Device for realisation of adsorption cycle for increasing temperature potential of heat source

FIELD: power industry.

SUBSTANCE: device for implementing the adsorption cycle of increasing the temperature potential of a renewable heat source includes an adsorber, a heat exchanger in contact with the adsorbent granules, a vacuum tap, a container with liquid refrigerant and a heat exchanger partially immersed in the liquid refrigerant. The container with liquid refrigerant and the heat exchanger is a condenser and an evaporator. As the adsorbent, a composite adsorbent of methanol vapour is used, which is a porous matrix selected from the group consisting of silica gel, alumina, vermiculite, the pores of which contain a metal halide or nitrate from the range of: calcium, magnesium, lithium, nickel or cobalt in an amount of at least 17 wt %, Alcohols are used as the refrigerant-adsorbent.

EFFECT: increasing the temperature potential of a renewable heat source in a closed adsorption cycle.

4 cl, 1 tbl, 1 dwg

 



 

Same patents:

FIELD: engines and pumps.

SUBSTANCE: invention relates to thermal pump. Thermal pump comprises multiple hollow elements provided with adsorbent. Said hollow elements house working fluid displacing between adsorbent and phase transition area. Hollow elements force the flow of heat transfer fluid in fluid circuit (101) by valve device over said hollow elements for them to be brought in thermal contact with fluid. Flow over hollow elements is alternated in cycles. At least two hollow elements, in every position of said valve, are flown over by fluid in parallel and at least two hollow elements are flown over successively. In every position of said valve, at least two sets of multiple hollow elements are flown over in parallel. At least one set of multiple hollow elements is arranged directly upstream or downstream of heat exchange (105, 106). The number of hollow elements flown over simultaneously in parallel makes at least one fourth, preferably, one third of the quantity of hollow elements flown over successively.

EFFECT: expanded applications.

18 cl, 17 dwg

FIELD: heating.

SUBSTANCE: method for conversion of heat energy to electricity, heat of increased potential and cold involves the following stages. A cooling agent is evaporated from a strong solution. A heated vapour flow is expanded with the performance of work and formation of spent vapour. Vapour is condensed. A liquid cooling agent is expanded and evaporated so that the cooling effect is formed. The cooling agent vapour of reduced temperature is absorbed. Pressure of the solution is increased and the solution is heated before evaporation. The heated cooling agent vapour is separated into two flows after evaporation, one of which expands with the performance of work, and the other one is condensed and used for generation of cold and/or heat energy. The cooling agent vapour flow, after its expansion with the performance of work, and the flow of the cooling agent vapour of reduced temperature and reduced pressure, which is obtained at evaporation of the cooling agent with the formation of the cooling effect, are absorbed using a common weak solution and with the formation of a strong solution including the cooling agent of both flows that are specified above. A device for conversion of heat energy to electricity, heat of increased potential and cold is described.

EFFECT: group of inventions is aimed at improvement of efficient generation of mechanical energy, heat and cold.

13 cl, 3 dwg, 1 tbl

FIELD: heating.

SUBSTANCE: present invention pertains to the power engineering industry. To extract heat from a cold medium and transmit it to a hot medium, heat of dissolution is used as well as separation from the solution, two or more substances or two or more groups of soluble or absorbable substances with different thermodynamic properties on their saturation lines or beyond these lines. For this purpose, in the cold part of the cycle, through a selective membrane or membrane, a solvent is moved from one solution to the other such that, one of the substances or one of the groups of substances separates from the solution or is absorbed, with heat release or heat absorption or no thermal effect. The second substance or group of substances is dissolved or separated by an absorber, with absorption of a large amount of heat. As a result, in the cold part of the cycle, heat is taken off the cooled medium. The obtained solution and separated substance or substances are channelled to the hot part of the cycle, heating them with oncoming heat exchanger. In the hot part of the cycle, there is oppositely directed movement of solvent through the selective membrane or membrane. As a result, a reverse thermal effect is achieved and heat is transferred to the hot medium. The obtained solution and separated substance are returned to the cold part of the cycle, cooling them with oncoming heat exchanger. Use of the invention increases efficiency of a refrigerator or heat pump.

EFFECT: increased efficiency of a refrigerator or heat pump.

9 dwg

FIELD: refrigeration industry; heat-and-power engineering; other industries; production of the absorption- membrane installations.

