CN110822604A - Falling film humidifier with built-in heat source and working method thereof - Google Patents
Falling film humidifier with built-in heat source and working method thereof Download PDFInfo
- Publication number
- CN110822604A CN110822604A CN201911105432.8A CN201911105432A CN110822604A CN 110822604 A CN110822604 A CN 110822604A CN 201911105432 A CN201911105432 A CN 201911105432A CN 110822604 A CN110822604 A CN 110822604A
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- liquid
- heat source
- distributor
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011552 falling film Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 239000012530 fluid Substances 0.000 claims abstract description 15
- 239000010408 film Substances 0.000 claims abstract description 14
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000007791 dehumidification Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 abstract description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/02—Air-humidification, e.g. cooling by humidification by evaporation of water in the air
- F24F6/08—Air-humidification, e.g. cooling by humidification by evaporation of water in the air using heated wet elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Humidification (AREA)
Abstract
The invention discloses a falling film humidifier with a built-in heat source and a working method thereof, and belongs to the technical field of humidification and dehumidification. This humidifier mainly includes barrel, roof and bottom plate, its characterized in that: the inside of the cylinder body is positioned between the top plate and the bottom plate and is also provided with a distributor, an upper plate and a collector from top to bottom, and a plurality of heat exchange tubes are arranged between the distributor and the collector. After liquid enters the humidifier, a good liquid film can be formed on the outer wall of the heat exchange tube, the liquid and hot fluid in the heat exchange tube can effectively exchange heat, and the temperature of the liquid and the hot fluid continuously rises along with the reduction of gravity, so that the liquid and the air flow between the heat exchange tubes can be subjected to efficient heat and mass transfer. The invention can ensure that the heat is fully absorbed by the two-phase fluid by humidifying in a way of internally arranging the heat source, thereby not only improving the heat exchange efficiency, but also simplifying the equipment space and reducing the energy consumption of a humidifying system. The humidifier has the advantages of compact and novel structure, high heat exchange efficiency and small pressure drop, and has great significance for energy conservation, emission reduction and industrial upgrading.
Description
Technical Field
The invention relates to the technical field of humidification and dehumidification, in particular to a falling film humidifier with a built-in heat source.
Background
With the continuous improvement of living standard and industrial production level of people, environmental regulation and control become more and more important, and air temperature and humidity are always paid attention to as important indexes of the environment. The use of humidifiers to regulate air temperature and humidity is an effective approach. Patent No. CN201510042152.2 discloses a spray humidifier, which has a small pressure drop and a simplified structure, but has low heat exchange efficiency and poor humidification effect. Subsequently, CN201611214327.4 discloses a stuffing humidifier suitable for seawater evaporation and concentration system, which has high heat exchange efficiency, large humidification amount, and large pressure drop. And the spraying humidifier and the filler humidifier both adopt external heating type energy supply, so that the occupied area of equipment is large, the investment amount is high, and the operation is complex.
Under the large background of energy conservation and emission reduction and industrial upgrading, how to improve the heat exchange efficiency of the humidifier, reduce energy consumption and accelerate equipment upgrading is a problem which needs to be solved urgently.
Disclosure of Invention
The invention provides a falling film humidifier with a built-in heat source aiming at the defects of the existing humidifier, the humidifier has the advantages of compact and novel structure, high heat exchange efficiency and pressure reduction, and is a good supplement for industrial upgrading and upgrading.
The utility model provides a built-in falling film humidifier of heat source, mainly includes the barrel, and the barrel has bottom plate and roof, its characterized in that: a liquid outlet is arranged in the center of the bottom plate, and a heat source inlet is arranged in the center of the top plate; the wall surface of the upper part of the cylinder body is respectively provided with an air outlet and a plurality of symmetrical liquid inlets from top to bottom; the wall surface of the lower part of the cylinder body is respectively provided with a plurality of symmetrical air inlets and a single heat source outlet from top to bottom; a distributor, an upper plate and a collector are sequentially arranged between the top plate and the bottom plate in the cylinder from top to bottom; wherein the distributor is positioned between the air outlet and the liquid inlet; wherein the upper plate is positioned at the upper part of the cylinder body and below the liquid inlet; wherein the collector is located between the air inlet and the heat source outlet; the upper plate is distributed with a plurality of nozzles; the distributor and the collector are in a cavity structure; a plurality of heat exchange tubes are arranged between the distributor and the collector, the heat exchange tubes correspond to the nozzles one by one, and the heat exchange tubes penetrate through the nozzles; the upper top surface of the distributor is communicated with the heat source inlet, and the lower bottom surface of the distributor is communicated with the upper part of the heat exchange tube; the upper top surface of the collector is communicated with the lower part of the heat exchange tube, and the lower bottom surface of the collector is communicated with the heat source outlet; wherein a plurality of air outlet holes are arranged on the distributor around the heat exchange tube; a plurality of liquid outlet holes are formed in the collector and positioned around the heat exchange tube; the upper plate is also distributed with a plurality of gas channel pipes which are in one-to-one correspondence with the air outlet holes on the distributor.
