83results 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.

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.

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.

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 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 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.

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 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.

The present invention discloses a solar-driven mixed refrigerant two-stage separation low-temperature refrigeration method and refrigeration system, wherein the superheated mixed refrigerant vapor discharged from the generator enters the ejector assembly as the working fluid, and the high-pressure superheated refrigerant vapor discharged from the ejector assembly is cooled and lowered in the first regenerator and then enters the condenser to realize partial condensation of the mixed refrigerant to form a gas-liquid two-phase mixture, and the gas-liquid two-phase mixture flows into the second regenerator and is further cooled so that the low-boiling-point component in the gas phase is partially condensed into liquid, and enters the two-stage gas-liquid separator unit for a flash separation step; this solution improves the purity of the low-boiling-point component through multi-stage condensation and graded condensation technology, thereby obtaining a lower refrigeration temperature, and improves the system energy efficiency ratio through the cascade utilization of cooling capacity.

The present invention provides a two-stage absorption-compression heat-coupled heat pump system and operating method, comprising a compression heat pump sub-circulation system comprising a compressor, a compression cycle condenser, and a compression cycle evaporator, the compressor, multiple compression cycle condensers, and compression cycle evaporators being sequentially connected by pipelines; and a two-stage absorption heat pump sub-circulation system comprising a high-pressure absorber, a low-pressure absorber, a generator, a solution heat recovery device, an absorption cycle condenser, and an absorption cycle low-pressure evaporator. By providing the compression heat pump sub-circulation system and the two-stage absorption heat pump sub-circulation system, the temperature rise capability of the compression heat pump and the efficiency of the two-stage absorption heat pump are improved. This system also provides an efficient circulation method for raising the temperature of low-grade heat sources and recovering waste heat, and helps improve the efficiency of waste heat recovery.

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. The absorber is provided with a dilute solution pipeline which is communicated with the generator through a solution pump and a solution heat exchanger, the generator is provided with a concentrated solution pipeline which is communicated with the absorber through the solution heat exchanger, the generator is further provided with a refrigerant steam channel which is communicated with the condenser through a compressor, a high-temperature heat exchanger and an expansion machine, and the condenser is further provided with a refrigerant liquid pipeline which is communicated with the evaporator through a throttling valve. The evaporator is communicated with the absorber through a refrigerant steam channel; the absorber and the condenser are communicated with the outside through heated medium channels respectively, 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.

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. The absorber is provided with a dilute solution pipeline which is communicated with the generator through a solution pump and a solution heat exchanger, the generator is further provided with a concentrated solution pipeline which is communicated with the absorber through the solution heat exchanger, the generator is further provided with a refrigerant steam channel which is communicated with the condenser, and the condenser is further provided with a refrigerant liquid pipeline which is communicated with the evaporator through a throttling valve. The evaporator communicates with the absorber through a refrigerant steam channel, a compressor, a high-temperature heat exchanger and an expansion machine. The absorber and the condenser are communicated with the outside through heated medium channels respectively, 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.

This invention discloses a refrigeration system employing dual ejectors, relating to the field of compression refrigeration technology. The system includes a condenser, a working fluid pump, a generator, a two-phase ejector, a steam ejector, a gas-liquid separator, a scroll compressor, and an evaporator. The condenser outlet is connected to the working fluid pump inlet, the working fluid pump outlet is connected to both the generator inlet and the primary flow inlet of the two-phase ejector, the generator outlet is connected to the primary flow inlet of the steam ejector, the two-phase ejector outlet is connected to the gas-liquid separator inlet, the gas outlet of the gas-liquid separator is connected to the scroll compressor inlet, the liquid outlet of the gas-liquid separator is connected to the evaporator inlet, the evaporator outlet is connected to the secondary flow inlet of the two-phase ejector, the scroll compressor outlet is connected to the secondary flow inlet of the steam ejector, and the steam ejector outlet is connected to the condenser inlet. This invention improves the efficiency and performance of the entire system, thereby achieving higher operational efficiency.

The invention discloses a combined cooling and heating system based on an absorption technology, which relates to the technical field of combined cooling and heating and comprises a high-temperature waste gas system, an absorption heat supply system and an absorption refrigeration system. The heat exchange intensity is improved by installing the absorption type large-temperature-difference heat generating unit, the recovery temperature of a heat supply pile is reduced, the energy transmission capacity of a pipe network is improved, and the overall heat supply performance can be improved. By installing the absorption type refrigerating system, when heat supply needs do not exist in summer or the heat supply load is low, generated hot water is used for driving the absorption type refrigerator to conduct refrigeration, centralized cooling is achieved, the use efficiency can be improved, and the economic benefits can be improved. Due to the fact that the overall heat supply and cold supply have large load fluctuation in different time periods, the heat storage body and the cold storage body are added, the system load can be well adjusted, the load adjusting pressure is relieved, meanwhile, the system is prevented from being overheated and overcooled, and the starting speed and the adjusting reaction capacity of the system are improved.