SUBSTANCE: the invention presents the absorption- membrane installation, which ensures production of cold and heat energy working as the thermal pump by extraction from the strong solution of the refrigerant through the semi-permeable membrane under the pressure exceeding the osmotic pressure formed by the pump, the boiling of the refrigerant heated from the external source of the low-potential power at the low pressure with production of the refrigerating effect and absorption of the formed vapors by the weak solution of the refrigerant with production of the heat energy of the condensation and dissolution. The pressure under the membrane is maintained above the pressure of the refrigerant boiling at the environmental temperature. The expansion refrigerator is installed streamwise the refrigerant weak solution and behind the membrane block with usage of the mechanical power of the expansion refrigerator onto the drive of the pump and (or) on the drive of the booster-compressor compressing the vapors of the refrigerant till their mixing with the refrigerant weak solution and absorption. The invention usage will allow to expand the capabilities of the installation.

EFFECT: the invention ensures expansion of the capabilities of the installation.

5 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to thermal pump. Thermal pump comprises multiple hollow elements provided with adsorbent. Said hollow elements house working fluid displacing between adsorbent and phase transition area. Hollow elements force the flow of heat transfer fluid in fluid circuit (101) by valve device over said hollow elements for them to be brought in thermal contact with fluid. Flow over hollow elements is alternated in cycles. At least two hollow elements, in every position of said valve, are flown over by fluid in parallel and at least two hollow elements are flown over successively. In every position of said valve, at least two sets of multiple hollow elements are flown over in parallel. At least one set of multiple hollow elements is arranged directly upstream or downstream of heat exchange (105, 106). The number of hollow elements flown over simultaneously in parallel makes at least one fourth, preferably, one third of the quantity of hollow elements flown over successively.

EFFECT: expanded applications.

18 cl, 17 dwg

FIELD: heating.

SUBSTANCE: thermal chemical reactor for cooling and/or heating device includes a reactant unit, has the capability of absorbing the gas by means of chemical reaction, which comes from gas reservoir, and desorbing that gas by means of counter chemical reaction under action of heating so that gas can return to gas reservoir. Reactant unit is located in the container connected to gas reservoir by means of a connection tube and having the walls of which at least some have diffusion devices provided with possibility of passing the gas in one or the other direction between reactant unit and gas reservoir. Reactant unit is provided with possibility of increasing its dimension during gas absorption and decreasing it during gas desorption and is connected to heating device. Some of the above walls are movable and have the shape of plates provided with possibility of following longitudinal movements of reactant unit when its dimension is being changed inside container which is made in the form of a tube, each edge of which is equipped with a covering device, at least one of which is made in the form of semi-sphere. Diametre of the above tube ensures the possibility of introducing the reactant unit to the container without a gap. Reactant unit is made in the form of cylinder and arranged between two plates which can slide in longitudinal direction so that subsequent deformations of reactant unit are provided at increase of its dimension and original form is recovered at decrease of its size.

EFFECT: increasing reactant volume and providing use of reactant without any risk of its being damaged due to explosion.

11 cl, 5 dwg

FIELD: cooling equipment, particularly intermittent solar sorption refrigerators used for food product cooling and freezing, as well as for ice generation in hot climate zones.

SUBSTANCE: sun power refrigerator comprises combined-type generator-absorber with reactors, air condenser, receiver located outside insulated cooling loop, cooling chamber with U-shaped evaporator and tank filled with ice. Horizontal reducers arranged at different levels with respect to ground surface have two inputs-outputs communicated with cold conductors. One cold-conductive collector-condenser is non-insulated and has additional receiver. Evaporator is connected with receivers through thermoregulating valves and has bypassing pipe communicated with vapor receiver space through thermoregulating valve. Heat pipes are arranged in generator-absorber reactors so that the heat pipes are installed in central parts of reactors provided with opposite developed heat-exchanging surface made as ribbed channels located outside of generator-absorber.

EFFECT: increased cooling performance.

2 cl, 3 dwg

FIELD: product cooling method and devices, particularly for natural gas liquefaction.

