CN103449543A - Method and equipment for improving latent heat utilization rate in seawater desalination - Google Patents

Method and equipment for improving latent heat utilization rate in seawater desalination Download PDF

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Publication number
CN103449543A
CN103449543A CN2012101812854A CN201210181285A CN103449543A CN 103449543 A CN103449543 A CN 103449543A CN 2012101812854 A CN2012101812854 A CN 2012101812854A CN 201210181285 A CN201210181285 A CN 201210181285A CN 103449543 A CN103449543 A CN 103449543A
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China
Prior art keywords
thermo
electric device
radiator element
hot
cold junction
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CN2012101812854A
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Inventor
吴汀
柏胜强
尹湘林
鲁红亮
陈立东
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Shanghai Institute of Ceramics of CAS
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Shanghai Institute of Ceramics of CAS
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Priority to CN2012101812854A priority Critical patent/CN103449543A/en
Priority to PCT/CN2012/081522 priority patent/WO2013181891A1/en
Publication of CN103449543A publication Critical patent/CN103449543A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B21/00Machines, plants or systems, using electric or magnetic effects
    • F25B21/02Machines, plants or systems, using electric or magnetic effects using Peltier effect; using Nernst-Ettinghausen effect
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/0011Heating features
    • B01D1/0017Use of electrical or wave energy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D5/00Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0033Other features
    • B01D5/0042Thermo-electric condensing; using Peltier-effect
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D5/00Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • B01D5/006Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048Purification of waste water by evaporation
    • HELECTRICITY
    • H10SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10NELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N10/00Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
    • H10N10/10Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects
    • H10N10/13Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects operating with only the Peltier or Seebeck effects characterised by the heat-exchanging means at the junction
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08Seawater, e.g. for desalination
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/10Energy recovery
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2321/00Details of machines, plants or systems, using electric or magnetic effects
    • F25B2321/02Details of machines, plants or systems, using electric or magnetic effects using Peltier effects; using Nernst-Ettinghausen effects
    • F25B2321/025Removal of heat
    • F25B2321/0252Removal of heat by liquids or two-phase fluids
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies

Abstract

The present invention relates to a method and equipment for improving latent heat utilization rate in seawater desalination and provides a method for improving latent heat utilization rate in seawater desalination. The method comprises the following steps: providing a thermoelectric device and electrifying the thermoelectric device. The invention further discloses equipment for improving latent heat utilization rate in seawater desalination.

