CN114576756A - Plateau solar wet film constant-temperature humidifying method and device - Google Patents
Plateau solar wet film constant-temperature humidifying method and device Download PDFInfo
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- CN114576756A CN114576756A CN202210253441.7A CN202210253441A CN114576756A CN 114576756 A CN114576756 A CN 114576756A CN 202210253441 A CN202210253441 A CN 202210253441A CN 114576756 A CN114576756 A CN 114576756A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- 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
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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- 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
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
- F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
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- 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
- F24F13/24—Means for preventing or suppressing noise
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0046—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater using natural energy, e.g. solar energy, energy from the ground
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
- F24F8/117—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering
- F24F8/133—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using wet filtering by direct contact with liquid, e.g. with sprayed liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/54—Free-cooling systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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Abstract
The invention discloses a plateau solar wet film constant-temperature humidifying device which comprises an outdoor heat absorption water tank, an indoor tank body and a circulating water pump, wherein the outdoor heat absorption water tank is arranged outside the tank body; the heat absorption water tank obtains a heat source by utilizing solar radiation or the box body through the heat exchange coil pipe, and the circulating water pump is utilized to provide power to convey hot water into the box body, so that humid air is prepared and indoor humidification is achieved. The invention changes the mode that the traditional wet film is subjected to isenthalpic humidification in winter to reduce the air temperature, and solves the problem of cold wind caused by humidification in winter of the traditional wet film; meanwhile, the problems that the traditional wet film needs to consume electric energy for heating when being humidified in winter and bacteria are easy to breed on the surface are solved, so that an energy-saving, efficient and healthy wet environment is provided for the plateau crowd indoors.
Description
Technical Field
The invention relates to the technical field of plateau area constant temperature humidification, in particular to a plateau solar energy wet film constant temperature humidification method and device.
Background
The plateau rainfall is rare, the evaporation capacity is large, the air water content is low, and the air is abnormally dry. Wherein, the average relative humidity in the northwest of Qinghai-Tibet plateau is between 29% and 40%, the relative humidity in winter of Lhasa is even lower than 10%, and plateau people often suffer from throat dryness and itching, nose bleeding, skin wrinkling and peeling. In winter, the air temperature is increased due to indoor heating, so that the indoor air is drier, and the working efficiency and the sleeping quality of indoor personnel are seriously influenced.
Various types of humidifying equipment, such as an electric heating humidifier, appear in the market in recent years, although the technology is simple, the energy consumption is high, the situation of energy shortage at present is not easily relieved, and the risk of drying is caused; although the ultrasonic humidifier has small volume and wide application range, the ultrasonic humidifier has large water mist particles and contains a large amount of water scales and bacteria, which are harmful to human health; and wet membrane humidifier humidification often needs to adopt the electric heat silk to heat the air winter, avoids the air to take place "cold wind" that isenthalpic humidification process air cooling brought and feels, avoids arousing indoor personnel's uncomfortable problem, and this can increase the consumption of electric energy undoubtedly, otherwise needs to restrict the application of wet membrane humidifier to personnel's place district in winter, but wet membrane itself has advantages such as atomizing is complete, simple structure, suitable maintenance.
In conclusion, how to solve the problems of cold wind and high energy consumption caused by the humidification of the wet film in winter is the key for changing the plateau drying condition by utilizing the humidification of the wet film in winter.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a constant-temperature humidifying method and a constant-temperature humidifying device for a plateau solar wet film, which change the mode that the traditional wet film is subjected to isenthalpic humidification in winter to reduce the air temperature and solve the problem of cold wind caused by humidification in winter of the traditional wet film; meanwhile, the problems that the traditional wet film needs to consume electric energy for heating when being humidified in winter and bacteria are easy to breed on the surface are solved, so that an energy-saving, efficient and healthy wet environment is provided for the plateau crowd indoors.
In order to achieve the purpose, the invention adopts the technical scheme that:
a plateau solar wet film constant temperature humidifying device comprises an outdoor heat absorption water tank, an indoor box body 1 and a circulating water pump, wherein the outdoor heat absorption water tank is arranged outside the box body; the heat absorption water tank obtains a heat source through solar radiation or the box body 1 through a heat exchange coil, and the circulating water pump provides power to convey hot water into the box body 1 to prepare humid air so as to humidify the room.
The heat absorption water tank comprises a U-shaped heat insulation box 24 and a glass column 21, wherein the glass column 21 is formed by sealing two ends of an outer glass shell 22 and an inner glass shell 23, a space between the outer glass shell 22 and the inner glass shell 23 is vacuumized, the surface of the inner glass shell 23 is plated with a heat absorption film, and a metal oxide with the thickness of 3mm is used for absorbing solar radiation heat and heating water in the glass column 21.
