CN112444140B - Device and method for enhancing evaporation and heat exchange of fog drops - Google Patents
Device and method for enhancing evaporation and heat exchange of fog drops Download PDFInfo
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- CN112444140B CN112444140B CN202011385087.0A CN202011385087A CN112444140B CN 112444140 B CN112444140 B CN 112444140B CN 202011385087 A CN202011385087 A CN 202011385087A CN 112444140 B CN112444140 B CN 112444140B
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- 230000008020 evaporation Effects 0.000 title claims abstract description 17
- 238000001704 evaporation Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000002708 enhancing effect Effects 0.000 title claims description 10
- 239000007788 liquid Substances 0.000 claims abstract description 141
- 239000011664 nicotinic acid Substances 0.000 claims abstract description 95
- 230000010355 oscillation Effects 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims abstract description 23
- 230000000630 rising effect Effects 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 6
- 238000005728 strengthening Methods 0.000 claims abstract description 6
- 238000000889 atomisation Methods 0.000 claims description 20
- 238000004321 preservation Methods 0.000 claims description 13
- 230000001965 increasing effect Effects 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 6
- 241001465754 Metazoa Species 0.000 claims description 5
- 230000005661 hydrophobic surface Effects 0.000 claims description 5
- 230000008602 contraction Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 210000002615 epidermis Anatomy 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000012071 phase Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003491 skin Anatomy 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B3/00—Condensers in which the steam or vapour comes into direct contact with the cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B11/00—Controlling arrangements with features specially adapted for condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/02—Other direct-contact heat-exchange apparatus the heat-exchange media both being gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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- Special Spraying Apparatus (AREA)
Abstract
The invention discloses a device and a method for strengthening evaporation and heat exchange of fog drops, and the device comprises a liquid storage tank, a controllable flow valve, a centrifugal pump, a booster fan, a feedback thermometer, an electric control cabinet and a heat exchange generator, wherein the heat exchange generator comprises a heat insulation shell, an oscillation atomizing nozzle, a fixed plate and a bionic guide plate; the bionic guide plate is a thin plate with a spiral rising structure, and the surface of the bionic guide plate is a bionic surface; the invention is of controllable temperature type, low resistance, fast heat exchange rate, small volume and small occupation and high gas evaporation efficiency.
Description
Technical Field
The invention relates to the field of thermal energy engineering, in particular to a device and a method for strengthening evaporation and heat exchange of fog drops.
Background
A heat exchanger (also referred to as a heat exchanger) is a device for exchanging heat between cold and hot media, and is widely used in various fields such as chemical industry, petroleum, power, and food. In the field of heat energy engineering, the efficiency of a thermal engineering system or a thermodynamic cycle system is directly influenced by the heat exchange efficiency of a heat exchanger, so that the utilization rate of energy is influenced. Energy shortage and environmental pollution have become one of the main problems limiting human sustainable development, and how to improve the utilization efficiency of energy, heat exchangers naturally become one of the devices of people's attention.
The heat exchanger comprises a condenser, an intercooler, an evaporator, an air cooler and the like, and the heat exchange process is mainly the convective heat exchange of cold fluid and hot fluid. It is known that different heat exchange modes have different requirements on the structure and the type of the heat exchange unit in the heat exchanger. The current heat exchange evaporator is a special energy conversion device. The evaporation utilizes substance phase change energy, namely substance latent heat, the change of liquid or gas temperature is sensible heat, the latent heat carries large heat, the utilization value is high, the substance conversion energy per unit weight is large, but the gas phase density is small, the volume is large, the gas-liquid conversion efficiency is not high enough, the resistance of the liquid phase is large, and the temperature of the gas phase or the liquid phase after the heat exchange of the current equipment can not be accurately controlled. The existing heat exchange evaporator also has the problems that the volume is increased in order to increase the heat exchange area, the heat exchange area occupied by the gas phase section is large, the whole occupation is large, the cost is increased and the like.
