124results about "Boilers/analysers" patented technology

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 energy-saving efficient refrigerating unit and process for preventing cavitation of a steam condensate pump in the technical field of refrigeration. The energy-saving efficient refrigerating unit comprises a high-pressure generator, a medium-pressure generator, a high-pressure evaporator, the steam condensate pump, a composite power generation compressor and a refrigerating assembly. Heat of saturated steam condensate flowing out of the high-pressure generator is absorbed by the high-pressure liquid refrigerant through the high-pressure evaporator, and the saturated steam condensate is changed into supercooled steam condensate, so that cavitation cannot be generated when the supercooled steam condensate enters the steam condensate pump, an original mode of increasing the height difference between the generator and the steam condensate pump is replaced, and the production efficiency is improved. The cost of a unit pipeline is reduced, meanwhile, the cost of ultrahigh transportation is reduced, heat contained in saturated steam condensate is converted into pressure energy of a high-pressure gaseous refrigerant to be used for driving a composite power generation compressor to work, the pressure energy is converted into electric energy and pressure energy of a low-pressure gaseous refrigerant, and the electric energy is used for a solution pump. The deep utilization of the internal energy of the unit can be realized, and the COP of the unit is improved.

The utility model discloses condensing equipment for a carbon dioxide compression refrigeration system and the carbon dioxide compression refrigeration system comprising the condensing equipment. The condensing equipment comprises a generator for receiving gas carbon dioxide at a first temperature and cooling the gas carbon dioxide at the first temperature into gas carbon dioxide at a second temperature; the intermediate heat exchanger is used for receiving the gas carbon dioxide at the second temperature, so that the gas carbon dioxide at the second temperature is converted into the gas carbon dioxide at the critical temperature; the evaporator enables the gas carbon dioxide at the critical temperature to be cooled by the refrigerant liquid to realize condensation phase change, and the gas carbon dioxide is changed into liquid carbon dioxide to be discharged; a condenser; and an absorber.

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 discloses an efficient absorption heat pump system with low start-stop frequency during variable load of a gas-fired boiler, and belongs to the technical field of absorption heat pumps. Comprising a multi-module absorption heat pump system, and a gas-fired boiler flue gas total heat recovery system, a heat storage and air regulation system and a flue gas condensate water and heat supply network return water heating system which are respectively connected with the multi-module absorption heat pump system; according to the efficient absorption type heat pump system with the low start-stop frequency during the variable load of the gas-fired boiler, a single generator and a single absorber of a traditional absorption type heat pump are changed into a generator set and an absorber set of three modules, and a heat storage and air regulation system is configured; the problems that COP of the absorption heat pump drops suddenly during load fluctuation, driving force is insufficient and a generator is overheated and shuts down frequently are solved while effective recycling of smoke latent heat is guaranteed, and the operation stability of the gas-fired boiler coupling absorption heat pump system is improved.

An electric lithium bromide absorption air conditioning unit and an energy storage refrigeration and heating system, including an electric lithium bromide absorption air conditioning unit and an electric heat storage device; the electric lithium bromide absorption air refrigeration unit comprises an electric heat generator; the electric heat generator comprises an electric heating device and / or an heat storage and heat exchanging device, and a grid power supply; the electric heating storage device comprises a heat storing and exchanging tank; the electric heating device is connected to the grid power supply. The generator used is an electric heating-type heat generator. By utilizing lithium bromide, it disrupts the conventional refrigeration compression cycle air conditioning system to address the global warming issue. This system can also give rise to independent energy storage cooling or heating solutions for grid-side energy storage projects, helping to solve the energy storage issues on the grid user side.

The utility model discloses an efficient hot water type lithium bromide absorption unit, which is characterized in that an evaporator, an absorber and a generator all adopt two-stage heat exchange, a condenser adopts single-stage heat exchange, the unit mainly comprises two independent solution circulation loops and a refrigerant pipeline, and a first-stage generator and a second-stage generator are connected in series through a pipeline. The second-stage absorber, the first-stage absorber and the condenser are connected in series through a pipeline, and the second-stage evaporator and the first-stage evaporator are connected in series through a pipeline. According to the unit, the consumption of high-grade heat energy is reduced or replaced by recovering medium-low temperature waste heat water in a factory, so that the comprehensive utilization efficiency of energy is improved; variable working condition adjustment can be achieved, and adaptability to temperature changes of waste heat water is good; meanwhile, power consumption of the unit can be reduced, and a better heat exchange effect can be achieved.

