720 results about "Condenser (heat transfer)" patented technology

The invention relates to the technical field of thermal power plant parameter regulation and control, in particular to an intelligent temperature and pressure regulation method and system for a thermal power plant, and the method comprises the following steps: collecting temperature, pressure and flow data based on heat transfer and flow channels among a boiler, a steam turbine, a condenser and heat exchanger equipment in the thermal power plant; constructing a network structure representing interaction between devices, evaluating heat exchange characteristics of nodes, and constructing heat flow path structure matrix information; according to the method, the complex interaction among the boiler, the steam turbine, the condenser and the heat exchanger equipment is accurately quantified by constructing the heat flow path network structure among the equipment and evaluating the heat exchange characteristics of the nodes. Thermal inertia feedback matrix information is introduced, and transient changes of temperature and pressure are monitored in real time, so that delay and inertia effects in heat transfer and fluid flowing between equipment can be more accurately captured, and the response speed and precision to different loads and working conditions are improved.

The invention discloses a CFD-based liquefied natural gas after-condenser structure optimization method and device. The method comprises the steps that an initial model is established based on an assembly drawing, and geometric pretreatment is completed; extracting a fluid channel, segmenting and selecting a computational domain, and carrying out local encryption on a key region; generating a polyhedral grid by using a grid division tool, and completing grid independence verification; importing the polyhedral mesh into a solver, and carrying out model setting; boundary and wall surface conditions are set, and solver parameters are configured; setting an initial flow field through a hybrid initialization method, and establishing a flow monitoring window and a temperature monitoring window to adjust simulation until convergence; analyzing the temperature cloud picture and the flow vector diagram, and adjusting the structure of the baffle plate; the tower diameter and the height of the filler layer are adjusted according to a physical quantity field change curve of the filler layer, and the performance of the recondenser is continuously improved. The problem of how to deeply study the flow heat transfer rule in the after-condenser and obtain the flow field distribution characteristics is solved, so that the working performance of the after-condenser is improved.

A refrigeration cycle is connected to a supercritical carbon dioxide (sCO2) power cycle by incorporating a CO2 condenser which is also the refrigeration cycle evaporator. The heat rejected by the carbon dioxide is absorbed by the refrigerant in the CO2 condenser. Work is done on the refrigerant to raise its temperature above the local ambient temperature. The heat absorbed from the power cycle and the work required to raise the refrigerant temperature is rejected to the ambient environment, which may be either air, earth, or water. This results in improved efficiencies in carbon dioxide power cycles without regard to the ambient temperature by forcing a transcritical phase change even when ambient temperatures are above the carbon dioxide critical point. A two-phase heat transfer on both sides of the CO2 condenser further improves efficiency of the sCO2 power cycle.

The invention relates to the technical field of condensers, and discloses a high-efficiency heat exchange condenser system which comprises a mounting box and further comprises a fan arranged at the top of the mounting box, a plurality of heat exchange pipes fixedly connected into the mounting box, a plurality of spraying pipes and a plurality of water storage sleeves. The bottom of the transmission part is meshed with the stress wheel, one side of the stress wheel is attached to the transmission lead screw, the water storage sleeve is used for storing fluid, and the transmission part is impacted by fluid fluctuation, so that the multiple cleaning and scraping parts reciprocate outside the heat exchange pipe. The thickness of a water film formed by spraying water on the outer wall of the heat exchange pipe can be effectively limited through the water storage sleeve, dirt on the outer wall of the heat exchange pipe is treated through synchronous reciprocating movement of the multiple transmission lead screws, the cleanliness of the heat exchange pipe is guaranteed, the thickness of the pipe wall of the heat exchange pipe is uniform, the heat transfer efficiency of the heat exchange pipe is improved, and meanwhile the service life of the heat exchange pipe is prolonged. And the heat exchange effect of the fluid is improved.

