31 results about "Counter flow" patented technology

This utility model discloses a counter-flow cooling tower, including a cooling tower shell, a fan installed on the top of the cooling tower shell, and packing material inside the cooling tower shell. A disassembly and assembly mechanism is provided inside and at the front of the cooling tower shell. The disassembly and assembly mechanism includes a connecting plate fixedly connected to the front of the packing material, and a strip-shaped cylinder fixedly connected to the front of the connecting plate. Through the disassembly and assembly mechanism, utilizing the sliding cooperation between the connecting plate and the fixed square rod, and the guiding support of the slider for the packing material, the packing material can be directly pulled out or inserted along the fixed square rod, avoiding the cumbersome disassembly process of bolt tightening or custom clips in traditional structures. Simultaneously, the spring inside the strip-shaped cylinder, along with the buckle plate and the clip plate, forms an automatic locking structure. During replacement, only the buckle plate needs to be pressed and the clip plate slid, allowing disassembly and assembly to be completed without professional tools, significantly reducing downtime for maintenance.

To provide an apparatus (100) for thermal energy storage and conduction.SOLUTION: The apparatus (100) includes a thermal energy input device (1) having a bed of fluidizable solid particles received in a casing and exposed to a thermal energy source to function as a heat storage means, a heat exchange means (3) operating in counter-current flow and configured for exchange of thermal energy between a heated vector mass of the bed particles and a working fluid, a transport means (5) configured for supplying the vector mass of the bed particles from the device (1) to the heat exchange means (3) and for returning at least part of the vector mass to the device (1) downstream of the heat exchange means (3), and a control unit (10) associated with a parameter detection means (6).SELECTED DRAWING: Figure 4

A gas treatment component includes a cross-flow heat exchanger and a counter-flow heat exchanger arranged in series with the cross-flow heat exchanger. The cross-flow heat exchanger and the counter-flow heat exchanger each include a core having a stack of heat exchanger plates, and the heat exchanger plates of the cross-flow heat exchanger form first channels for a first gas flow passing the cross-flow heat exchanger and form second channels for a second gas flow passing the cross-flow heat exchanger. A first distance between neighbouring heat exchanger plates forming the first channels is smaller than a second distance between neighbouring heat exchanger plates forming the second channels. The cross-flow heat exchanger includes a second outlet for the second gas flow to leave the cross-flow heat exchanger and a deflector plate for deflecting a portion of the second gas flow leaving the cross-flow heat exchanger at the second outlet.

The utility model discloses a counter flow type cooling tower, which comprises a frame structure and a cooling tower body arranged on the frame structure, an air duct, a water collector, a water distribution system and a filler are sequentially arranged along the cooling tower body from top to bottom, a fan is arranged in the air duct, the filler comprises a filler layer with an S-wave-shaped surface, and the surface of the filler layer is provided with a water inlet and a water outlet. The wave crest and the wave trough of the S wave form are arc-shaped, and the extending direction of the S wave is consistent with the water flow direction and the air flow direction; according to the utility model, not only is the heat exchange efficiency higher, but also dirt, impurities or sediments are not easy to accumulate between wave crests and wave troughs of the filler, water flow blockage caused by blockage is avoided, and the cooling efficiency is ensured.

The utility model relates to the technical field of heat exchanger, propose a kind of stepped countercurrent subsection heat exchange device and the application of water heater thereof, stepped countercurrent subsection heat exchange device, including heat exchange main part, the heat exchange main part includes heat exchange area and heat exchange pipeline;Heat exchange area is equipped with several sections, several heat exchange areas are communicated with each other and mutually independent interval arrangement, and heat exchange pipeline connected with each other is equipped in each heat exchange area;Heat exchange pipeline is equipped with the heat insulation pipe for preventing the heat transfer between adjacent two heat exchange areas, to make the cold, hot fluid of each heat exchange area realize mutual non-interference in heat exchange process, and independent heat exchange, and each heat exchange area is formed heat transfer separation by heat insulation pipe, and the stepped temperature difference is formed between each heat exchange area.The subsection design of heat exchange area avoids the overall temperature difference homogenization problem caused by heat diffusion of traditional device, and heat exchange pipeline completes efficient heat exchange independently in each heat exchange area, improves overall heat exchange efficiency.

