178 results about "Absorption refrigerator" patented technology

The invention discloses a cold and heat supply unit and process capable of deeply utilizing a heat source in the technical field of absorption refrigeration. The cold and heat supply unit comprises a refrigerating unit, a heating unit, a heat source flash tank and a high-pressure absorber. The refrigerating unit utilizes an external heat source to produce cold energy, the heating unit utilizes the heat source used by the refrigerating unit to produce cold energy so as to cool circulating water of the refrigerating unit, and the heat source flash tank utilizes the heat source discharged by the high-pressure absorber to heat; the absorption refrigerating unit is optimally designed, so that the absorption refrigerating unit can deeply utilize a heat source and supply cold and high-level heat energy at the same time, the problem that the heat source utilization rate of the unit is not high is solved, and the requirement for high-temperature heat energy in the production process is met; and low-grade waste heat is converted into cold energy and high-level heat energy, transition and upgrading of energy quality can be achieved, the unit has the cold and heat combined supply function, and the application scene is greatly expanded.

The invention discloses a cryogenic step-by-step preparation unit and process based on injection condensation and enhanced heat absorption in the technical field of absorption refrigeration. The cryogenic step-by-step preparation unit comprises a generation assembly, an evaporation absorption assembly, an injection assembly and a condenser. The evaporation and absorption assembly comprises a medium-pressure evaporator, a low-pressure evaporator, a medium-pressure absorber and a low-pressure absorber; the generating assembly utilizes a heat source to produce a cold source, the medium-pressure evaporator utilizes part of the cold source produced by the generating assembly to primarily cool a secondary refrigerant, and the low-pressure evaporator utilizes the remaining cold source discharged by the medium-pressure evaporator to cool the secondary refrigerant again. The condenser produces cold energy which is used as cold sources of the medium-pressure absorber and the low-pressure absorber respectively; the absorption type refrigerating unit is optimally designed, single-stage refrigeration is replaced by stage-by-stage refrigeration, the problem that the cost of single-stage refrigeration is too high due to the fact that equipment is too large is solved, and then application of the unit in the deep cooling scene is expanded.

The invention discloses an island energy system opportunity constraint weekly optimization scheduling method and system, and the method comprises the steps: converting the opportunity constraint of the actual output of wind and light into a deterministic inequality constraint based on the prediction error probability distribution characteristics of wind power and photovoltaic; according to the obtained wind and light output constraint, a dynamic operation model is established, and waste heat output of the hydrogen fuel cell is coupled with an absorption refrigerator; with the purpose of minimizing the total operation cost of the system, combining the obtained deterministic inequality constraint and the dynamic operation model, defining the power balance constraint of electricity / heat / cold / fresh water, the hydrogen storage tank capacity constraint and the equipment climbing rate constraint, and constructing an optimization model; and solving the optimization model by adopting mixed integer programming to obtain an optimization scheduling scheme. The requirements of electricity, cold, heat and fresh water of an ocean island energy system are met, and meanwhile energy storage and cross-period utilization during wind and light resource enrichment are achieved.

The invention belongs to the field of heat pumps, and provides an integrated cooling and steam supply system which comprises a waste heat drive type absorption refrigerator and a first direct generation type high-temperature steam heat pump which are in bidirectional connection. The waste heat drive type absorption refrigerator comprises a first generator, a first evaporator, an absorber and a first condenser. The first direct generation type high-temperature steam heat pump comprises a first compressor, a throttling mechanism, a steam generator and a water vapor compressor. By absorbing waste heat in the technological process, cooling of an input medium and preparation of high-pressure steam are achieved, recycling of heat is completed, emission of pollutants is reduced, and the energy utilization efficiency is improved; through the first direct generation type high-temperature steam heat pump, loss caused by a conventional flash evaporation process is avoided, and the overall efficiency of the system is improved; the absorber and the first condenser serve as evaporators of the high-temperature steam heat pump, the intermediate circulating water heat exchange process is avoided, and the heat exchange efficiency is improved.

