61 results about "Regenerative heat exchanger" patented technology

The invention discloses a pressure storage and heat storage coupled regenerative heat pump power storage system and a regulation and control method thereof. The system is composed of an electric-power generation integrated unit, an energy storage compression and energy release expansion integrated unit, an energy storage expansion and energy release compression integrated unit, a high-temperature heat exchanger, a backheating heat exchanger, a cold energy absorption heat exchanger, a heat storage and cold storage storage tank, a high-pressure gas storage tank and the like. And an energy storage / energy release loop, a heat storage / heat release loop, a cold storage / cold release loop and a pressure heat coupling loop are formed by connecting pipelines. In the energy storage mode, the compressor unit is driven by electric energy to conduct multi-stage compression, and compression heat and expansion cold are stored in the high-temperature storage tank and the low-temperature storage tank correspondingly. In the energy release mode, the heat storage medium and the cold storage medium are sequentially released to supply heat or cold to the circulating working medium, and the expansion unit is driven to drive the generator to generate electricity. According to the method, bidirectional operation of energy storage and energy release is achieved through valve switching and circulation control, and power output and load change are adjusted within a second level through a pressure-heat coupling mechanism.

The invention discloses a cold, heat and electricity combined supply system device for hot dry rock. The system comprises a middle-deep layer geothermal heat exchanger, a geothermal source pressure pump, a steam turbine evaporator, an ORC and Kalina steam turbine power generation device, a hot water type absorption unit, a steam turbine condenser, a steam turbine liquid supply pump, a warming heat exchanger, a backheating heat exchanger, a living water heat exchanger, a heat supply pump, a cold circulating pump, a plurality of electric control reversing valves, a user side and a power distribution control device. The system extracts hot dry rock heat energy through the geothermal heat exchanger to drive the power generation device to generate power, and cold or heat is output through the absorption type unit. The warming heat exchanger and the backheating heat exchanger optimize a working medium circulation path, the electric control reversing valve dynamically switches a refrigeration mode, a heating mode and a power generation mode, and the domestic water heat exchanger independently supplies domestic hot water. Efficient combined supply of cold, heat and electricity of geothermal energy is achieved, the problem that the working medium circulation efficiency is low during multi-mode switching is solved, the energy utilization rate is remarkably increased, the operation cost is reduced, and energy conservation and environment protection are achieved.

The invention discloses a device for preparing a molten carbon fertilizer through solid waste microwave pyrolysis and waste heat recovery, and belongs to the field of solid waste treatment and recycling. The device is composed of a pretreatment unit, a microwave pyrolysis unit, a gas-solid separation unit, a gas phase treatment unit, a solid phase treatment unit and a waste heat circulation unit, solid waste enters a microwave rotary kiln after being dried and crushed, a magnetron generates microwave anaerobic pyrolysis under photovoltaic power supply, and a high-temperature gas-solid product is generated; the cyclone separator is used for separating flue gas from solid carbon, the flue gas is condensed to obtain pyrolytic oil and gas, and waste heat of medium-temperature flue gas is recovered through the heat accumulating type heat exchanger for drying; cooling the solid carbon through a heat pipe heat exchanger, recovering waste heat and liquefying urea, and mixing the solid carbon and the urea in a stirring melting pool to prepare a molten carbon fertilizer; and the waste heat backflow fan sends the carbon waste heat back to the drying chamber. The system is driven by green electricity, gas and solid phase waste heat is recovered through double paths, solid waste efficient pyrolysis-product high value-energy self-circulation is achieved, and energy consumption and carbon emission are reduced.

To provide a heat exchanger system.SOLUTION: In one aspect, the disclosed embodiments relate to a system. The system may include a turbine and a regenerative heat exchanger system. The regenerative heat exchanger system is configured to receive the exhaust gas from the turbine. The regenerative heat exchanger system may include a pre-cooling section for cooling the exhaust gas, a primary heating section for receiving the cooled exhaust gas, and a secondary heating section for receiving the cooled exhaust gas.SELECTED DRAWING: None

