SE534513C2 - Plate heat exchangers including UV-generating devices - Google Patents
Plate heat exchangers including UV-generating devices Download PDFInfo
- Publication number
- SE534513C2 SE534513C2 SE0950999A SE0950999A SE534513C2 SE 534513 C2 SE534513 C2 SE 534513C2 SE 0950999 A SE0950999 A SE 0950999A SE 0950999 A SE0950999 A SE 0950999A SE 534513 C2 SE534513 C2 SE 534513C2
- Authority
- SE
- Sweden
- Prior art keywords
- heat exchanger
- plate heat
- plates
- plate
- fluid
- Prior art date
Links
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 10
- 230000003197 catalytic effect Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 230000001699 photocatalysis Effects 0.000 claims description 5
- 239000004408 titanium dioxide Substances 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/08—Radiation
- A61L2/10—Ultraviolet radiation
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
- F28F19/02—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings
- F28F19/06—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using coatings, e.g. vitreous or enamel coatings of metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/086—Heat exchange elements made from metals or metal alloys from titanium or titanium alloys
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/322—Lamp arrangement
- C02F2201/3225—Lamps immersed in an open channel, containing the liquid to be treated
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/20—Prevention of biofouling
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/20—Safety or protection arrangements; Arrangements for preventing malfunction for preventing development of microorganisms
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Water Supply & Treatment (AREA)
- Toxicology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Epidemiology (AREA)
- Physical Water Treatments (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to a plate heat exchanger comprising a number of plates (10) stacked on top of each other, UV generating members (14) arranged such that surfaces of said plates (10) are radiated with UV light at the inlet (12) of the plate heat exchanger.
Description
TREATMENT DEVICE TECHNICAL AREAThe present invention relates to a device for treatment of fluids and in particular adevice that prevents the build-up of organic matter on surfaces of plate heat exchangers.
BACKGROUND OF INVENTIONHeat exchangers are used in many applications and for many purposes where energy in one media is extracted in order to obtain and use the energy.
The applications are numerous and water is often used as one media that flowsthrough a heat exchanger. Also, often heat exchangers of a plate-type configurationare used, where a plurality of plates are stacked on each other, forming channelsbetween the plates. The two media are then introduced in the channels, one media inevery second channel. Due to the large heat transferring surfaces of the heat exchanger, the heat from one media is transferred to the other media.
Depending on type of application and type of media, it may contain organic matterthat will deposit on the surfaces of the plate exchanger and also grow on the surfaces,especially if the conditions for this are good, creating growth of organisms, fungi,bacteria, viruses and the like, i.e. biofilms. These biofilms degrade heat transferefficiency, increase pressure drop (and pumping power required) through exchangertubes and plates by substantially reducing the transfer capability due to insulationeffects as well as flow rates through these machines, and can lead to corrosion problems under the film.
Several attempts have been made for removing the biofilm, mainly includingtreatment with chemicals. However this is not very environmentally friendly andrequires thus closed systems where the heat exchangers are flushed with a solvent.This treatment also requires a shut-down of the system during cleaning which negatively affects the production.
Other attempts of removing the biofilm comprise the use of ozone that is injected intothe system. lt has been found that ozone both removes the film but also prevents filmfrom being created on surfaces. Even though ozone is capable of destroying mostmicroorganisms like algae and bacteria by rupturing their cell walls, a process towhich microorganisms cannot develop immunity, some organisms require morepowerful treatment or longer exposure times than what is really practical in many applications.
BRIEF DESCRIPTION OF INVENTIONThe aim of the present invention is to remedy most drawbacks with the state of theart systems and to provide a system which definitely and totally removes any unwanted matter.
This aim is obtained by a system defined by the features of the independent patent claim.
Preferable embodiments ofthe invention form the subject ofthe dependent patent claims.
According to a main aspect of the invention it is characterised by a plate heatcomprising a number of plates stacked on top of each other, UV generating membersarranged such that surfaces of said plates are radiated with UV light at the inlet of the plate heat exchanger.
According to another aspect of the invention, at least the irradiated surfaces of saidplates are arranged with material displaying photo-catalytic properties, whereby saidUV light in combination with said catalytic surfaces create radicals, which radicals areeffective in treating fluid through the heat exchanger as well as removing and preventing scale on said surfaces of the heat exchanger.