The invention provides an air source heat pump unit with a dust removal function, and relates to the technical field of heat pumps, the air source heat pump unit comprises a heat pump rack, a heat pump mechanism facilitating low-temperature heat transfer is arranged on the heat pump rack, and a cleaning mechanism facilitating dust removal cleaning is arranged on the heat pump rack; the heat pump mechanism comprises an air inlet and outlet pipe, a compressor, a condenser, a central control machine and an evaporator. The cleaning mechanism comprises a driving power source, a lower fixing plate, a concentric-square-shaped frame, a dust collecting box, a C-shaped rod and an ash guide pipe. According to the device, the C-shaped rod is arranged to be matched with the cleaning brush, when fins on the evaporator are cleaned, the evaporator does not need to be manually cleaned after being dismounted, the dismounting of the evaporator from shutdown and dismounting to subsequent mounting and debugging consumes more manpower and material resources, the cleaning work can be rapidly completed through the cleaning brush on the C-shaped rod, and the cleaning efficiency is improved. The downtime is shortened, the production efficiency is improved, the evaporator does not need to be disassembled, and the labor consumption is reduced.

The invention discloses a multi-loop natural circulation coupling heat removal experiment system, which relates to the technical field of nuclear reactor safety, and is characterized by comprising an integrated pressure vessel, an energy conversion and residual heat removal integrated design loop, a condenser cooling water loop, a thermal insulation material and a measuring instrument, the heat insulation material coats the heat extraction experiment system and is used for reducing energy leakage; and the measuring instrument is arranged on the heat extraction experiment system and is used for measuring and monitoring the flow, the temperature, the pressure and the liquid level. Research is carried out on an integrated pressure container designed in a marine nuclear power source and an energy conversion and waste heat removal integrated system, and three natural circulations are formed in a secondary loop and a condenser seawater section in the integrated pressure container respectively; all natural circulations are coupled into a whole through a steam generator heat transfer pipe and a condenser heat transfer pipe, and waste heat of a reactor core is discharged through coupling of multiple natural circulations, so that shutdown safety of a nuclear reactor is guaranteed.

The invention relates to an energy-saving efficient refrigerating unit and process, and belongs to the technical field of refrigerating equipment. The refrigerating unit comprises a generator, a condenser, an absorber and an evaporator, the condenser is connected with a flow dividing and pressure reducing pipeline, the flow dividing and pressure reducing pipeline divides a liquid refrigerant into two paths and guides the liquid refrigerant into the absorber and the evaporator, and a solution pump is arranged between a rich liquid outlet of the absorber and a rich liquid inlet of the generator. And an ejector is arranged on a pipeline between the barren liquor inlet of the absorber and the barren liquor outlet of the generator. Refrigerant formed in the condenser is divided into two paths and decompressed, one path serves as a cold source of the absorber, replaces circulating water and absorbs heat outside a pipe of the absorber to generate pool type boiling and phase change, the heat transfer efficiency is greatly improved, the refrigeration efficiency can be improved, and the refrigerant serving as liquid refrigerant self-produced by a unit is stable in temperature and low in cost. The device is slightly influenced by high temperature in summer and can be recycled.

A refrigeration system includes a compressor, a condenser, a heat transfer component, and a refrigerant loop arranged to allow a flow of a refrigerant fluid. The compressor, the condenser, and the heat transfer component are connected in the refrigerant loop. The system further includes a bypass path extending between an output side of the compressor in the refrigerant loop and an input side of the heat transfer component in the refrigerant loop. A bypass valve is connected in the bypass path. A control circuit is in communication with the bypass valve. The control circuit is configured to open the bypass valve to allow the refrigerant fluid to pass to the heat transfer component thereby increasing the refrigerant fluid provided to the heat transfer component and artificially increasing a load on the refrigeration system. Other examples refrigeration system and examples methods are also disclosed.

The utility model relates to the technical field of air conditioners, particularly provides an air conditioner outdoor unit and an air conditioner, and aims to solve the problem that an existing air conditioner outdoor unit is poor in heat dissipation effect. In order to achieve the purpose, the air conditioner outdoor unit comprises a machine shell, the interior of the machine shell is provided with a partition plate, and the partition plate divides the internal space of the machine shell into a first cavity and a second cavity; the condenser is arranged in the first chamber; the electric control assembly is connected with the partition plate, and one end of the electric control assembly extends into the first cavity and is connected with a radiator; and the partition piece is arranged between the condenser and the radiator. The air flow passing through the radiator can be adjusted from a laminar flow state to a turbulent flow state, so that the convective heat transfer coefficient between the air flow and the radiator is increased, the heat exchange efficiency is enhanced, and stable operation of the electric control assembly is facilitated.