The invention provides a reverse flow type fog dissipation peak wet air cooler which comprises a box body, an evaporation coil pipe and a peak device are arranged in the box body, and the evaporation coil pipe and the peak device are arranged in a mutually isolated mode through a flow dividing partition plate arranged in the box body; a rhombic fog dissipation filler is arranged above the inner cavity of the box body, and a hot air channel of the rhombic fog dissipation filler is communicated with a cavity where the evaporation coil is located; a cold air channel of the rhombic fog dissipation filler is communicated with the cavity where the peak device is located, and the cold air channel is not communicated with or partially communicated with the cavity where the evaporation coil is located; through the synergistic effect of the counter-flow peak device and the evaporation coil, the heat exchange efficiency is remarkably improved in the high-temperature or load peak period, stable operation of the system is guaranteed, efficiency reduction caused by insufficient cooling is avoided, the rhombic fog dispersal filler and multi-channel airflow mixing design is adopted, wet and hot air and cold air are fully mixed for cooling, the relative humidity is reduced, and the energy consumption is reduced. Generation of rime fog is effectively inhibited, and environmental pollution and visual potential safety hazards are reduced.

The invention discloses a full-flow-channel zero-bypass concentric sleeve reverse flow type heat exchanger, and belongs to the technical field of heat exchange equipment. According to the heat exchanger, the fluid bypass problem existing in a tubular heat exchanger is fundamentally eliminated, fluid participating in heat exchange completely flows in the closed pipeline in the pure axial direction, two-strand or multi-strand pure countercurrent flow heat exchange can be achieved through reasonable process arrangement, the logarithmic average temperature difference correction coefficient approaches to 1, design is easy and convenient, and calculation is accurate and reliable. The heat exchanger integrates the advantages of a traditional tubular heat exchanger, a plate-fin heat exchanger, a lamella heat exchanger, a plate-type heat exchanger and a double-pipe heat exchanger, overcomes the defects of the traditional tubular heat exchanger, the plate-fin heat exchanger, the lamella heat exchanger, the plate-type heat exchanger and the double-pipe heat exchanger, is suitable for heat exchange of various media and complex working conditions, and can realize micro-channel and large-scale.

The application discloses a kind of wind energy air water taking device, mainly including power and flexible transmission module, compression and precooling gas storage module, condensation water taking module, collection and depth purification module and independent energy storage control unit.The core is to use high-pressure proportional shunt valve to divide high-pressure wet air into two ways: one way is expanded through vortex tube to produce extremely cold gas and is introduced into sleeve type counterflow heat exchanger outer tube;The other way is kept in high-pressure state into heat exchanger inner tube, and a large amount of condensed water is condensed and separated instantaneously under the countercurrent quenching of cold gas, which fundamentally eliminates the ice blockage hidden trouble caused by direct pressure reduction;In addition, the system realizes wind power self-adaptive no-load starting through centrifugal clutch and unloading valve linkage, and uses coaxial microgenerator to provide closed-loop power for water quality ultraviolet sterilization component;The application does not need external power grid support, and can efficiently and stably produce safe direct drinking water in extreme environment.

The invention discloses a low-backpressure vacuumizing optimization structure and method for a high-countercurrent-ratio NDACC system, and relates to the energy-saving technology of air cooling systems, and the low-backpressure vacuumizing optimization structure and method for the high-countercurrent-ratio NDACC system are characterized in that the low-backpressure vacuumizing optimization structure comprises a cooling unit, a vacuumizing pipeline system and a vacuum pump set; each cooling unit comprises a plurality of cooling triangles, at least one cooling triangle in each cooling unit is set as a countercurrent area, the other cooling triangles are set as downstream areas, the number ratio of the cooling triangles in the downstream areas to the cooling triangles in the countercurrent areas is not smaller than 2: 1 and not larger than 4: 1, and the downstream areas and the countercurrent areas are provided with electric shutters respectively; the tops of the cooling triangles of the downstream area are communicated with one another through a first pipeline, the bottoms of the cooling triangles of the downstream area are communicated with the bottoms of the cooling triangles of the countercurrent area through a second pipeline, the countercurrent area of each cooling unit is provided with a vacuumizing connector, and the vacuumizing connectors are connected to a vacuum pump set through a vacuumizing pipeline system. The exhaust efficiency of non-condensable steam under the low-back-pressure working condition is effectively improved, and the operation back pressure and freezing risk are reduced.