According yet another aspect of the invention, the surfaces of the plates are made of or covered with, titanium, which surfaces have been treated to form titanium dioxide.
According to a further aspect of the invention, UV generating members also are arranged at the outlet of the heat exchanger.
According to yet a further aspect of the invention, it further comprises a net made ofor covered with a material displaying photo-catalytic properties and positioned in the vicinity of said UV generating members.
The advantages of the present invention are several. The application of UV- light inthe plate exchanger will promote the removal of any biofilm on the surfaces of the plate heat exchanger as well as prevent any build-up of biofilm.
The application of material displaying catalytic properties in the heat exchanger andirradiating it with UV light will create a very strong oxidation effect in that large amounts of radicals are created.
The radicals are extremely powerful in destroying any matter in the water, wherebyno biofilm can be built up in the heat exchanger. Also if a treatment memberaccording to the invention is connected to a heat exchanger having biofilm on its surfaces, the radicals will effectively remove the biofilm. lt is of course preferable ifthe surfaces ofthe heat exchanger are display photo-catalytic properties, but plate exchangers may be made by other material that do notdisplay any catalytic properties. Then catalysts may be placed in the inlet andradiated, such as nets comprising titanium dioxide. Of course both catalytic surfaces and catalytic nets may be used.
These and other aspects of, and advantages with, the present invention will becomeapparent from the following detailed description of the invention and from the accompanying drawings.
BRIEF DESCRIPTION OF DRAWINGSln the following detailed description of the invention, reference will be made to the accompanying drawings, of which Fig. 1 shows schematically the layout and function of a plate heat exchanger,andFig. 2 shows schematically a heat exchanger arranged with treatment means at an in|et of the heat exchanger.
DETAILED DESCRIPTION OF THE INVENTION The system according of the present invention shown schematically in the drawingsis utilizing AOT, i.e. Advanced Oxidation Technology as a treatment function. TheAOT technology is based on UV-light and catalysts for creating radicals, which act to destroy and decompose many organisms and matter.
According to the invention, it comprises a plate heat exchanger 10 provided with anumber of plates, between which channels run, Fig. 1. The channels are arrangedsuch that one fluid runs in every second channel and a second fluid in every second channel ln order to have maximum efficiency in treating the fluid that runs in the channel, theplates of the heat exchanger 10 are made of or covered with titanium treated tocreate titanium dioxide. Further the in|et 12 ofthe heat exchanger 10, through whichthe fluid to be treated is intended to run, is provided with UV generating members 14,Fig. 2, such as UV lamps, capable of emitting UV radiation. A net 16 covered by or made of, titanium, and treated to create titanium dioxide, is also placed in the in|et.
The UV lamps 14 thus radiate the surfaces of the plate heat exchanger as well as thenet 16, whereby a photo-catalytic reaction creates a large amount of radicals, whichradicals effectively destroys any organisms and other matter in the liquid as well asremoves any biofilm that may have been built up on the surfaces of the heatexchanger. Further use ofthe UV lamps will effectively prevent any build-up of biofilmon the surfaces. lt is to be understood that the UV lamps may also be placed at the outlet of the plate heat exchanger for further treatment of the fluid. lt is to be understood that the embodiment described above and shown in thedrawings is to be regarded only as a non-Iimiting example of the invention and that it may be modified in many ways within the scope of the patent claims.
