SE537817C2

SE537817C2 - Heat

Info

Publication number: SE537817C2
Application number: SE1100648A
Authority: SE
Inventors: Torsten Bauer
Original assignee: Sandvikens Projektutveckling Ab
Priority date: 2011-09-06
Filing date: 2011-09-06
Publication date: 2015-10-27
Also published as: SE1100648A1

Abstract

S AMMANDR AG Va.rmevOxlare innefattande ett inre ror vilket dr bearbetat genom att rorvaggarna dr nagot intryckta. Intryckningens storlek di- mensioneras beroende pa mediets forsmutsningsgrad for att halla rena tubvaggar och flode. Beakta orienteringen av intryckningarna dal- den nedre delen av tuben inte har nagon intryckning (bra vid laga floden). Intryckningarna dr sedan 45 grader mot den vertikala linjen, detta gradantal kan justeras for olika forhallanden. Detta for att fa en kalkylerad turbulens som dels har till uppgift att halla de inre rorvOggarna rena, vilket hojer varmeoverforingen. Dels att den normala ratlinjiga lamindra flodesbilden uppnor och en turbulens skapas for att nyttja mycket mer av varmeinnehallet i mediet. Mediet far cid en battre vinkel mot rorytan och mer energi kan overforas. Aven intryckningarnas utbredning och avstand mellan dem (i flodesriktningen) beraknas individuellt for varje applikation beroende pa mediets forsmutsningsgrad och flode. I ritningen visas en standard konfiguration. Mellan det yttre roret och det inre roret transporteras det mediet som ska varmas upp. Utrymmet for mediet indelas med avskOrmningar som har en liten oppning vilken Or orienterad med 120 graders vridning i flodesriktningen. S AMMANDR AG Heat exchanger comprising an inner tube which is machined by the rudder cradles being slightly depressed. The size of the indentation is dimensioned depending on the degree of contamination of the medium in order to keep clean tube walls and flow. Note the orientation of the indentations - the lower part of the tube has no indentation (good at low tide). The indentations then pull 45 degrees towards the vertical line, this number of degrees can be adjusted for different conditions. This is to get a calculated turbulence which partly has the task of keeping the inner rudder walls clean, which increases the heat transfer. Secondly, that the normal straight-line laminate river image achieves and a turbulence is created to use much more of the heat content in the medium. The medium has a better angle to the rudder surface and more energy can be transferred. The distribution of the indentations and the distance between them (in the direction of the river) are also calculated individually for each application depending on the degree of contamination and flow of the medium. The drawing shows a standard configuration. The medium to be heated is transported between the outer tube and the inner tube. The space for the medium is divided by shields which have a small opening which is oriented with a 120 degree rotation in the direction of the river.

Description

VArmevaxlare Tekniskt omrade Uppfinningen är mom omrddet varmevdxling och speciellt i omrd5 det att vdxla en fororenad/kontaminerad vdtska mot ett renare media sdsom vatten. Mer specifikt kan denna vdrmevdxling ske i foljande miljoer; Processreturvatten mot nytt vatten eller for uppvdrmning Avloppsvatten mot vatten till varmvattenberedning eller fOruppvdrmning Kontaminerade vatten mot nytt tillfort vatten Processmedier mot andra medier sd att process-mediet kan inneslutas i en krets och Ateranvdndas med en loop rening. TECHNICAL FIELD The invention is in the field of heat exchange and especially in the field of exchanging a contaminated / contaminated liquid for a cleaner medium such as water. More specifically, this vdrmevdxling can take place in the following environments; Process return water to fresh water or for heating Waste water to water for hot water preparation or preheating Contaminated water to fresh water Water Process media to other media so that the process medium can be enclosed in a circuit and reused with a loop treatment.

Uppfinningens bakgrund Att minska energiforbrukningen är idag en alltmer prioriterad frdga. Det gdller bAde vid nyinstallationer och vid uppgradering av befintlig utrustning. Det är av storsta intresse ur bade energi- och miljesynpunkt att reducera energibehovet och/eller hdlla processvattenkretsar slutna och ddrmed ej kontaminera naturen. Background of the invention Reducing energy consumption is today an increasingly prioritized tool. This applies both to new installations and to upgrading existing equipment. It is of the greatest interest from both an energy and environmental point of view to reduce the energy demand and / or keep process water circuits closed and thus not contaminate nature.

Denna vdrmevdxlare kan nyttjas dven vid starkt kontaminerade medier dà varmevaxlaren är betydligt mindre kanslig fOr inre beldggningar an konventionella vdrmevdxlare. De konventionella varmevdxlarna forlorar snabbt sin vdrmeoverforing i kontaminerade medier medan denna vdrmevdxlare upprdtthAller denna vdrmeoverforing betydligt bdttre, det kan gdlla spillvatten, processvatten, avlopp och andra fororenade medier. This heat exchanger can also be used for highly contaminated media as the heat exchanger is much less susceptible to internal heating than conventional heat exchangers. The conventional heat exchangers quickly lose their heat transfer in contaminated media, while this heat exchanger maintains that this heat transfer is much better, it can apply to waste water, process water, sewage and other contaminated media.