The application relates to the field of heat exchangers, in particular to a pure counterflow heat exchanger for tube and shell processes, which comprises a front-end tube box, a tube process inlet is fixedly communicated with the outer wall of the top end of the front-end tube box; a fixed tube plate is fixedly communicated with the right end of the front-end tube box; a shell process cylinder is fixedly communicated with the right end of the fixed tube plate, a shell process inlet is fixedly communicated with the top of the right end of the shell process cylinder, a shell process outlet is fixedly communicated with the bottom of the left end of the shell process cylinder; a rear-end tube box is fixedly communicated with the right end of the shell process cylinder; the tube process inlet is arranged at the left end and the tube process outlet is arranged at the right end, so that the same fixed tube plate is prevented from being simultaneously contacted with the inlet medium and the outlet medium and from having an excessively large temperature difference, the heat exchange effect is improved, an expansion joint is further arranged, the tube bundle can freely stretch and shrink along the axial direction, and the axial stress between the tube process and the shell process is reduced.

The application firstly provides a shell-and-tube heat exchanger based on M cycle, which comprises a heat insulation shell, a plurality of coaxial heat conducting cylinders are arranged in the heat insulation shell, the heat conducting cylinder comprises an inner cylinder and an outer cylinder which are coaxially arranged and have open ends, a gap is arranged between the inner cylinder and the outer cylinder, a gap is arranged between adjacent heat conducting cylinders, the gap between the inner cylinder and the outer cylinder of each heat conducting cylinder forms a dry channel, the gap between adjacent two heat conducting cylinders forms a wet channel, a flow dividing area is arranged at one end of the dry channel outlet in the heat insulation shell, and a water film is arranged on the outer cylinder at one side of the wet channel. The countercurrent refrigeration channels between different layers can absorb heat and promote the refrigeration process during work, the refrigeration effect is enhanced, the cooling range is large, the M cycle principle refrigeration is realized by a more compact tubular mechanism, and larger refrigeration capacity can be obtained under unit volume. The application further provides an air conditioner.

The utility model discloses a reverse flow type multi-stage heat exchange system which comprises a first-stage heat exchange unit, a second-stage heat exchange unit and a third-stage heat exchange unit, and medium inlets and outlets and heat exchange inlets and outlets of the three heat exchange units are respectively communicated. A first-stage heat exchange inlet is formed in the first-stage heat exchange unit and is connected with the first-stage heat exchange unit through a conical diffuser and a honeycomb guide plate; a second-stage heat exchange inlet is formed in the second-stage heat exchange unit, and the second-stage heat exchange inlet is connected with the second-stage heat exchange unit through a Venturi nozzle; a plurality of first-stage heat exchange pipes are arranged in the first-stage heat exchange unit and are corrugated pipes, a plurality of second-stage heat exchange pipes are arranged in the second-stage heat exchange unit and are spiral fluted pipes, and a plurality of third-stage heat exchange pipes are arranged in the third-stage heat exchange unit and are finned pipes. Cold fluid and hot fluid are arranged in a cross countercurrent mode, the device is efficient, flexible, high in adaptability, simple in structure, convenient to maintain, low in cost and capable of achieving low-temperature waste heat recovery, and comprehensive energy efficiency is greatly improved.

