small installation area.

Abstract: 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 for heating the generator of the medium absorption circuit with heat rejected from the condenser and absorber of the high absorption circuit. If desired, another heat exchanger can also be provided for heating the evaporator of the high absorption circuit with rejected heat from either the condenser or absorber of the low absorption circuit.

Abstract: The purpose of this invention is to cost effectively achieve more fuel efficient cooling and heating of buildings and also provide society with the resource conservation and environmental benefits that can result from the more efficient use of our fuel resources. The invention uses conventional equipment and includes an internal combustion engine and components that are now used in electric driven compression and steam driven absorption air conditioning and heat pump systems. The work from the engine provides a direct mechanical drive for the compression cycle and most of the rejected heat from the engine is recovered and utilized by the absorption cycle, which is achieved by recovering the high and medium temperature heat in the absorption cycle generator and recovering the low temperature heat from the engine exhaust by the mixture flow stream from the absorber to the generator.

Abstract: 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 units. A pump placed in one of these pipes is connected to a power take-off device which is placed in the other pipe and which is adapted to have rotative driving power imparted thereto by the absorption liquid in the pipe. Rotative driving power is imparted to the power take-off device by the energy based on the difference between the pressures in the regeneration and absorption units. This rotative driving power is transmitted to the pump. Thereby, the power to be provided to the pump from the outside is reduced.

Abstract: 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 motor recovers flow work energy and expansion energy from a high pressure, saturated third liquid and transfers the energy along a shaft to the pump to aid in pressurizing the first liquid. The energy recovery pump is shown in a single effect absorption refrigeration system, while the pump-motor is shown in both single effect and double effect systems.

Abstract: Disclosed is an air-cooled absorption-type water cooling and heating apparatus, wherein, during a heating operation, the absorption heat generated when a condensed solution absorbs refrigerant vapor is imparted to circulated cold or hot water flowing through a first cold/hot water heat exchanger so as to convert the water into hot water, and condensation heat necessary for condensation of refrigerant vapor by a water heating device is supplied to circulated cold or hot water flowing through a second cold/hot water heat exchanger so as to convert said water into hot water for heating. At this time, since the refrigerant solution evaporates on an inner wall surface of a cylinder by absorbing the heat of the air, the heat obtained from the air is added to the heat obtained from the high-temperature regenerator, with the result that a heat pump effect can be obtained.

Abstract: 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 cycle processes and apparatus requiring high lifts from temperatures well below freezing, e.g., in thermally actuated industrial refrigeration systems or cold-climate absorption heat pumps for space heating. The new absorbent is also useful with other ammonia-type vapor, e.g., monomethylamine.

Abstract: Method and apparatus for drying paper webs continuously manufactured in paper machines, by the use of process steam produced by a two-substance compression heat pump with a solution-circuit.A portion of the thermal energy needed for the drying process is obtained from process steam produced by the heat pump from the waste heat contained in the moist exhaust air of the paper machine, and another portion from preheated ambient air, which is then used for drying the paper web. The ambient air is preheated by using it to cool the rich solution of the heat pump.

Abstract: 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 solution is raised from a low level to a high pressure level, while on the other hand the mutually separated liquid flows (which in sum are equal in amount) to be removed from the high pressure zone, of the product condensate and of the depleted solution, are transferred from a high pressure level to a low pressure level. In a solution exchange apparatus the method utilizes mechanical energy of the liquid flows (which are to be depressurized and to be removed from the apparatus) and only requires a small external boosting device to overcome internal frictional and intercomponent leakage.

Abstract: A plant having a process portion is described, which is supplied with primary operating energy via a heat supply portion. The heat supply portion simultaneously serves to utilize the waste heat released by the process. The heat supply portion includes a combination of a heat transformer and a heat pump, furnishes the input heat energy required by the process portion to the process portion, accepts the output heat energy from the process portion, and in turn releases waste heat at a temperature range that is lower than the output heat temperature range of the process portion. By means of this combination, unusually high energy savings can be achieved.