The invention discloses a microchannel condenser flow distribution global simulation method and system, and relates to the field of microchannel condenser flow distribution calculation. The method comprises the following steps: firstly, constructing a heat transfer and resistance model and forming a single-channel model by combining the size and structure of a parallel channel of the condenser and working medium flow heat exchange characteristics, and constructing a shunting and converging numerical model according to an inlet and outlet area structure of the condenser; secondly, numerical simulation is conducted on the division and convergence numerical model, and stable initial field distribution is obtained; then, determining the mass flow rate of each channel based on the shunting initial field, calculating the back pressure of the channel by taking the mass flow rate as the inlet boundary condition of a confluence model, calculating the inlet pressure of the channel through a single-channel model, and updating the outlet boundary of the shunting model; and finally, iterating the process until the channel mass flow error is smaller than a limit value, obtaining the distribution of the sub-confluence three-dimensional physical field and the one-dimensional flow heat exchange parameters and the heat exchange amount of the parallel channels, and checking whether the heat exchange amount meets the design requirements or not. The method gives consideration to calculation efficiency and precision, can provide support for structure optimization of the micro-channel condenser, and is suitable for micro-channel condenser design in the fields of refrigeration equipment, air conditioning systems and the like.

The utility model relates to the technical field of crude benzene distillation in coal gas purification, in particular to crude benzene condensing and cooling equipment. Comprising a crude benzene condenser and a crude benzene cooler; the body of the crude benzene condenser is vertically arranged, the body of the crude benzene cooler is horizontally arranged, and the body of the crude benzene condenser is communicated with the body of the crude benzene cooler; the crude benzene condenser adopts a spiral plate type condenser, and the crude benzene cooler adopts a shell-and-tube heat exchanger. The device is compact in structure, small in occupied area, low in investment, high in heat transfer efficiency and capable of greatly improving the crude benzene treatment capacity.

The invention relates to the technical field of absorption type heat exchange and heat supply technologies, in particular to an intelligent large-temperature-difference absorption type heat exchange unit and a heat exchange method.The intelligent large-temperature-difference absorption type heat exchange unit comprises an I-type unit, an II-type unit and a control system.The I-type unit and the II-type unit each comprise a heat pump host, a generator, a condenser, an evaporator, an absorber, a heat exchanger and heat exchange liquid; the heat exchange liquid conducts cascade heat exchange in the generator, the condenser, the evaporator, the absorber and the heat exchanger, the heat exchange liquid comprises a lithium bromide solution and refrigerant water, the control system comprises a controller and a standby plate heat exchange module, and the two heat pump main machines are both in communication connection with the controller. The multi-stage evaporation and multi-stage absorption process is adopted, cascade heat exchange can be achieved, and the temperature difference of inlets and outlets of the I-type unit and the II-type unit is increased, so that the outlet temperature of the units is reduced, irreversible heat transfer loss in the units is reduced, and the efficiency of the units is improved.

A thermomodulating heat pipe is provided including a heat pipe envelope having a capillary wick extending substantially continuously the full length of the heat pipe and a void space interior of the capillary wick. The heat pipe envelope has a nominal evaporator section, a nominal condenser section where the nominal condenser section includes an active condenser portion and an inactive condenser portion, and a reservoir section extending from the inactive condenser portion. At a nominal condition, a heat pipe fluid is provided with a liquid phase filling the capillary wick and a vapor phase filling the void space of the nominal evaporator section and the active condenser portion, a non-condensable gas filling the void space of at least the reservoir section and the inactive condenser portion. Depending on thermal conditions, both prograde and retrograde heat transfer are enabled.

A heat pump system comprises a heat pump circuit (10), a heating unit (30), a low-temperature-side heat transfer fluid circuit (40), and a control unit (70). The heat pump circuit includes a compressor (11), a condenser (12), a pressure reduction unit (14b), and an evaporator (16). The heating unit heats ventilation air to be blown into a room to be air-conditioned by using heat released by a high-pressure refrigerant in the condenser as a heat source. The low-temperature-side heat transfer fluid circuit is configured to circulate a low-temperature-side heat transfer fluid and cause the refrigerant in the evaporator to absorb heat from the low-temperature-side heat transfer fluid. It includes a heat source device (42, 45, 46) and a heat quantity adjustment unit (41, 44, 47).The control unit causes a heat transfer quantity in the heating unit to heat the ventilation air by adjusting the temperature of the low-temperature heat medium (Twl) to approach a predetermined setpoint by controlling the speed (Nc) of the compressor and the operation of at least one of the heat source device and the heat quantity adjustment unit.