Disclosure of Invention
The invention aims to solve the problems of uncontrollable heat exchange temperature, slow heat exchange rate, large occupied space of a heat exchanger and the like in the existing heat exchange technology, and provides a device and a method for enhancing fog drop evaporation heat exchange, which are controllable in temperature, low in resistance, fast in heat exchange rate, small in occupied space and high in gas evaporation efficiency.
The invention realizes the purpose through the following technical scheme: a device for strengthening evaporation and heat exchange of fog drops comprises a liquid storage tank, a controllable flow valve, a centrifugal pump, a booster fan, a feedback thermometer, an electric control cabinet and a heat exchange generator, wherein the heat exchange generator comprises a heat insulation shell, an oscillation atomizing nozzle, a fixed plate and a bionic guide plate, high-temperature liquid is stored in the liquid storage tank, a liquid inlet pipe of the liquid storage tank guides the high-temperature liquid into the liquid storage tank, a liquid outlet pipe of the liquid storage tank is connected with the oscillation atomizing nozzle through the centrifugal pump, and the controllable flow valve is arranged on the liquid outlet pipe between the liquid storage tank and the centrifugal pump and controls the liquid to be atomized; the inner part of the heat-insulating shell is hermetically arranged, a fixed plate and a bionic flow guide plate are sequentially arranged in the heat-insulating shell from top to bottom, the fixed plate and the bionic flow guide plate divide the inner part of the heat-insulating shell into a high-temperature gas cavity, an atomizing cavity and a low-temperature liquid cavity from top to bottom, a nozzle mounting hole and an air outlet through hole are formed in the fixed plate, an oscillating atomizing nozzle penetrates through the side wall of the heat-insulating shell and is fixedly mounted on the nozzle mounting hole of the fixed plate, and the air outlet through hole communicates the high-temperature gas cavity and the atomizing cavity in the heat-insulating shell; the bionic guide plate is a thin plate with a spiral rising structure, and the surface of the bionic guide plate is a bionic surface; the top of the heat-insulating shell is provided with a gas outlet communicated with the high-temperature gas cavity, and the gas outlet is connected with a gas outlet pipeline; an air inlet is arranged below the heat-insulating shell and is connected with a booster fan which introduces normal-temperature gas into the atomizing cavity, and the air inlet is communicated with the lowest point of the atomizing cavity; a liquid pipeline outlet is formed in the bottom of the heat-insulation shell, the liquid pipeline outlet is connected with a liquid pipeline and discharges liquid in the low-temperature liquid cavity, and a feedback thermometer is arranged on the liquid pipeline; the feedback thermometer and the controllable flow valve are electrically connected with the electric control cabinet.
Furthermore, the bionic surface is provided with a plurality of bionic attenuation bands, each bionic attenuation band is composed of a row of hemispherical bulges, and a plurality of rows of bionic attenuation bands are arranged along the spiral rising track of the bionic surface.
Furthermore, the radius of the hemispherical bulges is not more than the thickness of the bionic flow guide plate.
Further, the oscillation atomization nozzle is provided with a plurality of, and the nozzle mounting hole on the fixed plate is provided with a plurality ofly, and a plurality of nozzle mounting holes are along circumference evenly distributed around the through-hole of giving vent to anger, and a plurality of oscillation atomization nozzles install in proper order on the nozzle mounting hole on the fixed plate, and oscillation atomization nozzle's the direction of spraying is towards the atomizing chamber of heat transfer generator.
Furthermore, the oscillation atomizing nozzle is a single-fluid self-oscillation atomizing nozzle based on the bionic surface flow channel, the oscillation atomizing nozzle comprises a flow guide pipe, an oscillation chamber and the bionic surface flow channel, the flow guide pipe is connected with the bionic surface flow channel through the oscillation chamber, and high-temperature liquid is sprayed out after sequentially passing through the flow guide pipe, the oscillation chamber and the bionic surface flow channel; the bionic surface flow channel is a contraction type pipeline with a wide inlet and a narrow outlet, the bionic resistance reducing rings are distributed on the surface of the bionic surface flow channel at equal intervals, each bionic resistance reducing ring is formed by a plurality of hemispherical bulges with the same size in a circumferential distribution mode, and the radius of each hemispherical bulge is 0.05 times of the diameter of the corresponding bionic resistance reducing ring.