Abstract: A heat exchange device which is employed for separating components of different volatility from a solution containing the components and which has particular application as a heat exchanger/rectifier/generator in an absorption cycle refrigeration system. The device comprises a plurality of heat conductive plates which are stacked as laminations in face-to-face heat conductive relationship and a chamber is formed in the plates, the chamber defining a zone into which fluid is directed and in which liquid and vapor phases of the fluid can separate. First, second, third and fourth fluid flow channel regions are formed within the plates.

Abstract: First path flow passage is formed so as to lead the absorbent solution in the heat exchanger (7; 107) or the receive pan (24; 118a) disposed below a first path absorption process into a cooling air upper stream side of the first path absorption process through a conduit (30). Subsequent path flow passage is formed so as to lead the absorbent solution in the receive pan (24; 120) disposed below a subsequent path absorption process into the cooling air upper stream side of same path absorption process. The absorbent solution flow amount of each vertical tubes group (10; 158) can be obtained larger irrespective of the absorbent solution circulation flow amount for the refrigeration cycle. The dry portions of the vertical tube (10; 158) caused due to the storage of the absorbent solution circulation flow amount can be prevented.

Abstract: 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 absorption refrigeration unit that chills a coolant stream circulated to the condenser for the compressed refrigerant. Existing combustion-powered refrigeration systems can be improved by adding a lithium halide absorption unit to utilize heat in the exhaust gases to produce refrigeration that is used to condense the compressed refrigerant. A combustion turbine coupled to a centrifugal compressor is a preferred combination of prime mover and refrigerant compressor for economically producing tonnage refrigeration.

Abstract: Refrigeration is produced by an intermittent absorption cycle. The cycle is driven by solar radiation, and utilizes NH.sub.3 as refrigerant and a liquid, preferably H.sub.2 O, as absorbent. Referring to FIG. 1, solar radiation is collected during the daytime or in generation mode by a Compound Parabolic Collector 2, which reflects the light onto a cylindrical target vessel 1 containing the absorption working pair. Ammonia is boiled out of the target, the vapor travels to condenser 5 where it is cooled to liquid, and the liquid is stored in receiver vessel 6. During the nighttime, or absorption mode, liquid is released from the receiver vessel into an evaporator coil 8 located in a cold box 9 wherein it vaporizes, thus removing heat from the contents of the cold box. The vaporized ammonia then is absorbed back into the absorbent, in the target vessel.

Abstract: 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 constructed for use with an absorption refrigeration solution pair consisting of a nonvolatile absorbent and a highly volatile refrigerant which is highly soluble in the absorbent. A disclosed refrigerant pair are ammonia as the refrigerant and sodium thiocyanate as the absorbent. An absorption cycle is disclosed using the thermo physical properties of sodium thiocyanate/ammonia, absorption/refrigerant pair.

Abstract: 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 constructed for use with an absorption refrigeration solution pair consisting of a nonvolatile absorbent and a highly volatile refrigerant which is highly soluble in the absorbent. A disclosed refrigerant pair are ammonia as the refrigerant and sodium thiocyanate as the absorbent. An absorption cycle is disclosed using the thermo physical properties of sodium thiocyanate/ammonia, absorption/refrigerant pair.

Abstract: The invention deals with a process for the energy-saving automatic control of the concentration of evaporating coolant mixtures, especially of water-containing ammonia solutions in evaporators of refrigerating machines and heat pumps based on the absorption principle, together with different embodiments for carrying out the process. The process makes possible the combined utilization of the vaporization potential of the solution outflow and the cooling potential of the cold vapor withdrawn for subcooling the condensate feed, while selecting the minimum temperature difference between the subcooled not-yet-depressurized condensate feed and the boiling coolant mixture in the evaporator as the control variable for process automatization. This temperature difference is independent of the saturation pressure of the boiling coolant mixture and can be maintained constant for every evaporator load point to obtain an energy-saving solution outflow.

Abstract: A triple effect absorption method and apparatus having a high coefficient of performance. Two single effect absorption circuits are combined with heat exchange occurring between a condenser and absorber of a high temperature circuit, and a generator of a low temperature circuit. The evaporators of both the high and low temperature circuits provide cooling to an external heat load.

Abstract: 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 heat transfer transversely of the conduit sections. In a preferred embodiment, the conduit sections extend at an acute angle to the direction of the principal gravity or other acceleration field; that is, at an acute angle to horizontal in a stationary system, or at an acute angle to the radial direction in a rotary system.