Description

Improve the method and apparatus of latent heat utilization efficiency in sea water desaltination
Technical field
The invention belongs to the sea water desaltination field, relate to a kind of method and apparatus that improves latent heat utilization efficiency in sea water desaltination.
Background technology
The Freshwater resources deficiency, become the problem that people are day by day deeply concerned in the world.As the increment technique of increasing income of water resources, sea water desaltination has become the important channel that solves the global water resources crisis.By 2008, existing more than 120 countries and regions were at the application desalination technology in the world, and there is more than 1.3 ten thousand of desalimtor in the whole world, approximately 6,348 ten thousand tons of sea water desaltination day output, and wherein 80% for tap water, has solved people's water supply problem more than 100,000,000
Method for desalting seawater used has seawater freezing method, electroosmose process, distillation method, reverse osmosis method etc. now, wherein distillation method and reverse osmosis method dominate, be applicable to large-scale desalination technology, distillation method comprises multistage flash evaporation, multiple-effect evaporation, the distillation of calming the anger, dew point evaporation etc., and reverse osmosis method has the advantage of energy consumption aspect.Distillation method causes its fresh water production high expensive because energy consumption is high, some countries slowly heavily turn to reverse osmosis method to development.But distillation method has maximization and large, and bay water and the low advantage of pre-treatment expense of utilizing pollution to weigh, if can effectively reduce energy consumption, its technology maturation, safety in operation is high, elasticity is large characteristics are given full play to, still very competitive in following desalination technology development.
1 kg water is under a normal atmosphere, and being elevated to 100 ℃ of required energy from 0 ℃ is 420kJ, and 1 kilogram of 100 ℃ of water become the water vapour institute energy requirement of 100 ℃, is 2260kJ, and most of energy consumption of distillation method concentrates on the latent heat of vaporization of seawater.Therefore, for various distillation method, the latent heat that the recycling water vapor condensation discharges becomes and reduces the most important means of energy consumption.All distillation method all are provided with the recovery of latent heat device at present, although structure is different, but ultimate principle is all steam condensation in pipeline, the condensation latent heat discharged is from inside to outside transmitted by pipeline, directly heat is passed to seawater preheating case or vaporizer by natural thermal conduction, for the evaporation seawater provides heat, to improve the thermo-efficiency of process.But all have the following disadvantages: on the one hand, because be that direct heat conducting mode is transmitted condensation latent heat, can not be fast by transfer of heat out, heat makes temperature raise in the pipeline inner accumulated, the temperature difference between inner-walls of duct and steam reduces, vapor condensation speed slows down, and causes the steam can not condensation in pipeline fully, causes latent heat of condensation loss; On the other hand, in order to make the whole condensations of steam-energy, condensation pipe is generally longer, has taken a large amount of spaces, has increased the volume of sea water desalting equipment.
Up to now, a kind of recovery utilization rate that can improve latent heat in desalting process is not yet developed in this area, has reduced latent heat losses, reduces the recovery of latent heat device and takes up space, final sea water desaltination cost, the method for desalting seawater of the use distillation method of save energy of reducing.
Summary of the invention
The invention provides the method and apparatus of latent heat utilization efficiency in a kind of raising sea water desaltination of novelty, thereby solved problems of the prior art.
On the one hand, the invention provides a kind of method that improves latent heat utilization efficiency in sea water desaltination, the method comprises the following steps:
A kind of thermounit is provided, and this thermounit comprises thermo-electric device, is positioned at cold junction radiator element and the hot-side heat dissipation sheet of thermo-electric device both sides, and lays respectively between thermo-electric device and cold junction radiator element and the insulating heat-conductive film between thermo-electric device and hot-side heat dissipation sheet; And
Thermounit is switched on, make thermo-electric device produce peltier effect, its both side surface produces respectively endothermic effect and exothermic effect, be transmitted on cold junction radiator element and hot-side heat dissipation sheet by the insulating heat-conductive film respectively, wherein, be cooled and condensation rapidly during steam process cold junction radiator element, the condensation latent heat discharged is absorbed by the cold junction radiator element fast, be transported to the hot-side heat dissipation sheet by thermo-electric device, be used for pre-hot sea water or produce evaporation, thereby make the heat recycle.
On the other hand, the invention provides a kind of equipment that improves latent heat utilization efficiency in sea water desaltination, this equipment comprises:
Thermounit, this thermounit comprises thermo-electric device, is positioned at cold junction radiator element and the hot-side heat dissipation sheet of thermo-electric device both sides, and lays respectively between thermo-electric device and cold junction radiator element and the insulating heat-conductive film between thermo-electric device and hot-side heat dissipation sheet;
Place the prolong of cold junction radiator element; And
Place seawater preheating case or the vaporizer of hot-side heat dissipation sheet.
One preferred embodiment in, described thermo-electric device is nylon frame thermo-electric device, it makes framework with nylon, thermoelectric material is placed in framework, framework is coated with electrode outward.
Another preferred embodiment in, described insulating heat-conductive film is Kapton.
Another preferred embodiment in, Copper Foil is all covered in the both sides of described Kapton, a side and thermo-electric device are weldingly connected, opposite side and radiator element are weldingly connected.
Another preferred embodiment in, the shape of the Copper Foil of a side of described Kapton and thermo-electric device laminating matches with the figure on thermo-electric device surface, opposite side all covers Copper Foil.
Another preferred embodiment in, described cold junction radiator element and hot-side heat dissipation sheet are finned, on each fin, have fenestella.
Another preferred embodiment in, the quantity of described thermounit is one or more.
The accompanying drawing explanation