A high-pressure side of a compressor is connected with a first port of a first three-way valve, a second port of the first three-way valve is connected with an external air cooling heat exchanger, and a third port of the first three-way valve is connected with a second three-way valve; the outside-vehicle air cooling heat exchanger is connected with a heating expansion valve, and the other end of the heating expansion valve is connected to a backheating heat exchanger; first one-way valves are arranged at two ends of the heating expansion valve in parallel; the other end of the in-vehicle air cooling heat exchanger is connected with a refrigeration expansion valve; two ends of the refrigeration expansion valve are connected in parallel with a second one-way valve; the first end of the in-vehicle water-side heat exchanger is connected with a third port of the second three-way valve, the second end and the third end of the in-vehicle water-side heat exchanger are connected with the in-vehicle water inlet and the in-vehicle water outlet respectively, and the fourth end of the in-vehicle water-side heat exchanger is connected with the in-vehicle water-side expansion valve. On one hand, the heat exchange efficiency can be improved, the boundary size of the evaporation box is reduced, and on the other hand, the structure is easy to install, good in universality and suitable for installation and arrangement requirements of different vehicle types.

The utility model provides a thermoelectric conversion type waste heat regeneration heat exchanger, which belongs to the technical field of waste heat regeneration heat exchangers and comprises a heat exchanger support, the side of the heat exchanger support is fixedly connected with a heat exchanger main body, a heat exchange tube assembly is mounted in the heat exchanger main body and comprises a functional part, and the functional part is fixedly connected with the heat exchanger main body. The functional part is used for recovering waste heat to produce electric energy, and the insulating heat conduction structure part is used for transferring heat of a high-temperature heat source to the functional part and meanwhile avoiding electrical short circuit between the functional part and the heat source. According to the utility model, waste heat recovery is realized, electric energy can be generated, extra electric power support is provided for the data center, the actual demand of the data center in the aspect of energy management is effectively met, the practical value is higher, and meanwhile, efficient energy conversion and transmission are realized, so that the product can operate efficiently in the actual application, and the energy utilization rate is improved. And the functions of waste heat recovery and electric energy regeneration are practically exerted.

The present invention belongs to the field of energy saving, environmental protection, emission reduction and PVC powder quality improvement, and specifically relates to a VC polymerization tail gas recovery system. The VC polymerization tail gas recovery system includes a recovery gas buffer tank, two parallel recovery filters, a rotary discharge valve, at least one discharge centrifugal pump, at least one compressor, a desalted water pipeline, a stripping pipeline, an evaporative condenser, a monomer buffer tank, at least one delivery pump, at least one safety tank, a regeneration gas heat exchanger, etc. The present invention discharges non-condensable gas with a VC content of less than 8mg / m 3 , meeting the 10mg / m specified in the "Emission Standard of Pollutants for Caustic Soda and Polyvinyl Chloride Industry" GB15581-2016 3 ; The indicators of PVC resin in the original polymerization system are better than those of PVC produced by the original process, and the "fish eye" indicator is reduced by 6-10 / 400cm. 2 ; Taking a 200,000-ton PVC plant as an example, the ice machine load is reduced by about 7.5*10 5 Kcal / h, saving 858 tons of standard coal per year; therefore, this technology is advanced, reliable and safe in terms of process, product quality and safety.

The utility model belongs to the technical field of air treatment equipment, and relates to a rotating wheel dehumidification clean area air conditioner purification system which comprises a rotating wheel dehumidifier, a regeneration area and a dehumidification area are arranged in the rotating wheel dehumidifier, the regeneration area is communicated with a regeneration circulating system, the dehumidification area is communicated with a dehumidification circulating system, and the dehumidification circulating system is communicated with a dehumidification circulating system. The regeneration cycle system comprises a regeneration fresh air channel, a regeneration exhaust channel, a regeneration heat exchanger, a regeneration fan and a regeneration heater, the regeneration heat exchanger is a heat pipe heat exchanger and comprises a cold side or a hot side, and the regeneration fresh air channel is sequentially communicated with the outside, the cold side of the regeneration heat exchanger, the regeneration heater and the inlet end of the regeneration area; and the regeneration exhaust channel is sequentially communicated with the outlet end of the regeneration area, the regeneration fan, the hot side of the regeneration heat exchanger and the outside. The rotating wheel dehumidification clean area air conditioner purification system provided by the utility model can recycle exhaust heat, improve the energy utilization rate and reduce waste.