The U-shaped heat preservation box 24 is embedded into an opening part above the glass column 21, the U-shaped heat preservation box is made of rubber made of polyurethane materials, the total length is 30cm, the thickness is about 2mm, the U-shaped heat preservation box is sleeved outside the glass column 21, and the distance between the lower end of the U-shaped heat preservation box 24 and the upper end of the glass column 21 is 10 cm; the distance between the top of the U-shaped heat preservation box 24 and the opening at the upper end of the glass column 21 is 25cm, so that the obtained hot water is preserved; in order to keep the temperature of the obtained hot water, gas generated by heating the glass column 21 is exhausted from an exhaust pipe 26, and the exhaust pipe 26 is arranged at the top of the U-shaped heat preservation box 24; the temperature sensor 25 is arranged in the heat absorption water tank and used for measuring the water temperature in the heat absorption water tank, the heat absorption water tank conveys high-temperature hot water into a room through a first water supply pipe 31, a ball float valve 27 is arranged in the heat absorption water tank, the ball float valve 27 is electrically connected with a first electric water inlet valve 30, the first electric water inlet valve 30 is arranged on a tap water pipeline 28, a softening device 29 is installed on the tap water pipeline 28, the softening device 29 is made of sodium ion exchange resin, and calcium and magnesium ions in the water are replaced by sodium ions.
The indoor box body 1 comprises an upper layer box body 2 and a lower layer box body 3, the upper layer box body 2 and the lower layer box body 3 are separated through a partition plate 4, a fixing device 37 is welded at the top of the upper layer box body 2, a third water supply pipe 36 is fixed at the lower part of the fixing device 37, a water spraying nozzle 38 is installed at the bottom of the third water supply pipe, and water is sprayed onto a wet curtain 6 below the third water supply pipe to form a high-temperature hot water film; the wet curtain 6 is made of a composite wet film material, is rectangular in shape, and is fixed by a cylindrical wet film fixing device 7 made of stainless steel.
The rear side surface of the upper layer box body 2 is fixedly provided with a fan 8 which is used for filtering indoor air at an inlet of an air pipe 46 through an air filter 47, and the filtered indoor air is delivered to a wet curtain 6 to be contacted with high-temperature hot water sprayed by a water spraying nozzle 38 to obtain humid air, and the humid air is delivered to the indoor through an air outlet 51 opposite to the fan 8; the fan 8 is a 3-level adjustable anti-corrosion axial flow fan.
A silencer 48 is arranged in the air pipe 46 to reduce noise of the circulating air, and a humidity sensor 49 is used for detecting the humidity of the air in the air pipe 46 and adjusting the rotating speed of the fan 8.
An adjustable shutter 49 is arranged in the air outlet 51 to adjust an indoor generated wind field.
The bottom of the upper-layer box body 2 is provided with a heat exchange coil 10; the heat exchange coil 10 is a serpentine pipeline and is horizontally arranged, and is made of a PERT thin hose with high heat exchange performance; the water inlet 11 and the water outlet 13 on the two ends of the heat exchange coil 10 are connected with a household solar water heater pipeline or a hot water pipe network, the heat exchange coil 10 exchanges heat to heat surrounding liquid to prepare high-temperature liquid, a ball float valve 9 is arranged on the liquid 5 at the bottom of the upper-layer box body 2 to detect the liquid level and control the water replenishing of a system, a drain pipe 14 is arranged at the bottom of the liquid level, and a drain valve 15 is arranged on the drain pipe 14 to facilitate the equipment to discharge and replace the liquid 5; wherein the liquid 5 is softened tap water.
The partition plate 4 is provided with a small hole, the aperture of the small hole is slightly larger than that of the gravity heat pipe 19, and a rubber snap ring 20 is fixed at the edge inside the small hole, so that the gravity heat pipe is conveniently fixed.
The gravity heat pipe 19 is arranged in the lower box body 3, the gravity heat pipe 19 is in an upper arc-shaped cylinder and a lower arc-shaped cylinder and is vertically arranged, and the rubber snap ring 20 is fixed at the position 1/3 away from the top of the gravity heat pipe 19; the gravity heat pipe 19 is fixed on the small hole of the partition plate 4 through a rubber cutting sleeve 20; one part of the heat pipe 19 is positioned at the bottom of the liquid in the upper-layer box body 2, the other part of the heat pipe is positioned in a sewage tank 16 of the lower-layer box body 3, a sewage water inlet 17 and a sewage water outlet 18 are arranged at two ends of the sewage tank 16, domestic waste hot water enters from the sewage water inlet 17, heat is exchanged in the sewage tank 16 through the gravity heat pipe 19 to heat the liquid in the upper-layer box body 2, and then the domestic waste hot water is connected into a sewer from the sewage water outlet 18 through a pipeline; the sewage tank 16 is a rectangular channel made of stainless steel materials, the distance from the bottom of the sewage tank 16 to the bottom of the gravity heat pipe 19 is about 15mm, and foam heat preservation is arranged on the left side, the right side and the lower portion of the sewage tank.