Fig. 1 is the structural representation of thermounit of the present invention.
Fig. 2 is the structural representation of the equipment of latent heat utilization efficiency in raising sea water desaltination of the present invention.
Embodiment
The present inventor finds after having passed through extensive and deep research, thermo-electric device is transplanted in distillation sea water desalting, utilize Pa Er note (peltier) effect of thermo-electric device, thermo-electric device one end heat absorption after energising, one end heat release, make water vapour energy rapid condensation, and a large amount of condensation latent heat is transported to rapidly to the other end, heating preheated tank or vaporizer maritime interior waters, thereby can effectively improve the recovery utilization rate of latent heat in desalting process, reduce latent heat losses, reducing the recovery of latent heat device takes up space, reduce the sea water desaltination cost, save energy.Based on above-mentioned discovery, the present invention is accomplished.
In a first aspect of the present invention, a kind of method that improves latent heat utilization efficiency in sea water desaltination is provided, the method comprises the following steps:
A kind of thermounit is provided, and this thermounit comprises thermo-electric device, radiator element and insulating heat-conductive film, and described insulating heat-conductive film is between radiator element and thermo-electric device;
Thermo-electric device is switched on power, produce the temperature difference, the radiator element be connected with cold junction is placed in prolong, and the radiator element be connected with hot junction is placed in seawater preheating case or vaporizer; Water vapor runs into radiator element in prolong and rapid condensation discharges a large amount of latent heat, due to the paltie effect of thermoelectric material, the cold junction of thermo-electric device absorbs rapidly heat, be transported to the hot junction of thermo-electric device, and discharge on the radiator element be connected with hot junction, seawater is heated.
In the present invention, when thermo-electric device is applied to electric current, thermo-electric device will produce peltier effect, and its both side surface produces respectively the heat absorption and release effect, by the insulating heat-conductive film, is transmitted on radiator element.Between steam and cold junction radiator element, the temperature difference is larger, during steam process cold junction radiator element, be cooled and condensation rapidly, the condensation latent heat discharged is absorbed by radiator element fast, by thermo-electric device, is transported to the hot-side heat dissipation sheet, be used for pre-hot sea water or produce evaporation, thereby make the heat can recycle.Due to the peltier effect of thermo-electric device, the cold junction radiator element can be because of the absorption condensation latent heat temperature that significantly raises, can keep for a long time and steam between the temperature difference, make the steam all the time can the high-level efficiency condensation.The energy consumption of thermo-electric device itself is very little, and this part energy finally is converted to heat, for heating or evaporation seawater, can not cause the waste of the energy.The voltage that the power of thermo-electric device Process of absorption or liberation of heat effect can be supplied with device by adjusting is controlled.
In a second aspect of the present invention, a kind of equipment that improves latent heat utilization efficiency in sea water desaltination is provided, this equipment comprises:
Thermounit, this thermounit comprises thermo-electric device, radiator element and insulating heat-conductive film, described insulating heat-conductive film is between radiator element and thermo-electric device;
Place the prolong of cold junction radiator element; And
Place seawater preheating case or the vaporizer of hot-side heat dissipation sheet.
In the present invention, described thermounit comprises nylon frame thermo-electric device, copper-clad polyimide insulating heat-conductive film and radiator element.Copper is all covered on the two sides of described polyimide insulative heat conducting film, and the film one side is weldingly connected with nylon frame thermo-electric device, and another side and radiator element are weldingly connected, and have formed a thermounit by a thermo-electric device, two films and two radiator element like this.Two radiator element, one embeds in prolong, and another embeds in seawater preheating case or vaporizer.
In the present invention, described thermo-electric device is made framework with nylon, and thermoelectric material is placed in framework, outside is coated with electrode, has good withstand voltage anti-seismic performance, when thermo-electric device is applied to electric current, due to peltier effect, in its both side surface, produce respectively the heat absorption and release effect.
In the present invention, described insulating heat-conductive film is Kapton, between thermo-electric device and radiator element, be covered with Copper Foil in the film both sides, one side of film and thermo-electric device laminating, the shape of Copper Foil matches with the figure on thermo-electric device surface, and opposite side all covers Copper Foil.
In the present invention, described radiator element is finned, on each fin, has fenestella, and the contact area of radiator element and steam is increased.
Below referring to accompanying drawing.
Fig. 1 is the structural representation of thermounit of the present invention.As shown in Figure 1, thermounit 1 of the present invention comprises thermo-electric device 2, be positioned at cold junction radiator element and the hot-side heat dissipation sheet 4 of thermo-electric device both sides, and lay respectively between thermo-electric device and cold junction radiator element and the insulating heat-conductive film 3 between thermo-electric device and hot-side heat dissipation sheet.
Fig. 2 is the structural representation of the equipment of latent heat utilization efficiency in raising sea water desaltination of the present invention.As shown in Figure 2, in raising sea water desaltination of the present invention, the equipment of latent heat utilization efficiency comprises thermounit, this thermounit comprises thermo-electric device 2, be positioned at cold junction radiator element and the hot-side heat dissipation sheet 4 of thermo-electric device both sides, and lay respectively between thermo-electric device and cold junction radiator element and the insulating heat-conductive film 3 between thermo-electric device and hot-side heat dissipation sheet; Place the prolong 6 of cold junction radiator element; And seawater preheating case or the vaporizer 5 of placing the hot-side heat dissipation sheet.