This invention proposes a photovoltaic-driven compressed air energy storage system with multi-stage compression and segmented heat recovery. The system includes: photovoltaic modules, a multi-stage compressor unit, a thermal storage heat exchanger, a high-temperature thermal storage tank, a low-temperature thermal storage tank, a regenerative heat exchanger, an expander, and an ORC unit. The photovoltaic modules supply power to the multi-stage compressor unit, which compresses the gas and stores it in the gas storage tank. Part of the heat generated is stored in the high-temperature contact tank and the low-temperature thermal storage tank through two thermal storage heat exchangers. The gas storage tank then feeds the high-pressure gas into the expander for expansion and work, driving a generator to produce electricity. Part of the waste heat from the expander's exhaust gas is fed into the ORC unit for secondary power generation, realizing waste heat utilization. This invention achieves efficient utilization and long-term energy storage of photovoltaic energy, significantly improving energy efficiency and operational safety, and solving the problems of low efficiency, large heat loss, and insufficient regulation capacity in traditional compressed air energy storage systems.

The utility model discloses a high-energy-efficiency cooling liquid loop system with a heat regenerator, which relates to the technical field of cooling systems and comprises a cooling liquid loop, a battery cooler, a battery pack and at least one group of refrigerant loops. The cooling liquid loop and the refrigerant loop pass through the battery cooler, the refrigerant loop comprises a regenerative heat exchanger and an expansion valve, one set of output ends of the battery cooler is connected with one set of input ends of the regenerative heat exchanger, and an air cooling assembly is installed between one set of output ends of the regenerative heat exchanger and the other set of input ends of the regenerative heat exchanger. And the expansion valve is arranged between the other group of output ends of the regenerative heat exchanger and one group of input ends of the battery cooler. The heat exchange regenerator can be used for further cooling by using a low-pressure and low-temperature refrigerant at an outlet of the battery cooler before the refrigerant is cooled by the air-cooled condenser and is completely or incompletely liquefied from a gas state, so that the degree of supercooling is improved; and after the two-phase refrigerant exchanges heat with the cooling liquid through the battery cooler, the heat exchange regenerator uses the medium-temperature and high-pressure liquid refrigerant after the air-cooled condenser to improve the superheat degree.

The utility model discloses a nuclear reactor heat exchanger which comprises a shell, a first heat exchange tube unit and a second heat exchange tube unit, wherein the first heat exchange tube unit and the second heat exchange tube unit are arranged in the shell; a first water inlet, a first water outlet and a third water outlet are formed in the first end part of the shell, a second water inlet and a second water outlet are formed in the side wall of the shell, and a third water inlet is formed in the second end part of the shell; the first water inlet, the first heat exchange tube unit and the first water outlet are sequentially communicated to form a first heat exchange channel; the second water inlet, the second heat exchange tube unit and the second water outlet are sequentially communicated to form a second heat exchange channel; the third water inlet is communicated with the third water outlet through the inner space of the shell. The heat exchanger can integrate the functions of a conventional pressurized water reactor nuclear power station downflow heat exchanger and a regenerative heat exchanger, is applied to a conventional pressurized water reactor nuclear power station chemical and volume control system to replace the downflow heat exchanger and the regenerative heat exchanger, simplifies the system design, and saves the space cost.

The application provides a reversing-coupled Stirling power system, a design method and an operation method, comprising two sets of Stirling power subsystems; a heat side channel and a cold side channel are arranged in a regenerative heat exchanger, the heat side channel is specially used for containing regenerative heat-releasing working medium, the cold side channel is specially used for containing regenerative heat-releasing working medium, the heat side channel and the cold side channel respectively form a stable temperature gradient therein, the pipeline life is improved, and the system safety is high; the Stirling power subsystem comprises a heater, a piston assembly and a cooler, a first end of the heater is connected with an expansion chamber, a first end of the cooler is connected with a compression chamber, through reversing switching, the two sets of Stirling power subsystems can switch the connection state with the heat side channel and the cold side channel, the two sets of Stirling power subsystems can use the same regenerative heat exchanger, and the heat side channel and the cold side channel therein can be efficiently switched to meet the demand of the Stirling power subsystem on the heat exchange area under different regenerative states.