The application relates to a container type counter-flow closed cooling tower system and belongs to the technical field of cooling equipment. The system comprises a container box body, shallow layer water tanks are arranged in the box body from bottom to top, a multistage guide plate assembly, filler, heat exchange pipe bundles, a spraying system, a water collector and a fan assembly are arranged in the box body. The integrated shallow layer water tank is provided with a water collecting hopper formed by an inclined bottom plate and a submersible pump, low water level emptying prevention is realized, the pipe box type heat exchange pipe bundle realizes medium reversing through a built-in return cavity in the pipe box, external U-shaped elbows are omitted, the pipe row spacing is reduced, the unit volume heat exchange area is improved, the guide plate assembly considers water splash prevention and uniform air inlet, the spraying system adopts a dense nozzle array and a primary-secondary pipe structure, uniform spraying in a short spraying distance is ensured, and the fan adopts a draft tube-free EC axial flow fan, installation space is saved. The application can realize efficient and stable cooling in the limited height of a standard container, has the characteristics of high integration, good cooling effect and reliable operation, and is suitable for various temporary cooling scenes.

The utility model provides a reverse flow type heat exchange device. The reverse flow type heat exchange device comprises a tower body, a heat exchange tube bundle and an injection mechanism, the heat exchange tube bundle is arranged in the tower body in the vertical direction, a circulating water inlet is formed in the lower end of the heat exchange tube bundle, and a circulating water outlet is formed in the upper end of the heat exchange tube bundle; the spraying mechanism comprises nozzles, a conveying pipeline and a high-pressure spraying pump, a plurality of nozzles used for spraying water to the outer surface of the heat exchange tube bundle are distributed outside the heat exchange tube bundle, and each nozzle is communicated with the high-pressure spraying pump through the conveying pipeline. The water-water heat exchanger has the advantages that a high-pressure jet thin water film can be formed between external circulating water and the heat exchange tube bundle, and internal circulating water and the external circulating water are in a reverse flow type, so that the water-water heat exchange efficiency can be greatly improved.

The invention discloses a countercurrent modular packed bed heat storage system and a heat storage and heat release control method thereof.The heat storage system comprises a plurality of heat storage units, each heat storage unit achieves heat storage and heat release, and during heat storage, the temperature of fluid at an outlet of the first heat storage unit is maintained to be low for a set time and then gradually rises; when the temperature of the fluid at the outlet rises to a set value, the fluid enters the next heat storage unit to continuously and fully release heat; the heat storage is completed by sequentially pushing forwards according to the mode; in the whole process, when a certain heat storage unit is completely filled with heat, the heat storage unit is controlled to stop heat storage; in the heat release process, when the temperature of the fluid at the outlet of the first heat storage unit is reduced to the set temperature, the fluid at the outlet of the first heat storage unit is connected into the next heat storage unit to continuously absorb heat; and in the whole process, when a certain heat storage unit completely releases heat, the heat storage unit is controlled to stop heat storage.

To provide an air conditioning system that can be miniaturized and improve energy consumption efficiency. [Solution] The medium flow path comprises a cold air flow path through which the medium is cooled by heat absorption by a heat exchanger, and a hot air flow path through which the medium is heated. The air conditioning device includes a drive mechanism that drives the extension to move alternately within the cold air flow path and the hot air flow path, and a mechanism that controls the temperature T of the medium introduced into the first inlet. 11 The temperature T of the medium introduced into the second inlet 12 , the temperature T of the medium discharged from the first outlet 21 , or the temperature T of the medium discharged from the second outlet 22 The system includes a temperature acquisition unit that acquires the temperature of the medium, and based on the temperature of the medium acquired by the temperature acquisition unit, it controls the residence time of the extension in the cold air passage and / or the hot air passage, or controls the movement direction of the extension in the cold air passage and / or the hot air passage between parallel flow and counter-flow.