One side radiator element 4 embeds in prolong 6, and opposite side radiator element 4 embeds in seawater preheating case or vaporizer 5.When electric current passes through thermo-electric device 2, will produce peltier effect, its both side surface produces the temperature difference because of the heat absorption and release effect.Steam in prolong 6 is through radiator element 4, because of radiator element 4 temperature lower, and between steam, the temperature difference is larger, steam contacts with it rear rapid condensation, discharges condensation latent heat simultaneously, endothermic effect due to thermo-electric device 2 cold junctions, condensation latent heat is absorbed by radiator element 4 fast, by thermo-electric device 2, is transported to hot-side heat dissipation sheet 4, and hot-side heat dissipation sheet 4 embeds in seawater preheating case or vaporizer 5, the heat transmitted is used for pre-hot sea water or produce evaporation, thereby makes latent heat recycle effectively.During work, thermo-electric device 2 can maintain the temperature difference on its two sides, makes the cold junction radiator element 4 can be because of the absorption condensation latent heat temperature that significantly raises, can keep for a long time and steam between the temperature difference, make the steam all the time can the high-level efficiency condensation, reduced latent heat losses.Thermo-electric device 2 volumes are little, and steam-energy, in less space and condensation in the short period, has reduced the recovery of latent heat device and taken up space, and has reduced the sea water desaltination cost, has saved the energy.The energy consumption of thermo-electric device 2 itself is very little, and this part energy finally is converted to heat, for heating or evaporation seawater, can not cause the waste of the energy.The voltage that the power of thermo-electric device Process of absorption or liberation of heat effect can be supplied with device by adjusting is controlled.In actual use, can determine the power of thermounit and number is installed according to needs.
Wherein, the framework of thermo-electric device 2 is made by nylon, better than original ceramic base device withstand voltage anti-seismic performance.Insulating heat-conductive film 3 is Kaptons, its two sides is with Copper Foil, figure and electrode coupling with a side Copper Foil of thermo-electric device combination, weld with thermo-electric device 2 and radiator element 4 respectively the film both sides, make like this between thermo-electric device 2 and radiator element 4 and also there is good heat conductivity when keeping insulation, make heat to be passed to hot-side heat dissipation sheet 4 by cold junction radiator element 4 rapidly, reduced calorific loss.Have fenestella on radiator element 4 each fin, the contact area of radiator element and steam is increased, improved condensation efficiency.
Major advantage of the present invention is:
Compared to prior art, the present invention's efficiency of latent heat recycle in the desalting process of having utilized thermo-electric device to improve, reduced latent heat losses; The thermo-electric device volume is little, and steam-energy, in less space and condensation in the short period, has reduced the recovery of latent heat device and taken up space, and has reduced the sea water desaltination cost, has saved the energy.Thermo-electric device of the present invention adopts nylon as framework, makes device have stronger withstand voltage anti-seismic performance, keeps stable performance, has extended work-ing life; Adopt the copper-clad polyimide film, can overcome the frangible problem of traditional ceramics substrate heat electrical part, Copper Foil is covered in both sides can make film and thermo-electric device and radiator element welding closely, has improved heat-conductive characteristic; Also can determine the power of thermounit and number is installed according to practical situation.
Embodiment
Further set forth the present invention below in conjunction with specific embodiment.But, should be understood that these embodiment only do not form limitation of the scope of the invention for the present invention is described.The test method of unreceipted actual conditions in the following example, usually according to normal condition, or the condition of advising according to manufacturer.Except as otherwise noted, all per-cent and umber are by weight.
embodiment 1
Manufactured a small-sized principle prototype, structure with reference to Fig. 2, in the front segment pipe of seawater preheating case, the mixture that working medium is seawater and air, the normal temperature and pressure lower volume is than being 1:100, and seawater flow is 3mL/ minute, and air is 300mL/ minute, operating pressure is 0.2MPa, and pipe-line blending thing temperature is 80 ℃; The steam mixture temperature is 130 ℃ at the entrance of prolong, and thermo-electric device is of a size of 50mmx50mmx4mm, places a thermounit, and the total latent heat power of steam mixture is 109.7W.Through measuring, the electric power of thermounit consumption is 13.2W, and thermounit hot junction thermal discharge is 129.6W, and the cold junction caloric receptivity is 116.8W, and the 106.5%(that has reclaimed water vapor condensation latent heat comprises the heat that part single-phase liquid water for cooling discharges).Same if there is no thermounit, under the same terms, only have the heat of 17.2W to absorb through measuring, and has been equivalent to reclaim 15.6% of water vapor condensation latent heat.Utilize thermounit, water vapour recovery of latent heat rate is increased to 106.5% from 15.6%, and the electric power that device consumes also is converted into heat, thereby has greatly reduced energy consumption, has saved cost.
embodiment 2
With reference to the structure of Fig. 2, in the front segment pipe of seawater preheating case, the mixture that working medium is seawater and air, under normal temperature and pressure, seawater flow is 8mL/ minute, and air is 800mL/ minute, and operating pressure is 0.1MPa, and pipe-line blending thing temperature is 80 ℃; The steam mixture temperature is 130 ℃ at the entrance of prolong, and thermo-electric device size 50mmx50mmx4mm places three thermounits, and the total latent heat power of steam mixture is 292.6W.Through measuring, the electric power of thermounit consumption is 65.2W, thermounit hot junction thermal discharge 308.8W, and the cold junction caloric receptivity, for 244W, has reclaimed 83.4% of water vapor condensation latent heat.Same if there is no thermounit, under the same terms, only have the 54.4W heat to absorb through measuring, and has been equivalent to reclaim 18.6% of water vapor condensation latent heat.Utilize thermounit, water vapour recovery of latent heat rate is increased to 83.4% from 18.6%.
All documents of mentioning in the present invention are all quoted as a reference in this application, just as each piece of document quoted separately as a reference.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after having read above-mentioned teachings of the present invention, these equivalent form of values fall within the application's appended claims limited range equally.

