CN106673097A - Seawater desalting plant for solar coupled heat pump - Google Patents
Seawater desalting plant for solar coupled heat pump Download PDFInfo
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- CN106673097A CN106673097A CN201710080324.4A CN201710080324A CN106673097A CN 106673097 A CN106673097 A CN 106673097A CN 201710080324 A CN201710080324 A CN 201710080324A CN 106673097 A CN106673097 A CN 106673097A
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- water
- sea water
- seawater
- heat exchanger
- pump
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
Abstract
The invention discloses a seawater desalting plant for a solar coupled heat pump. The seawater desalting plant comprises a compressor, a throttling valve, a condenser, a solar heat collector, a heat collection circulating pump, a seawater-water heat exchanger, a heat collection valve, a seawater tank, a first seawater circulating pump, a first three-way adjusting valve, a concentrated seawater discharging valve, a concentrated seawater discharging pump, a seawater sprayer, a falling-film evaporator, a concentrated seawater collector, a second three-way adjusting valve, a fresh water discharging valve, a fresh water collector, a fin heat exchanger, a centrifugal fan, a second seawater circulating pump and a fin type evaporator. According to the seawater desalting plant for the solar coupled heat pump, disclosed by the invention, humidification and enthalpy increase for air are increased by using the falling-film evaporator; desalting treatment for wet air is realized by using cold seawater and a heat pump evaporator, and latent heat of condensation is recovered; meanwhile, the utilization rate of energy is improved, the operability of the device is widened, the consumption of the energy is reduced, and the water yield under unit electricity consumption is increased.
Description
Technical field
The present invention relates to field of seawater desalination, more particularly to a kind of solar energy coupling heat pump sea water desalinating unit.
Background technology
Fresh water is strategic materials for the survival of mankind.With the development of society, people increasingly increase the demand of fresh water,
Due to environmental pollution and exhaustive exploitation, the obtainable freshwater resources in the whole world are increasingly urgent, and desalination technology has become to alleviating
A kind of effective method of pressure of supply water.
At present the desalination technology of world is hyperfiltration and multiple-effect distillation, but the desalination technology of routine
It is both needed to consume substantial amounts of electric power and fossil energy on the premise of aquifer yield is ensured.With the development of China's marine industries, ship,
The occasion that isolated island etc. is not yet developed completely is equally also faced with the demand to fresh water.But it is extra large from current medium-sized or bench scale
From the point of view of the state of development of water desalination technology, it is known that individually solar energy sea water desalination apparatus are to solar energy heating area, weather etc.
Rely on larger, and aquifer yield is unstable, night cannot work；Individually heat pump sea water desalting apparatus then more receives source pump performance
Impact, energy utilization rate is low, energy consumption is big.Therefore with solar energy as auxiliary thermal source substituting part conventional energy resource, with reference to heat pump
Heat recovery is realized, for desalinization, the high desalting process of simple structure, energy utilization rate is capable of achieving.
Chinese patent CN 105645492A disclose a kind of small-sized heat-pump-type seawater desalination system with vaporising device,
Including sea water room, freshwater room, evaporation of seawater room, seawater evaporator, the device mainly utilizes sea water in heat exchanger tube surface evaporation,
The vapor formed after evaporation forced condensation on an evaporator in the presence of blower fan, so as to produce fresh water.Although the device
Vaporising device can to a certain extent improve the evaporation efficiency of sea water, but the high temperature concentrated seawater after evaporating directly drain and not to it
Heat recovery, causes heat waster.Cryogenic air condense simultaneously after the completion of, can enter if its temperature or water capacity are higher than environment
Row is recycled, if should then switch to open system direct air-breathing from air less than environment, operational mode it is more inflexible and
Aquifer yield is limited completely by heat pump performance.Chinese patent CN 1724395A disclose a kind of combined solar energy heat pump for desaltination of sea water
Device, including solar thermal collection system, heat pump circulating system and flash system, heat pump provides 60~65 Jing after solar energy preheating
DEG C high temperature seawater, using 4~8 effect distillators.Although higher ocean temperature evaporation efficiency under vacuum conditions can be
Improve, but the device is higher to heating of seawater temperature requirement, and while flash system needs certain vacuum, system structure is multiple
Miscellaneous, part is more, higher to environmental condition, manufacturing technique requirent, is not suitable for Miniature seawater desalination device.