The invention relates to the technical field of pressure regulating devices for staged pressure reduction, in particular to a pressure regulating device based on countercurrent flow heat exchange and staged pressure reduction. And the pressure adjusting assembly comprises a first input pipe and a second input pipe which are symmetrically arranged in the box body, and a first pressure reducing valve and a first heat exchanger are fixedly installed in the first input pipe in a linear array mode. Gas-liquid two-phase flow is accurately separated through the cyclone separator, and the mixing state is monitored in real time in combination with the gas-liquid detection element; when proportion imbalance is detected (too much liquid phase causes insufficient heat exchange or too much gas phase reduces condensation efficiency), a controller automatically starts a phase splitting-mixing process, a lifting box ascends to compress a corrugated compression pipe to enable the gas phase to be atomized and sprayed into the liquid phase, and stirring teeth driven synchronously strengthen mixing uniformity; the pressure regulating element pressurizes the working medium to the pressure required by the second-stage pressure reducing valve, the problem of second-stage pressure reducing pressure fluctuation caused by gas-liquid imbalance of a traditional system is thoroughly solved, and efficient operation of the second heat exchanger is guaranteed.

A steam medium frequency heat storage power generation system, comprising a steam medium frequency heat storage power generation system, characterized by the steam medium frequency heat storage power generation system comprising a low-temperature hot water tank, a high-temperature hot water tank, a molten salt energy storage device, a counterflow heat exchanger, a compressor, an expander, a generator, four electromagnetic valves and connecting pipelines therebetween; the low-temperature hot water tank is communicated with the inlet of the compressor and the outlet of the expander; the outlet of the compressor and the inlet of the expander are communicated with one end of the counterflow heat exchanger steam channel; the other end of the counterflow heat exchanger steam channel is communicated with the high-temperature hot water tank. The application adopts water vapor as the working medium and liquid molten salt as the heat storage medium, realizes phase change access to heat energy through the design of high-temperature and low-temperature hot water tanks and the variable working condition of the compressor and the expander, improves the energy storage power generation efficiency, and is easy to implement commercially.

The utility model provides a heat exchanger shunting device which solves the problems that a small-diameter radiating pipe is prone to scaling in the using process, the flow speed of fluid is affected, the heat exchange efficiency is reduced, frequent shutdown for cleaning and maintenance is needed, and equipment operation is affected. The double-flow-path reverse flow path is arranged to form two-time cross heat exchange with shell pass fluid, the heat exchange efficiency can be improved, the two flow channels are independent of each other, starting and stopping of the two flow channels can be freely adjusted according to the temperature requirement, energy is saved, meanwhile, single-side mechanical cleaning is allowed under the condition that operation is not stopped, and the heat exchange efficiency is improved. And the other side is maintained to operate, so that the downtime is reduced, the problem of scaling can be solved on the premise of not changing the pipe diameter and energy consumption, and meanwhile, the operation of equipment is not influenced.

The invention discloses a tube box type heat exchanger based on single-stage parallelism, and belongs to the technical field of heat exchangers, the tube box type heat exchanger is formed by arranging a plurality of tube boxes of single-stage structures side by side, each tube box comprises a shell, and a plurality of heat exchange tubes used for guiding a high-temperature medium to flow are arranged in the shell in an array mode; a low-temperature medium channel used for guiding a low-temperature medium to flow is formed between the outer wall of the heat exchange pipe and the shell, and the flowing direction of the high-temperature medium is opposite to that of the low-temperature medium in a heat exchange area except an inlet and an outlet of the low-temperature medium channel in the shell so that a countercurrent flow heat exchange structure can be formed. The low-temperature medium channel inlet is close to the bottom end of the tube box, the low-temperature medium channel outlet is close to the top end of the tube box, and the high-temperature medium inlet and the high-temperature medium outlet are located at the bottom end of the tube box. The problems that an existing heat exchanger is large in occupied space and inconvenient to overhaul are at least solved.