The invention relates to a dose rate analysis method, which is applied to a regenerative heat exchanger of a chemical capacity system in a pressurized water reactor unit, and comprises the following steps: S1, generating a three-dimensional geometric model corresponding to the heat exchanger based on a CFD platform; s2, acquiring a source item nuclide corresponding to the pressurized water reactor unit, and establishing a form transformation mechanism model corresponding to the source item nuclide; s3, acquiring a target working condition corresponding to the pressurized water reactor unit, and setting a boundary condition and an initial condition of the three-dimensional geometric model; s4, performing grid division on the three-dimensional geometric model, and obtaining a nuclide deposition rate of the morphological transformation mechanism model according to the obtained grid to select a target grid; and S5, an MCNP model corresponding to the three-dimensional geometric model is established, and the dose rate of the preset part of the heat exchanger is obtained according to the MCNP model, the target grid and the form transformation mechanism model. By implementing the method, the dose rate field distribution in the heat exchanger can be accurately obtained, and the method is of great significance to safe and economical operation of a nuclear power unit.

The utility model provides a heat accumulating type heat exchange device, which comprises a tank body, first baffles and second baffles are installed on both sides of the tank body in sequence, an outer pipe is installed in the tank body, the outer periphery of the outer pipe and the inner wall of the tank body form a first cavity, an inner pipe is fixedly installed in the inner part of the outer pipe, the inner pipe and the outer pipe are fixedly connected through an annular plate, the outer periphery of the inner pipe and the inner periphery of the outer pipe and the left side of the annular plate form a second cavity, the inner periphery of the inner pipe is a third cavity, the first cavity and the third cavity are both provided with honeycomb heat accumulating plates, a plurality of flue gas inlets are formed in the first baffle and communicated with the first cavity, a flue gas outlet is formed in the first baffle and communicated with the third cavity, and a plurality of fuel gas outlets are formed in the first baffle and communicated with the second cavity. The utility model has the advantages of simple structure, ingenious design, prolonged residence time of flue gas and fuel gas in the tank body, sufficient heat exchange, sufficient preheating of fuel gas, better preheating effect, actual demand satisfaction, and suitability for promotion.

This refrigeration system is for cooling a heat medium for supplying cooling energy to an object of cooling, and comprises: a turbomachine comprising a turbine, a compressor, and an electric motor; a closed loop including a compressed fluid line for guiding a compressed fluid that has been compressed by the compressor to the turbine, and an expanded fluid line for guiding an expanded fluid that has been expanded by the turbine to the compressor; a cooler for cooling the compressed fluid flowing through the compressed fluid line; a heat medium cooler for transferring heat between the expanded fluid flowing through the expanded fluid line and the heat medium; a regenerative heat exchanger for transferring heat between the compressed fluid having passed through the cooler and the expanded fluid having passed through the heat medium cooler; and an electric motor cooling line for extracting the compressed fluid from between the cooler on the compressed fluid line and the regenerative heat exchanger, and supplying the compressed fluid to a casing accommodating the electric motor.

The invention relates to the technical field of heat pumps, and particularly discloses a heat pump system and a control method of the heat pump system.The system comprises a two-stage compressor, a four-way valve, an outdoor heat exchanger, an indoor heat exchanger, a heat exchanger, a first electronic expansion valve and a gas-liquid separator; a heat exchange main path and a first heat exchange branch path are formed in the heat pump system; due to the fact that the opening degree of at least one of the first electronic expansion valve and the second electronic expansion valve is adjusted based on the outdoor environment temperature and the air inlet temperature difference value between the inlet saturation temperature of the high-pressure cavity and the air suction port temperature, exhaust of the low-pressure cavity is cooled through the regenerative heat exchanger in the heat pump system; therefore, work of the two-stage compressor is reduced, and the exhaust temperature of the exhaust port of the two-stage compressor is effectively controlled.