Therefore, those skilled in the art is devoted to developing a kind of solar energy coupling heat pump sea water desalinating unit, using drop
Film evaporator realizes desalt processing using Mare Frigoris water and evaporator with heat pump to air humidification increasing enthalpy to humid air, has reclaimed condensation
Latent heat, while improve energy utilization rate, has expanded the operability of device, reduces the consumption of the energy, increased unit consumption
Aquifer yield under electricity.
The content of the invention
In view of the drawbacks described above of prior art, the technical problem to be solved is a kind of solar energy coupling of exploitation
Heat pump sea water desalting apparatus, using falling film evaporator to air humidification increasing enthalpy, using Mare Frigoris water and evaporator with heat pump to humid air
Desalt processing is realized, condensation latent heat has been reclaimed, while improve energy utilization rate, the operability of device has been expanded, is reduced
The consumption of the energy, increased the aquifer yield under unit power consumption amount.
For achieving the above object, the invention provides a kind of solar energy coupling heat pump sea water desalinating unit, including compressor,
It is choke valve, condenser, solar thermal collector, collection hot recycle pump, sea water-water- to-water heat exchanger, thermal-arrest valve, sea water water tank, first extra large
Water-circulating pump, the first three-way control valve, concentrated seawater drain valve, concentrated seawater emptying pump, seawater spraying device, falling film evaporator, dense sea
Hydromining storage, the second three-way control valve, fresh water drain valve, fresh water collecting device, finned heat exchanger, centrifugal blower, the second sea water are followed
Ring pump, finned evaporator；Wherein,
The import of the cycle fluid of compressor is connected by condenser with choke valve, the other end of choke valve with it is finned
One end of vaporizer is connected, and the other end of finned evaporator is connected with the outlet of the cycle fluid of institute compressor；
The import of condenser is connected with one end of sea water water tank, and the other end of sea water water tank and the first sea water circulating pump connect
Connect, the outlet of condenser is connected with sea water-water- to-water heat exchanger, sea water-water- to-water heat exchanger is by solar thermal collector and collection thermal cycle
Pump connects, then the one end for being connected to sea water-water- to-water heat exchanger by thermal-arrest valve forms a circulation；
Sea water-water- to-water heat exchanger connection seawater spraying device, falling film evaporator is arranged at seawater spraying device lower section, concentrated seawater
Harvester is arranged at falling film evaporator lower section, and concentrated seawater harvester first port passes through the first three-way control valve and first
Sea water circulating pump connects, and the second port of concentrated seawater harvester connects concentrated seawater drain valve by concentrated seawater emptying pump；
2nd port of the first three-way control valve is connected with the 3rd port of the second three-way control valve, the second three-way control valve
2nd port is connected with the outlet of the cycle fluid of finned heat exchanger, with finned heat exchanger and the second sea water circulating pump
Outlet is connected；Fresh water collecting device is arranged at the lower section of finned heat exchanger, and is connected with fresh water drain valve；
Falling film evaporator, finned heat exchanger, finned evaporator are connected with centrifugal blower, constitute a rectangle circulated air
Road.
Further, the one kind during solar thermal collector is arranged to vacuum tube collector or flat plate collector.
Further, sea water-water- to-water heat exchanger is arranged to fixed tube-sheet exchanger, plate type heat exchanger, casing type heat exchanging
One kind in device.
Further, falling film evaporator is arranged to adopt paper honeycomb filling-material structure, evaporation efficiency for 90% -99%
Distributary vaporizer.
Further, falling film evaporator is arranged to replace with damping device.
Further, include heat pump operation mode and without heat pump operation mode, and have heat pump operation mode and without heat
Pump operation pattern can mutually switch.