Furthermore, the bionic surface and the bionic surface flow channel are both surfaces formed by amplifying and simplifying the drag reduction epidermis of the animal and the hydrophobic surface of the plant in the nature.
A method for strengthening evaporation and heat exchange of fog drops specifically comprises the following steps:
the method comprises the following steps: extracting high-temperature liquid from a liquid storage tank by using a centrifugal pump, and sending the high-temperature liquid into an oscillating atomizing nozzle, wherein the high-temperature liquid has a certain liquid flowing speed after being extracted by the centrifugal pump;
step two: a plurality of oscillating atomizing nozzles are arranged in the heat exchange generator, the oscillating atomizing nozzles spray high-temperature liquid at the same time, and a large amount of high-temperature liquid is quickly converted into fog drops in an atomizing cavity of the heat exchange generator;
step three: the booster fan rapidly introduces the normal temperature gas into the atomizing cavity of the heat exchange generator through the gas inlet below the atomizing cavity;
step four: a bionic guide plate in a spiral rising structure is arranged in the heat exchange generator, and the high-speed normal-temperature gas entering the atomizing cavity moves upwards along the surface of the bionic guide plate, so that the movement of the high-speed normal-temperature gas is regular, paths are increased, and the high-speed normal-temperature gas is subjected to sufficient heat exchange;
step five: a large amount of fog drops generated in the step two contact with the normal-temperature gas which rises along the bionic guide plate at a high speed in the step four and exchange heat, the normal-temperature gas after heat exchange becomes high-temperature gas, the high-temperature gas rises and is discharged from the gas outlet pipeline through the gas outlet, and the low-temperature liquid after heat exchange flows downwards along the bionic guide plate into the low-temperature liquid cavity of the heat exchange generator and is discharged from the liquid pipeline at the bottom of the low-temperature liquid cavity;
step six: the feedback type thermometer on the liquid pipeline transmits measured liquid temperature data to the electric control cabinet, the electric control cabinet adjusts the liquid inlet quantity of the controllable flow valve on the liquid outlet pipe, and the temperature of liquid discharged from the liquid pipeline is controlled through adjustment of the liquid inlet quantity of high-temperature liquid.
The invention has the beneficial effects that:
1. the invention is of controllable temperature type, low resistance, fast heat exchange rate, small volume and small occupation and high gas evaporation efficiency.
2. The high-temperature liquid utilized by the invention has more active molecular motion and smaller acting force among the high-temperature liquid molecules, namely the internal force and the surface tension of the high-temperature liquid are smaller, which is beneficial to the atomization of the high-temperature liquid, and the flow speed of the high-temperature liquid is increased by utilizing the centrifugal pump so as to increase the oscillation degree in the oscillation atomizing nozzle and improve the atomization quality.
3. The invention adopts a plurality of atomizing nozzles to improve the atomizing efficiency and the volume occupied by the liquid phase section, and the gas and the liquid are fully contacted to improve the gas evaporation efficiency, so that the heat exchange efficiency is qualitatively improved.
4. The invention utilizes the booster pump to increase the amount of gas which is introduced into the heat exchange generator in unit time, and increases the gas content in the generator so as to improve the heat exchange efficiency.
5. The invention utilizes the long stroke of the bionic guide plate and reduces the resistance of gas flow, so that the gas generates directional flow and is fully contacted with the fog drops, and the heat exchange efficiency is increased.
6. In practical application, the temperature of the heat exchange liquid and the temperature of the heat exchange gas can be accurately controlled by the control method, and convenience is brought to production and life.