The utility model provides an electrode boiler energy storage device, which belongs to the technical field of high-temperature heat storage and comprises an electrode steam boiler (1) and a normal-pressure heat storage tank (4), the normal-pressure heat storage tank (4) is connected with a heat exchanger (6), the electrode steam boiler (1) is further connected with a steam user (3), and when the heat exchanger (6) is a steam-water heat exchanger, the steam user (3) is connected with the electrode steam boiler (1). The heat exchanger (6) is connected with a steam outlet of the electrode steam boiler (1), when the heat exchanger (6) is a heat storage heat exchanger, the heat exchanger (6) is connected with an air compressor (7) through an air compressor (8), the heat exchanger (6) is connected with a regenerative heat exchanger (10) through a salt cavern (9), the regenerative heat exchanger (10) is connected with a turbine (11), the turbine (11) is connected with a power generator (12), and the power generator (12) is connected with a steam outlet of the electrode steam boiler (1). The combination of the normal-pressure heat storage tank and the electrode steam boiler is adopted, and the device is simple in structure, high in starting speed and low in cost.

The present invention discloses an energy-saving and clean environmental control and fuel tank inerting coupling system based on heat recovery, belonging to the field of aircraft airborne electromechanical systems. The present invention utilizes the recovered energy to drive a high-boost-ratio air centrifugal compressor to suck in external ram air and compress, heat up and boost the pressure to meet the requirements of the environmental control system for refrigeration, cabin pressurization, etc.; uses the cabin exhaust gas as the cold source of the regenerative heat exchanger to pre-cool the high-temperature and high-pressure gas; uses the cooling turbine to drive the compressor to boost the pressure of the oxygen-rich gas separated by the fuel tank inerting system to achieve cabin oxygenation. The present invention adopts a coupling method to fully recover and utilize the heat of the thermal protection system, without bleeding air from the engine, reducing the aircraft's compensation loss and improving the energy utilization rate; fully recovers and utilizes the waste gas discharged from the cabin, reduces the amount of ram air, reduces the aircraft drag and lightens the weight of the heat exchanger; the environmental control system adopts a three-stage self-cleaning filter, which can effectively prevent the deposition of virus suspensions and prevent the spread of epidemics.

This invention discloses an energy storage heat exchange process for high-temperature nitrogen and oxygen separation. Compressed air, heated to 500-1100°C, enters a high-temperature nitrogen and oxygen separator containing a perovskite ceramic gas separation membrane. The separated hot N2 / O2 is stored in a ceramic regenerative heat exchanger and used to heat the compressed air, collecting and recycling the heat. This effectively improves the energy consumption of the perovskite ceramic gas separation membrane in practical applications. Furthermore, by improving the ceramic heat storage material of the ceramic regenerative heat exchanger, the process is better adapted to the rapid cooling and heating conditions of the invention.

The invention relates to the technical field of nuclear power station temperature regulating valve control, in particular to a nuclear power station non-regenerative heat exchanger temperature regulating valve control method and system, and the method comprises the steps: 1, determining the highest temperature T1 and the lowest temperature T2 of cooling water of a cooling water heat exchanger; 2, determining normal operation of a heat exchange unit of the non-regenerative heat exchanger; 3, when the cooling water temperature of the cooling water heat exchanger is reduced from the highest temperature to the lowest temperature, the temperature and flow change of the cooling water of the non-regenerative heat exchanger is measured; and 4, setting a temperature comparison value, a critical set value and a temperature set value of the control unit. According to the method, the temperature comparison value, the critical set value and the temperature set value of the control unit are obtained through measurement, only control logic in a control system needs to be adjusted, equipment does not need to be additionally arranged on a process system, and the use cost is low.

The air conditioner comprises a backheating heat exchanger, a backheating electronic expansion valve and a backheating switch, and the backheating heat exchanger comprises a first pipeline connected between an outdoor heat exchanger and an indoor heat exchanger and a second pipeline connected between a four-way valve and an air return opening of a compressor; the regenerative electronic expansion valve is connected in series with the second pipeline; the first parallel branch is connected between the four-way valve and an air return port of the compressor; the regenerative switch is used for connecting or disconnecting the first parallel branch; the controller is used for controlling the backheating switch to be switched off and adjusting the opening degree of the backheating electronic expansion valve or controlling the backheating switch to be switched on and the backheating electronic expansion valve to be switched off. The high-pressure side refrigerant continues to release heat in the backheating heat exchanger, the supercooling degree is increased, flash evaporation is prevented, the capacity of the indoor unit is improved, and meanwhile throttling abnormal noise is avoided. The low-pressure side refrigerant continues to suck air in the backheating heat exchanger, the air suction superheat degree is increased, and the problem of compressor liquid impact is solved. The flow of refrigerant entering the regenerative heat exchanger is controlled through the regenerative electronic expansion valve, and the reliability of the compressor is guaranteed.