The first circulating water pump 43 is disposed in the horizontal pipe of the first water supply pipe 31, communicates with the liquid 5 through the one-way electric valve 44, and is spaced from the bottom 2/5 of the liquid 5.
The second circulating water pump 34 is disposed in a horizontal line of the second water supply pipe 33, and is connected to a third water supply pipe 36 on the top of the upper tank 2 after passing through a second electromagnetic water inlet valve 35.
The water inlet end of the second circulating water pump 34 is connected with the water outlet 12 side of the heat exchange coil 10 through the second water supply pipe 33, the hot water electric reversing valve 32 and the fourth water supply pipe 39, the water outlet end of the second circulating water pump 34 passes through the second electromagnetic water inlet valve 35 and then reaches the third water supply pipe 36 which is horizontally arranged, and hot water is sprayed onto the wet curtain 6 through the water spraying nozzle 38 to humidify indoor air.
A use method of a plateau solar wet film constant-temperature humidifying device comprises the following steps;
when the water temperature of the outdoor heat absorption water tank cannot meet the requirement, the first circulating water pump 43 is started to be responsible for replenishing liquid to the upper tank body 2, and the heat absorption water tank is used for storing water; when the liquid 5 in the upper water tank 2 is lower than the set water level, the ball float valve 9 controls the first circulating water pump 43 to start, the electric hot water reversing valve 32 is in a closed state at the moment, the first water supply pipe 31 extends to the bottom of the glass column 21 to pump water, the electric one-way valve 44 supplies water to the bottom of the upper tank 2 to supply water to the evaporated liquid 5, and the ball float valve 9 controls the first circulating water pump 43 to close after the water level requirement is met, so that the water supply process is completed;
the second circulation water pump 34 performs indoor hot water circulation at this time, one end of the second circulation water pump 34 is connected to the side of the water outlet 12 of the heat exchange coil 10 through the second water supply pipe 33, the hot water electric reversing valve 32 and the fourth water supply pipe 39 to pump high-temperature hot water to avoid poor circulation with make-up water, and the other end of the second circulation water pump 34 sprays the hot water onto the wet curtain 6 through the sprinkler 38 after passing through the third water supply pipe 36 to humidify indoor air;
when the water temperature of the outdoor heat absorption water tank meets the requirement, the temperature sensor 25 controls the hot water electric reversing valve 32 to be communicated with the first water supply pipe 31 and to be closed to be communicated with the fourth water supply pipe 39, the third electric water inlet valve 42 is closed, one end of the second circulating water pump 34 is connected to the bottom of the glass column 21 through the first water supply pipe 31, high-temperature hot water is pumped, the high-temperature hot water passes through the hot water electric reversing valve 32 and the second water supply pipe 33 and is sent to the third water supply pipe 36, and the hot water is sprayed onto the wet curtain 6 through the water spraying nozzle 29 to humidify indoor air.
The invention has the beneficial effects that:
1. the problem of "cold wind" sense that traditional wet film humidification in winter brought has been eliminated: the water sprayed on the wet film is heated in advance through solar radiation or a heat exchange coil and a heat pipe, so that the temperature of the water is higher than the indoor temperature, the air is humidified, hot water absorbs the temperature of the air, the temperature of the air is not absorbed, the aim of not being cooled when the air is humidified is fulfilled, the problem that the humidification of the wet film in winter brings 'cold air' is solved, and the blown air is more comfortable.
2. High-efficiency and energy-saving: the solar energy resource is fully utilized to heat water in the heat absorption water tank by combining the characteristic of strong plateau local solar radiation, the surface of a glass shell in the lower layer of the heat absorption water tank is plated with a high-efficiency heat absorption film, and the upper layer of the heat absorption water tank adopts a U-shaped heat preservation box, so that the heat absorption efficiency and the heat preservation effect are improved. When outdoor solar radiation can not meet the requirement, the heat exchange coil pipe is adopted indoors to heat the water body.
3. One case is multi-purpose: the heat absorption water tank can absorb solar radiation heat, store water and preserve heat, and prolong the heat preservation time of hot water.
4. The gravity heat pipe technology is adopted, so that the utilization efficiency of waste heat is increased: the heat pipe technology is adopted indoors, the upper part of the heat pipe is communicated with the upper layer box body, the lower part of the heat pipe absorbs heat of various waste hot water in life, and the upper part of the heat pipe heats water in the upper layer box body, so that the utilization of waste heat is increased, and the system is more energy-saving.
5. The intelligent regulation increases humidification efficiency. With the proper increase of the wind speed, the heat and mass exchange coefficient is increased, and the humidifying effect is improved. The fan in the air circulation is adjustable in three stages, a humidity sensor is installed in the air pipe, the humidity sensor senses air humidity, the rotating speed of the fan is automatically adjusted, the air flow rate is changed, and the indoor humidification efficiency is improved.