7. The bionic flow guide plate surface is a surface formed by amplifying and simplifying the drag reduction skin of animals in the nature and the hydrophobic surface of plants, and has the advantages of increasing a gas flow path, reducing gas flow resistance, and enabling gas to be fully contacted with fog drops, thereby achieving a better heat exchange effect.
8. The oscillating atomizing nozzle is a single-fluid self-oscillation atomizing nozzle based on a bionic surface flow channel, and can effectively reduce the resistance of gas jet flow and increase the jet flow speed through a non-smooth resistance-reducing surface.
Drawings
Fig. 1 is a schematic view of the overall structure of a device and a method for enhancing the evaporation and heat exchange of mist droplets.
Fig. 2 is a top view of the fixation plate of the present invention.
Fig. 3 is a cross-sectional view of a fixation plate of the present invention.
FIG. 4 is a schematic cross-sectional view of an atomizing nozzle according to the present invention.
Fig. 5 is a schematic structural diagram of a bionic deflector of the invention.
In the figure, 1-a liquid storage tank, 2-a controllable flow valve, 3-a liquid outlet pipe, 4-a centrifugal pump, 5-an oscillation atomizing nozzle, 6-a heat exchange generator, 7-a gas outlet pipeline, 8-a heat preservation shell, 9-a fixed plate, 10-a bionic guide plate, 11-an air inlet, 12-a booster fan, 13-a liquid inlet pipe, 14-a liquid outlet pipeline, 15-a feedback thermometer, 16-an electric control cabinet, 17-a nozzle mounting hole, 18-an air outlet through hole, 19-a flow guide pipe, 20-an oscillation cavity, 21-a bionic surface flow channel and 22-a hemispherical bulge.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1 to 3, a device for enhancing evaporation and heat exchange of droplets comprises a liquid storage tank 1, a controllable flow valve 2, a centrifugal pump 4, a booster fan 12, a feedback thermometer 15, an electric control cabinet 16 and a heat exchange generator 6, wherein the heat exchange generator 6 comprises a heat insulation shell 8, an oscillation atomizing nozzle 5, a fixing plate 9 and a bionic guide plate 10, high-temperature liquid is stored in the liquid storage tank 1, a liquid inlet pipe 13 of the liquid storage tank 1 guides the high-temperature liquid into the liquid storage tank 1, a liquid outlet pipe 3 of the liquid storage tank 1 is connected with the oscillation atomizing nozzle 5 through the centrifugal pump 4, and the controllable flow valve 2 is arranged on the liquid outlet pipe 3 between the liquid storage tank 1 and the centrifugal pump 4 and controls the liquid to be atomized; the inner part of the heat preservation shell 8 is hermetically arranged, a fixed plate 9 and a bionic guide plate 10 are sequentially arranged in the heat preservation shell 8 from top to bottom, the fixed plate 9 and the bionic guide plate 10 divide the inner part of the heat preservation shell 8 into a high-temperature gas cavity, an atomization cavity and a low-temperature liquid cavity from top to bottom, a nozzle mounting hole 17 and an air outlet through hole 18 are formed in the fixed plate 9, the oscillating atomization nozzle 5 penetrates through the side wall of the heat preservation shell 8 and is fixedly mounted on the nozzle mounting hole 17 of the fixed plate 9, and the high-temperature gas cavity and the atomization cavity in the heat preservation shell 8 are communicated through the air outlet through hole 18; the bionic guide plate 10 is a thin plate with a spiral rising structure, and the surface of the bionic guide plate 10 is a bionic surface; the top of the heat-insulating shell 8 is provided with a gas outlet communicated with the high-temperature gas cavity, and the gas outlet is connected with a gas outlet pipeline 7; an air inlet 11 is arranged below the heat preservation shell 8, the air inlet 11 is connected with a booster fan 12 for introducing normal-temperature gas into the atomization cavity, and the air inlet 11 is communicated with the lowest point of the atomization cavity; a liquid pipeline outlet is formed in the bottom of the heat preservation shell 8, the liquid pipeline outlet is connected with a liquid outlet pipeline 14 and discharges liquid in the low-temperature liquid cavity, and a feedback thermometer 15 is arranged on the liquid outlet pipeline 14; the feedback thermometer 15 and the controllable flow valve 2 are electrically connected with the electric control cabinet 16.
