30results about "Boilers/analysers" patented technology

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.

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.

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 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 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 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.

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 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.

Described herein are devices, systems, and methods for the capturing, transferring, and managing of heat energy. Phase change materials are used for their high thermal inertia property and large energy per volume property when operated near their solid-liquid transition point. Additionally, the systems, devices, and methods utilize one or more thermoelectric modules thermally coupled to a first side of the phase change material and one or more thermoelectric modules thermally coupled to a second side of the phase change material, opposite the first side. The use of the thermoelectric modules allows heat energy to be stored in, transferred within, or harvested from, the phase change material the thermoelectric modules couple to.

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.

The present application belongs to the field of refrigeration technology, and particularly relates to a composite generator and an absorption refrigeration system thereof. The composite generator comprises a generator body, a gas pocket and a liquid pocket are respectively arranged at the upper end and the lower end of the generator body, the gas pocket is arranged on the gaseous refrigerant outlet of the generator body, and the liquid pocket is arranged on the rich liquid inlet of the generator body. The composite generator can remove the liquid foam entrained in the resolved gaseous refrigerant, recycle part of the heat contained in the gaseous refrigerant, improve the evaporation efficiency of the evaporator, reduce the cooling capacity required by the condenser, use the high-pressure energy of the high-temperature and high-pressure lean liquid generated by the generator to pressurize the heat source entering the generator, improve the energy utilization rate of the unit, introduce the waste heat from the generator into the generator again, and preheat the rich liquid entering the generator, so as to improve the performance of the unit.

The invention belongs to the technical field of absorption refrigeration, and particularly relates to a generator with an efficient defoaming structure and an absorption refrigeration system.The generator comprises a generator body, and the defoaming structure is arranged above the generator body; the defoaming structure comprises a shell and a tube box, the tube box and the shell are fixedly connected through a connecting flange, and a vertical sieve plate module is fixedly connected in the shell and used for carrying out gas-liquid separation on a high-pressure gaseous refrigerant; a high-pressure gaseous refrigerant outlet is formed in the top of the shell, and a plurality of high-pressure gaseous refrigerant inlets are formed in the bottom of the shell; the absorption refrigeration system comprises an absorber, an evaporator, a condenser, a precooler, a GAX heat exchanger and a GVX heat exchanger, and further comprises the generator with the efficient defoaming structure. By arranging the vertical sieve plate type defoaming structure, a high-pressure gaseous refrigerant generated by the generator can be quickly and comprehensively subjected to defoaming treatment, so that the overall refrigeration efficiency of the refrigeration system is effectively improved.

This invention belongs to the field of absorption refrigeration technology, specifically a generator with a high-efficiency demisting structure and its absorption refrigeration system. It includes a generator body with a demisting structure on top. The demisting structure comprises a shell and a tube box, which are fixedly connected by a connecting flange. A vertical sieve plate module is fixedly connected inside the shell for gas-liquid separation of the high-pressure gaseous refrigerant. The top of the shell has a high-pressure gaseous refrigerant outlet, and the bottom of the shell has multiple high-pressure gaseous refrigerant inlets. The absorption refrigeration system includes an absorber, evaporator, condenser, precooler, GAX heat exchanger, and GVX heat exchanger, and also includes the aforementioned generator with a high-efficiency demisting structure. By setting up a vertical sieve plate demisting structure, this invention can quickly and comprehensively demistate the high-pressure gaseous refrigerant generated by the generator, thereby effectively improving the overall refrigeration efficiency of the refrigeration system.

This invention discloses an inclined falling film generator that enhances the heat and mass transfer of ammonia water through ultrasonic oscillation atomization coupling. The generator includes a housing containing several inclined falling film tubes. A downward-flowing falling film solution flows outside the tubes, while an upward-flowing heat source flows inside. The falling film solution is heated by the heat source, generating rising vapor that exits at the top of the generator. Multiple sets of ultrasonic atomizers and ultrasonic oscillators are spaced apart on the outside of each falling film tube. The high-frequency ultrasonic atomizers atomize the falling film solution into fine droplets, which exchange heat and mass with the rising vapor whose temperature decreases progressively along the falling film height, thus improving the purity of the generator outlet and reducing irreversible losses. The medium- and low-frequency ultrasonic oscillators enhance internal disturbances in the solution, strengthening heat and mass transfer. This invention effectively utilizes the stepped heat distribution of the rising vapor within the generator, improving the purity and quality of the generator outlet, enabling miniaturization of the generator equipment and improving system performance.