6. The noise is low: the humidifying device adopts two fans which are connected and fixed on the upper-layer box body through rubber, and a silencer is installed on an air pipeline, so that the influence of vibration and noise on the work and rest of indoor personnel is avoided.
7. Personalized air supply setting: the air outlet adopts adjustable tripe, and indoor personnel can adjust humid air's export direction by oneself according to the demand, have avoided the uncomfortable that the blow-directly brought.
8. Has the bactericidal effect: corresponding medicines are added into the water bodies of the transparent glass water tank and the upper layer tank body, so that the sterilization effect can be achieved, and particularly in winter, the water on the wet film filters air to eliminate partial viruses; meanwhile, the PH value in the water body is controlled, and the algae breeding is prevented.
9. Adopts a novel composite wet film material to inhibit mildew and bacteria breeding: the wet film material adopts a composite wet film, and has the advantages of convenient cleaning of the metal wet film, difficult mildew and bacteria breeding, long service life, high water content of the film body and good humidifying effect.
11. The wet film has the advantages that: the wet film humidifier has the function of purifying air, purifies the air while humidifying, and does not pollute the air by the phenomenon of white powder; the wet film humidifier has no water mist, and can not generate recondensation and dewing phenomena. Only a small amount of electric energy is consumed by the fan and the water pump in the device, and the device has a remarkable energy-saving effect.
Drawings
Fig. 1 is a front view of the solar wet film constant temperature humidifying device of the present invention.
Fig. 2 is a side view of the indoor box body of the solar wet film constant-temperature humidifying device.
FIG. 3 is a schematic view of a humidifying structure of a box body of the solar wet film constant temperature humidifying device.
FIG. 4 is a schematic view of the structure of the heat absorption water tank of the solar wet film constant temperature humidifying device.
The reference numbers in the figures are: 1-box body, 2-upper-layer box body, 3-lower-layer box body, 4-partition plate, 5-liquid, 6-wet film, 7-wet film fixing device, 8-fan, 9-ball float valve, 10-heat exchange coil, 11-water inlet, 12-water outlet, 13-connector, 14-water discharge pipe, 15-water discharge valve, 16-sewage tank, 17-sewage water inlet, 18-sewage water outlet, 19-heat pipe, 20-rubber snap ring, 21-vacuum electric glass column, 22-glass outer shell, 23-glass inner shell, 24-U-shaped heat preservation box, 25-temperature sensor, 26-air discharge pipe, 27-ball float valve, 28-tap water pipe, 29-softening device, 30-first electromagnetic water inlet valve, water inlet valve, 31-a first water supply pipe, 32-a hot water electric reversing valve, 33-a second water supply pipe, 34-a second circulating water pump, 35-a second electromagnetic water inlet valve, 36-a third water supply pipe, 37-a fixing device, 38-a water spraying nozzle, 39-a fourth water supply pipe, 40-a water return valve, 41-a water return pipe, 42-a third electromagnetic water inlet valve, 43-a first circulating water pump, 44-an electric one-way valve, 45-a wall body, 46-an air pipe, 47-an air filter, 48-a silencer, 49-a humidity sensor, 50-a rubber interface, 51-an air outlet and 52-an adjustable shutter.
Detailed Description
The present invention will be described in further detail with reference to examples.
The invention relates to a constant temperature humidifying method of a solar wet film, which comprises the steps of heating by utilizing solar radiation or other heat sources to obtain high-temperature hot water with the temperature higher than that of indoor air, sending the high-temperature hot water to the upper part of the wet film through a pipeline, enabling the water to permeate downwards along the wet film under the action of gravity, and enabling the water to be absorbed by the wet film to form a uniform water film. When dry air passes through the wet film, water molecules fully absorb the heat of the water molecules to vaporize and evaporate, so that the humidity of the air is increased, and the wet air is formed. The method changes the process of traditional wet film isenthalpic humidification, adopts temperature rise humidification, can obtain humid air, can ensure that the temperature of the air cannot be reduced, and solves the problem that the traditional wet film isenthalpic humidification cannot be applied in winter because the temperature of the air is reduced to cause 'cold air'. With reference to fig. 1-4, the device adopts a solar wet film constant temperature humidifying method to humidify the indoor.
The invention discloses a solar wet film constant-temperature humidifying device which comprises an outdoor heat absorption water tank, an indoor box body 1 and a circulating water pump. The heat absorption water tank obtains a heat source through solar radiation or the box body 1 through a heat exchange coil, and the circulating water pump provides power to convey hot water into the box body 1 to prepare humid air so as to humidify the room. Wherein:
the heat absorption water tank consists of a U-shaped heat insulation box 24 made of polyurethane material and a glass column 21; the glass column 21 is formed by sealing two ends of an outer glass shell 22 and an inner glass shell 23, a space between the outer glass shell 22 and the inner glass shell 23 is vacuumized, and the surface of the inner glass shell 23 is coated with a heat absorption film to absorb solar radiation heat and heat water in the glass column; the upper opening part of the glass column 21 is fitted into the opening end of the U-shaped heat-insulating box 24 to insulate the obtained hot water. The gas generated by heating the glass column 21 is discharged from the exhaust pipe 26; the temperature sensor 25 measures the temperature of the water in the heat absorption water tank and delivers the water to the room through the first water supply pipe 31 when the temperature of the water meets the requirement. When the water level in the glass column 21 is lower than the set water level, the ball float valve 27 controls the first electric water inlet valve 30 to open, so that tap water is softened by the softening device 29 through the tap water pipeline 28 and then is sent into the glass column 21, and water can be supplemented in time.