The invention relates to the technical field of high-temperature heat pumps, in particular to an absorption and compression medium-high temperature heat pump system which comprises a medium-temperature output subsystem and a high-temperature output subsystem. The medium-temperature output subsystem comprises a low-pressure absorber, a second liquid pump, a second solution throttle valve, a first heat exchanger, a medium-pressure generator and a condenser which are connected; an independent medium-temperature output loop is constructed by additionally arranging a low-pressure absorber, a medium-pressure generator, a first heat exchanger and other core components, and output of high-temperature steam of 150 DEG C or above and medium-temperature hot water of about 60 DEG C can be achieved at the same time; the high-temperature loop is responsible for outputting high-temperature steam, the medium-temperature loop is responsible for outputting medium-temperature hot water, the heat exchange temperature difference of cold and hot fluid is reduced through hierarchical design, and irreversible loss is reduced; through modular integration of the high-temperature output subsystem and the medium-temperature output subsystem, only a small number of components such as the low-pressure absorber, the medium-pressure generator and the first heat exchanger are additionally arranged, the double-temperature output requirement can be met at the same time, the number of heat exchange equipment, valves and pipelines is reduced, the structure is simplified, and the cost is reduced.

The utility model relates to a water mixing technology lithium bromide absorption heat exchange system with a pressure isolating device, which is characterized in that primary network hot water from a primary network hot water pipeline system enters and exits from the pressure isolating device and then returns to the primary network hot water pipeline system, and secondary network hot water from a secondary network hot water pipeline system is divided into two paths in parallel, the first path flows through the absorber and the condenser in parallel, in series or in series-parallel connection, and the second path flows through the evaporator for cooling, then exchanges heat with primary network hot water through the pressure isolating device for heating, enters the generator as a driving heat source for cooling, and finally flows out through a secondary network hot water pipeline system after being mixed with the first path of secondary network hot water. According to the utility model, the large temperature difference of primary network hot water supply and return water can be maintained, the secondary network hot water supply temperature can be improved, the temperature difference of secondary network hot water supply and return water can be increased, the flow of secondary network hot water can be reduced, and the conveying energy consumption can be reduced without additionally consuming high-grade energy sources such as fuel gas and the like; and the construction cost of a heat supply pipe network is reduced while the heat supply quality is effectively improved.

The application provides a kind of ejector-driven diffusion-absorption heat transformer based on gravity liquid supply, comprising jet generator, solution separator, refrigerant condenser, refrigerant separator, refrigerant reservoir, evaporator, absorber, solution heat exchanger, solution reservoir, diffusion condenser, first diffusion reservoir, second diffusion reservoir, third diffusion reservoir, diffusion evaporator; the application simplifies diffusion generator device, and diffusion evaporator is directly inputted with heat source to make it occur, and the system circulation structure is greatly simplified by using heat-driven jet generator to realize refrigerant and solution pumping and separation; at the same time, without using electrically-driven pump, the problem of high-temperature solution corrosion is avoided, and the stability and reliability of system operation are improved. The application can utilize industrial waste heat, solar energy and geothermal energy and other low-grade heat energy, and has important significance for improving energy utilization rate.

The invention discloses an energy self-circulation system and belongs to the technical field of refrigeration. The lithium bromide refrigeration module comprises a generator, a multifunctional condenser, a refrigerant water throttling component, an evaporator and an absorber, the multifunctional condenser comprises a condensation chamber and a dilute solution preheating pipeline, and the evaporator comprises an evaporation chamber and a refrigeration pipe; a lithium bromide solution sequentially and circularly flows through the generator, the absorber and the dilute solution preheating pipeline, and refrigerant water sequentially flows through the generator, the condensation chamber, the refrigerant water throttling component, the evaporation chamber and the absorber; the indoor refrigeration module comprises a first evaporation flow channel, a second evaporation flow channel, a compressor, a condensation pipe and a refrigerant throttling component. A refrigerant sequentially and circularly flows through the first evaporation flow channel, the second evaporation flow channel, the compressor, the condensation pipe and the refrigerant throttling component. The photovoltaic power generation module comprises a photovoltaic panel, a cooling back plate, an inverter and a storage battery; the condensation pipe is arranged in the generator, the second evaporation flow channel is arranged in the condensation chamber, and the refrigeration pipe is connected with the cooling back plate. According to the invention, resource waste can be effectively avoided.

A condensation device for a carbon dioxide compression refrigeration system, and a carbon dioxide compression refrigeration system comprising same. The condensation device comprises: a generator, which receives gaseous carbon dioxide at a first temperature, and cools the gaseous carbon dioxide at the first temperature to gaseous carbon dioxide at a second temperature; an intermediate heat exchanger, which receives the gaseous carbon dioxide at the second temperature, and converts the gaseous carbon dioxide at the second temperature into gaseous carbon dioxide at a critical temperature; an evaporator, which enables the gaseous carbon dioxide at the critical temperature to be cooled by a refrigerant liquid to achieve condensation phase change, so that the gaseous carbon dioxide is converted into liquid carbon dioxide for discharge; a condenser; and an absorber.