SUBSTANCE: cooling method involves performing N ordered adsorption/desorption cycles in vacuum, wherein N is integer exceeding 1. Each cycle involves the following stages: removing heat from vaporous coolant inside condenser at the first pressure for coolant condensation; introducing liquefied coolant under the second pressure, which is less than the first pressure to evaporate coolant portion and cooling another coolant portion up to coolant evaporation temperature; supplying heat to liquid coolant portion inside evaporator for coolant evaporation; adsorbing coolant in vapor phase in adsorption/desorption chamber connected to evaporator and comprising ceolite adsorbent; regenerating ceolite adsorbent by heating thereof to extract vaporous coolant, returning vaporous coolant to condenser; providing N-1 heat-exchanging steps between coolant in evaporator of one cycle and coolant in condenser of next cycle to supply heat to evaporator and to remove heat from condenser; cooling product by performing heat-exchanging between the product and coolant in evaporator of the last cycle.

EFFECT: provision of necessary temperature obtaining, decreased device weight, power inputs for cooling, as well as increased safety and reliability.

35 cl, 12 dwg

FIELD: refrigeration engineering.

SUBSTANCE: self-cooled container comprises first space that receive drink to be cooled, second space that defines heat exchanger and receives liquid coolant and its vapors, and third space that receives the device for pumping by means of absorbing the vapors and device that connects the second space with the third space. The second and third spaces have common wall provided with means for communication. The means has check valve that is closed when the pressure rises in the second space and is open when the pressure rises in the third space.

EFFECT: simplified assembling.

15 cl, 11 dwg

FIELD: sorption engineering and sorbents.

SUBSTANCE: invention is intended for use in adsorption-type cooling machines and thermal pumps. Methanol vapor sorbent according to invention contains, as porous matrix, inorganic oxides, porous coals, naturally occurring sorbents or their mixtures, and an active substance placed in matrix pores and capable of providing reversible methanol vapor adsorption-desorption processes, which substance is selected from series: halide and nitrates of alkali, alkali-earth, and iron subgroup metals. A method of producing cold by means of adsorption-cooling apparatus is described, wherein methanol vapors are used as adsorbed substance and, as sorbent, above defined sorbent.

EFFECT: increased sorption capacity of methanol vapor sorbent.

2 cl, 10 ex

FIELD: refrigerating engineering; solar power refrigerating plants of cyclic operation.

SUBSTANCE: proposed reactor of generator-absorber of solar power refrigerating plant has perforated tube shifted upward relative to axis of housing till contact with inner surface and connected to coolant line. Available on upper side of perforated tube are bow-shaped slotted parallel holes made in form of slotted arches equidistant relative to one another and having length of ¼ diameter. Ammoniate salt capsules located inside reactor housing are reinforced inside with metal screen made in form of spiral spring; they are located in several rows and tiers. Capsules are closed at sides with metal end walls provided with locks and laid in housing at spaced relation with no fasteners in between them. According to another version, capsules are reinforced with metal plate-type walls. Movable screw-shaped parts made from memorized-shape effect alloy may be placed in capsules between plate-type screens.

EFFECT: increased cooling effect of plant.

3 cl, 5 dwg

The invention relates to refrigeration, and particularly to devices of solar sorption refrigeration machines periodic operation for cooling storage facilities, air conditioning facilities and the obtaining of ice in areas with a hot climate

FIELD: transport.

SUBSTANCE: collector with heat-transfer medium bears against outer surface of heated pipeline. Geothermal heat pump is used as heat source for heat-transfer medium. The heat pump contains connecting pipelines, throttles, steam generator, evaporator, three ejectors connected in series, three condensers where the third condenser has heating pipe, three circulating pumps, heat accumulator with collector. Each ejector consists of inlet chamber, nozzle and diffusor. Heat accumulator collector is connected with steam generator via the first circulating pump. Steam from generator is supplied through throttles to nozzles of the first, the second and the third ejectors. Inlet chamber of the first ejector is connected with evaporator outlet via connecting pipeline. The inlet chamber of the second ejector is connected with diffuser of the first ejector via the second circulating pump. The inlet chamber of the third ejector is connected with diffuser of the second ejector via the third circulating pump and the second condenser. Outlets of condensers are connected with evaporator inlet. Ejector exiting steam enters the third condenser and heats heating pipe connected with collector on heating pipeline.

EFFECT: higher pumping efficiency.

1 dwg

Transport pipeline // 2553527

FIELD: transport.