The indoor box body 1 comprises a partition plate 4, an upper-layer box body 2 and a lower-layer box body 3, wherein the upper-layer box body 2 is arranged above the partition plate 4, and the lower-layer box body 3 is arranged below the partition plate 4. The top of the upper layer box body 2 is welded with a fixing device 37, a third water supply pipe 36 is fixed at the lower part of the fixing device 37, a water spraying nozzle 38 is arranged on the third water supply pipe, and water is sprayed to the wet curtain 6 below to form a high-temperature hot water film.
The fan 8 fixed on the side of the upper box body 2 is used as power, indoor air is filtered by the air filter 47 at the inlet of the air pipe 46 and is sent to the wet curtain 6 to be contacted with high-temperature hot water for heating and humidifying, humid air is obtained, and the humid air is sent to the indoor through the air outlet 51 opposite to the fan 8. Wherein, the silencer 48 is arranged in the air pipe 46 to reduce the noise of the circulating air, and the humidity sensor 49 is used for detecting the humidity of the air in the air pipe so as to adjust the rotating speed of the fan 8 in time. The adjustable shutter 49 is adopted in the air outlet 51 to adjust the direction of the air outlet 48, so that discomfort caused by direct blowing is avoided.
Further, the bottom of the upper-layer box body 2 is provided with a heat exchange coil pipe 10, the water inlets 11 at two ends of the heat exchange coil pipe 10 and the interfaces 13 on the water outlets 12 are connected with a solar water heater pipeline or a hot water pipe network at home, liquid around the heat exchange coil pipe 10 is heated through heat exchange, high-temperature hot water is prepared, a ball float valve 9 is arranged on the liquid 5, the liquid level is detected, and water is replenished by a control system. The bottom of the liquid level is provided with a drain pipe 14, and the drain pipe 14 is provided with a drain valve 15, so that the liquid 5 can be conveniently replaced by the equipment.
The gravity heat pipe 19 is arranged in the lower box body 3 and is fixed on the small hole of the partition plate 4 through the rubber clamping sleeve 20, one part of the heat pipe 19 is positioned at the bottom of liquid in the upper box body 2, one part of the heat pipe is positioned in the sewage tank 16 of the lower box body 3, the two ends of the sewage tank 16 are provided with the sewage water inlet 17 and the sewage water outlet 18, domestic waste hot water enters from the sewage water inlet 17, heat is exchanged through the gravity heat pipe 19 in the sewage tank 16 to heat the liquid in the upper box body 2, and then the domestic waste hot water is connected into a sewer through a pipeline from the sewage water outlet 18.
When the water temperature of the outdoor heat absorption water tank cannot meet the requirement, the first circulating water pump 43 is started to be responsible for replenishing liquid to the upper tank body 2, and the heat absorption water tank is used for storing water. When liquid 5 in the upper water tank 2 is lower than the set water level, the ball float valve 9 controls the first circulating water pump 43 to start, the hot water electric reversing valve 24 of the first water supply pipe 31 is in a closed state, the first water supply pipe 31 extends to the bottom of the glass column 21 to pump water, water is sent to the bottom of the upper tank body 2 through the electric one-way valve 44, the water supply quantity of the evaporated liquid 5 is supplied, the ball float valve 9 controls the first circulating water pump 43 to close after the water level requirement is met, and the water supply process is completed.
Further, the second circulation water pump 34 circulates indoor hot water at this time. One end of the second circulating water pump 34 is connected to the water outlet 12 side of the heat exchange coil 10 through the second water supply pipe 33, the hot water electric reversing valve 32 and the fourth water supply pipe 39, so as to pump high-temperature hot water and avoid poor circulation with make-up water. The other end of the second circulating water pump 34 passes through a third water supply pipe 36, and then sprays hot water onto the wet curtain 6 through a sprinkler 38 to humidify the indoor air.
When the water temperature of the outdoor heat absorption water tank meets the requirement, the temperature sensor 25 controls the hot water electric reversing valve 32 to be communicated with the first water supply pipe 31 and close to be communicated with the fourth water supply pipe 39, and the third electric water inlet valve 42 is closed. One end of the second circulating water pump 34 is connected to the bottom of the glass column 21 through a first water supply pipe 31, pumps high-temperature hot water, passes through the hot water electric reversing valve 32 and a second water supply pipe 33, is sent to a third water supply pipe 36, and sprays the hot water onto the wet curtain 6 through the water spray nozzle 29 to humidify indoor air.
