281 results about "Adsorption refrigeration" patented technology

The invention relates to micro distributed solar-driven combined cooling heating and power system belonging to field of energy technology. The invention includes: solar collection system, organic Rankine cycle thermal power generation system, adsorption refrigeration system, heating and hot water system, hot water distribution system, control system, secondary combustion device. The solar collection system is connected to the pipe of the hot water distribution and control system via the secondary combustion device, and the organic Rankine cycle thermal power generation system and the adsorption refrigeration system and the heating and hot water system are parallel connected to downstream of the hot water distribution and control system via pipes. The invention provides hot water by employing the vacuum tube solar water heater, and provides electricity by using ORC generation system, and provides cold water used by air conditioner and hot water by using the adsorption refrigeration system; the regulation and control on the hot water distribution system is user-oriented, and the system generates electricity, refrigerates, heats based on user requirement, and the system prepares the secondary combustion device to suffice the requirement when illumination is inadequate or user requirement is overlarge.

A mixed adsorbent for the absorption bed of air conditioner is prepared from calcium chloride and expanded graphite in the weight ratio of (60-80%):(20-40%) for the bulk one or (55.1-67.7%):(17.2-32.7%) for the solid one. Its advantages are high gas osmosis, high heat conductivity and high refrigerating efficiency.

The invention relates to a adsorption refrigerating circulating system, especially a novel circulating adsorption refrigerating system for heating or cooling medium is contacted directly with adsorbent in absorber and heat exchanging to the same utilizing heat energy driving. The adsorption refrigerating system is composed of the absorber, condenser, cooler, liquid storing separator, vapor-liquid separator, evaporator, heater and circulating pump etc. They are connected in series successively with pipeline.

The invention provides a carbon dioxide capturing and liquefying process stepwise utilizing smoke waste heat and belongs to the technical field of separation. The process is based on chemical absorption, absorption refrigeration and compression condensation; by stepwise utilizing the smoke waste heat, the smoke waste heat is used as a heat source for absorbent regeneration and then used as a heat source for absorption refrigeration, heat consumed during absorbent regeneration is utilized for the second time, and low-temperature heat carried by carbon dioxide at the top of a regeneration tower is used as a heat source for absorption refrigeration, so that cost of carbon dioxide capturing and liquefying is reduced effectively, recycling of carbon dioxide and implementing of carbon emission reduction are facilitated. The process has the advantages that steam consumption during absorbent regeneration is avoided, compression work consumption during liquefying is reduced, and 1.5 tons of steam 20kWh can be saved by each ton of carbon dioxide; by optimizing and designing the refrigerating and liquefying process, liquefying temperature of carbon dioxide is increased to higher than 5 DEG C, freeze blocking and hydrate forming are avoided, and the dewatering process is simplified.

The invention relates to a modified metal organic frame porous adsorption material in an adsorption refrigeration system. The modified metal organic frame porous adsorption material provided by the invention is prepared through steps that: metal ion nitrate and organic ligand are formulated according to a molar ratio of 1:1-10; the materials are dissolved in N,N-dialkylformamide, and the solutionis stirred for 10 to 60 minutes, with a reaction temperature controlled at 25 to 250 DEG C, and a reaction time of 24 to 72 hours; with a hydrothermal synthesis method, the metal organic frame porousadsorption material is obtained through complexation. The material has characteristics of large specific surface area, ordered pore structure heights, controllable pore dimensions, controllable pore surface functional groups, controllable pore surface potential energies and substantially improved adsorption capacity.

The present invention relates to an adsorption chiller using double-effect cycle utilizing middle driving heat source of 100-150 degree centigrade. The cycle consists of two cycles such as high temperature cycle (HTC) and low temperature cycle (LTC). Zeolite-water system and silica gel-water system are used as adsorbent-adsorbate pairs of HTC and LTC respectively. Waste heat of zeolite generated at during adsorption period of the zeolite is re-used for pre-heating and desorbing the silica gel.

The invention is a water generator device from air utilizing solar thermal energy and adsorption principle. The system is based on an adsorption refrigeration unit with Ether as a refrigerant and activated carbon as adsorbed. The required heat is generated from evacuated tube solar system and the heat sink is the atmosphere. The adsorption unit is an air-cooled refrigeration unit that can operate at relatively low hot water temperature (60-70° C.) and relatively high atmospheric temperature (30-40° C.). The water condensed from air is than driven through a simple water purification unit to assure its quality as drinking water. The very small electricity needed to operate the hot water and cold water pumps along with the filtration unit and the controller of the adsorption unit is generated from a small Photo Voltaic (PV) unit for stand alone systems.