The utility model provides an efficient hot water type lithium bromide absorption unit arranged in a left-right structure, an evaporator, an absorber and a generator all adopt two-stage heat exchange, a condenser adopts single-stage heat exchange, and the unit mainly comprises two independent solution circulation loops and a refrigerant pipeline, the first-stage generator and the second-stage generator, the second-stage evaporator and the first-stage evaporator, and the second-stage absorber and the first-stage absorber and the condenser are connected in series through pipelines; the unit is arranged in a left-right structure, the first-stage generator and the second-stage generator and the condenser are arranged in a left-right mode, the first-stage absorber and the first-stage evaporator are arranged in a left-right mode, and the second-stage absorber and the second-stage evaporator are arranged in a left-right mode. According to the unit, the consumption of high-grade heat energy is reduced or replaced by recovering medium-low-temperature waste heat water in a factory, so that the comprehensive utilization efficiency of energy is improved, meanwhile, the left-right structural arrangement is beneficial to the compactness of the overall structure of the unit, and the occupied area is reduced.

An absorption chiller system includes a generator section, a condenser section, an evaporator section and an absorber section all in fluid communication with each other and which operate to circulate a refrigerant therethrough. The evaporator section includes a transport membrane heat exchanger. The transport membrane heat exchanger includes a first and a second flow path. The first flow path is operable to flow the refrigerant therethrough under a vacuum pressure that is low enough to vaporize the refrigerant within the first flow path. The second flow path is operable to pass a fluid having water therethrough. Both water and heat are transferred from the fluid in the second flow path to the refrigerant in the first flow path through a membrane-based material of the transport membrane heat exchanger, such that the fluid passing through the second flow path has at least a portion of its water removed and is cooled.

This invention relates to a low-grade waste heat-driven two-stage absorption refrigeration system and method, comprising: a low-pressure stage solution circulation loop, a high-pressure stage solution circulation loop, and a refrigerant circulation loop; saturated liquid output from the condenser in the refrigerant circulation loop mixes with condensed saturated liquid output from the high-pressure stage solution circulation loop, and then undergoes primary throttling and pressure reduction to an intermediate pressure via a first throttling valve before entering a gas-liquid separator for separation; the separated saturated vapor is absorbed by the high-pressure stage solution circulation loop; the separated saturated liquid mixes with condensed saturated liquid output from the low-pressure stage solution circulation loop, and then undergoes secondary throttling and pressure reduction to an evaporation pressure via a second throttling valve before entering an evaporator for evaporation and cooling to generate cooling capacity. This invention utilizes two-stage throttling of the refrigerant at the condenser outlet to reduce irreversible losses, and simultaneously utilizes superheated steam from the generator outlet to preheat the dilute solution, fully utilizing waste heat, which can significantly improve the performance of traditional two-stage absorption refrigeration systems.

Apparatus for staged startup of air-cooled low charged packaged ammonia refrigeration system includes motorized valves on condenser coil inlets, a main compressor discharge motorized valve, a bypass pressure regulator valve in the main compressor piping, check valves on the condenser outlets and speed control of the condenser fans. The condenser inlet motorized valves provide precise control of gas feed to the condensers, so pressure can build without collapsing the oil pressure. The condenser coil outlet contains inline check valves to prevent liquid backflow when a coil is isolated. The compressor discharge line contains a single motorized valve for regulating discharge pressure at start-up. The motorized valve in the compressor discharge piping also includes a bypass with a mechanical pressure regulator to allow precise regulation at the minimum discharge pressure. Once discharge pressure rises above the minimum setpoint, the condenser inlet solenoid coils will open one at a time. The discharge pressure regulating motorized valve will simultaneously regulate the discharge pressure until the condenser coil has warmed up enough to maintain discharge pressure.