This invention discloses a zero-carbon power generation and green methanol synthesis system and method coupled with SOEC (Solar-Energy Integrated Circuit), belonging to the field of synergistic coupling technology of new energy and thermal power generation. The system includes fluctuating green electricity from a large-scale wind and solar new energy base, a supercritical steam-water thermal system of a thermal power plant, an oxygen-enriched combustion boiler in a coal-fired power plant, a CO2 condensation, purification, and capture unit, a high-temperature gas-steam regenerative heat exchanger, SOEC, a medium-temperature high-pressure oxygen buffer tank, a magnesium-based solid hydrogen storage device, a liquid CO2 buffer storage tank, a continuous green methanol synthesis tower, and a liquid methanol finished product storage and transportation tank. This invention can reduce the raw material cost of green methanol; it has relatively high combustion efficiency and can reduce the combustibles in boiler fly ash; it enables coal-fired power assets to become the thermal foundation supporting efficient hydrogen production technology, achieving integrated solar and thermal synergy, with better resource utilization and stability.

The present application relates to the technical field of coal gasification, and particularly relates to a system and method for preparing combustible gas by coal powder steam hydrogen-rich gasification, which comprises a gasification reactor, in which coal powder and high-temperature steam provided by a heat accumulating heat exchanger are reacted to produce hydrogen-rich fuel gas, the hydrogen-rich fuel gas is cooled by a heat exchanger and then enters a spray tower for secondary cooling to condense water vapor and release sensible heat and latent heat, the hydrogen-rich fuel gas is discharged from the spray tower, the heat released by the condensate water is recovered by the spray water provided by a flash tank to the spray tower, the condensate water and the spray water enter the flash tank again to be converted into steam, and the steam is absorbed by the heat exchanger to enter the heat accumulating heat exchanger after absorbing the sensible heat of the hydrogen-rich fuel gas, and high-temperature steam reaching the temperature of the coal powder gasification reaction is obtained; the present application uses high-temperature steam as a single gasification agent to participate in the coal powder gasification reaction, the high-temperature steam produced by the heat accumulating heat exchanger provides the required H element and reaction temperature for the gasification reaction, and the proportion of H2 in the hydrogen-rich fuel gas is increased.

A fuel cell system, a method of at least partially cracking a fuel gas in a fuel cell system, and a method of starting a fuel cell system. The fuel cell system defines an anode inlet gas fluid flow path for delivering fuel gas from a first inlet of a recuperative heat exchanger to a first outlet of the recuperative heat exchanger, through a cracker, to a second inlet of the recuperative heat exchanger, through a first outlet of the recuperative heat exchanger, through a second outlet of the recuperative heat exchanger. The fuel cells are delivered to a second outlet of the recuperative heat exchanger and to an anode inlet of at least one fuel cell stack. The fuel cell system has a heat source configured to provide heat to the anode inlet gas fluid flow path between the first outlet of the regenerative heat exchanger and the second inlet of the regenerative heat exchanger. The recuperative heat exchanger is arranged to transfer heat from the at least partially cracked fuel gas at a relatively higher temperature from the cracker outlet to a fuel gas at a relatively lower temperature delivered between the first inlet and the first outlet of the recuperative heat exchanger.

A process for the low-temperature separation of a hydrocarbon gas entails obtaining a fuel gas and a fraction of C3 and higher. A stream of a hydrocarbon gas feedstock is cooled to partial condensation and separated to obtain a gas and a liquid phase, which is fed into an absorption column. The separated gas is then expanded and is separated in the absorption column to obtain a methane / ethane fraction and a gas condensate. Next, the methane / ethane fraction is separated into two streams, the first stream being fed to cool an absorption column reflux stream, and the second stream being fed to cool the gas feedstock. The first and second streams are combined, compressed and cooled and then drawn off as a marketable product. The gas condensate is fed into the upper part of a fractionating column to obtain de-ethanization gas and a fraction of C3 and higher. The de-ethanization gas is separated into two streams, the first stream being fed after complete condensation in a regenerative heat exchanger into the upper part of the absorption column as reflux, and the second stream being fed into the lower part of the absorption column. The technical result is that of providing more distinct separation of a hydrocarbon gas into a fuel fraction and a fraction of hydrocarbons of C3 and higher.