An adsorption structure is described that includes at least one adsorbent member formed of an adsorbent material and at least one porous member provided in contact with a portion of the adsorbent member to allow gas to enter and exit the portion of the adsorbent member. Such adsorption structure is usefully employed in adsorbent-based refrigeration systems. A method also is described for producing an adsorbent material, in which a first polymeric material is provided having a first density and a second polymeric material is provided having a second density, in which the second polymeric material is in contact with the first polymeric material to form a structure. The structure is pyrolyzed to form a porous adsorbent material including a first region corresponding to the first polymeric material and a second region corresponding to the second polymeric material, in which at least one of the pore sizes and the pore distribution differs between the first region and the second region.

A high efficient and reliable adsorption refrigerator based on isolation heat pipe is used in refrigeration plant technical field. It includes left adsorption bed, left condenser and left isolator comprising left vacuum cavity, right adsorption bed, right condenser and right isolator comprising right vacuum cavity, evaporator, left isolator and right isolator forming heat pipe working cavity , the left and right vacuum cavities and heat pipe working cavity forming an integration by enclosure, cold water inlet and outlet linked to evaporator, acuum valve linking left and right vacuum cavities which has cooling agent in them, heat pipe working substance filled in heat pipe working cavity components linked to valve component include heat medium, left and right adsorption bed, inlet and outlet pipe of heat medium and inlet and outlet pipe of inlet and outlet pipe. The invention has simple structure, automatic operation effective use of low gradeheat energy and no pollution, it is a green energy-saving refrigeration component.

The metal organic framework adsorbent for solar adsorption refrigeration is a nanocomposite made from a metal organic framework matrix having carbon nanotubes incorporated therein. Preferably, the metal organic framework is composed of MIL-100(Fe), and the carbon nanotubes are functionalized with carboxyl (COOH) groups. In order to prepare the metal organic framework adsorbent, carbon nanotubes functionalized with carboxyl (COOH) groups are first added to an aqueous solution of a precursor salt, such as ferric trinitrate nonahydrate (Fe(NO₃)₃·9H₂O), to form a first mixture. The first mixture is then sonicated and a 1,3,5 benzenetricarboxylic acid ligand is added thereto to form a second mixture. The second mixture is then sonicated and heated, and the metal organic framework nanocomposite is separated therefrom, preferably as a powder.

The invention discloses an adsorption refrigeration device driven by a parabolic solar thermal collector and a heat pipe, which comprises a condensing circulation loop formed by connecting an adsorbent bed, a condenser, an ammoniacal liquor storage device and an evaporator sequentially, the parabolic solar thermal collector and the high-efficiency heat pipe. The parabolic solar thermal collector carries out heat transfer with the adsorbent bed through the high-efficiency heat pipe. The adsorption refrigeration device converts the solar radiation energy into latent heat of the working fluid by using the high-efficiency parabolic solar thermal collector and the high-efficiency heat and mass transfer heat pipe, heats an adsorbent from the inside of the adsorbent bed to make the adsorbent have better resolving effect; and simultaneously, fins are arranged in a condensing section of the heat pipe so as to strengthen the heat dissipating capacity of the heat pipe and greatly improve the heat transfer efficiency.

The invention is a quasi-separating hot-tube absorbing ice machine for ships. It adopts fume pipeline to directly heat, the intermediate cooler is welded with the second ammonia tank and connected with an absorbing bed through the ascending and descending segments of the hot tube, the electromagnetic valve is set on the descending segment, the condenser is welded with the first ammonia tank and connected with the absorbing bed, the single-way valve is connected with connecting pipe, the first ammonia tank is connected with ice piece machine, the ice piece machine is connected with the absorbing bed, mass recovery valve is set on the connecting pipe between the condenser and the absorbing bed and between the ice piece machine and the absorbing bed, cold sea water loop adopts a serial mode, the sea water valve and cold sea water pump are set on the cold sea water inlet pipeline, the cold sea water loop is firstly interconnected with the condenser and then with the intermediate cooler and the cold sea water outlet. It adopts mixed adsorbent-ammonia working medium pair, the absorbing bed is cooled by using ammonia as cooling medium, thus able to avoid the corrosion problem and also simplify structure and enhance heat exchange effect.