The invention discloses a multi-combined supply system and process based on absorption in the technical field of absorption refrigeration, and the multi-combined supply system comprises an absorption refrigeration unit and further comprises a composite combined heat and power generation assembly; the combined type combined heat and power generation assembly comprises a secondary generator, a medium-pressure evaporator, power generation equipment and a high-pressure absorber, the absorption type refrigerating unit is optimally designed, so that the absorption type refrigerating unit has the functions of refrigerating, heating, power generation and ice making at the same time, the absorption type refrigerating unit is still kept to run at a high load in winter or in the season with the low requirement for the cooling capacity, and the energy consumption is reduced. The problem that the utilization rate of low-grade waste heat is reduced during low-load operation is solved, meanwhile, the low-grade waste heat is converted into electric energy and heat energy, transition and upgrading of energy quality can be achieved, important strategic significance is achieved for energy conservation and emission reduction, the unit can achieve the cooling, heating, power and ice multi-combined supply function, and the energy conservation and emission reduction are achieved. And the application scene is greatly expanded, and the maximum economic benefit of the unit can be exerted.

The invention belongs to the field of air conditioning units, and relates to a multi-stage refrigerating and heating aircraft ground air conditioning unit and a control method thereof, the multi-stage refrigerating and heating aircraft ground air conditioning unit comprises a first-stage module, a second-stage module, a third-stage module, a fourth-stage module and an air supply section; the first-stage module, the second-stage module, the third-stage module, the fourth-stage module and the air supply section are sequentially communicated through air conditioner air supply channels, the first-stage module comprises an indirect evaporative cooler, and the indirect evaporative cooler is provided with a cooling water pipeline; the second-stage module comprises an absorption type refrigerating unit, a solar heat collector and a gas-oil heat exchanger, the solar heat collector is circularly connected with the absorption type refrigerating unit and the gas-oil heat exchanger through heat conduction oil pipelines, and a cooling water pipeline is connected with the absorption type refrigerating unit; the third-stage module adopts a vapor compression type refrigerating unit; the fourth-stage module adopts an electric heater; the air supply section comprises an air feeder and a fresh air supply outlet, and the fresh air supply outlet communicates with the outside of the aircraft ground air conditioning unit. Solar energy and dry air energy can be utilized to form multi-stage refrigeration and heating, and energy consumption is reduced.

The utility model discloses a cold and heat cogeneration type lithium bromide unit. A condenser, a generator, a first absorber and a first evaporator are combined to form an absorption refrigerator, and the condenser, the generator, a second absorber and a second evaporator are combined to form an absorption heat pump; an inlet of the three-way valve is connected with a waste heat source, a first outlet of the three-way valve is connected with a tube pass of the generator, and a second outlet of the three-way valve is connected with a tube pass of the second evaporator; the cooling water pipeline is connected with the tube pass of the condenser and the tube pass of the first absorber; the heating water pipe is communicated with the tube pass of the second absorber; the refrigerating water pipe is connected with the tube pass of the first evaporator; according to the scheme, simultaneous refrigeration and heating of one set of equipment are achieved, and the refrigeration and heating capacity can be adjusted according to customer requirements.

According to the RH vacuum refining furnace production waste heat recovery system and method, the waste heat recovery system recovers tail gas waste heat in the RH vacuum refining furnace production process through the air exhaust pipeline heat exchanger and the vacuum pump heat recovery mechanism, high-temperature hot water is prepared, the production tail gas waste heat is fully recovered, and the production efficiency is improved. And then the high-temperature hot water is introduced into the absorption refrigerating unit to prepare cold water, and the generated cold water is used as cooling water in the running process of the RH steam jet vacuum pump, so that the steam consumption and the water consumption of the steam jet pump are reduced. Recycled hot water is recycled in different water pools according to different temperatures and is used in a graded and classified mode, recycling is more reasonable, and efficiency is higher. Recycled hot water with the low temperature is introduced into a user heating system, the production waste heat of the RH refining furnace is fully utilized, and energy consumption and cost for heating of users are reduced; cold water generated by the absorption type refrigerating unit is collected in the cold water pool, the generated cold water is fully utilized to provide air conditioner refrigerating service, and the using energy consumption of an air conditioner is reduced.