The present invention discloses an energy storage system and method for integrated absorption refrigeration using R134a as a circulating medium. The system includes an energy storage power generation module, an absorption refrigeration module, a solar heating module, an oil tank module, and a thermochemical energy storage module. The R134a vapor outlet of the reaction absorber is connected to the R134a storage tank. The R134a vapor discharged from the R134a storage tank flows to the energy storage power generation module and the absorption refrigeration module to provide cooling and electricity. Heating and cooling in the reaction absorber are achieved through heat exchange with hot and cold oil, which is provided by the solar heating module, the oil tank module, and the thermochemical energy storage module. Using R134a refrigerant as the circulating medium for the energy storage power generation module and the absorption refrigeration module increases energy storage density. Combining the absorption refrigeration device with the compressor unit and gas storage unit of the compressed air energy storage device to form a reaction absorber allows for miniaturization of the device. The multiple energy supply meets the uninterrupted cooling and power supply needs of small residential and commercial buildings.

The utility model relates to a first-class lithium bromide absorption heat pump unit for preparing a high-temperature heat source. Comprising a generator A, a condenser A, a generator B, a condenser B, an evaporator A, an absorber A, an evaporator B, an absorber B, a heat exchanger A, a heat exchanger B, a solution pump A, a refrigerant pump A, a solution pump B, a refrigerant pump B, an internal circulation water pump, an internal circulation medium-temperature hot water system, pipelines, valves and the like, recycled low-temperature waste heat source heat is transferred to internal circulation medium-temperature hot water through the evaporator A and the absorber A. The internal circulation medium-temperature hot water enables the evaporation temperature of the evaporator B to be increased and the absorption pressure to be increased, so that the absorber B produces a high-temperature heat source. The generator and the condenser adopt independent cylinders, the pressure bearing capacity and the thermal displacement capacity of the unit are improved, the generating pressure and the condensing temperature are increased, and a high-temperature heat source can be produced. The unit expands the application field, realizes single-machine ultra-large type, reduces the total investment, and improves the comprehensive utilization rate of energy.

The invention provides a third-class jet-absorption heat pump, and belongs to the technical field of heat pumps. The low-temperature generator is communicated with the high-temperature generator through the solution pump, the solution heat exchanger and the second solution heat exchanger, the high-temperature generator is communicated with the absorber through the second solution heat exchanger, the absorber is communicated with the low-temperature generator through the solution heat exchanger, the low-temperature generator is communicated with the low-temperature condenser, and the low-temperature condenser is communicated with the evaporator through the low-pressure pump. The high-temperature generator is communicated with the high-temperature condenser, the high-temperature condenser is communicated with the evaporator through the throttling valve, the high-temperature condenser is communicated with the steam generator through the high-pressure pump, the steam generator is communicated with a high-pressure steam inlet of the ejector, the evaporator is communicated with a low-pressure steam inlet of the ejector, and the ejector is communicated with the absorber. The high-temperature generator and the steam generator are provided with high-temperature heat medium channels, the absorber and the high-temperature condenser are provided with heated medium channels, the low-temperature condenser is provided with a cooling medium channel, the low-temperature generator and the evaporator are provided with low-temperature heat medium pipelines to be communicated with the outside, and the third-class jet-absorption heat pump is formed.

The invention discloses a shutdown control method and control device for a large absorption heat pump, and the shutdown control method comprises the steps: respectively obtaining pressure data P1 in a generator and pressure data P2 in an absorber after the large absorption heat pump receives a shutdown instruction; calculating a difference value between the pressure data P1 and the pressure data P2 to obtain a pressure difference delta P between the generator and the absorber; adjusting the actual operation frequency of the solution pump based on the pressure difference delta P actual corresponding to the actual lift of the solution pump; when the pressure difference delta P is smaller than or equal to a preset shutdown deviation value, the solution pump is controlled to operate at a low maintenance frequency and used for providing micro-pressure guarantee for solution circulation; and after the solution pump continuously runs for a preset time at the lower maintaining frequency, the solution pump stops running. Smooth and controlled frequency reduction and shutdown of the solution pump in the shutdown process are achieved, and violent vibration and abnormal sound in the shutdown process of a large absorption heat pump are eliminated.