Claims (8)

1. a method that improves latent heat utilization efficiency in sea water desaltination, the method comprises the following steps:
A kind of thermounit (1) is provided, this thermounit (1) comprises thermo-electric device (2), be positioned at cold junction radiator element and the hot-side heat dissipation sheet (4) of thermo-electric device (2) both sides, and lay respectively between thermo-electric device (2) and cold junction radiator element (4) and the insulating heat-conductive film (3) between thermo-electric device (2) and hot-side heat dissipation sheet (4); And
Thermounit is switched on, make thermo-electric device produce peltier effect, its both side surface produces respectively endothermic effect and exothermic effect, be transmitted on cold junction radiator element and hot-side heat dissipation sheet by the insulating heat-conductive film respectively, wherein, be cooled and condensation rapidly during steam process cold junction radiator element, the condensation latent heat discharged is absorbed by the cold junction radiator element fast, be transported to the hot-side heat dissipation sheet by thermo-electric device, be used for pre-hot sea water or produce evaporation, thereby make the heat recycle.
2. an equipment that improves latent heat utilization efficiency in sea water desaltination, this equipment comprises:
Thermounit (1), this thermounit (1) comprises thermo-electric device (2), be positioned at cold junction radiator element and the hot-side heat dissipation sheet (4) of thermo-electric device (2) both sides, and lay respectively between thermo-electric device (2) and cold junction radiator element (4) and the insulating heat-conductive film (3) between thermo-electric device (2) and hot-side heat dissipation sheet (4);
Place the prolong (6) of cold junction radiator element (4); And
Place seawater preheating case or the vaporizer (5) of hot-side heat dissipation sheet (4).
3. equipment as claimed in claim 2, is characterized in that, described thermo-electric device (2) is nylon frame thermo-electric device, and it makes framework with nylon, and thermoelectric material is placed in framework, and framework is coated with electrode outward.
4. equipment as claimed in claim 2, is characterized in that, described insulating heat-conductive film (3) is Kapton.
5. equipment as claimed in claim 4, is characterized in that, Copper Foil is all covered in the both sides of described Kapton, and a side and thermo-electric device are weldingly connected, and opposite side and radiator element are weldingly connected.
6. equipment as claimed in claim 4, is characterized in that, described Kapton matches with the figure on thermo-electric device surface with the shape of the Copper Foil of a side of thermo-electric device laminating, and opposite side all covers Copper Foil.
7. equipment as claimed in claim 2, is characterized in that, described cold junction radiator element and hot-side heat dissipation sheet (4) are finned, on each fin, have fenestella.
8. equipment as claimed in claim 2, is characterized in that, the quantity of described thermounit (1) is one or more.
CN2012101812854A 2012-06-04 2012-06-04 Method and equipment for improving latent heat utilization rate in seawater desalination Pending CN103449543A (en)

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CN2012101812854A CN103449543A (en) 2012-06-04 2012-06-04 Method and equipment for improving latent heat utilization rate in seawater desalination
PCT/CN2012/081522 WO2013181891A1 (en) 2012-06-04 2012-09-18 Method and apparatus for increasing latent heat utilization efficiency during seawater desalination

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