The invention relates to the technical field of gas-fired boilers, in particular to a distributed energy system based on a gas-fired boiler and an operation method. A three-layer convolutional neural network model is adopted by a load prediction module of the intelligent control platform, a cooling, heating and power load prediction value is output through convolutional layer feature extraction and a full connection layer, and an energy scheduling module is combined based on a model prediction control algorithm, and the lowest system operation cost is taken as a target. State variables such as steam pressure and the opening degree of a fuel regulating valve are optimized in a rolling mode, the load prediction accuracy and the multivariable collaborative optimization capacity are improved, and steam emptying is reduced. A steam exhaust port of a low-pressure steam turbine of a double-shaft back pressure type steam turbine set is divided into two paths which are connected with a steam-water heat exchanger and an absorption refrigerator respectively, steam exhaust flow distribution is adjusted through an electric adjusting valve, a water heat storage tank and a lithium battery energy storage system are combined, cooperative control is conducted through an energy management gateway, heat is stored and released during heat load fluctuation, and charging and discharging are conducted in the valley-peak section of a power grid. The heat-to-electricity ratio adjusting range is widened, and insufficient heat supply is reduced.

A flue gas low-temperature purification system. The flue gas low-temperature purification system comprises: a spray column (1), an adsorption column (2), a regeneration column (3), a heat exchanger (4) and an absorption refrigerator (5), wherein the spray column (1) is used for cooling flue gas to low-temperature flue gas at subzero temperature; the adsorption column (2) is used for adsorbing the low-temperature flue gas and purifying same into clean flue gas; the regeneration column (3) is used for heating an adsorbent in the regeneration column (3) for regeneration; the regeneration column (3) is connected to the adsorption column (2), so that the adsorbent circulates between the adsorption column (2) and the regeneration column (3); a heat exchange medium introduced from a cold side inlet (43) in the heat exchanger (4) exchanges heat with the flue gas discharged from a boiler flue and then is supplied into the regeneration column (3); a generator inlet (51) of the absorption refrigerator (5) is connected to a hot side outlet (42); an evaporator inlet (53) of the absorption refrigerator (5) is connected to a spray liquid outlet of the spray column (1); and an evaporator outlet (54) of the absorption refrigerator (5) is connected to a spray liquid inlet of the spray column (1) for cooling spray liquid.

A thermal storage absorption refrigeration unit, including: a thermal storage device and an absorption refrigerating machine; an output end of the thermal storage device is connected to an input end of the absorption refrigerating machine. The excessive wind and solar power, along with electricity from the grid during off-peak hours, are stored in thermal storage device in the form of heat. These thermal storage device are configured to serve as the heat source for the absorption refrigerating machine. The thermal storage device can achieve an energy storage efficiency of 96%, offering advantages over battery storage, compressed air energy storage, and pumped hydro storage in terms of safety, efficiency, energy savings, and low upfront investment.

The invention discloses a combined cooling heating and power supply device based on a data center combined with solar energy, which comprises the data center, a solar water heater, a boiler, a steam turbine generator, a primary heat exchanger, a secondary heat exchanger and an absorption refrigerator, high-temperature steam is formed by further heating in a boiler and then enters a steam turbine generator to drive a generator to generate electricity, dead steam discharged after expansion acting enters a first-stage heat exchanger and is changed into high-temperature hot water after heat exchange, and the high-temperature hot water enters an absorption refrigerator, and low-temperature hot water flowing out of the absorption refrigerator enters a second-stage heat exchanger; and the cooled water is used as cooling water for the air conditioner of the data center. Compared with an existing data center waste heat utilization system, the system has the advantages that solar energy is introduced, renewable energy sources are utilized to further reduce power generation energy consumption, dead steam discharged after the steam turbine does work is utilized, the heat supply and cold supply requirements are met in combination with the absorption refrigerator, gradient utilization of energy is achieved, and the heat utilization efficiency is improved.