The invention discloses a high-liquid-filling-rate loop thermosiphon with an evaporator of a gradient silk screen structure. The evaporator is of a tubular structure and comprises a hollow tube body. A plurality of layers of silk screens are arranged on the inner wall of the tube body, and meshes of the silk screens are increased layer by layer in the direction from the inner wall of the tube body to the center of the tube cavity; the pipe body and the screen mesh adjacent to the pipe body are tightly attached to each other and fixedly connected, and every two adjacent layers of screen meshes are tightly attached to each other and fixedly connected. The loop thermosiphon comprises the evaporator, a steam pipeline, a tubular condenser and a liquid pipeline, wherein the evaporator, the steam pipeline, the condenser and the liquid pipeline are sequentially connected end to end to form a closed loop. By using the gradient wire mesh evaporator and using the self-wetting fluid as the heat transfer working medium, the size of bubbles generated after phase change of the heat transfer working medium is reduced when the bubbles are separated from the evaporator, the bubble separation frequency is increased, the circulating power of the loop thermosiphon is enhanced, and the heat transfer performance of the loop thermosiphon is improved.

The present invention discloses an endoscope array scanning device for heat transfer tubes of a heat exchanger, wherein the sliding guide rail provides a guide for the multi-axis mechanical arm to move along both sides of the tube sheet, the mechanical arm lifting platform is arranged on the sliding guide rail, and is used to control the lifting height of the multi-axis mechanical arm, the lifting platform is fixedly mounted on the mechanical arm lifting platform, the multi-axis mechanical arm is arranged on the mechanical arm lifting platform, and is used to extend the endoscope probe into the tube mouth of the heat transfer tube, and the endoscope probe is arranged at the end of the multi-axis mechanical arm, and is used to collect and transmit the tube mouth image of the heat transfer tube; the present invention uses an automated endoscope array to perform intelligent visual inspection of the proximal tube mouth and tube sheet of the condenser, and quantitatively analyzes the defects detected in the tube mouth and tube sheet, which not only solves the problem of blind spots in the traditional eddy current inspection at the tube mouth, but also can perform quantitative analysis and visual management of the detected defects, reduce the burden on the inspection personnel, and improve the accuracy and efficiency of the inspection.

The invention provides a vehicle heating ventilation air conditioning system comprising a compressor; an internal condenser provided on the downstream side of the compressor; a water-cooled heat exchanger disposed on a downstream side of the internal condenser and configured to transfer heat between the refrigerant and the coolant circulating in the coolant system; an external heat exchanger disposed on a downstream side of the water-cooled heat exchanger and configured to transfer heat between the refrigerant and ambient air; a refrigerant heat exchanger configured to transfer heat between the refrigerant discharged from the water-cooled heat exchanger and the refrigerant discharged from the internal condenser; and a first control valve located between the water-cooled heat exchanger and the internal condenser and configured to allow the refrigerant discharged from the internal condenser to be guided to at least one of the water-cooled heat exchanger, the refrigerant heat exchanger, and the external heat exchanger.

The invention relates to the field of automobile heat management, and provides an electric automobile and a heat management system thereof. A cooling liquid subsystem of the system comprises a five-way valve, a six-way valve, a PTC heating assembly, a battery cooling assembly, a motor cooling assembly, a radiator, a heat exchanger, a water-cooling condenser, a warm core, a one-way valve and a water pump, and the six-way valve is connected with the motor cooling assembly, the battery cooling assembly, the heat exchanger, the water-cooling condenser and the water pump. The five-way valve is connected with the PTC heating assembly, the motor cooling assembly, the heat exchanger, the radiator and the water pump, and a plurality of different loops of the cooling liquid subsystem are formed by switching the position states of the five-way valve and the six-way valve. Through the connection relation of the five-way valve and the six-way valve and the combination of the position state switching of the five-way valve and the six-way valve, the number of valve body assemblies can be reduced while heat transfer for refrigeration or heat dissipation can be effectively achieved, for example, the use of three-way valves with high cost can be reduced, and the system cost can be reduced.