The utility model provides a reverse flow type spiral shell and tube heat exchanger. The reverse flow type spiral shell and tube heat exchanger comprises an outer shell, a heat exchange core and a center shaft. A regeneration solution or a dehumidification solution enters the outer shell from the liquid inlet and is discharged from the liquid outlet, the dehumidification solution or the regeneration solution enters the heat exchange core from the liquid inlet pipe and is discharged from the liquid outlet pipe, and the flow direction of the dehumidification solution or the regeneration solution entering the heat exchange core is opposite to the flow direction of the regeneration solution or the dehumidification solution entering the outer shell. The heat transfer efficiency is improved in a reverse flow mode of the inner pipe and the outer pipe, the spiral flow guide ribs arranged on the center shaft play a flow guide role, liquid turbulent flow is increased, then the heat exchange efficiency is further improved, solution reverse flow efficient heat exchange can be achieved, cost is low, and batch production is facilitated.

The utility model discloses a multichannel countercurrent heat exchanger, and relates to the technical field of countercurrent heat exchangers, the multichannel countercurrent heat exchanger comprises a countercurrent device body, an extension mechanism is arranged in the countercurrent device body, and the extension mechanism extends to the outer side of the countercurrent device body. According to the multi-channel reverse flow heat exchanger, threads on the top surface and threads on the bottom surface of a threaded rod are oppositely arranged, the threaded rod penetrates through moving plates and is in threaded connection with the moving plates, the distance between the two moving plates can be shortened through rotation of the threaded rod, an adjusting plate can move, and a metal hose is pushed to move; the metal hose can deform and be in a bent state, so that when heat exchange fluid flows through the pipeline and the metal hose, the time of the heat exchange fluid in liquid can be prolonged, the distance between the adjusting plate and the inner wall of the countercurrent device body is shortened, and when the liquid in the countercurrent device body moves from the right side to the left side, the liquid flowing path is lengthened; the heat exchange efficiency is improved.

The application discloses a kind of photothermal heat supplement heat storage power generation systems, including low temperature energy storage system, high temperature energy storage system, fused salt energy storage device, first counterflow heat exchanger, compressor, expander, generator, photothermal heat supplement system and the connecting pipeline between them;The inlet of the compressor and the outlet of expander are communicated with the port A of low temperature energy storage system;The photothermal heat supplement system is installed between the inlet of the expander and the steam passage of first counterflow heat exchanger, and the outlet of the compressor is also communicated with the end of the steam passage of first counterflow heat exchanger;The other end of first counterflow heat exchanger steam passage is communicated with the port B of high temperature energy storage system;Two ends of the fused salt passage of the first counterflow heat exchanger are communicated with fused salt energy storage device.The application improves the power generation efficiency by adding the design of photothermal heat supplement system, and is easy to commercial implementation.

The utility model discloses shaping equipment for optical sheet production, which comprises a calender and a cooling shaping roller set, an optical sheet is conveyed from front to back, and the calender comprises a rack and three calender rollers which are sequentially and rotatably mounted at the top of the rack from front to back; the cooling and shaping roller group comprises a mounting frame and a plurality of cooling rollers which are mounted on the mounting frame at intervals from front to back; the mounting frame is configured to be connected to the rear end part of the rack in a manner of swinging up and down, the plurality of cooling rollers are in transmission connection with the same driving motor, and the rotating speeds of the plurality of cooling rollers are consistent; the cooling runners in the plurality of cooling rollers are sequentially communicated to form a cooling passage for conveying cooling water from back to front, and the cooling passage is communicated with an external temperature control system; countercurrent flow heat exchange is conducted between the cooling shaping roller set and the optical sheet, the heat exchange efficiency is improved, the forming characteristic of the optical sheet is met, and it is guaranteed that the formed optical sheet is transparent, flat and good in optical performance.

The utility model relates to a double-pipe heat exchanger with a bidirectional spiral flow channel. The double-pipe heat exchanger comprises a first pipe box, a second pipe box and a pipe bundle section. An inner tube and a plurality of sleeves are arranged in the tube bundle section; spiral fins are respectively arranged between the inner tube and the adjacent sleeve, between the sleeves and between the outermost sleeve and the outer wall of the tube bundle section, and a plurality of spiral runners are formed in the tube bundle section; a first partition plate, a first medium inlet and a second medium outlet are arranged in the middle of the first tube box. A second partition plate, a second medium inlet and a first medium outlet are arranged in the middle of the second pipe box. The first heat exchange medium and the second heat exchange medium conduct countercurrent flow heat exchange through the corresponding spiral flow channels, the heat exchange area is large, the heat exchange efficiency is high, the structure is simple, and manufacturing is convenient.