The invention discloses a gas turbine combined cycle cooling, heating, power and hydrogen combined supply system coupling high-temperature heat storage and phase change cold storage and an operation control method thereof, the system is composed of a power plant inner side subsystem and an outer side subsystem, the power plant inner side subsystem comprises a gas turbine combined cycle unit, a high-temperature heat storage unit and a steam collector, the split-flow heat storage of high-temperature exhaust smoke heat and the flexible allocation of high-temperature steam are realized; the system comprises a hydrogen production unit and a heat and cold supply pipe network, and is combined with a steam turbine, an absorption refrigeration device, a mechanical refrigeration device and a phase change cold storage device, so that efficient supply and gradient utilization in a multi-energy form are realized. The operation control method provided by the invention comprises the steps of parameter acquisition and demand prediction, steam distribution regulation and control, heat storage and heat release management, hydrogen production load regulation and waste heat coupling utilization, cold and heat energy regulation, cold storage balance and the like, and is assisted by layered optimization control of an energy management platform; and multi-energy cooperative supply and flexible peak regulation of electric power, heat energy, cold energy and hydrogen energy can be achieved.

The invention belongs to the technical field of building energy management and energy storage, and provides a building load transfer system and method based on graded phase change heat storage, in an energy storage stage, high-temperature hot water prepared by an electric heating device enters a graded phase change energy storage subsystem through a pipeline; in the heat supply stage, building return water is heated by the high-temperature energy storage unit and the low-temperature energy storage unit and then fed into the heat supply tail end; in the refrigeration stage, hot water output by the high-temperature energy storage unit drives the ammonia water absorption refrigerator to generate chilled water, then cooling is conducted through the heat supply tail end, and the high-temperature energy storage unit and the low-temperature energy storage unit are innovatively arranged in series; during energy storage, hot water sequentially releases heat according to the temperature from high to low, and return water sequentially absorbs heat according to the temperature from low to high during energy release and heat supply, so that temperature alignment and gradient utilization of heat energy are realized, loss in the heat transfer process is greatly reduced, and the overall energy utilization efficiency is remarkably higher than that of a traditional single-stage heat storage system; and the application of the phase change energy storage technology in building energy storage and energy utilization is promoted.

The invention provides a flue gas carbon dioxide capturing and sealing system, which comprises an absorption tower, a regeneration tower, a separator, a sealing unit and an absorption refrigerator, the absorption tower is provided with a flue gas inlet for introducing flue gas, the regeneration tower is connected with the absorption tower, and the separator is connected with the absorption refrigerator. An absorbent in the absorption tower reacts with flue gas to form a saturated absorbent, the saturated absorbent is introduced into the regeneration tower, the regeneration tower is used for desorbing the saturated absorbent and then introducing the saturated absorbent into the absorption tower, the separator is connected with the regeneration tower, the sealing unit comprises a compression assembly and a drying assembly, the compression assembly is connected with the separator, and the drying assembly is connected with the compression assembly. The drying assembly comprises a drying tower and a heater, the heater is connected with the drying tower, a hot side inlet of the absorption refrigerator is connected with a steam outlet of the heater, and a cold side outlet of the absorption refrigerator is connected with at least one of the separator and the absorption tower. The flue gas carbon dioxide trapping and sealing system is high in energy utilization rate and low in overall consumption.

The present disclosure provides: a control device that efficiently operates an air conditioning system in which the waste heat of a power generation device is utilized in an absorption refrigerator; and a control method for the absorption refrigerator.　A control device according to the present disclosure controls an absorption refrigerator that is provided in an air conditioning system including a power generation device and that utilizes, as a heat source, waste hot water warmed by waste heat of the power generation device, the control device comprising: a reception unit that receives an activation instruction for the air conditioning system; and a control unit that, after reception of the activation instruction, determines, on the basis of the temperature of the waste hot water, a timing for transmitting an activation instruction to the absorption refrigerator.