The invention provides a catalyst regeneration energy recovery heat pump system, and belongs to the technical field of thermodynamics and heat pumps. An air channel outside is communicated with the charring-regeneration system through a heat source regenerator, and the charring-regeneration system is further provided with a flue gas channel which is communicated with the outside through a high-temperature heat exchanger, a generator and the heat source regenerator. An absorber is communicated with a generator through a solution pump and a solution heat exchanger, the generator is communicated with the absorber through a concentrated solution pipeline and the solution heat exchanger, the generator is communicated with an expansion machine through a refrigerant steam channel, a compressor, a heat regenerator and a high-temperature heat exchanger, and the expansion machine is communicated with the expansion machine through the refrigerant steam channel and the heat regenerator. The expansion machine is communicated with a condenser through a refrigerant steam channel, the condenser is communicated with an evaporator through a throttling valve, and the evaporator is communicated with an absorber through a refrigerant steam channel. The absorber and the condenser are respectively provided with a heated medium channel, the evaporator is communicated with the outside through a low-temperature heat medium channel, the expansion machine is connected with the compressor and transmits power, and the catalyst regeneration energy recovery heat pump system is formed.

Rectifier (100) for a generator (200) of refrigerant vapour, said rectifier being adapted to modify the percentage of a refrigerant substance present in vapour flows (V) generated by boiling a liquid solution (L) comprising at least one absorbent substance and a refrigerant substance absorbed and characterized in that it comprises at least: • - a casing (101) which extends along a substantially vertical reference axis (X) and includes at least a first transversal duct (102) suitable for allowing the introduction of flows of said liquid solution (L) to be boiled; • - at least a first body (105) consisting of an open cell ceramic foam which is housed in said casing (101) below said first duct (102) so as to be crossed by flows of the liquid solution (L) to be boiled which, going downwards, wet its surfaces, and by vapour flows (V) generated by boiling which, going upwards, exchange heat with the solution itself which wets the surfaces of the first body (105), causing at the same time evaporation of refrigerant from the liquid solution (L) and the condensation of at least a part of the absorbent substance contained in said vapour streams (V) going upwards.

The utility model relates to metal hydride compressor technical field especially utilizes a kind of metal hydride compressor system of ion compound cooling and heating, including generator, ion compound concentrated solution is equipped in generator, the top outlet of generator is connected with the inlet of condenser by pipeline, the outlet of condenser is connected with the inlet of evaporator by pipeline through throttle valve A, the outlet of evaporator is connected with the inlet of absorber by pipeline, ion compound dilute solution is equipped in absorber, the outlet of absorber is connected with the inlet of generator by pipeline through solution pump, the bottom outlet of generator is connected with absorber through throttle valve B by pipeline;The hygroscopic exothermic reaction of ion compound is combined with metal hydride compressor, hydrogen is released after hydrogen release bottle heating, the compression release of hydrogen is realized;Hydrogen is absorbed after hydrogen absorption bottle cooling, the replenishment of hydrogen is realized, hydrogen release bottle can be connected fuel cell, hydrogen is provided to fuel cell and generates electricity.

The invention relates to a compact first-class lithium bromide absorption heat pump unit for preparing a high-temperature heat source. The compact first-class lithium bromide absorption heat pump unit comprises a generator A, a condenser A, a generator B, a condenser B, an evaporator A, an absorber A, an evaporator B, an absorber B, a heat exchanger A, a heat exchanger B, a solution pump A, a refrigerant pump A, a solution pump B, a refrigerant pump B, an internal circulation water pump and an internal circulation medium-temperature hot water system. Two barrels are adopted to form four cavities, the structure is compact, the evaporator A and the absorber A transfer recycled low-temperature waste heat source heat to internal circulation medium-temperature hot water, the internal circulation medium-temperature hot water enables the evaporation temperature of the evaporator B to be increased and the absorption pressure to be increased, and the absorber B produces a high-temperature heat source; as a single machine is miniaturized, the length, width and height of the unit are small, the loading capacity of the generator and the condenser is improved, the thermal displacement is very small, the high-temperature and high-pressure design conditions can be met without increasing the material cost, the generating pressure and the condensing temperature are increased, and a high-temperature heat source can be produced. The unit improves the comprehensive utilization rate of energy, can produce a high-temperature heat source, expands the application field, and is suitable for occasions with miniaturized single machines.