A method, apparatus and system for cooling a component of a downhole tool is disclosed. The apparatus includes a first desiccant configured to adsorb a refrigerant gas. A transmitter is configured to transmit electromagnetic energy into the first desiccant to enable desorption of the refrigerant gas from the first desiccant. A condenser condenses the desorbed refrigerant gas into a liquid phase. The condensed refrigerant evaporates from a liquid phase to a gaseous phase to cool the component. A second desiccant can be used, wherein the processor is configured to operate the cooling system in a first mode of operation in which the first desiccant is in thermal communication with the component and the second desiccant is thermally isolated from the component and a second mode of operation in which the second desiccant is in thermal communication with the component and the first desiccant is thermally isolated from the component.

The invention relates to a heat-recovery-typed secondary thermal chemisorption refrigeration circulatory system based on pressure-switching desorption, and pertains to the technical field of refrigeration and air-conditioning, wherein, a main reactor outlet is connected with an intermediate control valve inlet, an intermediate control valve outlet is connected with an auxiliary reactor inlet, an auxiliary reactor outlet is connected with an auxiliary control valve inlet, an auxiliary control valve outlet is connected with a condenser inlet, a condenser outlet is connected with a throttle valve inlet, a throttle outlet is connected with an evaporator inlet, an evaporator outlet is connected with a main control valve inlet, and a main control valve outlet is connected with a main reactor inlet. The interior of a main reactor is filled with a high-temperature reaction chemosorbent, the interior of an auxiliary reactor is filled with a medium-temperature chemosorbent, and univariate absorption characteristics of chemosorbents with different reaction temperature ranges are utilized for realizing cooling pressure-switching desorption process of high-temperature reaction absorbents. The heat-recovery-typed secondary thermal chemisorption refrigeration circulatory system of the invention can significantly decrease desorption temperature of the chemosorbent in the thermal chemisorption refrigeration circulatory system and expand the utilization scope of waste heat.

The invention belongs to the fields of adsorptive refrigeration/heat pumps, adsorptive separation purification and hydrogen storage, and particularly relates to a chloride-carbonaceous skeleton composite adsorbent and a preparation method thereof. The adsorbent is characterized by comprising the following raw materials: based on a carbonaceous precursor, 0.5 to 2 percent of chloride, 0 to 25 percent of adhesive and 0 to 50 percent of heat conducting material. The preparation method for the chloride-carbonaceous skeleton composite adsorbent is characterized by comprising the steps of crushing of the carbonaceous precursor, preparation of impregnation liquid, impregnation of the carbonaceous precursor, forming, air-blasting drying, carbonization and activation and the like. The adsorbent prepared by the method fully solves the problem of mass transfer coefficient decline caused by filling the chloride and pressing a plugging micropore at the same time of ensuring efficient heat transfer, and obviously improves the loading strength and the utilization rate of the chloride.

The invention provides an adsorption refrigeration device driven by engine exhaust gas. The adsorption refrigeration device comprises a condenser, an evaporator, a high temperature salt adsorption bed and a medium temperature salt adsorption bed which are connected successively to form a refrigerant circulating flow loop. Finned tubes of the high temperature salt adsorption bed are filled with manganese chloride/sulfide expanded graphite composite adsorbents and finned tubes of the medium temperature salt adsorption bed is filled with calcium chloride/sulfide expanded graphite composite adsorbents. Engine exhaust gas is conveyed into the high temperature salt adsorption bed and the medium temperature salt adsorption bed via air and exhaust gas pipes and is discharged to the external environment after heat exchange with the finned tubes of the high temperature salt adsorption bed and the medium temperature salt adsorption bed. The air and exhaust pipes of the high temperature salt adsorption bed and the medium temperature salt adsorption bed lead to the external air through branches. The adsorption refrigeration device is suitable for refrigerator trucks; heat in the engine exhaust gas of the refrigeration trucks can be used for driving the adsorption refrigeration device to obtain cold energy and achieve a refrigerating effect. The adsorption refrigeration device is suitable for more severe working conditions.