The invention relates to the technical field of thermal power generation, in particular to a direct air cooling condenser fouling thermal resistance estimation method combined with a scaling mechanism, and aims to realize stable and accurate real-time estimation of the fouling thermal resistance of a condenser. The method includes the steps that operation parameters of the direct air cooling unit are collected and preprocessed to form a continuous time sequence; calculating multiple groups of cleaning total heat transfer coefficients based on the cleaning period operation parameters, training a machine learning model based on the cleaning total heat transfer coefficients, and establishing a cleaning heat transfer coefficient reference model; calculating an actual total heat transfer coefficient based on the current operation parameters, inputting the reference model to obtain a corresponding cleaning coefficient, and calculating initial fouling thermal resistance according to the cleaning coefficient; and establishing a discrete linear recursion physical filtering model based on a dirt deposition-denudation mechanism, identifying model parameters on line by taking the initial dirt thermal resistance as an observed quantity, performing physical constraint filtering on the model parameters, and outputting a final dirt thermal resistance online estimated value.

The utility model discloses an R290 heat management system based on secondary loop integrated waste heat utilization, relates to the field of electric automobile heat management, and aims to solve the problems that a heat management system in the prior art is high in cost, large in heat transfer loss, incapable of coping with an extremely low temperature environment and insufficient in single-core refrigerating capacity. A six-way water valve and a seven-way water valve are combined with a three-way valve to form a heat management pipeline, the heat management pipeline exchanges heat with an R290 circulation pipeline, a water-cooling condenser and a chiller battery cooler can be fully operated, a system connecting pipeline and a fluid flow direction are flexible and controllable, the control precision is high, a cold air core body and a warm air core body can be connected in series during refrigeration by changing pipeline connection, and the refrigeration efficiency is improved. Therefore, double-core refrigeration is carried out, and the refrigeration capacity is high; by proportionally adjusting the cooling liquid flow of the two loops, accurate temperature control after liquid mixing is realized, temperature impact on the battery is avoided, and the heat exchange efficiency is higher.

The invention relates to a process for extracting alcohols from an initial mixture (1) comprising alcohols in aqueous phase, with:a distillative separation by an isopropanol-butanol distillation column (III) equipped at the top with a condenser (c3), intended for separating said mixture into a water-isopropanol azeotrope stream (6) at the top and into a water-butanol azeotrope stream (7) at the bottom,a distillative separation intended for separating the water-butanol azeotrope stream into water and butanol, by a hetero-azeotropic distillation system comprising at least one water-recovering water column (IV) and at least one butanol (9)-recovering butanol column (V) equipped with a reboiler (r5),such that a heat transfer is performed from the top water-isopropanol azeotrope stream (6) entering the condenser of the isopropanol-butanol distillation column (III), to the stream entering the reboiler of the butanol column (V).

The utility model provides a condenser of a reaction kettle. The condenser comprises a shell, an end socket, a filter, a condensing pipe, an upper fixing plate, a lower fixing plate and a connecting pipe, the upper end of the condensation pipe is in threaded connection with the interior of the threaded hole of the upper fixing plate, the lower end of the condensation pipe is inserted into the corresponding insertion hole in the lower fixing plate, the upper fixing plate and the lower fixing plate are connected through the flange, the structure can facilitate installation, disassembly and replacement of the condensation pipe, and when the condensation pipe needs to be cleaned, the condensation pipe can be disassembled for cleaning; a filter is arranged on the water inlet pipe and can filter water entering the condensation pipe, and impurities are prevented from being attached to the pipe wall to affect the heat transfer efficiency after entering; the lower ends of the condensation pipes of the water inlet area and the water outlet area are communicated through the connecting pipe, so that condensed water enters the connecting pipe after being subjected to primary heat exchange in the condensation pipes communicated with the water inlet area, the connecting pipe is located outside the shell, and the condensed water can be subjected to proper heat dissipation, then flows into the condensation pipes communicated with the water outlet area to be subjected to heat exchange again and then is discharged. And the condensation effect can be improved.