An air source absorption heat pump system comprises a refrigerant circulation pipeline and an absorbent circulation pipeline, a generator, a condenser, an evaporator and an absorber are sequentially installed and connected on the refrigerant circulation pipeline, and a first throttling device is arranged between the condenser and the evaporator; the absorbent circulating pipeline is arranged between the generator and the absorber; a solution pipeline is arranged between the absorber and the generator, and a solution pump is arranged on the solution pipeline. By the adoption of the technical scheme, driving energy of the gas heat pump is natural gas environment-friendly energy, low-level heat energy (such as heat contained in air) is converted into available high-level heat energy, the energy utilization rate is increased, and the influence of system work on air quality is reduced.

The invention relates to the technical field of absorption systems, and discloses an absorption type combined cooling and heating system driven by renewable energy sources. The absorption type combined cooling and heating system driven by the renewable energy sources comprises solution circulation, ammonia working medium circulation, a fuel gas-flue gas process, heat supply load circulation, cold supply load circulation, solar heat collection heat conduction oil circulation and generation heat conduction oil circulation. According to the renewable energy source driven absorption type combined cooling and heating system, renewable energy source driving is introduced, the cooling and heating requirements are met, combined energy supply of cooling and heating is achieved through one device, the utilization rate of renewable energy sources is increased, and the energy consumption is reduced. And then when the absorption type combined cooling and heating system operates, refrigeration temperature control, absorber liquid level control, generation temperature control, heat supply temperature control and heat source power control can be adopted to control the absorption type combined cooling and heating system driven by renewable energy sources, and the system can automatically adjust and efficiently operate along with environment temperature changes and heat supply power setting.

A generator (120), comprising: a housing (200), and a housing accommodating cavity (303) defined by the housing (200). The housing accommodating cavity (303) comprises an upper accommodating cavity portion (304), a middle accommodating cavity portion (306) and a lower accommodating cavity portion (308), wherein a first heat-exchange tube group (382) is arranged in the upper accommodating cavity portion (304), and is immersed in an upper solution; a second heat-exchange tube group (384) is arranged in the lower accommodating cavity portion (308); and a distributor (307) is arranged in the middle accommodating cavity portion (306), and the distributor (307) receives the upper solution from the upper accommodating cavity portion (304) and distributes the upper solution discharged from the upper accommodating cavity portion (304) onto the second heat-exchange tube group (384). By means of dividing a heat-exchange tube group into two heat-exchange tube groups, the height of the upper flooded heat-exchange tube group (382) is decreased, thereby reducing the influence of hydrostatic pressure on a bottom pipeline; and the lower falling-film heat-exchange tube group (384) is far away from a high-temperature heat source inlet, which effectively prevents the solution from crystallizing at the falling-film heat-exchange tube group due to an excessive temperature difference.

The invention discloses a refrigeration system, comprising: a generator, provided with a liquid storage chamber for accommodating liquid ammonia and sodium nitrate solution, the generator being connected to a heat source, and an exhaust pipe being arranged at the upper end of the generator; a condenser, provided with a condensation chamber, and an inlet of the condensation chamber being connected to the exhaust pipe; an evaporator, provided with an evaporation chamber, and an inlet of the evaporation chamber being connected to an outlet of the condensation chamber through a liquid inlet pipe; an expansion valve being arranged on the liquid inlet pipe; an absorber, located below the generator, the absorber having an absorption chamber for accommodating sodium nitrate solution, an upper part of the absorption chamber being connected to an outlet of the evaporation chamber through a gas delivery pipe, the absorber being provided with a liquid delivery pipe and a reflux pipe, and the reflux pipe being provided with a reflux pump; a lithium bromide water refrigerator, a first cold water pipe and a second cold water pipe being arranged at a cold water output end of the lithium bromide water refrigerator, the first cold water pipe being connected to the condenser to cool the gas in the condensation chamber, and the second cold water pipe being connected to the absorber to cool the sodium nitrate solution in the absorption chamber.

The generator (120) includes a housing (200) and a housing receiving cavity (303) defined by the housing (200). The housing cavity (303) includes an upper cavity portion (304), a middle cavity portion (306), and a lower cavity portion (308), a first group of heat exchange tubes (382) disposed in the upper cavity portion (304) and immersed in the upper solution, a second group of heat exchange tubes (384) disposed in the lower cavity portion (308), and a dispenser (307) disposed in the middle cavity portion (306), which receives the upper solution from the upper cavity portion (304) and dispenses the upper solution ejected from the upper cavity portion (304) onto the second group of heat exchange tubes (384). By dividing the heat exchange tube bank into two heat exchange tube banks, the height of the upper flooded heat exchange tube bank (382) is reduced, thereby reducing the influence of hydrostatic pressure on the bottom pipe line, and the lower falling film heat exchange tube bank (384) is separated from the high temperature heat source inlet, which effectively prevents the solution from crystallizing at the falling film heat exchange tube bank due to the excessive temperature difference.