The working method of the falling film humidifier with the built-in heat source is characterized by comprising the following working processes: firstly, hot fluid enters a cavity of a distributor through a heat source inlet on a top plate, then uniformly enters a heat exchange tube, and the hot fluid after heat exchange is collected in a collector and finally discharged from a heat source outlet; the low-temperature liquid enters between the distributor and the upper plate from the liquid inlet, is sprayed on the outer wall of the heat exchange tube through the nozzle to form a uniform liquid film, fully exchanges heat with hot fluid in the heat exchange tube along with the descending of the liquid film, continuously rises in temperature, is finally collected on the upper surface of the collector, enters the bottom of the cylinder through the liquid outlet hole, and is finally discharged out of the cylinder through the liquid outlet on the bottom plate; air with low temperature and low humidity enters the space between the tube bundles consisting of the plurality of heat exchange tubes through the air inlet at the bottom of the cylinder, and in the process of air rising, the temperature and the humidity are continuously increased through heat and mass transfer with the liquid film, and finally, the air with high temperature and high humidity firstly enters the gas channel tubes on the upper plate, then is converged into the top space of the cylinder through the air outlet holes on the distributor and finally is discharged from the air outlet.
The falling film humidifier with the built-in heat source is characterized in that: the upper plate is of a disc structure; the nozzles are uniformly distributed in a ring shape, or uniformly distributed in a square shape, or uniformly distributed in a triangular shape, so that gas and liquid in the cylinder body are uniformly contacted.
The falling film humidifier with the built-in heat source is characterized in that: the liquid will form a certain liquid height between the distributor and the upper plate, and in order to avoid the liquid from the liquid inlet outlet and the liquid on the upper plate from blocking the steam channel, the upper plate is required to extend above the gas channel pipe, but is lower than the distributor.
The falling film humidifier with the built-in heat source is characterized in that: the liquid entering the cylinder body is sprayed onto the heat conducting wires from the nozzles uniformly distributed on the upper plate to form a good liquid film, and the nozzles are tapered nozzles.
The falling film humidifier with the built-in heat source is characterized in that: the gas channel pipes are uniformly distributed in a circular shape, and a radial included angle formed between the gas channel pipes and the liquid inlet on the horizontal section is 30-45 degrees, so that liquid is prevented from entering the gas channel pipes and further blocking gas.
The falling film humidifier with the built-in heat source is characterized in that: the heat exchange tubes are spaced 2-4 times their diameter to provide sufficient heat exchange area and flow space for air between the tube bundles.
The falling film humidifier with the built-in heat source is characterized in that: the liquid outlet holes are of a circular structure and are distributed in a circular and uniform mode so as to reduce resistance and enable liquid collected from the outer wall of the heat exchange tube to be discharged uniformly.
The invention has the beneficial effects that: the invention discloses a falling film humidifier with a built-in heat source, which has the advantages of simple and compact structure, high heat exchange efficiency, low pressure drop and simplified manufacturing process. After liquid enters the humidifier, a good liquid film can be formed on the outer wall of the heat exchange tube, the liquid and hot fluid in the heat exchange tube can effectively exchange heat, the temperature of the liquid and the hot fluid continuously rises along with the falling of gravity, and therefore the liquid and the air can efficiently transfer heat and mass, and the flow resistance is reduced. The humidification is carried out in a heat source built-in mode, so that the heat can be fully absorbed by the two-phase fluid, the heat exchange efficiency is improved, the equipment space is simplified, the energy consumption of a humidification system is reduced, and the humidification system has great significance in energy conservation, emission reduction and industrial upgrading.
Drawings
Fig. 1 is a schematic three-dimensional structure of a proposed heat source built-in falling film humidifier;
fig. 2 is a front view of the proposed heat source built-in falling film humidifier;
fig. 3 is a top view of the proposed heat source built-in falling film humidifier;
FIG. 4 is an enlarged partial view of the upper portion of the humidifier;
fig. 5 is a partially enlarged view of a lower portion of the humidifier.
Number designation in the figures: 1-a cylinder body; 2-a distributor; 3-liquid inlet; 4-upper plate; 5, heat exchange tubes; 6-an air inlet; 7-liquid outlet holes; 8-a collector; 9-a liquid outlet; 10-a base plate; 11-outlet of heat source; 12-a nozzle; 13-a gas passage tube; 14-air outlet holes; 15-air outlet; 16-a top plate; 17-inlet of heat source
Detailed description of the invention
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to fig. 1, 2, 3, 4 and 5.