The invention relates to an adsorption and vapor compression cascade type refrigeration device and a control method thereof. The refrigeration device comprises a two-stage adsorption refrigeration system, a phase-change cold storage system and a vapor compression refrigeration system, wherein the two-stage adsorption refrigeration system realizes refrigeration under the drive of low-grade heat energy, a first evaporator in the two-stage adsorption refrigeration system is coupled with a second condenser in the vapor compression refrigeration system through the phase-change cold storage system and thereby vapor compression refrigerant of the vapor compression refrigeration system can emit heat outwards at lower condensing temperature. Under the situation that the same refrigeration temperature is realized, compared with the single-stage vapor compression refrigeration device, the electric energy consumption of the adsorption and vapor compression cascade type refrigeration device is greatly reduced. The phase-change cold storage system is arranged on the first evaporator of the two-stage adsorption refrigeration system, the phase-change cold storage system can store partial cold energy to guarantee that the vapor compression refrigerant of the vapor compression refrigeration system is at stable condensing temperature, and the vapor compression refrigeration system can realize lower evaporating temperature.

The invention disclosed solid adsorption unit tube and compound adsorption refrigerating apparatus thereof. The adsorption refrigerating apparatus is composed of adsorbent bed A, adsorbent bed B, condenser and evaporator. The whole adsorption refrigerating apparatus is combined with two adsorption -refrigerating units by heat tube evaporator. Every adsorption unit is composed of multi- solid adsorption unit tubes with independent function. Adsorption section, condensation section and evaporation section separately is in the adsorbent bed, the condenser and the evaporator of the whole adsorption refrigerating apparatus, a heat insulating section is set between the evaporator and the condenser and between the condenser and the adsorbent bed.

The invention discloses a two-grade adsorption type frozen circulatory system driven by low-temperature heat source, which pertains to the adsorption refrigeration field. A first adsorption bed and a second adsorption bed are communicated through a first ammonia connecting pipe and a first ammonia valve; the first adsorption bed is communicated with a condenser through a fourth ammonia connecting pipe and a third ammonia valve ; the second adsorption bed is communicated with an evaporator through a third ammonia connecting pipe and a second ammonia valve. A cold water inlet is respectively connected with the heat exchangers of the first adsorption bed and the second adsorption bed through the heat exchanger of the condenser, a first cooling connecting pipe and a second cooling connecting pipe; a heat medium inlet is respectively connected with the heat exchangers of the first adsorption bed and the second adsorption bed through a first heat-medium connecting pipe and a second heat-medium connecting pipe. The frozen circulatory system of the invention is able to realize the cold output at the temperature of 10 DEG C below zero under the condition of 70 DEG C to 80 DEG C low-temperature heat source.

The invention relates to a cab air conditioner used for adsorbing the tail gas of a truck to cool, comprising generators, a condenser, a liquid receiver, a throttle, an air conditioner of an air cooler containing ammonia, a desorption check valve unit, an adsorption check valve unit, a tail gas input programmable valve unit, a cooling water input programmable valve unit, a PLC programmable controller, a cooling water storage tank, a water pump and a chiller which are communicated by a pipeline valve into a loop; the PLC programmable controller is used for programmable controlling; the tail gas of a truck engine is used for heating and desorbing one of the generators; circulating cooling water is used for cooling and adsorbing the other two generators, thus forming three generator adsorption cooling systems, and further forming desorption and adsorption circulation of ammonia; the cooling circulation of ammonia drives the ammonia cooling fan to cool the truck cab. The air conditioner of the invention combines a multi-generator adsorption cooling system and high-temperature adsorbent, and still effectively realizes adsorption and cooling under the conditions that the cooling water is higher than air temperature, and realizes the air-cooled circulation of cooling water for the generators.

A multi-mode thermochemical adsorption refrigeration device based on cascade utilization of energy belongs to the technical field of refrigeration and air-conditioning and comprises a first reactor, a first reactor heat exchange coil, a second reactor, a second reactor heat exchange coil, a condenser, a condenser heat exchange coil, an evaporator, an evaporator heat exchange coil, a first desorption control valve, a second desorption control valve, a first sorption control valve, a second sorption control valve, a throttle valve, an auxiliary control valve, a high temperature reaction chemosorbent and a low temperature reaction chemosorbent. The device can select the optimal circulation mode according to the external residual heat temperature, and the same set of system can realize double-effect, double and secondary thermochemical adsorption refrigeration circulation mode, thus improving the recovery efficiency of the residual heat with different energy cascades and expanding the utilized temperature range of the residual heat.