A multi-source ground-to-air heat transfer system is configured to store thermal energy during a cooling / dehumidifcation mode of operation for future use during a heating mode of operation. The multi-source ground-to-air heat transfer system utilizes a ground loop that is configured under an enclosure, such as a greenhouse, and is in thermal communication with a thermal reservoir medium to conduct and store heat. A thermal exchange fluid is pumped through the ground loop and ground heat exchanger and may receive heat from a condenser during a cooling / dehumidification mode of operation and may liberate heat to the evaporator during a heating mode. The enclosure air may receive heat from the heat pump during a heating mode and may liberate heat to the evaporator during a cooling / dehumidification mode. The heat exchange system may employ a heat pump having a reversing valve to change the mode of operation.

The invention relates to the technical field of condenser self-cleaning, in particular to an air conditioner condenser self-cleaning structure based on bionic fins, which comprises a fixing frame, mounting plates are fixedly connected to two ends of the fixing frame, a plurality of groups of fins are connected to the outer side of the fixing frame, a copper pipe is arranged on one side of the plurality of groups of fins, and a sealing groove is fixedly connected to the outer side of the copper pipe. A reciprocating lead screw is rotationally arranged on one side of the sealing groove, a guide pipe is connected to the outer side of the reciprocating lead screw, and a connecting pipe A is connected to one end of the guide pipe. An air pressure pipe is arranged on one side of the multiple sets of fins. Therefore, dust particles attached to the surfaces of the fins are subjected to periodic external force, the adhesive force between dust and the fins is destroyed, the dust is made to fall off from the surfaces of the fins more easily, the surfaces of the fins are kept clean, meanwhile, convective heat exchange between air and the fins is enhanced, and the heat exchange efficiency in the heat dissipation process is improved.

The invention discloses a heat pipe radiator and an air conditioner outdoor unit, the heat pipe radiator comprises an evaporator and a condenser, and the evaporator is a U-shaped pipe; according to the parallel flow micro-channel heat exchanger of the condenser, a plurality of flat pipes arranged in parallel are arranged between an upper collecting pipe and a lower collecting pipe, and fins are arranged between the adjacent flat pipes; the U-shaped pipe and the condenser are integrally designed, pipeline connection between the evaporator and the condenser is simplified, the number of welding spots is greatly reduced, meanwhile, an efficient, compact and reliable heat pipe circulation loop is constructed, and when the heat pipe is applied to heat dissipation of a controller of an air conditioner outdoor unit, the heat pipe has the remarkable advantages in the aspects of heat transfer efficiency, structural layout, reliability, environmental adaptability and the like.

The utility model discloses a heat source water segmented cooling type two-stage two-class absorption heat pump, and belongs to the technical field of heat exchange equipment. Comprising a first-stage condenser, a second-stage condenser, a first-stage regenerator, a second-stage regenerator, a low-pressure evaporator, a low-pressure absorber, a high-pressure evaporator, a high-pressure absorber, a low-temperature heat exchanger, a high-temperature heat exchanger, a solution pump, a first-stage refrigerant feeding pump, a second-stage refrigerant feeding pump, a refrigerant circulating pump and a flash tank. The structure and process of heat source water segmented cooling and two-stage absorption and evaporation are adopted, refrigerant water circulation is conducted in a low-pressure absorber pipe, solution circulation is conducted outside the low-pressure absorber pipe, no heat transfer pipe is arranged in a high-pressure evaporator, the high-pressure evaporator conducts heat exchange in a refrigerant water flash evaporation mode, and refrigerant water flows through gravity and density difference; power devices such as a circulating pump do not need to be configured, the unit cost is reduced, heat source water cascade efficient utilization is achieved, the output grade and output of steam are improved, the heat exchange efficiency of the unit is improved, energy waste is avoided, and meanwhile stable operation of the unit can be guaranteed.