The bionic surface is provided with a plurality of bionic attenuation bands, each bionic attenuation band is composed of a row of hemispherical bulges 22, and a plurality of rows of bionic attenuation bands are arranged along the spiral rising track on the bionic surface.
The radius of the hemispherical bulges 22 is not more than the thickness of the bionic deflector 10.
The oscillating atomization nozzle 5 is provided with a plurality of, and the nozzle mounting hole 17 on the fixed plate 9 is provided with a plurality of, and a plurality of nozzle mounting holes 17 are along circumference evenly distributed around the through-hole 18 of giving vent to anger, and a plurality of oscillating atomization nozzles 5 are installed in proper order on the nozzle mounting hole 17 on the fixed plate 9, and the spraying direction of oscillating atomization nozzle 5 is towards the atomizing chamber of heat transfer generator 6.
The oscillation atomizing nozzle 5 is a single-fluid self-oscillation atomizing nozzle 5 based on a bionic surface flow passage 21, the oscillation atomizing nozzle 5 comprises a flow guide pipe 19, an oscillation chamber 20 and the bionic surface flow passage 21, the flow guide pipe 19 and the bionic surface flow passage 21 are connected through the oscillation chamber 20, and high-temperature liquid is sprayed out after sequentially passing through the flow guide pipe 19, the oscillation chamber 20 and the bionic surface flow passage 21; the bionic surface flow channel 21 is a contraction type pipeline with a wide inlet and a narrow outlet, the bionic resistance reducing rings are distributed on the surface of the bionic surface flow channel 21 at equal intervals, each bionic resistance reducing ring is formed by a plurality of hemispherical bulges with the same size in a circumferential distribution mode, and the radius of each hemispherical bulge is 0.05 times of the diameter of the corresponding bionic resistance reducing ring.
The bionic surface and the bionic surface flow passage 21 are both surfaces formed by amplifying and simplifying natural animal drag reduction epidermis and plant hydrophobic surface.
A method for strengthening evaporation and heat exchange of fog drops specifically comprises the following steps:
the method comprises the following steps: extracting high-temperature liquid from the liquid storage tank 1 by using a centrifugal pump 4, and sending the high-temperature liquid into an oscillating and atomizing nozzle 5 for atomization, wherein the high-temperature liquid has a certain liquid flowing speed after being extracted by the centrifugal pump 4; the controllable flow valve 2 is arranged on the liquid outlet pipe and used for controlling the amount of liquid for atomization;
step two: a plurality of oscillating atomizing nozzles 5 are arranged in the heat exchange generator 6, the oscillating atomizing nozzles 5 spray high-temperature liquid at the same time, and a large amount of high-temperature liquid is quickly converted into fog drops in an atomizing cavity of the heat exchange generator 6;
step three: the booster fan 12 rapidly introduces the normal temperature gas into the atomizing cavity of the heat exchange generator 6 through the gas inlet 11 below the atomizing cavity;
step four: a bionic guide plate 10 in a spiral rising structure is arranged in the heat exchange generator 6, and the high-speed normal-temperature gas entering the atomizing cavity moves upwards along the surface of the bionic guide plate 10, so that the movement of the high-speed normal-temperature gas is regular, paths are increased, and the high-speed normal-temperature gas is subjected to sufficient heat exchange; the bionic guide plate 10 has the advantages that the gas flow path is increased, the gas flow resistance is reduced, and gas and fog drops are fully contacted, so that a better heat exchange effect is enhanced, the upper surface of the bionic guide plate 10 is a bionic surface, and the bionic guide plate is a surface formed by amplifying and simplifying the drag reduction skin of animals and the hydrophobic surface of plants in the nature.
