116 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 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.

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 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 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.

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 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 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.

The application discloses an integrated hydrogen energy storage solid oxide fuel cell combined supply system and an operation strategy, comprising a water electrolysis hydrogen production and energy storage subsystem, a solid oxide fuel cell power generation subsystem, a waste heat recovery subsystem and an absorption refrigeration / heat production subsystem. The system utilizes wind power generation, photovoltaic power generation and cheap valley electricity to produce green hydrogen through a proton exchange membrane electrolytic cell, and realizes efficient energy storage by combining mechanical compression. Meanwhile, the system adopts a solid oxide fuel cell using hydrogen as fuel to generate power, realizes green, efficient and zero-emission power generation, recovers the compression heat generated in the hydrogen and oxygen compression process and the exhaust gas residue of the gas turbine in the fuel cell system through a waste heat recovery system, and finally uses a double-effect absorption refrigeration machine / heat pump to meet the cooling / heating demand. The application can effectively suppress the intermittency and volatility of wind power generation and solar power generation, store wind power generation, photovoltaic power generation and cheap valley electricity, realize efficient power generation and cascade utilization of energy, and meet the energy demand of users for cold, heat, electricity, hydrogen and oxygen.

The application discloses an absorption refrigeration technology field and relates to a crystallization-preventing and step-by-step deep cooling unit and process, which comprises a generation-condensation assembly, an evaporation-absorption assembly and an ejector; the generation-condensation assembly comprises a high-pressure evaporator, a high-pressure generator, a sub-high-pressure generator and a condenser; the evaporation-absorption assembly comprises a medium-pressure absorber, a low-pressure absorber, a medium-pressure evaporator and a low-pressure evaporator; the absorption refrigeration unit is optimized and designed in the application, part of heat in a high-temperature heat source is converted into pressure energy of high-pressure gaseous refrigerant, and the pressure energy of the high-pressure gaseous refrigerant is converted into pressure energy of the absorber through injection, so that the heat source temperature can be reduced, crystallization can be prevented, the absorption efficiency of the absorber can be improved, and therefore the deep cooling efficiency can be improved.

The application relates to the technical field of energy storage battery thermal management, and discloses an energy storage battery thermal management system and a working method thereof. The energy storage battery thermal management system comprises a heat pipe battery rack, an absorption refrigerator and a fan, a heat storage device, and a heating pipe. The heat pipe battery rack comprises a heat pipe condensing section and a heat pipe evaporating section. The absorption refrigerator and the fan are suitable for forming a cooling unit to cool and dissipate heat of the heat pipe condensing section. The heat storage device is connected with the absorption refrigerator to drive the absorption refrigerator to operate. The solar heat collecting plate is connected with the heat storage device to form a light-heat storage unit. The solar heat collecting plate is suitable for collecting solar energy and storing heat in the heat storage device. The heating pipe is arranged in the heat storage device. The heating pipe and a working medium pump are suitable for forming a heating unit with the heat storage device. One end of the working medium pump is connected with the heat pipe evaporating section, and the other end is connected with the heat storage device. The working medium pump is suitable for driving the heat pipe working medium to circulate. The application can realize uniform distribution of the temperature of the energy storage battery and improve the comprehensive energy utilization rate.

A multi-stage absorption chiller may include one or more of a plurality of absorber / generator stages, each stage configured to absorb cooled vapor by a concentrated solution to create a diluted solution and heat the diluted solution to produce a vapor refrigerant and the concentrated solution, a condenser, configured to condense the vapor refrigerant to a cooled high pressure liquid, a pressure regulator, configured to regulate the cooled high pressure liquid from the condenser to a low pressure mixture of liquid and vapor, and an evaporator, configured to cool and evaporate the vapor from the low pressure mixture of liquid and vapor and provide the cooled vapor to the plurality of absorber / generator stages.

A multi-park comprehensive energy system optimization operation method considering energy mutual aid contribution degree comprises the following steps: establishing key equipment models of a multi-park comprehensive energy system, including a combined heat and power generation unit model, other energy conversion equipment models consisting of an electric refrigerating unit and an absorption refrigerating unit, and an energy storage equipment model; establishing a multi-park integrated energy system cooperative game optimization model which comprises an objective function formed by the total cost C of a cooperative alliance formed by N parks, and constraint conditions formed by alliance energy supply and demand constraints, energy purchase constraints, equipment power constraints and energy storage equipment constraints; and distributing the total cost C of the cooperative alliance by using an improved Shapley value method. According to the alliance total cost minimization model established by the invention, the operation constraints of the energy conversion equipment and the energy storage equipment and the energy interaction among the parks are comprehensively considered, the collaborative optimization operation of the MCIES is effectively realized, the fairness and rationality of alliance benefit distribution are ensured, and the stability of the alliance is enhanced.