Further, it is arranged to not retain interval, fin type heat exchange between finned evaporator and finned heat exchanger
It is arranged to retain interval between device and falling film evaporator, spacing distance is arranged to 30mm.
Further, the fin of finned evaporator is arranged to be made up of the material of seawater corrosion resistance, fin type heat exchange
The fin of device is arranged to be made up of the material of seawater corrosion resistance.
Further, the first three-way control valve is arranged to the mixing ratio of the sea water after freely adjustable preheating and concentrated seawater
Example.
Further, the second three-way control valve is arranged to freely adjustable pre- hot sea water into the first three-way control valve
Ratio.
In another better embodiment of the present invention, a kind of solar energy coupling heat pump sea water desalinating unit only has heat pump fortune
Row mode.
Technique effect
A kind of solar energy coupling heat pump sea water desalinating unit of the present invention, using falling film evaporator to air humidification increasing enthalpy,
Desalt processing is realized to humid air using Mare Frigoris water and evaporator with heat pump, condensation latent heat has been reclaimed, while improve utilization of energy
Rate, has expanded the operability of device, reduces the consumption of the energy, increased the aquifer yield under unit power consumption amount.
The present invention utilizes solar-assisted heat pump technology, with the height after heat pump condenser and solar thermal collector heat temperature raising
Temperature seawater spraying, as the thermal source of evaporation process, using Mare Frigoris water and evaporator with heat pump desalinization is completed to falling film evaporator
Simultaneously condensation latent heat is reclaimed, the high temperature concentrated seawater and a certain proportion of preheating sea water mixing after evaporation has reclaimed part sensible heat,
The thermal efficiency is improve, the energy consumption of system is reduced.Above procedure is the heat and mass under normal pressure, simplifies equipment production work
Skill, reduces plant running condition, and preferably realizing solar energy and heat pump techniques, to complete sea water by the dehumidification process that is humidified light
The combination of change.
Using apparatus above, heat pump and the switching without heat pump operational mode are also capable of achieving.When weather is preferably entered
When the ocean temperature of heat pump condenser is higher than 40 DEG C, you can select without heat pump operation mode：The intensification of sea water fully relies on the sun
Can and heat recovery completing, source pump is in stopped status, and the generation of fresh water is completed as cooling water using Mare Frigoris water.
When weather is poor or night solar energy not in good working state when, you can selection have heat pump operation mode：The intensification of sea water is needed
Heat pump condenser and solar thermal collector and the recovery of heat is wanted to carry out shared.Two kinds of operational modes mutually switch in guarantor
On the premise of the stable aquifer yield of card, the consumption to electricity can be largely reduced.The solar energy coupling heat pump sea water of the present invention is light
Efficiency high is put in makeup, stable, is easy in isolated island, and the area of particularly shortage of electric power on daytime uses.
The technique effect of the design, concrete structure and generation of the present invention is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Description of the drawings
Fig. 1 is a kind of structural representation of solar energy coupling heat pump sea water desalinating unit of a preferred embodiment of the present invention
Figure.
