Method of increasing thermal potential of heat source

FIELD: energy.

SUBSTANCE: invention is aimed at energy saving by rational use of renewable sources of heat and natural temperature drop in environment. Disclosed is a method of producing heat energy in a closed adsorptive cycle enhancement of temperature potential, consisting of consecutive steps of adsorption of cooling agent on adsorber, removal of cooling agent with adsorbent (regeneration), evaporation and condensation of cooling agent, adsorbent regeneration is performed by heating from renewable source of low-potential heat, and condenser is cooled to low temperature by using only natural temperature drop in environment.

EFFECT: invention increases temperature potential of heat source only due to use of natural temperature difference in environment.

3 cl, 2 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: 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

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: 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: 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: 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

Up!