The application discloses a multi-time scale hierarchical scheduling method for a combined heat and power system containing electric vehicles, and the system comprises a micro gas turbine unit, an absorption refrigeration unit, a ground source heat pump unit, a wind turbine unit, photovoltaic, a battery, a super capacitor and a heat storage device. The optimization method contains two time scales. In the day-ahead stage, economic scheduling is carried out according to the day-ahead predicted power value of wind power and photovoltaic and the day-ahead predicted value of load power in the system, and a target function and optimization constraint condition are established, and the result is used as a reference for the day-ahead optimization. In the day-ahead stage, a two-layer rolling optimization model is considered, a target function and a constraint are established, and a model predictive control (MPC) rolling optimization layer corrects the result of the upper layer according to real-time predicted power information and non-planned behavior of the electric vehicle (EV). The application adopts a multi-time scale hierarchical optimization strategy, real-time tracks the optimal scheduling strategy of the combined heat and power system containing electric vehicles, and realizes a win-win situation between the electric vehicle owner and the micro-grid operator.

A system for utilizing abandoned wind power with electrical complementary combined cooling and heating supply includes a wind farm that supplies power to the power grid. The abandoned wind power is stored as thermal energy through a heat storage electric boiler. The heat storage electric boiler supplies part of the energy to an absorption chiller to supplement the refrigeration application powered by the power grid. The remaining thermal energy is used for heating the urban heat load, and the thermal energy required for the remaining urban heat load is supplemented by a gas boiler. An "electrical complementary - combined cooling and heating supply" model is established according to the characteristics of abandoned wind power and cooling and heating loads. Then, considering the heating and cooling costs, an economic model of "electrical complementary - combined cooling and heating supply" is constructed. Finally, through case analysis, the economy is compared with the traditional "gas boiler - air conditioner" heating and cooling model. The results show that the proposed mode can reduce carbon emissions while consuming abandoned wind power, achieving the purpose of improving the system benefits.

Systems and methods for operating a datacenter are disclosed. In at least one embodiment, method for operating a datacenter includes receiving a source of gas to a fuel cell to produce electrical power. The method further includes providing the electrical power to one or more electronic components in the datacenter. The method further includes capturing waste heat, generated by the fuel cell in converting the gas to the electrical power, using a heat exchanger. The method further includes providing the waste heat to an absorption chiller to produce cooled liquid to be utilized with a cooling system to remove heat from the one or more electronic components.

The application discloses a marine double-cold-source heat energy saving and controlling air conditioning unit and relates to the technical field of air conditioning units. The marine double-cold-source heat energy saving and controlling air conditioning unit comprises an outer frame, a controller is arranged on the inner bottom surface of the outer frame close to the front surface, and a compression refrigerating machine for providing stable refrigerating capacity is arranged on the inner side edge of the outer frame. The marine double-cold-source heat energy saving and controlling air conditioning unit guarantees the efficient utilization of ship exhaust gas, fixedly connects a medium-temperature exhaust gas pipeline in the ship with a first three-way pipe, preheats the heat conducting oil, and when the high-temperature exhaust gas in the smoke heat exchanger is insufficient to normally provide stable high-temperature heat source for the absorption refrigerating machine, the heat conducting oil can be preheated in the preheating bin and then rapidly heated in the smoke heat exchanger, so that the temperature of the heat conducting oil is rapidly raised, the stable operation of the absorption refrigerating machine is guaranteed, and the ship exhaust gas is efficiently utilized.

The application discloses a carbon dioxide pressurization system and a carbon dioxide pressurization method, and belongs to the technical field of pipeline transportation. In the system, a multistage pressurization compressor pressurizes gaseous carbon dioxide multiple times until the liquefaction pressure of the carbon dioxide is reached, and the heat generated by the gaseous carbon dioxide after each pressurization is transferred to an absorption refrigerator through a first heat exchange system for heat exchange. When the liquefaction pressure is reached, the multistage pressurization compressor transfers the heat generated by the gaseous carbon dioxide reaching the liquefaction pressure to the absorption refrigerator through a second heat exchange system for heat exchange. The second heat exchange system cools the gaseous carbon dioxide to obtain liquid carbon dioxide, and the liquid carbon dioxide is transported to a pressurization system, and the pressurization system pressurizes the liquid carbon dioxide to a supercritical pressure. The system can cool the carbon dioxide by absorbing the heat generated by the pressurization of the carbon dioxide through the absorption refrigerator, does not need to input extra energy, and can greatly reduce energy consumption.