The application discloses a kind of low NOx emission's flue gas waste heat multi-supply equipment and process in the technical field of environmental protection equipment, comprising: heat pump, denitration device and heat exchanger, the flue gas waste heat multi-supply equipment further includes refrigerating unit, ejector, turbine generator and high-pressure evaporator;The present application is embedded in the existing flue gas waste heat heating system by absorption refrigerating unit, utilizes the waste heat of high-temperature flue gas to drive absorption refrigerating unit, and special working substance is used to absorb and desorb again to pressurize after liquefaction to produce finished product liquid ammonia, compared with pressurization after liquefaction by electric compressor, greatly save electric energy, and it has important strategic significance to realize energy saving and emission reduction.

The present invention relates to a high-temperature exhaust gas purification and waste heat recovery system, comprising an air preheater, a dust collector, a desulfurization tower, an induced draft fan, and a chimney, sequentially arranged on a boiler exhaust duct. The system also includes a primary waste heat recovery subsystem and a purification system. The primary waste heat recovery subsystem includes a waste heat recovery boiler, a steam turbine generator, and an absorption chiller. The waste heat recovery boiler is arranged between the air preheater and the dust collector, the steam outlet of the waste heat recovery boiler is connected to the steam turbine generator, which is connected to the absorption chiller, and the outlet of the absorption chiller is connected to the water inlet of the waste heat recovery boiler. The purification system includes a purification tower arranged between the desulfurization tower and the induced draft fan. The present invention has the beneficial effects of purifying exhaust gas and effectively recovering and utilizing waste heat from the exhaust gas.

The invention discloses a unit and process for preventing crystallization and preparing copious cooling step by step in the technical field of absorption refrigeration. The unit comprises a condensation generation assembly, an evaporation absorption assembly and an ejector. The condensation generation assembly comprises a high-pressure evaporator, a high-pressure generator, a sub-high-pressure generator and a condenser. The evaporation absorption assembly comprises a medium-pressure absorber, a low-pressure absorber, a medium-pressure evaporator and a low-pressure evaporator. The absorption type refrigerating unit is optimally designed, part of heat in a high-temperature heat source is converted into pressure energy of the high-pressure gaseous refrigerant, then the pressure energy is converted into pressure energy of the absorber through ejection of the high-pressure gaseous refrigerant, the temperature of the heat source can be reduced, crystallization can be prevented, the absorption efficiency of the absorber can be improved, and the energy consumption of the absorber is reduced. Therefore, the cryogenic preparation efficiency is improved.

A multi-stage absorption chiller may include one or more of a plurality of absorber / generator stages, each stage configured to absorb cooled vapor by a concentrated solution to create a diluted solution and heat the diluted solution to produce a vapor refrigerant and the concentrated solution, a condenser, configured to condense the vapor refrigerant to a cooled high pressure liquid, a pressure regulator, configured to regulate the cooled high pressure liquid from the condenser to a low pressure mixture of liquid and vapor, and an evaporator, configured to cool and evaporate the vapor from the low pressure mixture of liquid and vapor and provide the cooled vapor to the plurality of absorber / generator stages.

The present disclosure relates to an absorption chiller. The absorption chiller of the present disclosure comprises: an evaporator for evaporating a refrigerant; an absorber in which the refrigerant evaporated in the evaporator is mixed with an absorbent to produce an absorbent liquid; a regenerator for heating the absorbent liquid supplied from the absorber; and a condenser to which the refrigerant produced in the regenerator is supplied. The absorber comprises: a plurality of heat transfer tubes arranged in an up-and-down direction to form a plurality of stages; and a plurality of intermediate distributors disposed between the plurality of heat transfer tubes. The plurality of intermediate distributors may divide the plurality of heat transfer tubes into a plurality of tube groups arranged in a certain number of stages.

The present invention relates to a control method for an absorption refrigeration unit based on thermal compensation, comprising: obtaining the chilled water outlet temperature of an evaporator and comparing the chilled water outlet temperature with a first temperature threshold; executing a general control process if the chilled water outlet temperature is within the first temperature threshold; executing a cooling shortage control process if the chilled water outlet temperature is greater than the first temperature threshold; and executing a cooling surplus control process if the chilled water outlet temperature is less than the first temperature threshold; the cooling shortage control process, the cooling surplus control process, and the general control process are used to determine the cooling load status of the refrigeration unit based on the internal temperature of the generator or a heat balance equation; and generating a control instruction for instructing a heater to adjust its own heating power to perform thermal compensation on the refrigeration unit. The method of the present invention can reduce the hysteresis of the overall adjustment process of the refrigeration unit, thereby reducing fluctuations in the chilled water outlet temperature of the evaporator.