Step five: a large amount of fog drops generated in the step two contact with the normal-temperature gas which rises along the bionic flow guide plate 10 at a high speed in the step four and exchange heat, the normal-temperature gas after heat exchange becomes high-temperature gas, the high-temperature gas rises and is discharged from the gas outlet pipeline 7 through the gas outlet, and the low-temperature liquid after heat exchange flows downwards along the bionic flow guide plate 10 to the low-temperature liquid cavity of the heat exchange generator 6 and is discharged from the liquid outlet pipeline 14 at the bottom of the low-temperature liquid cavity;
step six: the feedback type thermometer 15 on the liquid outlet pipeline 14 transmits the measured liquid temperature data to the electric control cabinet 16, the electric control cabinet 16 adjusts the liquid inlet amount of the controllable flow valve 2 on the liquid outlet pipe 3, and the temperature of the liquid discharged from the liquid outlet pipeline 14 is controlled by adjusting the liquid inlet amount of the high-temperature liquid. The control loop can be used to control the temperature of the exiting cryogenic liquid. The temperature of the liquid flowing out is measured by using a feedback thermometer 15, and if the temperature of the liquid flowing out is too high, the controllable flow valve 2 can be controlled by the control cabinet, so that the amount of atomized liquid is reduced, and the temperature of the liquid flowing out is reduced; on the contrary, the atomized liquid amount is increased, and the temperature of the liquid flowing out is increased, so that the temperature control of the discharged liquid and gas is achieved.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (7)
1. The utility model provides a device of reinforcing droplet evaporation heat transfer which characterized in that: the device comprises a liquid storage tank (1), a controllable flow valve (2), a centrifugal pump (4), a booster fan (12), a feedback thermometer (15), an electric control cabinet (16) and a heat exchange generator (6), wherein the heat exchange generator (6) comprises a heat insulation shell (8), an oscillation atomizing nozzle (5), a fixed plate (9) and a bionic guide plate (10), high-temperature liquid is stored in the liquid storage tank (1), the high-temperature liquid is guided into the liquid storage tank (1) through a liquid inlet pipe (13) of the liquid storage tank (1), a liquid outlet pipe (3) of the liquid storage tank (1) is connected with the oscillation atomizing nozzle (5) through the centrifugal pump (4), and the controllable flow valve (2) is arranged on the liquid outlet pipe (3) between the liquid storage tank (1) and the centrifugal pump (4) and controls the atomized liquid; the inner sealing device is characterized in that the heat preservation shell (8) is hermetically arranged, a fixing plate (9) and a bionic guide plate (10) are sequentially arranged in the heat preservation shell (8) from top to bottom, the fixing plate (9) and the bionic guide plate (10) divide the interior of the heat preservation shell (8) into a high-temperature gas cavity, an atomization cavity and a low-temperature liquid cavity from top to bottom, a nozzle mounting hole (17) and an air outlet through hole (18) are formed in the fixing plate (9), an oscillating atomizing nozzle (5) penetrates through the side wall of the heat preservation shell (8) and is fixedly mounted on the nozzle mounting hole (17) of the fixing plate (9), and the air outlet through hole (18) communicates the high-temperature gas cavity and the atomization cavity in the heat preservation shell (8); the bionic guide plate (10) is a thin plate with a spiral rising structure, and the surface of the bionic guide plate (10) is a bionic surface; the top of the heat-insulating shell (8) is provided with a gas outlet communicated with the high-temperature gas cavity, and the gas outlet is connected with a gas outlet pipeline (7); an air inlet (11) is arranged below the heat-insulating shell (8), the air inlet (11) is connected with a booster fan (12) which introduces normal-temperature gas into the atomizing cavity, and the air inlet (11) is communicated with the lowest point of the atomizing cavity; a liquid pipeline outlet is formed in the bottom of the heat-insulation shell (8), the liquid pipeline outlet is connected with a liquid outlet pipeline (14) and discharges liquid in the low-temperature liquid cavity, and a feedback thermometer (15) is arranged on the liquid outlet pipeline (14); the feedback thermometer (15) and the controllable flow valve (2) are electrically connected with the electric control cabinet (16).