The present invention discloses a drug concentration and drying device, which relates to the technical field of drug production, and includes a first-effect evaporator, a first absorption heat pump, a second absorption refrigerator, a shaping mechanism and a drying chamber, wherein the first absorption heat pump is respectively connected to one end of the first-effect evaporator and the second absorption refrigerator through a pipeline, and the other end of the second absorption refrigerator is connected to a heating mechanism in the air duct of the drying chamber through a pipeline, and the drug stock solution enters the shaping mechanism and the drying chamber in sequence after being heated by the first-effect evaporator. The present invention can not only greatly reduce the large amount of steam consumed in the drug production process and reduce the consumption of fossil energy, but also utilize a large amount of low-temperature waste heat resources generated, and at the same time connect the downstream drug drying, greatly improve the utilization of energy in the drug production process, and reduce the production cost of the drug.

The application provides a RH vacuum refining furnace production waste heat recovery system and method, wherein the waste heat recovery system recovers the tail gas waste heat in the production process of the RH vacuum refining furnace through a gas extraction pipeline heat exchanger and a vacuum pump heat recovery mechanism, produces high-temperature hot water, fully recovers the production tail gas waste heat, then introduces the high-temperature hot water into an absorption refrigerating unit to produce cold water, and uses the generated cold water as cooling water in the operation process of the RH steam jet vacuum pump, thereby reducing the steam consumption and water consumption of the steam jet pump. The recovered hot water is recovered in different water pools according to different temperatures, and is used in stages, so that the recovery is more reasonable and the efficiency is higher. The recovered hot water with a lower temperature is introduced into a user heating system, the production waste heat of the RH refining furnace is fully utilized, and the energy consumption and cost of user heating are reduced; the cold water generated by the absorption refrigerating unit is collected in a cold water pool, the generated cold water is fully utilized to provide air conditioning refrigeration services, and the energy consumption of air conditioning is reduced.

The application discloses a district distributed energy system (DDES) station-network collaborative optimization technology considering load point access order. According to regional planning data of the research object, the energy distance method is combined with the K-means clustering method to solve the site selection and scale of the energy station. A pipe planning algorithm based on the shortest path method (DA) and the genetic algorithm (GA) is adopted to solve the simultaneous optimization problem of pipe layout and pipe diameter. On this basis, the coupling of the energy station and the pipe network is analyzed, and an energy station equipment capacity configuration optimization model is established, taking the annualized construction cost and operation cost of the equipment as the target, and establishing mathematical models of the internal combustion engine, the auxiliary boiler, the electric refrigerator unit and the absorption refrigerator unit. The equipment capacity configuration of the energy station is obtained by solving the mixed integer linear programming problem, realizing the DDES station-network collaborative optimization design, and improving the economy and technology of the system.

The utility model discloses a waste heat utilization system of a compression heat regeneration adsorption type drying machine. The waste heat utilization system comprises a precooler, an air compressor, the compression heat regeneration adsorption type drying machine, an absorption refrigerator and a cooling tower, the precooler is connected with an air compressor, and the air compressor is connected with a compression heat regeneration adsorption dryer; the compression heat regeneration adsorption dryer comprises a cooler; the cooler is connected with an absorption refrigerator to form a waste heat utilization circulation loop; the absorption refrigerator is connected with the precooler to form a chilled water circulation loop; and the absorption refrigerator is connected with the cooling tower to form a cooling water circulation loop. Waste heat of compressed air treated by the compression heat regeneration adsorption type drying machine can be used for providing a heat source for the absorption type refrigerating machine to prepare chilled water to be conveyed to the precooler, so that the temperature and humidity of air at an inlet of the air compressor are reduced, the air yield of the air compressor is improved, the energy consumption of the air compressor is reduced, and safe and economical operation of the air compressor is guaranteed.