Dd beldggningstillvdxten hdmmas i denna vdrmevdxlare minskar dven korrosionsrisken, dá normalt beldggningar kan ge upphov till korrosion under eller i beldggningar beroende pd syraceller eller bakterier. 1 Uppfinningens syfte Det finns sex huvudsakliga syften med denna varmevaxlare: Det forsta syftet är att tillvarata den energi som annars gar 5 till spillo via avloppet fran bostader, skolor, badhus etc. vid duschning eller andra varma kallor, vilket resulterar i ett bra ekonomiskt utfall med kort avskrivningstid. As the growth of deposits is inhibited in this heat exchanger, the risk of corrosion is also reduced, as normally deposits can give rise to corrosion during or in deposits depending on acid cells or bacteria. Object of the invention There are six main objects with this heat exchanger: The first object is to utilize the energy that is otherwise wasted via the drain from homes, schools, bathhouses, etc. when showering or other hot coals, which results in a good economic outcome. with short depreciation period.

Det andra syftet är att bibehalla en hog varmeoverfOring av det primara mediet till det sekundara mediet da installationen minimerar belaggningstillvaxten och ger en markant okad exponering av det primara mediet for varmeoverforingen vilket markant okar varmevaxlarens effektivitet. The second purpose is to maintain a high heat transfer from the primary medium to the secondary medium as the installation minimizes coating growth and gives a markedly increased exposure of the primary medium to the heat transfer which markedly increases the efficiency of the heat exchanger.

Det tredje syftet med denna installation ar inget eller ett mycket ringa underhall av varmevaxlaren och en forlangning av livslangden for materialet genom installationens anpassade utformning. The third purpose of this installation is no or very little maintenance of the heat exchanger and an extension of the service life of the material through the adapted design of the installation.

Det fjarde syftet är mom industrin och dylikt kunna tillvarata energin fran olika typer av processvatten. Detta kan aven inkludera inforandet av slutna kretsar med olika typer av processvatten eventuellt kombinerat med en loop rening. The fourth purpose is to be able to utilize the energy from different types of process water. This may also include the introduction of closed circuits with different types of process water possibly combined with a loop purification.

Det femte syftet är fordelen med utformningen av sekundarkretsen, dar en bra varmeoverforing sker samt att det finns en inbyggd ackumulatoreffekt sa att det finns energi att avge vid vane uppstart vid ett diskontinuerligt flode pa primarsidan. The fifth purpose is the advantage of the design of the secondary circuit, where a good heat transfer takes place and that there is a built-in accumulator effect so that there is energy to emit at the usual start-up at a discontinuous flow on the primary side.

Det sjatte syftet är att denna varmevaxlare bidrar till att minska varmebehovet och clamed minskar miljopaverkan, det är en gron produkt. 2 Det sjunde syftet och kanske det viktigaste Or att denna varmevdxlarinstallation ska ge ett sa fordelaktigt ekonomiskt, energimOssigt, tekniskt och miljamOssigt incitament att det installeras omgaende dl det ur alla aspekter är formanligt. The sixth purpose is that this heat exchanger helps to reduce heat demand and clamed reduces the environmental impact, it is a green product. 2 The seventh purpose and perhaps the most important Or that this heat exchanger installation should provide such an advantageous economic, energy, technical and environmental incentive that it is installed immediately dl it from all aspects is formable.

Beskrivning av uppfinningen Bifogade ritningar (2st) visar varmevaxlaren i form av ett inre ror cidr process, avlopps- eller kontaminerade mediet transport-eras, det s.k. primOra flodet. I mellanrummet mellan det yttre och inre roret transporteras kallvatten, paspadningsvatten, media for uppvarmning eller dylikt, vilket är sekundOrflodet. Description of the invention The accompanying drawings (2 pcs) show the heat exchanger in the form of an internal pipe cidr process, sewage or contaminated medium is transported, the so-called primOra river. In the space between the outer and inner rudder, cold water, padding water, media for heating or the like are transported, which is the secondary flood.