The invention discloses a polyolefin elastomer solution devolatilization system and a polyolefin elastomer solution devolatilization method. The system comprises a horizontal double-shaft kneading devolatilization device and a double-screw extrusion devolatilization machine, a high-temperature atomizer is arranged at a feeding hole of the horizontal double-shaft kneading devolatilization device; the high-temperature atomizer comprises an atomizing nozzle, a gas heater and an air blower; a devolatilization opening is formed above the horizontal double-shaft kneading devolatilization device and is sequentially connected with a condenser and a vacuum pump; a discharge hole of the devolatilization device is connected with a discharge screw rod; a feeding port of the double-screw extrusion devolatilization machine is connected with a discharging screw, a devolatilization port is formed in the upper portion of the double-screw extrusion devolatilization machine and sequentially connected with a condenser and a vacuum pump, and a devolatilized product outlet is formed in the tail of the devolatilization machine. According to the invention, the horizontal double-shaft kneading devolatilization device and the double-screw extrusion devolatilization machine are matched with each other, and the high-temperature atomizer is assisted, so that a large-area heat transfer effect is realized, an efficient devolatilization effect is further realized, and a polymer product with lower residual volatile component content is obtained.

The invention discloses a super-hydrophobic fin-shaped condensation pipe based on porous memory alloy, and belongs to the field of condensation and heat and mass transfer enhancement. Aiming at the problems of large liquid film thermal resistance, low efficiency and poor working condition adaptability during condensation heat transfer outside a traditional condensation pipe, the invention comprises a fin-shaped condensation pipe, a porous memory alloy and a super-hydrophobic preparation method. The fin-shaped condensation pipe is made of high-heat-conduction metal, preferably red copper or aluminum, and an array type fin-shaped structure is formed through laser processing. The Ni-Ti porous memory alloy is attached to the outer side of the fin shape through SLM, and spontaneous separation of liquid drops is achieved; the super-hydrophobic characteristic provides high-density nucleation points, and rapid generation of micro-nano liquid drops is promoted. Through collaborative innovation of the super-hydrophobic fin-shaped structure, the porous memory alloy and the super-hydrophobic characteristic, the liquid drop separation critical radius can be effectively reduced, the surface renewal rate is increased, efficient and stable condensation heat transfer efficiency is achieved, and the super-hydrophobic fin-shaped structure is suitable for different condensation working conditions.

The invention discloses a detachable water-fluorine two-way stepped waste heat recovery anti-corrosion heat exchanger, comprising a primary waste heat recovery water way heat exchanger arranged in a primary waste heat recovery water way stratified heat exchange isolation box body, a secondary waste heat recovery fluorine way condensing heat exchanger arranged in a secondary heat exchange box body, a sewage distribution system, a low-temperature water gravity discharge overflow pipeline, and a primary waste heat recovery pipeline inlet and a primary waste heat recovery pipeline outlet arranged on the top of the secondary heat exchange box body, the primary waste heat recovery pipeline inlet is connected to a tap water pipe, the primary waste heat recovery pipeline outlet is connected to the inlet end of a heat pump condenser, and the secondary waste heat recovery fluorine way condensing heat exchanger is respectively connected to a split heat pump throttle valve and a compressor system through a fluorine way pipeline interface. The invention has a simple structure and a small footprint, can maximize the use of waste heat, has high heat transfer efficiency, solves the problem of heat waste, and the temperature of the heat source water is stepped and stratified, with high temperatures at the top and low temperatures at the bottom, and has strong system stability.

The utility model belongs to the technical field of heat exchange equipment, and particularly relates to an absorption type device adopting a falling film regenerator. Comprising an absorber, an evaporator, a condenser, a low-temperature regenerator, a high-temperature regenerator, a low-temperature heat exchanger, a high-temperature heat exchanger, a refrigerant condensate heat recovery device, a low-temperature heat regenerator, a drainage device, a high-temperature heat regenerator, a dilute solution pump, a concentrated solution pump and a refrigerant pump, and the high-temperature regenerator and the low-temperature regenerator adopt solution falling film structure units. The heat exchange efficiency of solution and steam is effectively improved, heat of heat source steam is fully recycled, the low-temperature regenerator is of a falling film heat exchange structure, the refrigerant water storage amount in a heat transfer pipe of the low-temperature regenerator is reduced, the refrigerant evaporation efficiency in the high-temperature regenerator is improved, the solution filling amount in the regenerator is effectively reduced, and the unit cost is greatly reduced; and high-temperature heat return and low-temperature heat return are adopted to recover steam condensate heat, efficient recovery of heat source steam heat is achieved, and the use safety of the unit is improved.