An absorption type chiller includes an evaporator; an absorber which generates an absorption liquid by mixing the refrigerant evaporated in the evaporator with an absorbent; a regenerator which heats the absorption liquid supplied from the absorber; a condenser to which refrigerant generated in the regenerator is supplied; and a heat pipe which is arranged in at least one of the evaporator and the absorber and elongated. The heat pipe includes a plurality of protrusions which protrude from a surface of the heat pipe and are arranged in a longitudinal direction and a peripheral direction of the heat pipe. A distance between the plurality of protrusions arranged in the peripheral direction of the heat pipe is smaller than a distance between the plurality of protrusions arranged in the longitudinal direction of the heat pipe.

The invention relates to an organic heat carrier furnace, which adopts fuel oil preheating, micro heat-conducting oil furnace waste heat recovery and absorption refrigerator cooling technologies, is beneficial to sufficient combustion of fuel oil of the organic heat carrier furnace and efficient recovery of flue gas waste heat, effectively avoids low-temperature corrosion of flue gas, realizes combined cooling and heating, and is flexible and convenient to operate and adjust. The novel combined cycle operation system of the organic heat carrier furnace is formed, the problem that waste heat of the organic heat carrier furnace is difficult to recycle is solved, and the combined cycle operation system has good economic and social significance in implementation and popularization.

The presented invention relates to a fuel cell system (100) for converting energy, wherein the fuel cell system (100) comprises: - a fuel cell stack (101), - an air supply line (103) for supplying air to the fuel cell stack (101), - an exhaust air duct (105) for removing exhaust air from the fuel cell stack (101), - an absorption chiller (107), - a water reservoir (109), - a water supply system (111), wherein the absorption chiller (107) is arranged on the exhaust air duct (105) and is configured to separate water from the exhaust air and direct it into the water storage tank (109), and wherein the water supply system (111) is configured to introduce water from the water storage tank (109) into the supply line (103).

The utility model belongs to the technical field of ammonia water preparation, and provides a condensing device for an ammonia water absorption type refrigerating unit. The utility model relates to a condensing device for an ammonia water absorption refrigerating unit. The condensing device comprises a main box body, a plate heat exchanger, a hydraulic assembly and a suction main piece, the main box body is provided with a mounting main cavity and a sliding cavity; the plate heat exchanger is installed in the main box body and located in the installation main cavity, and one end of the plate heat exchanger extends outwards and is connected with one end of the suction main piece; the other end of the plate heat exchanger extends outwards and is used for collecting cooled ammonia water; the other end of the suction main piece is communicated with a high-pressure ammonia gas source; the mounting main cavity is communicated with the sliding cavity; liquid nitrogen is injected into the mounting main cavity in a sealed mode, and the plate heat exchanger is immersed in the liquid nitrogen. The hydraulic assembly is installed in the sliding cavity in a sliding mode. The device not only is reasonable in design, but also is simple to operate, and can effectively improve the condensation effect and reduce the plate-type external heat of a core component.

The present application relates to the technical field of refrigerators, in particular to a lithium bromide absorption refrigerator combined with zeolite membrane technology and a refrigeration method, the refrigerant comprising an absorber, a membrane separation unit, a compression unit and an evaporator; the membrane separation unit is installed between the absorber and the compression unit, the feed side inlet of the membrane separation unit is connected with the dilute solution discharge port of the absorber, and the retentate side outlet is connected with the concentrated liquid inlet of the absorber; the permeation side outlet of the membrane separation unit is connected with the inlet of the compression unit, the liquefied water outlet of the compression unit is connected with the inlet of the evaporator, and the steam outlet of the evaporator is connected with the water vapor inlet of the absorber. The present application uses the normal temperature concentration technology of zeolite membrane, can omit the generator in the traditional lithium bromide absorption refrigerator, simultaneously reduces the heat exchange network, significantly improves the concentration efficiency of the lithium bromide refrigeration system, effectively reduces the energy consumption and the dependence on high temperature heat source, and reduces the traditional high temperature concentration.