Specific embodiment
As shown in figure 1, a preferred embodiment of the present invention provides a kind of solar energy coupling heat pump sea water desalinating unit, bag
Include compressor 1, choke valve 2, condenser 3, solar thermal collector 4, collection hot recycle pump 5, sea water-water- to-water heat exchanger 6, thermal-arrest valve
7th, sea water water tank 8, the first sea water circulating pump 9, the first three-way control valve 10, concentrated seawater drain valve 11, concentrated seawater emptying pump 12, sea
Water spray device 13, falling film evaporator 14, concentrated seawater harvester 15, the second three-way control valve 16, fresh water drain valve 17, fresh water collecting
Device 18, finned heat exchanger 19, centrifugal blower 20, the second sea water circulating pump 21, finned evaporator 22；Wherein,
The import of the cycle fluid of compressor 1 is connected by condenser 3 with choke valve 2, the other end and wing of choke valve 2
One end of plate evaporator 22 is connected, the outlet phase of the other end of finned evaporator 22 and the cycle fluid of institute compressor 1
Connection；
The import of condenser 3 is connected with one end of sea water water tank 8, the other end of sea water water tank 8 and the first sea water circulating pump 9
Connection, the outlet of condenser 3 is connected with sea water-water- to-water heat exchanger 6, and sea water-water- to-water heat exchanger 6 is by solar thermal collector 4 and collection
Hot recycle pump 5 connects, then the one end for being connected to sea water-water- to-water heat exchanger 6 by thermal-arrest valve 7 forms a circulation；
The connection seawater spraying of sea water-water- to-water heat exchanger 6 device 13, falling film evaporator 14 is arranged at the lower section of seawater spraying device 13,
Concentrated seawater harvester 15 is arranged at the lower section of falling film evaporator 14, and the first port of concentrated seawater harvester 15 passes through the first threeway
Regulating valve 10 is connected with the first sea water circulating pump 9, and the second port of concentrated seawater harvester 15 is connected by concentrated seawater emptying pump 12
Concentrated seawater drain valve 11；
First three-way control valve 10 includes the 1st port, the 2nd port and the 3rd port；Second three-way control valve 16 includes the 1st
Port, the 2nd port and the 3rd port；
2nd port of the first three-way control valve 10 is connected with the 3rd port of the second three-way control valve 16, and the second threeway is adjusted
2nd port of valve 16 is connected with the outlet of the cycle fluid of finned heat exchanger 19, extra large with second with finned heat exchanger 19
The outlet of water-circulating pump 21 is connected；Fresh water collecting device 18 is arranged at the lower section of finned heat exchanger 19, and discharges with fresh water
Valve 17 is connected；
Falling film evaporator 14, finned heat exchanger 19, finned evaporator 22 are connected with centrifugal blower 20, constitute a square
Shape circulation air path.
In one preferred embodiment of the present invention, falling film evaporator 14 is arranged to have that evaporation specific surface area is big, evaporation effect
The high distributary vaporizer of rate, using paper honeycomb filling-material structure, can realize to air humidification increasing enthalpy.Sea water condensed device successively
3rd, Jing seawater sprayings device 13 is uniformly sprayed above the honeycomb filler of falling film evaporator 14 after the heat temperature raising of solar thermal collector 4,
Under gravity sea water forms high temperature liquid film along filler wall, and low temperature dry air or low temperature saturated moist air are abundant with high temperature liquid film
Contact forms high temperature saturated moist air.
In one preferred embodiment of the present invention, finned heat exchanger 19 is, using Mare Frigoris water as cooling water, to realize to high temperature
Saturated moist air is condensed, and completes the preheating to Mare Frigoris water again while fresh water is produced, and fin is using with corrosion-resistant material
Make.
In one preferred embodiment of the present invention, finned evaporator 22 is, using cold-producing medium as cooling working medium, to realize to Jing
The second stage condensation of humid air after the condensation of finned heat exchanger 19 produces fresh water, and fin is using with corrosion-resistant material system
Into.Condenser 3 adopts bushing type low finned tube heat exchanger.Solar thermal collector 4 is vacuum tube collector or flat-plate collector.