The invention is mainly used for improving the indoor drying environment of the plateau low-pressure and low-wetland compartments, so as to solve the indoor drying problem, improve the working and sleeping environment and improve the working and living quality.
The invention aims to solve the problem of cold wind caused by the isenthalpic humidification and reduction in winter of the traditional wet film, plateau solar radiation or a heat exchange coil is adopted to preheat water sprayed on the wet film before extraction, high-temperature hot water with the temperature slightly higher than that of air is obtained, and when indoor air is exchanged with the wet film hot water, the temperature rise and humidification process occurs because the temperature of the hot water is higher than that of the air, so that the temperature of the air is not reduced while the air is humidified.
The calculation case is as follows:
when the water temperature is higher than the air dry bulb temperature, a heating and humidifying process occurs. At this time, the water temperature is higher than the air temperature, the water vapor partial pressure of the air is not saturated, and the air is heated and humidified. The heat required by water evaporation and the heat for heating air are both from water, and the calculation is carried out by a simple and easily-understood method.
According to the design specification DBJ540002-2016 of heating and ventilation of civil autonomous buildings in Tibet, the temperature of a main heating room is 18-24 ℃, the wind speed is not more than 0.2m/s, and the GB/T18883-2002 specifies that the relative humidity is 30-60%. Assuming that the space of a certain residence in winter of Tibet Lhasa is 4m 5m 3m, the indoor heating temperature is 20 ℃, the relative humidity is 10%, the humidified humid air temperature is 22 ℃, and the indoor is finally treated toThe relative humidity of air is 60%, the fresh air quantity is 80m3/h, the indoor design temperature is 20 ℃ after the fresh air temperature is processed by indoor heating equipment, and the density of water is approximately 1 multiplied by 103Kg/m3The Lhasa pressure is 0.065290 MPa.
1) Wet film humidifying circulation air quantity
The indoor heating temperature was 20 ℃ and the relative humidity was 10%, assuming that the density of the air did not become 0.8kg/m3。
Setting value: the air outlet temperature is 22 ℃, the relative humidity is 100%, the air temperature is still 20 ℃ after being mixed with the indoor air, and the relative humidity is 50%.
Looking up the psychrometric chart can obtain:
the temperature of fresh air which is not humidified is 20 ℃, the relative humidity is 10 percent, and the moisture content is d1＝2.2g/kg，ρ1＝0.774kg/m3；
The air outlet temperature of the humidifying equipment is 22 ℃, the relative humidity is 100 percent, and the moisture content d of the humidified air2＝26.3g/kg，ρ2＝0.758kg/m3；
The temperature of the mixed fresh air is 20 ℃, the relative humidity is 60%, and the moisture content d is obtained after the indoor air is mixed3＝13.7g/kg，ρ3＝0.769kg/m3。
In the formula: g-mass flow of water vapor in air (kg/h)
Q-treated air volume (m3/h)
d-moisture content of the air treated (g/kg)
Conservation of water vapor mass in air:
Ginto-GGo out＝GMixing of
In the formula: gIntoMass flow of water vapor in the air entering the wet curtain (kg/h)
GIs prepared fromMass flow of water vapor in the air after treatment with a wet curtain (kg/h)
GGo outMass flow of water vapor in air after indoor mixing (kg/h)
Q3ρ3d3-Q1ρ1d1＝Q2ρ2d2
Solving the equation of 80X 0.769X 13.7-80X 0.774X 2.5Q X0.758X 26.3 to obtain the inlet air quantity Q of the fan being 34.5m3/h
2) The area of the air outlet is as follows:
in the formula: q-treated air amount (m 3/h);
v-tuyere wind speed (m/h);
the following can be obtained:
therefore, the minimum area of the air outlet is 0.42m2Therefore, the area of the air outlet is 0.3m x 0.4m
Then the wind speed at this time is:
namely:
the wind speed requirements of the design specification DBJ540002-2016 of heating and ventilation of Tibetan civil autonomous buildings are met, and the indoor crowd has small blowing sense.
3) Amount of evaporated water
In the formula: w-humidification amount (kg/h);
q-treated air amount (m)3/h)；
Rho-air Density (kg/m)3)；
d2-the air moisture content after treatment (g/kg);
d1-air moisture content before treatment (g/kg);
k-safety factor, 1.1 is selected;
volume of water required per hour:
4) water spray temperature of water spray nozzle
Calculating the water temperature requirement of the sprinkler according to energy conservation:
the temperature change of the total water spraying quantity of the sprinkler head is equal to the heat absorption quantity of air and the heat absorption quantity of water evaporation
Suppose that: the water amount of sprayed water is 50kg/h, the specific heat capacity is found to be 4.18 kJ/(kg. DEG C) by searching relevant parameters, the temperature after water spraying and heating is considered to be consistent with the temperature of the treated air to be 22 ℃, the latent heat of vaporization of the water is 2393.1kJ/kg, and the specific heat of the water is 1 KJ/(kg. k).