2. The device for enhancing evaporative heat transfer of droplets as claimed in claim 1, wherein: the bionic surface is provided with a plurality of bionic attenuation bands, each bionic attenuation band is composed of a row of hemispherical bulges (22), and a plurality of rows of bionic attenuation bands are arranged along a spiral rising track on the bionic surface.
3. The device for enhancing evaporative heat transfer of droplets as claimed in claim 2, wherein: the radius of the hemispherical bulges (22) is not more than the thickness of the bionic deflector (10).
4. The device for enhancing evaporative heat transfer of droplets as claimed in claim 3, wherein: the oscillating atomization nozzle (5) is provided with a plurality of, and nozzle mounting hole (17) on fixed plate (9) are provided with a plurality ofly, and a plurality of nozzle mounting holes (17) are along circumference evenly distributed around air outlet through hole (18), and a plurality of oscillating atomization nozzle (5) are installed in proper order on nozzle mounting hole (17) on fixed plate (9), and the spraying direction of oscillating atomization nozzle (5) is towards the atomizing chamber of heat transfer generator (6).
5. The device for enhancing evaporative heat transfer of droplets as claimed in claim 4, wherein: the oscillating atomizing nozzle (5) is a single-fluid self-excited oscillating atomizing nozzle based on a bionic surface flow channel (21), the oscillating atomizing nozzle (5) comprises a guide pipe (19), an oscillating chamber (20) and the bionic surface flow channel (21), the guide pipe (19) and the bionic surface flow channel (21) are connected through the oscillating chamber (20), and high-temperature liquid is sprayed out after sequentially passing through the guide pipe (19), the oscillating chamber (20) and the bionic surface flow channel (21); the bionic surface flow channel (21) is a contraction type pipeline with a wide inlet and a narrow outlet, a plurality of bionic resistance reducing rings are distributed on the surface of the bionic surface flow channel (21) at equal intervals, each bionic resistance reducing ring is formed by a plurality of hemispherical bulges with the same size in a circumferential distribution mode, and the radius of each hemispherical bulge is 0.05 times of the diameter of the bionic resistance reducing ring.
6. The device for enhancing evaporative heat transfer of droplets as claimed in claim 5, wherein: the bionic surface and the bionic surface flow passage (21) are both surfaces formed by amplifying and simplifying natural animal drag reduction epidermis and plant hydrophobic surfaces.
7. A method for strengthening evaporation and heat exchange of fog drops is characterized by comprising the following steps: the method comprises the following steps: extracting high-temperature liquid from the liquid storage tank (1) by using a centrifugal pump (4) and sending the high-temperature liquid into an oscillating and atomizing nozzle (5), wherein the high-temperature liquid has a certain liquid flowing speed after being extracted by the centrifugal pump (4);
step two: a plurality of oscillating atomizing nozzles (5) are arranged in the heat exchange generator (6), the oscillating atomizing nozzles (5) spray high-temperature liquid at the same time, and a large amount of high-temperature liquid is quickly converted into fog drops in an atomizing cavity of the heat exchange generator (6);
step three: a booster fan (12) rapidly introduces normal-temperature gas into an atomizing cavity of the heat exchange generator (6) through an air inlet (11) below the atomizing cavity;
step four: a bionic guide plate (10) in a spiral rising structure is arranged in the heat exchange generator (6), and the high-speed normal-temperature gas entering the atomizing cavity moves upwards along the surface of the bionic guide plate (10), so that the movement of the high-speed normal-temperature gas is regular, paths are increased, and the high-speed normal-temperature gas is subjected to sufficient heat exchange;