The solar energy coupling heat pump sea water desalinating unit of the present embodiment has been capable of achieving heat pump and without heat pump operational mode
Switching, its operation principle is as follows：
1st, when the ocean temperature into condenser 3 is less than 40 DEG C, the desalinization in a preferred embodiment of the present invention
Device is entered heat pump mode：
During startup, the first three-way control valve 10 is completely in 2-3 port positions, and the second three-way control valve 16 is completely in
2-3 port positions, Mare Frigoris water delivers to finned heat exchanger 19 and completes cold seawater preheating by the second sea water circulating pump 21, successively Jing
First three-way control valve 10, the second three-way control valve 16, by the first sea water circulating pump 9 sea water water tank 8 is delivered to.When sea water water tank 8
When middle water level rises to specified location, the second three-way control valve 16 is adjusted, make the flow that sea water flows through 1-3 port positions meet heat
Needed for pump circulation, remaining is discharged from 1-2 port positions.Sea water Jing sea water water tank 8 flow to the first rank that condenser 3 completes sea water
Duan Shengwen, flows through afterwards sea water-water- to-water heat exchanger 6 and completes second stage and heat up to form high temperature seawater, wherein, solar thermal collector 4
Absorb solar energy, cycle fluid Jing collection hot recycle pump 5, by sea water-water- to-water heat exchanger 6 by the heat exchange for collecting to sea
Water.High temperature seawater Jing seawater sprayings device 13 is uniformly sprayed to falling film evaporator 14 and forms high temperature liquid film, unevaporated high temperature seawater
Lodge in concentrated seawater harvester 15.When concentrated seawater liquid level rises to specified location in concentrated seawater harvester 15, the first threeway is adjusted
Regulating valve 10, makes concentrated seawater flow through 1-3 port positions and pre- hot sea water flows through the total flow of 2-3 port positions and meets heat pump and follow
Needed for ring, now into steady operational status.Heat is constituted by condenser 3, compressor 1, finned evaporator 22 and choke valve 2
Pumping system, completes to heat up first stage of sea water using condenser 3, and using finned evaporator 22 to humid air the is completed
Two-stage condenses.Dry air or low temperature saturated moist air in circulation air path, is forced to flow through drop under the driving of centrifugal blower 20
Film evaporator 14 completes increasing enthalpy humidification.High temperature saturated moist air flows through finned heat exchanger 19, and the vapor in air is in fin
The surface of formula heat exchanger 19 be condensed into fresh water drop to fresh water collecting device 18 complete the first stage condensation.Air after process is continued flow through
Finned evaporator 22, remaining vapor is condensed into fresh water and drops to fresh water collecting device on the surface of finned evaporator 22 in air
18 complete second stage condensation.Low temperature saturated moist air after being disposed delivers to entering for centrifugal blower 20 again as return air
Mouth completes the circulation of air.
2nd, when the ocean temperature into condenser 3 is higher than 40 DEG C, sea water desalinating unit is entered without heat pump mode：
After solar energy coupling heat pump sea water desalinating unit stable operation, the ocean temperature into condenser 3 is higher than 40 DEG C
When, now source pump selects to enter shutdown mode, and main cause one is that the inflow temperature of condenser 3 is too high, affects source pump
Stable operation, two is that sea water at a temperature of this heats up without the heat pump first stage, can also ensure certain aquifer yield, while and
Save substantial portion of energy consumption.After source pump is shut down, sea water flows through sea water-water Jing after sea water water tank 8 passes through condenser 3
Heat exchanger 6 completes the intensification of sea water, wherein, solar thermal collector 4 absorbs solar energy, and cycle fluid Jing collection hot recycle pump 5 passes through
Sea water-water- to-water heat exchanger 6 is by the heat exchange for collecting to sea water.High temperature seawater Jing seawater sprayings device 13 is uniformly sprayed to drop
Film evaporator 14 forms high temperature liquid film, and unevaporated high temperature seawater lodges in concentrated seawater harvester 15.Mare Frigoris water is by the second sea water
Circulating pump 21 flows through finned heat exchanger 19 and completes cold seawater preheating while completing the condensation to humid air.It is dry in circulation air path
Air or low temperature saturated moist air, are forced to flow through falling film evaporator 14 under the driving of centrifugal blower 20 and complete increasing enthalpy humidification.It is high
Have enough to eat and wear and flow through finned heat exchanger 19 with humid air, the vapor in air is condensed into fresh water drop on the surface of finned heat exchanger 19
Condensation is completed to fresh water collecting device 18.Air after process continues flow through finned evaporator 22, as return air deliver to again from
The entrance of heart-wind syndrome machine 20 completes the circulation of air.
In another preferred embodiment of the present invention, using pre- hot sea water as supplementary water, and high temperature concentrated seawater is all drained.
In the another embodiment of the present invention, the falling film evaporator device for the purpose of humidification is arranged to use
Other kinds of damping device, it is not limited to falling film evaporator.