Det inre roret Or bearbetat genom att rorvaggarna Or nagot intryckta. Intryckningens storlek dimensioneras beroende pa medi- ets forsmutsningsgrad och flode. Beakta orienteringen av intryckningarna dar den nedre delen av tuben inte har nagon intryckning (bra vid laga floden). Intryckningarna Or sedan 45 grader mot den vertikala linjen, detta gradantal kan justeras for olika forhallanden. Detta for att fa en viss turbulens som dels har till uppgift att halla de inre rorvOggarna rena, vilket hojer varmeoverforingen. Dels att den normala ratlinjiga laminara flodesbilden upphor och en turbulens skapas for att nyttja mycket mer av varmeinnehallet i mediet. Mediet far cid en effektivare vinkel mot rorytan och mer energi kan Overforas. Aven intryckningarnas utbredning och avstand mellan dem (i flodesriktningen) berdknas individuellt for vane applikation beroende pa mediets forsmutsningsgrad och flode. I ritningen visas en standardkonfiguration. The inner rudder Or processed by the rudder cradles Or slightly depressed. The size of the indentation is dimensioned depending on the degree of contamination and flow of the medium. Observe the orientation of the indentations where the lower part of the tube has no indentation (good at low tide). The indentations Or then 45 degrees towards the vertical line, this number of degrees can be adjusted for different conditions. This is to get a certain turbulence which partly has the task of keeping the inner rudder walls clean, which increases the heat transfer. Secondly, that the normal straight-line laminar river image ceases and a turbulence is created to use much more of the heat content in the medium. The medium has a more effective angle to the rudder surface and more energy can be transferred. The distribution of the indentations and the distance between them (in the direction of the river) are also calculated individually for the usual application depending on the degree of contamination and flow of the medium. The drawing shows a standard configuration.

Mellan det yttre roret och det inre raret transporteras det medium som ska varmas upp. Utrymmet for mediet indelas med avskarmningar som har en liten oppning vilken är orienterad med 120 graders vridning i flodesriktningen. Detta for att Oka uppehallstiden och darmed fa en hattre varmeatervinning. Denna 3 varmeatervinning okas ocksa i och med att ytan mot varmemediet ger upphov av turbulens i sekundarflodet, vilket akar varmeOverforingen. Da utrymmet mellan inbuktningarna är betydande sá kan aven en del av det uppvarmda vattnet ackumuleras, vilket är viktigt vid intermittent drift for primarmediet som avger energi. The medium to be heated is transported between the outer tube and the inner tube. The space for the medium is divided by shields which have a small opening which is oriented with a 120 degree rotation in the river direction. This is to increase the residence time and thus get a better heat theater gain. This 3 heat theater gain is also increased in that the surface against the heating medium gives rise to turbulence in the secondary flow, which increases the heat transfer. Since the space between the indentations is significant, some of the heated water can also accumulate, which is important in intermittent operation of the primary medium which emits energy.

Det yttre roret kan och bor isoleras vid de fiesta typer av installationer som är avsedda med denna uppfinning. 10 Samtliga delar och ror är utfOrda i korrosionsfritt material med minst syrafast rostfritt stal. The outer tube can and should be insulated in most types of installations provided by this invention. All parts and tubes are made of corrosion-free material with at least acid-resistant stainless steel.

Genom att inloppet av det kalla sekundara mediet som ska varmas upp är anslutet i batten av konstruktionen och det sekundara uppvarmda mediet tas ut i toppen av konstruktionen och att varmeoverforingen gars motstroms och att flodet styrs nas ett maximalt utnyttjande av energin. By the inlet of the cold secondary medium to be heated is connected in the batten of the structure and the secondary heated medium is taken out at the top of the structure and the heat transfer is countercurrent and the flow is controlled a maximum utilization of the energy.

Sam ett exempel kan namnas att nar man duschar sa fas energitillskottet redan fran borjan cid konstruktionen har ackumulerat tidigare uppvarmning. 4 An example can be mentioned that when showering, the phase of the energy supplement from the very beginning and the construction has accumulated previous heating. 4

Claims

1. AT A TKR OF 1. Heat exchangers of the countercurrent type for heat exchange from a primary medium, in the form of waste water, to a secondary medium, in the form of water for hot water preparation or for heating, comprising an inner tube, arranged to conduct the primary medium in a first longitudinal direction, and an outer tube, arranged to guide the secondary medium in the space between the inner and the outer tube in a second, opposite longitudinal direction, characterized in that the inner tube comprises depressions arranged to create turbulence in the flow of the primary medium , which indentations Or are arranged at an angle of about 45 degrees to the vertical line so that no such indentations Or are arranged in the lower part of the inner tube, and that the outer tube by means of shields Or is divided longitudinally into cells, which cells communicates with each other via smaller openings which are oriented in relation to each other with a reciprocal rotation of 120 degrees between pa v the following shields, as well as which cells Or arranged to Achieve an accumulating effect with respect to the secondary medium. Heat exchanger according to claim 1, characterized in that the heat exchanger is made in acid-resistant size. Heat exchanger according to any one of the preceding claims, characterized in that the heat exchanger comprises external insulation. 4. A heat exchanger according to any one of the preceding claims,

1. characterized in that the heat exchanger Or is mounted so that the slope of its longitudinal direction slightly exceeds the normal slope of the drain, i.e. 5 mm per 1000 mm, and that the primary medium is led through the inner tube from its right to its bearings. Spirit. A A (1: 4)