A multi-effect adsorption-type refrigeration cycle system belongs to the refrigeration air-conditioning technology field. In the multi-effect adsorption-type refrigeration cycle system, a high-temperature reactor is connected with a high-temperature reactor desorption valve; a medium-temperature reactor is connected with a medium-temperature reactor desorption valve; a low-temperature reactor is connected with a low-temperature reactor desorption valve; the outlets of the high-temperature reactor desorption valve, the medium-temperature reactor desorption valve and the low-temperature reactor desorption valve are all connected with the inlet of a condenser which is connected with a throttle valve; and the outlet of the condenser is respectively connected with the inlets of the high-temperature reactor desorption valve, the medium-temperature reactor desorption valve and the low-temperature reactor desorption valve. The high-temperature reactor desorption valve, the medium-temperature reactor desorption valve and the low-temperature reactor desorption valve are respectively equipped with a reactor heating and cooling coil, and are filled with an adsorbent. During each cyclic process, three times of refrigerating output can be realized by inputting the thermal desorption once, thereby remarkably improving the refrigerating efficiency of the adsorption refrigeration technology and at the same time reducing the system requirement for the heat of the external heat source.

The invention discloses a mass recovery type adsorption refrigeration air-conditioning system on the basis of phase-change heat storage. The mass recovery type adsorption refrigeration air-conditioning system comprises a phase-change heat storage and exchange device, a continuous mass recovery type solid adsorption refrigeration system and a cooling water circulating system. The phase-change heat storage and exchange device comprises a plurality of rows of coiled pipes, heat-conducting media and phase-change heat storage materials, and the multiple rows of coiled pipes are arranged parallelly; the continuous mass recovery type solid adsorption refrigeration system comprises double adsorption beds, a condenser, a throttle valve, an evaporator, a reverser and a mass transfer pipeline; the reverser realizes connecting and reversing effects for the double adsorption beds, the condenser, the throttle valve and the evaporator; the cooling water circulating system comprises a cooling water tank, a circulating water pump, a radiator and circulating working media. The mass recovery type adsorption refrigeration air-conditioning system has the advantages that waste heat of cooling water of an engine is stored by the phase-change materials and can be used for driving the adsorption refrigeration air-conditioning system, accordingly, an air conditioner can continue running after parking in outdoor high-temperature environments in summer, the fuel utilization rate can be greatly increased, and ideas of energy conservation and environmental protection can be practiced while suitable interior environments of vehicles are created.

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

The invention discloses a vegetable greenhouse soil humidity monitoring and methane tank warming water-fertilizer integrated intelligent system, which includes a controlled atmosphere cold storage, a methane tank, an irrigation system, a spray fertilization system and a wet curtain cooling system. The system provided by the invention utilizes a developed primary battery soil humidity sensor for real-time detection of the soil humidity, performs irrigation according to the soil humidity, saves labor, also saves water and energy, has a simple structure and low price, and is convenient to install. While meeting cooling of the controlled atmosphere cold storage, the system also utilizes solar energy and cooling water heating of an adsorption refrigeration system to accelerate fermentation of faces and straw in the methane tank so as to generate a lot of methane, in winter, solar energy and heat regeneration performance of the adsorption refrigeration system are utilized to increase the temperature of the methane tank, hot water of a heat collector in the adsorption refrigeration system is employed to heat a coil pipe in the methane tank, so that the temperature in the methane tank increases to accelerate fermentation of straw, faces and other substances in the methane tank, the generated mass methane can be used for production and living, thus meeting production needs.

The invention discloses a novel adsorption bed and a solar refrigeration system applying the same, and belongs to the technical field of refrigeration equipment. The solar refrigeration system consists of a trough collector, a heat accumulator, an adsorption refrigeration system, a cooler, a collector control valve, an adsorption bed control valve, a circulating pump I, a circulating pump II, a three-way diverter valve I and a three-way diverter valve II. The adsorption bed is applied to the adsorption refrigeration system, and comprises an adsorption bed outer shell, a U-shaped tube, fins, an evaporator connector, a condenser connector, a pressure gage, a temperature sensor and an adsorption bed support plate. As the trough solar collector system is adopted as a heat source of the adsorption bed, conduction oil can be heated to 180-220 DEG C, so that an adsorbent on the adsorption bed can be deeply resolved, and the refrigerating capacity of unit refrigeration steam is increased. As the adsorption bed body is of a fin tubular structure, the heat transfer efficiency is effectively improved.