By above solar energy coupling heat pump sea water desalinating unit, realize solar thermal collector, source pump and increasing
The combination of wet dehumidifying technology.First stage wet air condensation is completed using Mare Frigoris water as cooling water dive while having reclaimed condensation
Heat, and part sensible heat has been reclaimed in condensed sea water and the mixing of unevaporated concentrated seawater, it is wet that evaporator with heat pump completes second stage
Air setting has reclaimed condensation latent heat simultaneously, there is provided the thermal efficiency, reduces the energy consumption of system.And in above process, only deposit
In heat and mass phenomenon, system normal pressure operation, device manufacturing process is simple.Meanwhile, with reference to the characteristics of this device, also it is capable of achieving not
It is maximized to make use of solar energy resources with two kinds of operational modes of weather conditions.
The present invention utilizes solar-assisted heat pump technology, with the height after heat pump condenser and solar thermal collector heat temperature raising
Temperature seawater spraying, as the thermal source of evaporation process, using Mare Frigoris water and evaporator with heat pump desalinization is completed to falling film evaporator
Simultaneously condensation latent heat is reclaimed, the high temperature concentrated seawater and a certain proportion of preheating sea water mixing after evaporation has reclaimed part sensible heat,
The thermal efficiency is improve, the energy consumption of system is reduced.Above procedure is the heat and mass under normal pressure, simplifies equipment production work
Skill, reduces plant running condition, and preferably realizing solar energy and heat pump techniques, to complete sea water by the dehumidification process that is humidified light
The combination of change.
Using apparatus above, heat pump and the switching without heat pump operational mode are also capable of achieving.When weather is preferably entered
When the ocean temperature of heat pump condenser is higher than 40 DEG C, you can select without heat pump operation mode：The intensification of sea water fully relies on the sun
Can and heat recovery completing, source pump is in stopped status, and the generation of fresh water is completed as cooling water using Mare Frigoris water.
When weather is poor or night solar energy not in good working state when, you can selection have heat pump operation mode：The intensification of sea water is needed
Heat pump condenser and solar thermal collector and the recovery of heat is wanted to carry out shared.Two kinds of operational modes mutually switch in guarantor
On the premise of the stable aquifer yield of card, the consumption to electricity can be largely reduced.The solar energy coupling heat pump sea water of the present invention is light
Efficiency high is put in makeup, stable, is easy in isolated island, and the area of particularly shortage of electric power on daytime uses.
The preferred embodiment of the present invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations with design of the invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of solar energy coupling heat pump sea water desalinating unit, it is characterised in that including compressor, choke valve, condenser, the sun
Can heat collector, collection hot recycle pump, sea water-water- to-water heat exchanger, thermal-arrest valve, sea water water tank, the first sea water circulating pump, the first threeway
Regulating valve, concentrated seawater drain valve, concentrated seawater emptying pump, seawater spraying device, falling film evaporator, concentrated seawater harvester, the second threeway
Regulating valve, fresh water drain valve, fresh water collecting device, finned heat exchanger, centrifugal blower, the second sea water circulating pump, finned evaporator；
Wherein,
The import of the cycle fluid of the compressor is connected by the condenser with the choke valve, the choke valve it is another
One end is connected with one end of the finned evaporator, the other end of the finned evaporator and the circulation industrial of institute's compressor
The outlet of matter is connected；
The import of the condenser is connected with one end of the sea water water tank, and the other end of the sea water water tank is extra large with described first
Water-circulating pump connects, and the outlet of the condenser is connected with the sea water-water- to-water heat exchanger, and the sea water-water- to-water heat exchanger passes through
The solar thermal collector and the collection hot recycle pump connect, then are connected to the sea water-water heat exchange by the thermal-arrest valve
One end of device forms a circulation；
The sea water-water- to-water heat exchanger connects the seawater spraying device, and the falling film evaporator is arranged at the seawater spraying device
Lower section, the concentrated seawater harvester is arranged at the falling film evaporator lower section, and the concentrated seawater harvester first port
It is connected with first sea water circulating pump by the first three-way control valve, the second port of the concentrated seawater harvester is by described
Concentrated seawater emptying pump connects the concentrated seawater drain valve；
2nd port of first three-way control valve is connected with the 3rd port of the second three-way control valve, and second threeway is adjusted
2nd port of valve is connected with the outlet of the cycle fluid of the finned heat exchanger, with the finned heat exchanger with it is described
The outlet of the second sea water circulating pump is connected；The fresh water collecting device is arranged at the lower section of the finned heat exchanger, and with
The fresh water drain valve is connected；
The falling film evaporator, the finned heat exchanger, the finned evaporator are connected with centrifugal blower, constitute a square
Shape circulation air path.