step five: a large amount of fog drops generated in the step two contact with the normal-temperature gas which rises at a high speed along the bionic guide plate (10) in the step four and exchange heat, the normal-temperature gas after heat exchange becomes high-temperature gas, the high-temperature gas rises and is discharged from a gas outlet pipeline (7) through a gas outlet, and low-temperature liquid after heat exchange flows downwards into a low-temperature liquid cavity of the heat exchange generator (6) along the bionic guide plate (10) and is discharged from a liquid outlet pipeline (14) at the bottom of the low-temperature liquid cavity;
step six: the feedback thermometer (15) on the liquid outlet pipeline (14) transmits the measured liquid temperature data to the electric control cabinet (16), the electric control cabinet (16) adjusts the liquid inlet quantity of the controllable flow valve (2) on the liquid outlet pipe (3), and the temperature of the liquid discharged from the liquid outlet pipeline (14) is controlled by adjusting the liquid inlet quantity of the high-temperature liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011385087.0A CN112444140B (en) | 2020-12-01 | 2020-12-01 | Device and method for enhancing evaporation and heat exchange of fog drops |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011385087.0A CN112444140B (en) | 2020-12-01 | 2020-12-01 | Device and method for enhancing evaporation and heat exchange of fog drops |
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| CN112444140A CN112444140A (en) | 2021-03-05 |
| CN112444140B true CN112444140B (en) | 2022-04-22 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB734185A (en) * | 1951-03-27 | 1955-07-27 | Samuel Couzin | Improvements in installations for contacting liquids and gases particularly applicable to water cooling towers |
| KR20010029551A (en) * | 1999-09-01 | 2001-04-06 | 브로시우스 에드워드 제이 | Film fill-pack for inducement of spiraling gas flow in heat and mass transfer contact apparatus with self-spacing fill-sheets |
| CN204034718U (en) * | 2014-07-24 | 2014-12-24 | 中国天辰工程有限公司 | A kind of highly dense spray point disc type liquid distribution trough |
| CN207379320U (en) * | 2017-09-24 | 2018-05-18 | 贵州电力设计研究院 | A kind of fountain gas-water heat exchanger for generating set |
| CN208187173U (en) * | 2018-03-09 | 2018-12-04 | 武城县冠智信息产业技术有限公司 | A kind of multilayer overflow impact helical blade type cooling tower |
| RU2689062C1 (en) * | 2018-05-11 | 2019-05-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" | Chimney-type cooling tower |
| CN110553518A (en) * | 2019-08-27 | 2019-12-10 | 中山大学 | Bionic water condensing device for cooling tower |
| CN211147373U (en) * | 2019-08-01 | 2020-07-31 | 青岛锐牛新能源有限公司 | High-efficient circulation heat transfer device |
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2020
- 2020-12-01 CN CN202011385087.0A patent/CN112444140B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB734185A (en) * | 1951-03-27 | 1955-07-27 | Samuel Couzin | Improvements in installations for contacting liquids and gases particularly applicable to water cooling towers |
| KR20010029551A (en) * | 1999-09-01 | 2001-04-06 | 브로시우스 에드워드 제이 | Film fill-pack for inducement of spiraling gas flow in heat and mass transfer contact apparatus with self-spacing fill-sheets |
| CN204034718U (en) * | 2014-07-24 | 2014-12-24 | 中国天辰工程有限公司 | A kind of highly dense spray point disc type liquid distribution trough |
| CN207379320U (en) * | 2017-09-24 | 2018-05-18 | 贵州电力设计研究院 | A kind of fountain gas-water heat exchanger for generating set |
| CN208187173U (en) * | 2018-03-09 | 2018-12-04 | 武城县冠智信息产业技术有限公司 | A kind of multilayer overflow impact helical blade type cooling tower |
| RU2689062C1 (en) * | 2018-05-11 | 2019-05-23 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Петербургский государственный университет путей сообщения Императора Александра I" | Chimney-type cooling tower |
| CN211147373U (en) * | 2019-08-01 | 2020-07-31 | 青岛锐牛新能源有限公司 | High-efficient circulation heat transfer device |
| CN110553518A (en) * | 2019-08-27 | 2019-12-10 | 中山大学 | Bionic water condensing device for cooling tower |
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| CN112444140A (en) | 2021-03-05 |
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