50×4.18×(t-22)
＝0.783×2293.1+0.8×34.5×(22-20)×1
Solving the equation yields t-31 ℃.
Claims (10)
1. A plateau solar wet film constant temperature humidifying device is characterized by comprising an outdoor heat absorption water tank, an indoor box body (1) and a circulating water pump, wherein the outdoor heat absorption water tank is arranged in the box body; the heat absorption water tank obtains a heat source through solar radiation or the box body (1) through a heat exchange coil, and the circulating water pump provides power to convey hot water into the box body (1) to prepare humid air so as to humidify the room.
2. The plateau solar energy wet film constant temperature humidifying device according to claim 1, wherein the heat absorption water tank comprises a U-shaped heat preservation box (24) and a glass column (21), the glass column (21) is composed of an outer glass shell (22) and an inner glass shell (23) which are sealed at two ends, a vacuum is pumped between the outer glass shell (22) and the inner glass shell (23), the surface of the inner glass shell (23) is coated with a heat absorption film, and the heat absorption film is a metal oxide with the thickness of 3mm and is used for absorbing solar radiation heat and heating water in the glass column (21).
3. The plateau solar wet film constant-temperature humidifying device as claimed in claim 2, wherein the upper opening part of the glass column (21) is embedded into a U-shaped heat preservation box (24), the U-shaped heat preservation box is made of rubber made of polyurethane materials, the total length is 30cm, the thickness is 2mm, the U-shaped heat preservation box is sleeved outside the glass column (21), and the lower end of the U-shaped heat preservation box (24) is 10cm away from the upper end of the glass column (21); the distance between the top of the U-shaped heat preservation box (24) and the opening at the upper end of the glass column (21) is 20cm, so that the obtained hot water is preserved; in order to keep the obtained hot water warm, gas generated by heating in the glass column (21) is exhausted from an exhaust pipe (26), and the exhaust pipe (26) is arranged at the top of the U-shaped heat preservation box (24); the temperature sensor (25) is arranged in the heat absorption water tank and used for measuring the water temperature in the heat absorption water tank, the heat absorption water tank is conveyed indoors through a first water supply pipe (31), a ball float valve (27) is arranged in the heat absorption water tank, the ball float valve (27) is electrically connected with a first electric water inlet valve (30), the first electric water inlet valve (30) is arranged on a tap water pipeline (28), a softening device (29) is installed on the tap water pipeline (28), the softening device (29) is made of sodium ion exchange resin, and calcium and magnesium ions in water are replaced by sodium ions.
4. The plateau solar wet film constant-temperature humidifying device as claimed in claim 1, wherein the indoor box body (1) comprises an upper box body (2) and a lower box body (3), the upper box body (2) and the lower box body (3) are divided by a partition plate (4), a fixing device (37) is welded on the top of the upper box body (2), a third water supply pipe (36) is fixed on the lower portion of the fixing device (37), a water spraying nozzle (38) is installed on the third water supply pipe, water is sprayed onto a wet curtain (6) below the fixing device to form a high-temperature hot water film, the wet curtain (6) is made of a composite wet film material, is rectangular in shape, and is fixed through a circular wet film fixing device (7) made of stainless steel.
5. The plateau solar wet film constant-temperature humidifying device as claimed in claim 4, wherein the fan (8) fixed on the side of the upper box body (2) is used for filtering indoor air through the air filter (47) at the inlet of the air pipe (46), and after the indoor air is sent to the wet curtain (6) to be contacted with high-temperature hot water sprayed by the water spraying nozzle (38), the temperature is raised and the humidity is increased to obtain humid air, and the humid air is sent to the indoor through the air outlet (51) opposite to the fan (8).
6. The plateau solar wet film constant-temperature humidifying device as claimed in claim 5, wherein a silencer (48) is mounted in the air pipe (46) to reduce noise of circulating air, and a humidity sensor (49) is used for detecting humidity of air in the air pipe (46) and adjusting the rotating speed of the fan (8);
the air outlet (51) is internally provided with an adjustable shutter (49) for adjusting the direction of the air outlet (48).
7. The plateau solar wet film constant-temperature humidifying device as claimed in claim 4, wherein a heat exchange coil (10) is arranged at the bottom of the upper-layer box body (2); the heat exchange coil (10) is a serpentine pipeline and is horizontally arranged, and the material is a PERT thin hose with high heat exchange performance; the water inlet (11) and the interface (13) on the water outlet (12) at the two ends of the heat exchange coil (10) are connected with a solar water heater pipeline or a hot water pipe network at home, the surrounding liquid is heated through heat exchange of the heat exchange coil (10) to prepare high-temperature hot water, a ball float valve (9) is arranged on the liquid (5) at the bottom of the upper-layer box body (2), the liquid level is detected, water is supplemented by a control system, a drain pipe (14) is arranged at the bottom of the liquid level, a drain valve (15) is arranged on the drain pipe (14), and the liquid (5) can be conveniently replaced by equipment; wherein the liquid (5) is softened tap water.