2. a kind of solar energy coupling heat pump sea water desalinating unit as claimed in claim 1, it is characterised in that the solar energy collection
Hot device be arranged to vacuum tube collector or flat plate collector in one kind.
3. a kind of solar energy coupling heat pump sea water desalinating unit as claimed in claim 1, it is characterised in that the sea water-water
Heat exchanger is arranged to the one kind in fixed tube-sheet exchanger, plate type heat exchanger, double pipe heat exchanger.
4. a kind of solar energy coupling heat pump sea water desalinating unit as claimed in claim 1, it is characterised in that the falling film evaporation
Device be arranged to adopt paper honeycomb filling-material structure, evaporation efficiency for 90% -99% distributary vaporizer.
5. a kind of solar energy coupling heat pump sea water desalinating unit as claimed in claim 4, it is characterised in that the falling film evaporation
Device is arranged to use damping device.
6. a kind of solar energy coupling heat pump sea water desalinating unit as claimed in claim 1, it is characterised in that include heat pump fortune
Row mode and without heat pump operation mode, and described have heat pump operation mode and described can mutually cut without heat pump operation mode
Change.
7. a kind of solar energy coupling heat pump sea water desalinating unit as claimed in claim 1, it is characterised in that the finned steaming
Send out and be arranged to not retain interval between device and the finned heat exchanger, the finned heat exchanger and the falling film evaporator
Between be arranged to retain interval, the spacing distance is arranged to 30mm.
8. a kind of solar energy coupling heat pump sea water desalinating unit as claimed in claim 7, it is characterised in that the finned steaming
The fin for sending out device is arranged to be made up of the material of seawater corrosion resistance, and the fin of the finned heat exchanger is arranged to by resistance to sea
The material of aqueous corrosion is made.
9. a kind of solar energy coupling heat pump sea water desalinating unit as claimed in claim 1, it is characterised in that first threeway
Regulating valve is arranged to the mixed proportion of the sea water after freely adjustable preheating and concentrated seawater.
10. a kind of solar energy coupling heat pump sea water desalinating unit as claimed in claim 9, it is characterised in that the described 2nd 3
Logical regulating valve is arranged to freely adjustable pre- hot sea water into the ratio of first three-way control valve.
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| CN108190987A (en) * | 2018-01-17 | 2018-06-22 | 上海交通大学 | A kind of two-stage humidifies heat pump sea water desalting apparatus |
| CN108203198A (en) * | 2018-01-17 | 2018-06-26 | 上海交通大学 | A kind of PV/T drives hotting mask combination seawater desalination system |
| CN109399748A (en) * | 2018-11-09 | 2019-03-01 | 河海大学 | A kind of solar seawater desalination system |
| CN110697821A (en) * | 2019-09-27 | 2020-01-17 | 中国科学院工程热物理研究所 | Seawater source trans-critical carbon dioxide heat pump circulation multi-effect seawater desalination system |
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| CN110697821A (en) * | 2019-09-27 | 2020-01-17 | 中国科学院工程热物理研究所 | Seawater source trans-critical carbon dioxide heat pump circulation multi-effect seawater desalination system |
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| CN115493311A (en) * | 2022-09-29 | 2022-12-20 | 北京理工大学 | Flash evaporation and falling film evaporation composite heat exchange system and operation method thereof |
| CN115493311B (en) * | 2022-09-29 | 2023-10-27 | 北京理工大学 | Flash evaporation and falling film evaporation composite heat exchange system |
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