Claims (1)
1. Plate heat exchanger comprising - a number of plates stacked on top of each other, between which plateschannels run, where the channels are arranged such that one fluid runs inevery second channel and a second fluid in every second channel, - UV generating members arranged such that surfaces of said plates are radiated with UV light at the inlet of the plate heat exchanger. Plate heat exchanger according to claim 1, wherein at least the irradiatedsurfaces of said plates are arranged with material displaying photo-catalyticproperties, whereby said UV light in combination with said catalytic surfacescreate radicalsywhich radicals are effective in treating fluid through the heatexchanger as well as removing and preventing scale on said surfaces of the heat exchanger.Plate heat exchanger according to clam 2, wherein the surfaces of the platesare made of or covered with, titanium, which surfaces have been treated to form titanium dioxide. Plate heat exchanger according to clam 1, wherein UV generating members " also are arranged at 'the outlet of the heat exchanger. Plate exchanger according to any of the preceding claims, wherein it furthercomprises a net made of or covered with a material displaying photo-catalytic properties and positioned in the vicinity of said UV generating members.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0950999A SE534513C2 (en) | 2009-12-21 | 2009-12-21 | Plate heat exchangers including UV-generating devices |
PCT/SE2010/051423 WO2011078771A1 (en) | 2009-12-21 | 2010-12-20 | Plate heat exchanger comprising uv generating members |
EP10839892.6A EP2515950A4 (en) | 2009-12-21 | 2010-12-20 | Plate heat exchanger comprising uv generating members |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0950999A SE534513C2 (en) | 2009-12-21 | 2009-12-21 | Plate heat exchangers including UV-generating devices |
Publications (2)
Publication Number | Publication Date |
---|---|
SE0950999A1 SE0950999A1 (en) | 2011-06-22 |
SE534513C2 true SE534513C2 (en) | 2011-09-13 |
Family
ID=44196028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE0950999A SE534513C2 (en) | 2009-12-21 | 2009-12-21 | Plate heat exchangers including UV-generating devices |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2515950A4 (en) |
SE (1) | SE534513C2 (en) |
WO (1) | WO2011078771A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10228199B2 (en) * | 2014-12-12 | 2019-03-12 | Koninklijke Philips N.V. | Cooling apparatus for cooling a fluid by means of surface water |
CN107003092B (en) * | 2014-12-12 | 2020-11-13 | 皇家飞利浦有限公司 | Cooling device for cooling a fluid with the aid of surface water |
BR112017012048A2 (en) * | 2014-12-12 | 2018-01-16 | Koninklijke Philips Nv | cooling apparatus, and ship |
CA3011627A1 (en) | 2016-01-20 | 2017-07-27 | Koninklijke Philips N.V. | A device having surfaces and an anti-biofouling system comprising at least one anti-biofouling light source for emitting rays of anti-biofouling light |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6266040A (en) * | 1985-09-13 | 1987-03-25 | Matsushita Electric Ind Co Ltd | Air conditioning ventilation fan with sterilizing lamp |
JPS63162091A (en) * | 1986-12-24 | 1988-07-05 | Hitachi Ltd | Device for preventing sticking of aquatic living matter |
JPH0478709A (en) * | 1990-07-19 | 1992-03-12 | Isuzu Motors Ltd | Feeling control type air conditioner for vehicle |
JPH10185228A (en) * | 1996-12-24 | 1998-07-14 | Diamond Electric Mfg Co Ltd | Air conditioner with deodorizing and antibacterial function |
US6500267B1 (en) * | 1998-10-06 | 2002-12-31 | Net Zero, Inc. | Reduction of energy consumption in a cooling or heating system through UVC irradiation |
JP2000234894A (en) * | 1999-02-12 | 2000-08-29 | Zexel Corp | Air-conditioning unit |
JP2000320854A (en) * | 1999-05-13 | 2000-11-24 | Sharp Corp | Indoor machine of air-conditioner |
US6443335B1 (en) * | 1999-11-10 | 2002-09-03 | Shurflo Pump Manufacturing Company, Inc. | Rapid comestible fluid dispensing apparatus and method employing a diffuser |
JP3728722B2 (en) * | 2000-11-15 | 2005-12-21 | 株式会社カントー | Heat exchanger for bathtub |
US6978793B1 (en) * | 2003-05-21 | 2005-12-27 | Phex Llc | Portable cleaning apparatus and method for single pass plate and frame heat exchangers |
JP4716309B2 (en) * | 2005-02-28 | 2011-07-06 | 財団法人電力中央研究所 | Heat exchanger |
WO2007012202A1 (en) * | 2005-07-29 | 2007-02-01 | Freedom Water Company Ltd. | Water condenser |
-
2009
- 2009-12-21 SE SE0950999A patent/SE534513C2/en not_active IP Right Cessation
-
2010
- 2010-12-20 EP EP10839892.6A patent/EP2515950A4/en not_active Withdrawn
- 2010-12-20 WO PCT/SE2010/051423 patent/WO2011078771A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP2515950A1 (en) | 2012-10-31 |
EP2515950A4 (en) | 2014-02-26 |
SE0950999A1 (en) | 2011-06-22 |
WO2011078771A1 (en) | 2011-06-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
NUG | Patent has lapsed |