SUBSTANCE: pipeline comprises sections, shutoff valves and accessories, outer insulation ply and heater connected to heat carrier source Said heater is composed of at least two hearing sections, each being made up of snake-curved pies with heat carrier fluid. Heat source for said heat carrier represents a geothermal heat pipe and heat accumulators located in depth of non-freezing soil ply. Heat pump consists of interconnected compressor, evaporator and throttle. Heat accumulator comprises housing with insulation filled with solid heat-accumulating compound and provided with feed and discharge tubular coils filled with heat carrier. Discharge coil is connected by its ends via valves with appropriate inlet and outlet of heating sections while feed coil is connected by one end with said throttle and by another end with heat pump compressor.

EFFECT: higher reliability and efficiency.

1 dwg

FIELD: mining.

SUBSTANCE: as per proposed method, a pressure brine-carrying formation is developed by means of a well; high-mineralised geothermal brine is removed from it along a production casing string. After that, along an annular space between production and intermediate casing strings, which is interconnected via the wellhead with ground reservoirs and delivery equipment, as well as with an absorption zone formed before development of the brine-carrying formation at the interval of a geological cross-section of the well below the unit of a regional water-tight stratum. Brine is removed during opening, development and further operation of the formation to the absorption zone and the ground reservoirs with a possibility of using a hydraulic mineral potential of the brine from the reservoirs. Protection of the production string against deposition of hard formations on its walls from the produced brine during its movement from the formation to the well mouth is performed by temperature control of the upper part of the string at the interval of probable temperature phase transition due to continuous or periodic pumping along the brine flow in the string with a possibility of heat transfer to it of a heat carrier with initial temperature exceeding expected brine temperatures without any temperature control at the interval of probable temperature phase transition. According to the invention, heat carrier pumping is performed inside the brine lifted along the production string by arranging in the same string of a closed circulation circuit with the heat carrier in the form of service water. This circuit is made in the form of a coaxial heat exchanger drawn in the string to the depth that is not less than the value of phase transition interval. It consists of a heat-conducting vertical cylindrical housing coaxial to the string, closed in the base and provided from above with holes for water supply to the housing. Inside the housing there is a central pipeline with an open lower end that does not touch the base and an upper end opened for water discharge above the well mouth. With that, water is pumped first via an annular space of the heat exchanger, which is formed with the housing and the pipeline, in the direction opposite to the direction of brine lifting via the production string; then, it is supplied via the central pipeline to the heat exchanger outlet. Use of hydraulic mineral potential of the brine is performed with discharge of a less concentrated fluid formed at use together with discharged excess brine from the formation and reservoirs to the absorption zone. Before the fluid is supplied to a common discharge line, it is filtered from mechanical impurities.

EFFECT: enhanced method's efficiency.

5 cl, 3 dwg

FIELD: power industry.

SUBSTANCE: invention relates to methods for energy accumulation in cogeneration systems operating in a trigeneration cycle, in systems for removal of geothermal energy by an absorption heat pump, in systems using low-potential heat energy by means of the absorption heat pump. According to the method, excessively generated electric energy is converted to thermal energy and used with excessively generated thermal energy for chemothermal energy accumulation in the absorption heat pump. In order to obtain the heat, liquid cooling agent accumulated in the condenser is supplied to an absorber.

EFFECT: possible accumulation both of thermal and electrical energy at daily manoeuvring of the energy supplied to a user.

1 dwg

Geothermal device // 2529850

FIELD: power industry.

SUBSTANCE: geothermal device includes a heat exchanger connected to a heat pump, a subsurface heat exchanger installed in a geothermal well, pipelines attaching the heat exchangers so that a closed system is formed, which is filled with a working medium in the form of liquid; with that, the subsurface heat exchanger includes downtake and rising pipes interconnected with each other in the lower zone. Free space of the geothermal well is filled with a filler with high draining ability; the subsurface heat exchanger contains at least six rising pipes located from the downtake pipe at the distance that is not shorter than their diameter; with that, the pipes of the subsurface heat exchanger are interconnected with each other by means of a head piece. The downtake pipe has the possibility of the uniform supply to its outer surface of draining liquid and the filler of the geothermal well with the possibility of its moistening. The geothermal well filler moistening system includes a storage chamber located below the head piece.

EFFECT: improving the thermal capacity of a subsurface heat exchanger and enlarging its scope of application.

3 cl, 3 dwg

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