8. The plateau solar wet film constant-temperature humidifying device as claimed in claim 4, wherein the partition plate (4) is provided with small holes, the aperture of each small hole is slightly more than that of the gravity heat pipe (19) by about 5mm, and the inner edges of the small holes are fixed with rubber snap rings (20) to facilitate the fixation of the gravity heat pipes;
a gravity heat pipe (19) is arranged in the lower-layer box body (3), the gravity heat pipe (19) is in an upper arc-shaped cylinder and a lower arc-shaped cylinder and is vertically arranged, and a rubber snap ring (20) is fixed at a position 1/3 away from the top of the gravity heat pipe (19); the gravity heat pipe (19) is fixed on a small hole of the partition plate (4) through a rubber clamping sleeve (20), one part of the heat pipe (19) is positioned at the bottom of liquid in the upper-layer box body (2), the other part of the heat pipe is positioned in a sewage tank (16) of the lower-layer box body (3), a sewage water inlet (17) and a sewage water outlet (18) are arranged at two ends of the sewage tank (16), domestic waste hot water enters from the sewage water inlet (17), the liquid in the upper-layer box body (2) is heated through heat exchange of the gravity heat pipe (19) in the sewage tank (16), and then the sewage water outlet (18) is connected into a sewer through a pipeline, wherein the sewage tank (16) is a rectangular channel made of stainless steel materials, is 15mm away from the bottom of the gravity heat pipe (19), and is provided with heat insulation materials on the left side and the right side.
9. The plateau solar wet film constant temperature humidifying device as claimed in claim 3, wherein the first circulating water pump (43) is arranged in the horizontal pipeline of the first water supply pipe (31), is communicated with the liquid (5) through a one-way electric valve (44), and is far from the bottom 2/5 of the liquid (5);
the second circulating water pump (34) is arranged in a horizontal pipeline of the second water supply pipe (33) and is connected with a third water supply pipe (36) at the top of the upper-layer box body (2) after passing through a second electromagnetic water inlet valve (35);
the water inlet end of the second circulating water pump (34) is connected with the side of the water outlet (12) of the heat exchange coil (10) through a second water supply pipe (33), a hot water electric reversing valve (32) and a fourth water supply pipe (39), the water outlet end of the second circulating water pump (34) passes through a second electromagnetic water inlet valve (35) and then reaches a third water supply pipe (36) which is horizontally installed, and hot water is sprayed onto the wet curtain (6) through a water spraying nozzle (38) to humidify indoor air.
10. The use method of the plateau solar wet film constant-temperature humidifying device based on any one of claims 1-9 is characterized by comprising the following steps;
when the water temperature of the outdoor heat absorption water tank cannot meet the requirement, the first circulating water pump (43) is started to be responsible for replenishing liquid to the upper tank body (2), the heat absorption water tank at the moment is used for storing water, when the liquid (5) in the upper tank body (2) is lower than a set water level, the ball float valve (9) controls the first circulating water pump (43) to be started, the hot water electric reversing valve (32) of the first water supply pipe (31) is in a closed state, the first water supply pipe (31) extends to the bottom of the glass column (21) to pump water, the electric one-way valve (44) supplies water to the bottom of the upper tank body (2), the water amount is replenished to the evaporated liquid (5), and the ball float valve (9) controls the first circulating water pump (43) to be closed after the water level requirement is met, so that the water replenishing process is completed;
the second circulating water pump (34) performs indoor hot water circulation at the moment, one end of the second circulating water pump (34) is connected with the water outlet (12) side of the heat exchange coil (10) through a second water supply pipe (33), a hot water electric reversing valve (32) and a fourth water supply pipe (39) to extract high-temperature hot water so as to avoid poor circulation with make-up water, and the other end of the second circulating water pump (34) sprays the hot water onto the wet curtain (6) through the water spray nozzle (38) after passing through a third water supply pipe (36) to humidify indoor air;
when the water temperature of the outdoor heat absorption water tank meets the requirement, the temperature sensor (25) controls the hot water electric reversing valve (32) to be communicated with the first water supply pipe (31) and close the communication with the fourth water supply pipe (39), the third electric water inlet valve (42) is closed, one end of the second circulating water pump (34) is connected to the bottom of the glass column (21) through the first water supply pipe (31), high-temperature hot water is pumped and passes through the hot water electric reversing valve (32) and the second water supply pipe (33) and is sent to the third water supply pipe (36), and the hot water is sprayed onto the wet curtain (6) through the water spraying nozzle (29) to humidify indoor air.
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