The invention relates to a first-class lithium bromide absorption heat pump unit for preparing a high-temperature heat source. Comprising a generator A, a condenser A, a generator B, a condenser B, an evaporator A, an absorber A, an evaporator B, an absorber B, a heat exchanger A, a heat exchanger B, a solution pump A, a refrigerant pump A, a solution pump B, a refrigerant pump B, an internal circulation water pump, an internal circulation medium-temperature hot water system, pipelines, valves and the like, recycled low-temperature waste heat source heat is transferred to internal circulation medium-temperature hot water through the evaporator A and the absorber A, the evaporation temperature of the evaporator B is increased through the internal circulation medium-temperature hot water, the absorption pressure is increased, and the absorber B produces a high-temperature heat source; the generator and the condenser adopt independent cylinders, the pressure bearing capacity and the thermal displacement capacity of the unit are improved, the generating pressure and the condensing temperature are increased, and a high-temperature heat source can be produced. The unit expands the application field, realizes single-machine ultra-large type, reduces the total investment, and improves the comprehensive utilization rate of energy.

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 plate-type heat exchange module comprises a plurality of heat exchange plate sets, each heat exchange plate set is formed by assembling two heat exchange plates, a first heat exchange space is formed in the two heat exchange plates, a liquid groove is formed in the plate at one end of the upper end and the lower end of each heat exchange plate set, and the heat exchange plate sets are provided with liquid pipes connected to the outside. The external liquid pipe is connected with the liquid tank, the other end of the upper end and the lower end of each heat exchange plate set is provided with a steam port, the upper face, the lower face, the front face and the rear face of each heat exchange plate set are connected with sealing pressing plates, second heat exchange spaces are formed outside the sealing pressing plates and the heat exchange plate sets, and openable water chambers are arranged on the two sides of the plate type heat exchange module and communicated with the second heat exchange spaces. According to the invention, miniaturization and modularization of the absorption heat exchange unit can be realized, the production period can be greatly shortened, the transportation cost is reduced, and the external heat source side can be conveniently cleaned through the openable water chambers on the two sides in case of scaling or filth blockage.

An electric lithium bromide absorption air conditioning unit and an energy storage refrigeration and heating system, including an electric lithium bromide absorption air conditioning unit and an electric heat storage device; the electric lithium bromide absorption air refrigeration unit includes an electric heat generator; the electric heat generator includes an electric heating device and / or an heat storage and heat exchanging device, and a grid power supply; the electric heating storage device includes a heat storing and exchanging tank; the electric heating device is connected to the grid power supply. The generator used is an electric heating-type heat generator. By utilizing lithium bromide, it disrupts the conventional refrigeration compression cycle air conditioning system to address the global warming issue. This system can also give rise to independent energy storage cooling or heating solutions for grid-side energy storage projects, helping to solve the energy storage issues on the grid user side.

The present invention relates to a refrigerator, comprising at least two groups of absorption and evaporation systems connected in series; the evaporator and the absorber are connected so that the refrigerant vapor in the evaporator flows into the absorber; in at least two groups of absorption and evaporation systems, the absorber of the first group of absorption and evaporation systems is connected with the absorber of the second group of absorption and evaporation systems so that the absorbent solution in the first group of absorption and evaporation systems flows into the absorbent solution in the second group of absorption and evaporation systems; the absorber of the last group of absorption and evaporation systems is provided with a pipeline for cooling water circulation; the evaporator of the first group of absorption and evaporation systems is provided with a pipeline for external cold water circulation. By expanding the solution circulation concentration and circulation path, and by increasing the refrigerant circulation amount, the cooling water temperature used for cooling can be higher, and the heat source water temperature used for heating can be lower. At the same time, for heating and cooling, cooling water prepared by a cooling tower can be unnecessary, thereby improving energy utilization.

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.