The utility model discloses a countercurrent plate type heat exchanger which comprises an upper spraying pipe, a lower spraying pipe and a heat exchanger body, valves are arranged on the upper spraying pipe and the lower spraying pipe respectively, the heat exchanger body comprises a plurality of first channels with openings in the upper side and the lower side, and second channels with openings in the upper side and the lower side are arranged between the adjacent first channels. The lower spraying pipe is arranged on the heat exchanger body in a penetrating mode and provided with a spraying water outlet point corresponding to the second channel, and water discharged from the lower spraying pipe does not enter the first channel. Good cooling, water-saving and white smoke eliminating effects can be integrally achieved, dry and hot air is sent out from an opening in the upper side of the first channel when water is independently introduced into the second channel, wet and hot air is normally sent out from the second channel, the two kinds of air tend to be kept in an unsaturated state after being mixed, and generation of white smoke at an outlet of the cooling tower can be fundamentally restrained; when the first channel and the second channel are simultaneously communicated with water, air-water direct contact heat exchange occurs, the heat exchange efficiency is highest, and the cooling effect is best.

A two-stage compression expansion heat storage power generation system, comprising a low-temperature heat storage power generation device, a first counterflow heat exchanger and a high-temperature heat storage power generation device; the low-temperature heat storage power generation device comprises a liquid storage tank, a low-temperature phase change heat storage device, a first compressor, a first expander, a first heat storage system, a liquid pump, a throttle valve, a first generator, a first circulating medium and connecting pipelines therebetween; the high-temperature heat storage power generation device comprises a low-temperature liquid storage device, a high-temperature liquid storage device, a high-temperature phase change heat storage device, a second heat storage system, a second expander, a second compressor, a second generator, a second circulating medium and connecting pipelines therebetween; the low-temperature heat storage power generation device and the high-temperature heat storage power generation device simultaneously perform heat storage and power generation modes. The two low-high-temperature heat storage power generation systems of the application complement each other by using freon and water vapor, and have the characteristics of non-toxicity, harmlessness, greenness, cleanness and high working efficiency.

The utility model relates to a gas dew point generating device for a simulation experiment, which is realized by adopting a single-temperature method principle and can realize saturation at a constant temperature after supersaturated gas introduced into a saturator passes through the saturator at the constant temperature so as to obtain a gas dew point temperature corresponding to a required temperature. The heat exchanger adopts a laminated plate group and countercurrent flow heat exchange design, a medium flow channel and a refrigerant coil pipe form a countercurrent layout in a snake shape or a U shape, the heat exchange efficiency is improved by more than 30%, meanwhile, a heater is embedded to realize rapid temperature compensation, the system response time is shortened, and the power of the heater and the rotating speed of a refrigerant compressor are dynamically adjusted in combination with real-time temperature sensor feedback. The temperature fluctuation range in the saturator is smaller than + / -0.05 DEG C, and the calibration precision is remarkably improved. According to the invention, wide-range dew-point temperature adjustment can be realized, and the requirements of industries such as hydrogen fuel cells and high-temperature gas cooled reactors on extreme humidity calibration are met.

A counterflow heat exchanger (1) for a turbine engine comprising a first circuit and a second circuit, the first circuit and the second circuit being respectively configured to receive a first gas flow (10) and a second gas flow (20), each circuit having a secondary inlet manifold, an exchange member and a secondary outlet manifold (13); the exchange members of the first circuit and of the second circuit being delimited by an exchange wall configured to guide the first gas flow (10) and the second gas flow (20) in a first direction (X); and wherein the secondary inlet manifold and the secondary outlet manifold (13) of the first circuit extend in a second direction (Y) substantially perpendicular to the first direction (X) and open on one and the same face of the exchanger (1).