The invention relates to a method for producing hydrogen from ammonia and a device for implementing the same. The liquid ammonia raw material is heated, evaporated and overheated in a coil pipe of the regenerative heat exchanger. A gaseous ammonia raw material is fed into an ammonia cracking reactor, a generated nitrogen and hydrogen mixture is cooled by an air cooler, and then hydrogen is recovered. The liquid ammonia fuel is heated, evaporated and overheated. The gaseous ammonia fuel is mixed with tail gas generated by hydrogen recovery, and generated fuel gas and hot air are sent into an ammonia cracking reactor together. The evaporation and overheating of ammonia feedstock and ammonia fuel are carried out in an ammonia cracking reactor. And a fuel gas outlet of the ammonia cracking reactor is connected to the regenerative heat exchanger. Coil pipes used for heating gaseous ammonia, fuel gas, air, heat transfer media and liquid ammonia are arranged in the regenerative heat exchanger in series. The fuel gas is then pressurized and cooled, condensed distilled water is recovered in a separator, and the dehydrated fuel gas is discharged to the atmosphere. The invention can increase the production efficiency of low-carbon hydrogen and can obtain distilled water as a byproduct.

A ventilation device with a through housing that is a duct for an air jet flow having the through housing connected to an opening of a building partition, with a stationary regenerative heat exchanger and a pumping section formed of a centrifugal fan of constant rotation direction and a main reversible air jet driver with an individual drive arranged in series inside the housing, characterized in that the heat exchanger is provided with a metallic pressure vessel with at least one heat exchange system attached to walls of the pressure vessel, wherein an interior of the pressure vessel is filled with a thermodynamic working agent and connected to a cyclic discrete pressure control system of the working agent.

To suppress deterioration of capacity of a refrigeration cycle device by preventing residence of a refrigerant in a heat storage heat exchanger and thus preventing reduction of a refrigerant amount circulating in a refrigerant circuit to the extent possible in the refrigeration cycle device with the heat storage heat exchanger.SOLUTION: A refrigeration cycle device includes: a refrigerant circuit C having a compressor 1 that compresses a refrigerant, an indoor heat exchanger 2 that exchanges heat between indoor air and the refrigerant, an outdoor heat exchanger 3 that exchanges heat between outdoor air and the refrigerant, a heat storage heat exchanger 4 that exchanges heat between a thermal storage medium and the refrigerant and an expansion valve 5 of which opening can be adjusted; a heat storage temperature sensor HS for detecting a heat storage temperature that is a temperature of the heat storage heat exchanger 4; and a control device 7 that controls the expansion valve 5. The control device 7 executes residence prevention control for adjusting the opening of the expansion valve so as to cause the refrigerant residing inside the heat storage heat exchanger 4 to flow out to outside of the heat storage heat exchanger 4 on the basis of the heat storage temperature during a heating operation.SELECTED DRAWING: Figure 4

A support structure for a rotary regenerative heat exchanger includes an upper section, a lower section, and a plurality of support members. The upper section includes an upper ring having a first exterior surface, an upper hub and at least three upper spokes each extending between and secured at respective ends thereof to the upper ring and the upper hub. Each of the plurality of support members are fixedly secured, directly or indirectly, to the upper ring and the lower section. An annular space is between the upper ring and the lower ring, which is configured to receive compartments of a rotor assembly. The upper hub, the upper spokes and the support members cooperate to provide rigidity to the support structure by cooperating to support and transmit the weight of the upper spokes, the upper ring and the upper hub to the lower section.

The refrigerator unit aims to reduce the size of the device and improve cooling efficiency. [Solution] The system comprises a compressor unit having a compressor and an expander driven by the drive shaft of a drive device, a first cooler that cools high-pressure refrigerant gas compressed by the compressor and sends it to the expander, a second cooler that cools an object to be cooled with low-pressure refrigerant gas from which expansion energy has been recovered by the expander and returns it to the compressor, and a regenerative heat exchanger that exchanges heat between the refrigerant gas sent from the first cooler to the expander and the refrigerant gas returned from the second cooler to the compressor, and the compressor unit and the regenerative heat exchanger are arranged facing each other in the vertical direction.