Abstract: 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 constructed for use with an absorption refrigeration solution pair consisting of a nonvolatile absorbent and a highly volatile refrigerant which is highly soluble in the absorbent. A disclosed refrigerant pair are ammonia as the refrigerant and sodium thiocyanate as the absorbent. An absorption cycle is disclosed using the thermo physical properties of sodium thiocyanate/ammonia, absorption/refrigerant pair.

Abstract: 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 constructed for use with an absorption refrigeration solution pair consisting of a nonvolatile absorbent and a highly volatile refrigerant which is highly soluble in the absorbent. A disclosed refrigerant pair are ammonia as the refrigerant and sodium thiocyanate as the absorbent. An absorption cycle is disclosed using the thermo physical properties of sodium thiocyanate/ammonia, absorption/refrigerant pair.

Abstract: 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. It includes a first direct assembly of heat transfer elements inserted serially on the liquid and working fluid vapor flows. The first assembly consists of a first diphasic contact column (Kd) operating at an initial pressure value. It also includes a second assembly of heat transfer elements. The second assembly is reverse to the first and containing the same number of elements and notably a second diphasic contact column (Kg), the second column working at a second pressure value lower than the first value, adventitious flows (m.sub.o, m'.sub.o, m.sub.1, m'.sub.1) being established between the two assemblies on the terminals of the homologous elements.

Abstract: The invention relates to a method of operating a heat pump system in an absorption heat pump mode and/or boiler heating mode. According to this method, a solution of a refrigerant in a solvent is heated in a boiler, the evaporated refrigerant is delivered either directly to an absorber through a condenser, a throttle and an evaporator when the system is operated in the heat pump mode, or directly to an absorber when the system is in the boiler heating mode. The refrigerant is combined with the solvent that is drawn, low in refrigerant, from the boiler. The rich solution thus obtained is redirected to the boiler. To shut down the system, the heating of the boiler is turned off.

Abstract: A compact apparatus for residential, commercial and industrial airconditioning involving balanced heat recovery ventilation, heating, humidification, dehumidification, cooling and air filtration comprises two treatment vessels, each containing a compact packed bed of a solid sorbent material, a heater and a solid heat exchanging material, a 4-way valve for switching the flows of the exhausted stale air and the incoming fresh air between the two treatment vessels to permit a cyclic countercurrent short cycle operation of the packed beds to achieve efficient transfer of heat and moisture between the two air streams. The two treatment vessels are complemented with a combustor, a direct evaporative cooler and a solid state process controler permitting operation of the apparatus to provide the required services during the winter-heating season, summer-cooling season and the rest of the year-ventilation season to maintain comfort in the air conditioned space.

Abstract: A method for the automatic control of absorption refrigeration plant or a heat pump, by control of the supply of refrigerant to the evaporator of the plant as dependent on the temperature and the pressure of the vapor issuing from the evaporator in such a way that there is a slight degree of overheating of the vapor. At the same time the boiler power is varied in accordance with the temperature of the refrigerant vapor emerging from the boiler. The cooling for the expelled refrigerant vapor is provided by the rich solution from an absorber in a dephlegmatizer having two stages and the solution cooling circuit includes an intermediate cooler for enhancing the rectifying process when marginal conditions are unfavorable.

Abstract: A process and apparatus for deriving useful heat from a low temperature waste heat-carrying fluid by means of a medium which can be divided into a strong solution in vapor form and a weak solution, the medium circulating in a closed circuit. Waste heat is used to divide the medium into the two solutions at low pressure, after which the strong solution is condensed, placed at increased pressure and then evaporated by receiving additional waste heat. The weak solution is placed at increased pressure and then mixed with the evaporated strong solution at increased pressure to absorb the latter and cause it to liberate heat. The resulting mixture is used to, successively, superheat the evaporated strong solution at increased pressure, heat the weak solution at increased pressure and heat the condensed strong solution at increased pressure, after which the pressure of the mixture is reduced to provide the medium which is divided into the two solutions.