The specific implementation method of the invention is as follows: firstly, hot fluid enters the cavity of the distributor 2 through a heat source inlet 17 on the top plate 16, then uniformly enters the heat exchange tubes 5, and the hot fluid after heat exchange is collected in a collector 8 and finally discharged from a heat source outlet 11.
Low-temperature liquid enters the space between the distributor 2 and the upper plate 4 from the liquid inlet 3, is sprayed on the outer wall of the heat exchange tube 5 through the nozzle 12 to form an even liquid film, fully exchanges heat with hot fluid in the heat exchange tube 5 along with the falling of the liquid film, the temperature is continuously increased, the liquid is finally collected on the upper surface of the collector 8, enters the bottom of the barrel 1 through the liquid outlet hole 7, and finally is discharged out of the barrel 1 through the liquid outlet 9 on the bottom plate 10.
The low-temperature and low-humidity air enters the space between the tube bundles consisting of the plurality of heat exchange tubes 5 through the air inlet 6 at the bottom of the cylinder 1, the temperature and the humidity are continuously increased through the heat and mass transfer with the liquid film in the process of air rising, and finally the high-temperature and high-humidity air firstly enters the gas channel tubes 13 on the upper plate 4, then is collected to the top space of the cylinder 1 through the air outlet holes 14 on the distributor 2 and finally is discharged from the air outlet 15.
It should be noted that the equivalent scaling of the structure of the present invention is within the protection scope of the present invention, and when implementing the falling film humidifier with built-in heat source proposed by the present invention, the flow rate and the flow rate of the nozzle should be paid special attention, the film forming flow rate should be ensured, and the gas flow rate should be adjusted according to the flow rate of the liquid film, so as to achieve the high-efficiency humidification.
Claims (8)
1. A falling film humidifier with a built-in heat source mainly comprises a cylinder body (1), wherein the cylinder body (1) is provided with a bottom plate (10) and a top plate (16), and is characterized in that:
a liquid outlet (9) is arranged at the center of the bottom plate (10), and a heat source inlet (17) is arranged at the center of the top plate (16);
the wall surface of the upper part of the cylinder body (1) is respectively provided with an air outlet (15) and a plurality of symmetrical liquid inlets (3) from top to bottom;
the wall surface of the lower part of the cylinder body (1) is respectively provided with a plurality of symmetrical air inlets (6) and a single heat source outlet (11) from top to bottom;
the distributor (2), the upper plate (4) and the collector (8) are sequentially arranged between the top plate (16) and the bottom plate (10) from top to bottom in the cylinder body (1); wherein the distributor (2) is positioned between the air outlet (15) and the liquid inlet (3); wherein the upper plate (4) is positioned at the upper part of the cylinder body (1) and below the liquid inlet (3); wherein the collector (8) is located between the air inlet (6) and the heat source outlet (11);
the upper plate (4) is distributed with a plurality of nozzles (12); the distributor (2) and the collector (8) are in a cavity structure; a plurality of heat exchange tubes (5) are arranged between the distributor (2) and the collector (8), the heat exchange tubes (5) correspond to the nozzles one by one, and the heat exchange tubes (5) penetrate through the nozzles (12);
the upper top surface of the distributor (2) is communicated with a heat source inlet (17), and the lower bottom surface of the distributor (2) is communicated with the upper part of the heat exchange tube (5); the upper top surface of the collector (8) is communicated with the lower part of the heat exchange tube (5), and the lower bottom surface of the collector (8) is communicated with the heat source outlet (11); wherein a plurality of air outlet holes (14) are arranged on the distributor (2) around the heat exchange tube (5); a plurality of liquid outlet holes (7) are formed in the collector (8) and positioned around the heat exchange tube (5);
the upper plate (4) is also distributed with a plurality of gas channel pipes (13), and the gas channel pipes (13) are in one-to-one correspondence with the gas outlet holes (14) on the distributor (2).
2. A heat source built-in falling film humidifier according to claim 1, wherein:
the upper plate (4) is of a disc structure;
the nozzles (12) are uniformly distributed in a ring shape, or uniformly distributed in a square shape, or uniformly distributed in a triangular shape.
3. A heat source built-in falling film humidifier according to claim 1, wherein:
the nozzle (12) is a convergent nozzle.
4. A heat source built-in falling film humidifier according to claim 1, wherein:
the gas channel pipes (13) are uniformly distributed in a circular shape, and the radial included angle formed between the gas channel pipes and the liquid inlet (3) on the horizontal section is 30-45 degrees.