The present application relates to the field of refrigeration technology, and particularly relates to a geothermal energy combined with biomass energy coupling double heat source refrigeration drying system, which comprises a heat source system, a refrigeration cycle pipeline and a chilled water external circulation pipeline, wherein the heat source system comprises a biomass energy heat source and a geothermal water heat source; the refrigeration cycle pipeline is connected with the biomass energy heat source and the geothermal water heat source; the refrigeration cycle pipeline is provided with an evaporator; the chilled water external circulation pipeline is connected with the evaporator; the evaporator can absorb the heat of a medium to be cooled in the chilled water external circulation pipeline, and can generate chilled water; and the chilled water external circulation pipeline transmits the chilled water for external refrigeration. In the technical scheme of the present application, the geothermal energy and the biomass energy are used to provide heat energy for the refrigeration system, so as to reduce the refrigeration cost and reduce the carbon emission.

The invention relates to a lithium bromide absorption type water chilling unit efficiency increasing device and a working method thereof, the efficiency increasing device comprises an efficiency increasing evaporator used for receiving refrigerant water from a unit condenser, enabling the refrigerant water to be partially evaporated and generating low-temperature refrigerant water, and conveying the low-temperature refrigerant water to the unit evaporator; the synergistic absorber is used for absorbing water vapor from the synergistic evaporator through a dilute solution to form a super-dilute solution; cooling water is introduced into a heat exchange tube bundle in the synergistic absorber and is used for taking away heat generated in the absorption process; the synergistic generator is used for receiving and heating the heated super-dilute solution from the heat exchanger to boil the super-dilute solution and generate water vapor and a dilute solution; the water vapor is sent to a unit condenser, and the dilute solution enters a heat exchanger. The invention further discloses a working method of the lithium bromide absorption type water chilling unit efficiency improving device. The refrigerating capacity and the refrigerating energy efficiency ratio of the unit are greatly improved, and the utilization degree of a driving heat source is improved.

The application relates to a single-effect two-stage composite lithium bromide absorption refrigerating unit with supplementary combustion, and belongs to the technical field of air conditioning equipment. The unit comprises an evaporator, an absorber, a single-effect generator, a single-effect condenser, a two-stage low-pressure generator, a two-stage absorber, a two-stage high-pressure generator, a two-stage high-pressure condenser and a supplementary combustion generator. The unit can be driven by a waste heat driving heat source to drive the single-effect two-stage composite refrigerating unit, or can be driven by the supplementary combustion heat source to drive the unit to operate, so that the unit can provide stable refrigerating output when the waste heat driving heat source is insufficient or is not available.

The invention belongs to the field of electrolytic bath waste heat utilization, and particularly relates to a refrigerating system and method for refrigerating a hydrogen production electric appliance room through electrolytic bath waste heat. The refrigerating system comprises an absorber (1), a heat exchanger (3), a generator (4), a throttle valve (5), an electrolytic cell (7), a refrigerant loop (8), a condenser (9), an expansion valve (10), an evaporator (11) and a hydrogen production system electric appliance room (12), hydrogen production waste heat of the hydrogen production electrolytic cell is used for driving the adsorption type refrigerating system, cold energy is provided for the hydrogen production system electric appliance room, heat emission of the hydrogen production system is reduced, and meanwhile the energy consumption of the hydrogen production system is reduced. And extra power consumption for providing cold energy for the hydrogen production process is reduced, and comprehensive utilization of energy resources of the hydrogen production process is realized.

The invention relates to the technical field of heat exchange, and one embodiment of the invention provides a generator for an air source absorption type heat pump, which comprises a heat exchange tank, an upper solution bin, a lower solution bin and a heat pump, a liquid inlet pipe and a liquid outlet pipe are arranged on the two opposite side walls of the upper solution bin, an upper partition plate is arranged between the heat exchange pipe and the upper solution bin, a combustion cover is arranged in the insertion opening, a communication opening is formed in the upper end of the combustion cover, a U-shaped heat exchange pipe is inserted in the upper positioning hole, and a heated cavity is formed in the U-shaped heat exchange pipe. By means of the technical scheme, the problems that in the prior art, due to medium leakage caused by sealing failure, working medium losses are caused, the heat exchange efficiency of a heat pump system is reduced, energy consumption is increased, and impurities such as outside air and dust enter the generator through sealing gaps and can be mixed with media to form precipitates, and the sealing effect is poor are solved. Key channels such as a positioning hole and an air outlet hole of a heat exchange tube are blocked, a heating-overheating collaborative process is damaged, and even a generator is scrapped in a severe case.

The application relates to the refrigeration technical field, in particular to an intermediate-effect absorption refrigeration cycle system, which comprises a semi-effect cycle refrigeration pipeline and a single-effect cycle refrigeration pipeline; a pressure generator module of the semi-effect cycle refrigeration pipeline is connected with a medium-pressure generator of the single-effect cycle refrigeration pipeline, the medium-pressure generator is connected with a condensing assembly of the single-effect cycle refrigeration pipeline, and the condensing assembly is connected with the pressure generator module; the pressure generator module is used for heating refrigerant solution output by the condensing assembly to generate high-temperature refrigerant steam under the driving of a heat source, and the high-temperature refrigerant steam is transmitted to the medium-pressure generator to drive refrigeration of the single-effect cycle refrigeration pipeline, and medium-temperature refrigerant steam generated by the medium-pressure generator is transmitted to the condensing assembly. The high-temperature refrigerant steam generated in the semi-effect refrigeration cycle process is used for driving the single-effect refrigeration cycle, so that the semi-effect cycle efficiency is improved, the utilization gradient of the heat source of the basic cycle is increased, and the low-grade heat energy is fully utilized.

A vehicle having a refrigeration / ice-making unit includes an engine and a refrigeration / ice-making unit. The refrigerating / ice making unit comprises a generator, a gas-liquid separator, a condenser, a first liquid storage tank, a throttling element, an evaporator, an absorber and a solution pump. The generator comprises a heat exchange cavity allowing flue gas to circulate and a heat exchange pipe allowing refrigerant solution to circulate, the heat exchange pipe comprises a plurality of heat exchange units arranged in the first direction, each heat exchange unit comprises a first pipe section and a second pipe section, the first pipe sections extend in the first direction, and the second pipe sections are perpendicular to the first pipe sections; the two ends of each heat exchange unit are arranged in a staggered mode in the first direction, the second direction and the third direction. Through the first pipe section and the second pipe section, flue gas and a refrigerant solution form a mixed heat exchange channel of reverse flow and vertical cross flow, the heat exchange efficiency is improved, and the size of the generator is reduced.

The invention relates to an absorption type cold and hot dual-working-condition cascade system for medium and low temperature deep heat removal and an operation method thereof, and the system comprises a geothermal primary side heat removal unit, a dual heat pump cascade unit, a user side and a cooling tower. The geothermal primary side heat removal unit and the double-heat-pump cascade unit form a cooperative mode of series heat removal and cooling, series temperature rise and position lifting and multi-source parallel mixing, heating hot water of 60-80 DEG C and chilled water of 7 DEG C can be obtained at the same time, and double-working-condition operation of heat supply and refrigeration is provided. The second-class absorption heat pump directly takes the geothermal medium temperature as a driving heat source, and an electric compressor is not needed; the first-class absorption heat pump is cascaded with the first-class absorption heat pump, so that outlet water of a wellhead further releases heat, the recharge temperature is lowered to about 20 DEG C, and then recharge is performed, so that multiple heat use is realized; meanwhile, heat supply / freezing output required by a user is provided; through linkage of the valve and the circulating pump, working condition switching and energy distribution can be completed with low-power pump consumption, and the purposes of low power consumption and deep heat removal are achieved.

The invention discloses a combined supply system based on photovoltaic waste heat recovery and efficient refrigeration coupling, 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; a refrigerant of the heat source circulation module sequentially and circularly flows through the compressor, the condensation pipe, the refrigerant throttling component, the first evaporation flow channel and the second evaporation flow channel. 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 first evaporation flow channel is arranged in the condensation chamber, and the second evaporation flow channel is arranged in the cooling back plate. According to the invention, resource waste can be effectively avoided.

The utility model discloses a low-temperature waste heat utilization system of a trioxymethylene reaction system, which is characterized in that the bottom of a reactor is connected with a heater, the top of the reactor is connected with a condenser, a tube pass outlet of the condenser is connected with a dilute trioxymethylene storage tank, a shell pass outlet of the condenser is connected with a hot water tank, and the hot water tank is connected with a first inlet of a low-temperature waste heat utilization device; a shell pass outlet of the heater is connected with a second inlet of the low-temperature waste heat utilization device, a third inlet of the low-temperature waste heat utilization device is connected with a condensate water source, a hot water outlet of the low-temperature waste heat utilization device is connected with the condenser, and a steam outlet of the low-temperature waste heat utilization device is connected with the heater. The temperature of the part, passing through the condenser, of the gas phase of the reactor is obviously reduced, the consumption of circulating water used for cooling hot water from the condenser is greatly reduced, the pressure of the reactor is reduced, the unit consumption of trioxymethylene steam is reduced, the conversion rate of trioxymethylene is obviously increased, and the yield of the reactor is obviously increased. The device is of great significance in safe and stable operation, capacity utilization rate improvement and yield improvement.

This invention discloses an energy-efficient refrigeration unit and process for preventing cavitation in a vapor condensate pump, comprising: a high-pressure generator, a medium-pressure generator, a high-pressure evaporator, a vapor condensate pump, a hybrid power generation compressor, and refrigeration components. This application utilizes a high-pressure evaporator to absorb the heat from the saturated vapor condensate flowing from the high-pressure generator using high-pressure liquid refrigerant, transforming the saturated vapor condensate into a subcooled vapor condensate. This prevents cavitation when the condensate enters the vapor condensate pump, replacing the previous method of increasing the height difference between the generator and the vapor condensate pump. This reduces the cost of the unit's piping and also reduces the cost of ultra-high-altitude transportation. Furthermore, the heat contained in the saturated vapor condensate is converted into the pressure energy of the high-pressure gaseous refrigerant, which drives the hybrid power generation compressor to operate, converting it into electrical energy and the pressure energy of the low-pressure gaseous refrigerant. The electrical energy powers the solution pump, achieving deep utilization of the unit's internal energy and improving the unit's COP.

The invention provides an injection-absorption type combined heat and power supply system, and belongs to the technical field of combined heat and power supply. 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 condensate pipeline which is communicated with the steam generator through a booster pump. The steam generator communicates with the steam turbine through a high-pressure steam channel, the steam turbine communicates with a high-pressure steam inlet of the ejector through a steam extraction channel, the steam turbine communicates with a low-pressure steam inlet of the ejector through a steam exhaust channel, and the ejector communicates with the absorber through a medium-pressure refrigerant steam channel. The steam generator and the generator are further communicated with the outside through high-temperature heat medium channels respectively, the absorber and the condenser are further communicated with the outside through heated medium channels respectively, and the injection-absorption type combined heat and power system is formed.

The utility model provides an integral direct-fired generator and condenser structure. The integral direct-fired generator and condenser structure comprises a direct-fired generator furnace pipe, a direct-fired generator convection heat exchange component, an underwater staggered pore plate, a condenser water disc and a condenser heat transfer tube bundle which are arranged in a direct-fired generator-condenser shell from low to high; a lithium bromide solution is located on the inner side of the direct-fired generator-condenser shell and located between the direct-fired generator furnace pipe and the direct-fired generator convection heat exchange component; the underwater staggered pore plate, the condenser water tray and the condenser heat transfer tube bundle are positioned above the liquid level of the lithium bromide solution; the liquid blocking grid plate is arranged between the outer side of the condenser water disc and the direct combustion generator-condenser shell. The space from the liquid level in the direct-fired generator to the upper part of the shell is fully utilized; the underwater staggered pore plate can stabilize the boiling liquid level and is beneficial to reducing the gas-liquid separation height and the overall height of the direct combustion generation-condenser; due to the integrated structure, a condenser shell and a steam pocket are omitted, and the height and the width of the unit are reduced.

A marine waste heat-driven ammonia absorption refrigeration system and method belong to the field of marine energy conservation and absorption refrigeration technology. The system uses the low-temperature waste heat of the cylinder liner water (65℃-95℃) of the marine diesel engine as the driving heat source, employing a novel ammonia-salt working fluid pair. It forms an absorption refrigeration circuit consisting of a generator, condenser, throttle valve, evaporator, absorber, solution pump, and solution heat exchanger, and is equipped with a waste heat supply circuit and a cooling capacity output circuit, simultaneously providing cooling for the ship's air conditioning and refrigeration systems. The salt solute used in this invention has high solubility in ammonia and is non-volatile. The ammonia gas obtained from the solution heating and desorption is of high purity, eliminating the need for a distillation device. The system is compact, small in size, and low in cost, making it suitable for the space-constrained environment of ships. By replacing electric compression refrigeration with absorption refrigeration and using environmentally friendly ammonia refrigerant instead of high GWP refrigerants, it significantly reduces marine fuel consumption and carbon emissions. The system operates safely and stably, with high energy efficiency and waste heat utilization, meeting the needs of maritime emission reduction and ship refrigeration.