Abstract: A method of operating an absorption heat pump or refrigerator consisting at least of a refrigerant circuit and a refrigerant-containing solution circuit, with a generator for evaporating refrigerant from the solution with the supply of relatively high-temperature heat, a condenser for condensing refrigerant and giving up heat at an intermediate temperature level, an evaporator for evaporating refrigerant with the absorption of heat from a relatively cold heat source, a heat exchanger for transferring heat from the liquid passing out of the condenser to the refrigerant vapor and liquid coming from the evaporator, an absorber for absorbing refrigerant vapor into the solution with the giving-up of heat at an intermediate temperature level, and means for circulating the solution or maintaining the pressure, wherein the delivery of refrigerant is regulated in such a manner that the temperature differential .DELTA.t.sub.

Abstract: 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 constructed for use with an absorption refrigeration solution pair consisting of a nonvolatile absorbent and a highly volatile refrigerant which is highly soluble in the absorbent. A disclosed refrigerant pair are ammonia as the refrigerant and sodium thiocyanate as the absorbent. An absorption cycle is disclosed using the thermo physical properties of sodium thiocyanate/ammonia, absorption/refrigerant pair.

Abstract: An air-cooled absorption type water cooling/heating apparatus has a cooling circulation system including an evaporator in which a liquid refrigerant is evaporated so as to cool a heat exchanger leading to a cooling heat radiator, and a heating circulation system including a heat exchanger leading to a heating heat radiator and disposed in a separator in which the solution which has been thinned as a result of absorption of the refrigerant is heated and fractionated into refrigerant vapor and thick solution. In the heating mode of operation, the circulation passages for the solution and refrigerant are closed. This arrangement enables a heat source, which is used for heating the refrigerant and the absorption solution in the cooling mode of operation, to be used also in the heating mode of operation, so that the construction of the apparatus as a whole is made compact.

Abstract: 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.

Abstract: 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 comprises the liquid (absorbent depleted of refrigerant) which is conventionally returned to the absorber and, under certain circumstances, vapor from the generator to balance the flow of liquid between the absorber and the generator. The driving chamber of the pump assembly is separated into two parts, the lower part is connected to the liquid space of the generator for receiving liquid therefrom via solenoid valve means, and the upper part is connectable either to the liquid space of the generator or to the vapor space of the generator via solenoid valve means, both chamber parts being exhausted to the absorber via solenoid means.

Abstract: 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 the refrigerant in the solvent in the mixer (11) to form a refrigerant-solvent solution while concurrently placing the solution in heat exchange relation with a working medium to transfer energy to the working medium, said refrigerant-solvent solution exhibiting a negative deviation from Raoult's Law; reducing the pressure over the refrigerant-solvent solution in an evaporator (10) to allow the refrigerant to vaporize and substantially separate from the solvent while concurrently placing he evolving refrigerant-solvent solution in heat exchange relation with a working medium to remove energy from the working medium to thereby form a refrigerant stream and a solvent stream; and passing the solvent and refrigerant s

Abstract: 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 lithium bromide solution in the absorber 7, so that a heat carrier fluid 8 is heated by the heat of absorption evolved within the absorber. In the regenerator 12, the diluted absorbent 9 received from the absorber 7 is heated with a heating fluid 13, whereby the absorbed water content of the absorbent 9 is evaporated. The concentrated absorbent 14 resulting from the step of regeneration is returned to the absorber 7, while the water vapor 16 evolved in the regenerator 12 is introduced into the condenser 17. The heat carrier fluid 8, which has been heated in the absorber 7, is passed through the condenser 17, being further heated by the heat of condensation within the condenser 17.

Abstract: An absorption refrigeration/heat pump system of the four chamber multiple subsystem type in which an absorption power module is employed having a desorber, condenser, and second desorber combined for more effective heat transfer and thermal efficiency.

Abstract: 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 having a boiler, a heat source for the boiler, a steam/liquid heat exchanger, a steam trap for the heat exchanger, a condensate tank with a vent line to atmosphere and work to be heated; methods of and apparatus for substantially improving a steam powered cooling system conventionally having a boiler, a heat source for said boiler an absorption machine having a generator section and an absorption section, a steam trap for the generator section of the absorption machine, a condensate tank with a vent line to atmosphere and work to be heated; methods of and apparatus for markedly increasing energy efficiency and efficient functional capacity in the heating and/or cooling systems in question.