5. A heat source built-in falling film humidifier according to claim 1, wherein:
the upper plate (4) extends above the gas channel pipe (13) and is lower than the distributor (2).
6. A heat source built-in falling film humidifier according to claim 1, wherein:
the distance between the heat exchange pipes (5) is 2-4 times of the diameter of the heat exchange pipes.
7. A heat source built-in falling film humidifier according to claim 1, wherein:
the liquid outlet holes (7) are of circular hole structures and are distributed in a circular and uniform manner.
8. The method of operating a falling film humidifier with a built-in heat source according to claim 1, comprising the steps of:
firstly, hot fluid enters a cavity of a distributor (2) through a heat source inlet (17) on a top plate (16), then uniformly enters a heat exchange tube (5), and the hot fluid after heat exchange is collected in a collector (8) and finally discharged from a heat source outlet (11);
the low-temperature liquid enters the space between the distributor (2) and the upper plate (4) from the liquid inlet (3), is sprayed on the outer wall of the heat exchange tube (5) through the nozzle (12) to form a uniform liquid film, fully exchanges heat with the hot fluid in the heat exchange tube (5) along with the falling of the liquid film, the temperature is continuously increased, the liquid is finally collected on the upper surface of the collector (8), enters the bottom of the cylinder (1) through the liquid outlet (7), and finally is discharged out of the cylinder (1) through the liquid outlet (9) on the bottom plate (10);
the air with low temperature and low humidity enters the space between tube bundles consisting of a plurality of heat exchange tubes (5) through an air inlet (6) at the bottom of the cylinder body (1), the temperature and the humidity are continuously increased through heat and mass transfer with a liquid film in the process of air rising, and finally the air with high temperature and high humidity enters the gas channel tube (13) on the upper plate (4) firstly, then is collected to the top space of the cylinder body (1) through an air outlet (14) on the distributor (2), and finally is discharged from an air outlet (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911105432.8A CN110822604A (en) | 2019-11-13 | 2019-11-13 | Falling film humidifier with built-in heat source and working method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911105432.8A CN110822604A (en) | 2019-11-13 | 2019-11-13 | Falling film humidifier with built-in heat source and working method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110822604A true CN110822604A (en) | 2020-02-21 |
Family
ID=69554708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911105432.8A Pending CN110822604A (en) | 2019-11-13 | 2019-11-13 | Falling film humidifier with built-in heat source and working method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110822604A (en) |
-
2019
- 2019-11-13 CN CN201911105432.8A patent/CN110822604A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202092258U (en) | Two-stage evaporation cooling air conditioner unit combining plate-type indirect mode and inclined-type spraying filler direct mode | |
| CN204865457U (en) | Wet flue gas desulfurization carries torrent pipe bars device and desulfurization absorption tower of effect | |
| CN207703026U (en) | A kind of reverse-flow cooling tower geomantic omen matching enhanced heat exchange system | |
| CN211204320U (en) | Falling film humidifier with built-in heat source | |
| CN211695949U (en) | Atomizing cooling tower | |
| CN106090975B (en) | Spray absorption type flue gas waste heat recovery system | |
| CN110822604A (en) | Falling film humidifier with built-in heat source and working method thereof | |
| CN104501624B (en) | Evaporative type cooler and surface-type condensing system united power plant cooling system | |
| CN211119838U (en) | Internal heating type multi-wire humidifier | |
| CN215855992U (en) | High-efficiency energy-saving distillation device | |
| CN108613566A (en) | A kind of internal-circulation type environment protection water cooling tower | |
| CN214426136U (en) | Hierarchical type micro-mist filler humidifier | |
| CN101650135A (en) | Air cooling condenser spraying cooling system and control method | |
| CN201476607U (en) | Air cooling condenser spray de-temperature device | |
| CN113720170A (en) | Porous throttle air inlet structure and cooling tower | |
| CN110454895B (en) | Indirect-direct evaporation type air conditioner based on annular water distribution | |
| CN204421686U (en) | The cooling device that the evaporative cooling being applicable to power plant is combined with surperficial condensing | |
| CN113280647A (en) | Water-saving structure of wet cooling tower | |
| CN207379317U (en) | Water cooling tower | |
| CN108759507B (en) | A kind of the evaporation pre-cooling air inlet air cooling tower and its working method of filler rebuilding | |
| CN202361833U (en) | Energy-saving environmental-friendly cooling tower | |
| CN202470807U (en) | Packless natural ventilation cooling tower | |
| RU2674857C1 (en) | Combined ejection-tower cooling tower | |
| CN212320465U (en) | High-efficiency cooling tower | |
| CN204757213U (en) | Evaporation cooling and absorption heat pump unite air conditioning system suitable for power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |