WO2021180388A1 - Système de chauffage - Google Patents

Système de chauffage Download PDF

Info

Publication number
WO2021180388A1
WO2021180388A1 PCT/EP2021/051209 EP2021051209W WO2021180388A1 WO 2021180388 A1 WO2021180388 A1 WO 2021180388A1 EP 2021051209 W EP2021051209 W EP 2021051209W WO 2021180388 A1 WO2021180388 A1 WO 2021180388A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorber
heating system
reactor
electromagnetic radiation
reactor wall
Prior art date
Application number
PCT/EP2021/051209
Other languages
German (de)
English (en)
Inventor
Michael Bisges
Tim Böscke
Claus Jaeger
Original Assignee
Infinite Flex GmbH
Osram Opto Semiconductors Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Infinite Flex GmbH, Osram Opto Semiconductors Gmbh filed Critical Infinite Flex GmbH
Publication of WO2021180388A1 publication Critical patent/WO2021180388A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0033—Heating devices using lamps
    • H05B3/0038—Heating devices using lamps for industrial applications
    • H05B3/0052—Heating devices using lamps for industrial applications for fluid treatments

Definitions

  • the invention relates to a heating system for supplying thermal energy to a flowable substance.
  • the thermal energy is generated by conversion from another form of energy, namely electrical energy.
  • the heat transfer to the flowing material takes place by way of convection.
  • convection or flow transport the thermal energy is transported through the flowable substance.
  • the convective transport of thermal energy is therefore also referred to as heat transfer.
  • the flow of the material can be forced or created as free convection due to thermodynamic imbalances.
  • a heater is called convection heating if the majority of its heat is given off by convection. However, convection heating also always emits thermal radiation.
  • a heating system in particular a micro heater with low power up to a maximum of 50 watts and temperatures up to 500 degrees Celsius and heating surfaces between 1 mm 2 and 1 m 2 , is to be created, which enables a flowable substance to be heated up quickly.
  • the absorber surface comes into direct contact, but not with the electrically operated radiation source arranged outside the reactor for generating the electromagnetic radiation which strikes the absorber surface.
  • electrical energy is converted into electromagnetic radiation in the electrically operated radiation source.
  • the electromagnetic radiation hitting the absorber surface is converted into thermal energy.
  • the thermal energy is transferred by convection from the absorber to the flowing substance in the reactor.
  • the flowable substance can be liquid or gaseous and in particular also includes liquid or gaseous substance mixtures.
  • Typical flowable substances to which the thermal energy is transferred are water and air.
  • the heating system according to the invention can be used advantageously in the case of chemically active substances in particular, because the substance only comes into contact with the absorber surface, but not with the electrically operated radiation source.
  • the substance is heated, vaporized or made to react.
  • the absorber surface which only comes into contact with the substance, preferably consists of a material with high and high resistance to chemical influences Resistance to wear to ensure long-term operation of the heating system.
  • the materials used for the absorbers are, in particular, materials from technical ceramics or else silicon.
  • the electromagnetic radiation generated by the electrically operated radiation source and the absorber are matched to one another in such a way that the absorber's degree of absorption is at least 50%, ideally at least 90%.
  • the degree of absorption states what proportion of the power of the incident electromagnetic radiation is absorbed, i.e. absorbed, by the absorber surface.
  • a high level of absorbed energy increases the thermal energy of the absorber and accelerates the heating of the substance flowing through the reactor.
  • the degree of absorption depends on the direction of irradiation and the frequency of the electromagnetic radiation hitting the absorber as well as on the material of the absorber.
  • the electrically operated radiation source for generating the electromagnetic radiation can for example have at least one LED or a laser.
  • the radiation source can additionally have optics that align the radiation onto the absorber surface with the aid of lenses and / or reflectors.
  • the electrically operated radiation source is preferably set up in such a way that electromagnetic radiation is emitted in a wavelength range between 10 nm and 1 mm.
  • the aforementioned wavelength range covers the infrared spectrum, the visible spectrum and the UV spectrum.
  • the electrically operated one emits Radiation source Light in the visible spectrum in the wavelength range between 380 nm (violet) and 780 nm (red).
  • the reactor has a reactor wall adjoining each flow path and the absorber is a component of this reactor wall.
  • the absorber has a higher thermal resistance and at the same time a low heat capacity. As a result of the incident electromagnetic radiation, it heats up within a short time, preferably to temperatures well above 100 degrees Celsius.
  • the absorber can be arranged in an alternative embodiment of the invention on an inside of the reactor wall or at a distance from the reactor wall within the reactor.
  • the arrangement at a distance from the reactor wall within the reactor has the advantage that the entire absorber surface comes into contact with the flowable substance within the reactor.
  • An advantageous possibility for producing a structural unit from absorber and reactor consists in that the absorber is applied to the inside of the reactor wall in the form of a coating.
  • the coating can be applied to the inside of the electromagnetic radiation, for example during the manufacture of the reactor permeable reactor wall are vapor-deposited.
  • the reactor wall is preferably only partially permeable to the electromagnetic radiation.
  • the reactor wall can have a coupling window for the electromagnetic radiation in the radiation-permeable area.
  • the part of the reactor wall that is permeable to the electromagnetic radiation is provided with an anti-reflective coating on the side facing the electrically operated radiation source.
  • the absorber is preferably designed to be flat, in particular it has the shape of a plate.
  • the large surface area in relation to the thickness reduces the heat capacity and thus promotes rapid heating of the absorber.
  • the contour of the flat absorber can be adapted to the conditions of the reactor space.
  • the absorber can also have other, non-flat shapes, provided that these can be integrated into the interior of the reactor.
  • the heat transfer to the flowable substance can be increased in that the absorber consists of an open-pored material through which the flowable substance can flow. For example, porous ceramics in the form of a foam or in a honeycomb structure come into consideration.
  • the open-pore structure increases the surface of the absorber that comes into contact with the flowable substance.
  • the reactor has several inlets and several outlets for the flowable substance.
  • a channel extends between each inlet and each outlet.
  • the channel cross-section can be selected to be so small that, due to the capillary effect, the flowable substance flows into the channels.
  • the plurality of channels together form at least part of the flow path between the at least one inlet and the at least one outlet of the reactor. If several channels form at least part of the flow path between the at least one inlet and the at least one outlet of the reactor, the open-pore material of the absorber can be embedded in the several channels.
  • the heating system has a temperature sensor for regulating the electrically operated radiation source.
  • the temperature sensor can be integrated in the absorber or in the area of the electrically operated radiation source be arranged to detect the thermal radiation of the absorber.
  • Possible temperature sensors are, for example, NTC resistors or temperature sensors that work according to the thermoelectric principle, in particular thermopiles consisting of several thermocouples.
  • each outlet and the absorber is significantly less than the distance between each inlet and the absorber.
  • Each outlet is preferably arranged in the immediate vicinity of the absorber.
  • the distance between each inlet and the absorber and each outlet and the absorber is preferably the same in order to ensure a uniform introduction of heat into the substance.
  • each outlet can thereby be connected directly to one
  • Absorber plate are arranged in which the outlet is arranged in the manner of a chimney in the vertical direction directly above a horizontally arranged absorber surface.
  • Figure 1 shows a first embodiment of a heating system according to the invention with a flow path for the flowable substance
  • Figure 2 shows a second embodiment of a heating system according to the invention with a flow path for the flowable substance with a different arrangement of the absorber
  • FIG. 3 shows a third exemplary embodiment of a heating system according to the invention with a flow path and a different arrangement of the absorber
  • FIG. 4 shows a heating system according to the invention with a flow path for the flowable substance and a control of the heating power
  • FIG. 5 shows a heating system according to the invention with a flow path having a plurality of channels for the flowable substance.
  • FIG. 1 shows a heating system with a reactor (1) with a reactor interior (6), an inlet (2) and an outlet (3).
  • a flowable substance (4) is fed to the reactor interior (6) via the inlet (2) and discharged from the reactor interior (6) via the outlet (3).
  • a reactor wall (5) delimits the interior of the reactor (6).
  • the reactor (1) is designed as a tube with a circular or rectangular cross section.
  • the heating system also has an absorber (7) with an absorber surface (8).
  • the Absorber (7) a component of the reactor wall (5).
  • the part of the absorber surface (8) facing the reactor interior (6) comes into direct contact with the flowable substance (4) on the flow path (9) between inlet and outlet (2, 3).
  • An electrically operated radiation source (10) for generating electromagnetic radiation (11) is arranged outside the reactor (1), the radiation source (10) being arranged below the absorber (7) in such a way that the electromagnetic radiation (11) is directed towards the outside facing absorber surface (8) of the absorber (7) impinges.
  • the absorber (7) has the shape of a plate, the thickness of the plate corresponding to the thickness of the reactor wall.
  • the absorber (7) consists of silicon and, due to its geometry and material, has a low thermal capacity C th . The thermal resistance of the absorber (7) to the reactor wall and the environment is high.
  • the incident electromagnetic radiation (11) therefore heats the absorber (7) to temperatures well above 100 degrees Celsius in a short time.
  • the absorber (7) transfers the thermal energy convectively to the flowing substance (4) by means of the absorber surface (8) facing the reactor interior (6).
  • the radiation source (10) shown emits electromagnetic radiation in the visible spectrum and is designed as a light source.
  • the substance (4) is, for example, a liquid which is heated during the flow between the inlet and outlet (2, 3) along the flow path (9) and is discharged via the outlet (3).
  • Figure 2 shows a second embodiment of a heating system with a flow path (9) between inlet and outlet (2, 3). Insofar as the heating system has matching components, these are labeled with matching reference numerals as in the exemplary embodiment according to FIG.
  • the reactor (1) of the heating system according to FIG. 2 has a reactor wall (5) which is partially permeable to the electromagnetic radiation (12).
  • the radiation-permeable part of the reactor wall is formed by a light-permeable coupling window (12) which is let into the reactor wall (5).
  • the coupling window (12) lies in the beam path (13) of the electromagnetic radiation (11) of the radiation source (10), which is in the
  • the embodiment according to FIG. 2 additionally has optics (14) which bundle the electromagnetic radiation.
  • the coupling window (12) is provided with an anti-reflective coating (15) which reduces the reflection losses and thus increases the radiation efficiency onto the absorber (7).
  • the absorber is not part of the reactor wall (5), but is arranged in the reactor interior (6) at a distance from the reactor wall (5).
  • FIG. 2 shows a further embodiment of the heating system according to the invention with a flow path (9) for the flowable substance (4).
  • the absorber (7) is applied to the inside of the reactor wall (5) in the form of a coating.
  • the reactor wall (5) is formed in the part of the coating by the coupling window (12) for the electromagnetic radiation (11).
  • the radiation source (10) with optics (14) corresponds to that of the exemplary embodiment according to FIG.
  • FIG. 4 shows a fourth embodiment of a heating system according to the invention with a flow path (9) between inlet and outlet (2, 3).
  • the reactor (1) is constructed in accordance with the reactor according to FIG. 1, so that reference is made to the description of FIG. 1 in this respect. Differences arise with regard to the radiation source (10), which is designed here as a laser light source (10, 16), the beam path (13) of which strikes the outward-facing absorber surface (8) of the absorber (7).
  • the heating system also has a temperature sensor (17) which is integrated into a control circuit for controlling the laser power of the laser (16).
  • the temperature sensor (17) is designed as a thermopile. It is placed adjacent to the laser light source in order to detect the thermal radiation (19) emanating from the absorber (8). The wavelength in the visible spectrum is suppressed with a filter (18).
  • the control loop allows it for example to keep the heating power in the heating system at a constant level.
  • FIG. 5 shows a fifth embodiment of a heating system according to the invention, which has several channels (20) for the flowable substance.
  • the flowable substance (4) is a liquid that is evaporated in the heating system.
  • the reactor (1) has a total of four inlets (2). Starting from the inlets (2), the channels (20) extend in the direction of an absorber (7) made of, for example, ceramic material and embedded in the reactor wall (5). The channels (20) run in the longitudinal direction of the lower reactor wall (5) designed as a plate. Immediately above the absorber (7) there are several passages (21) which run at right angles to the channels (20) and open into the surface of the upper reactor wall (5) in an upper reactor wall also designed as a plate. The mouths of the passages (21) are the outlets (3) of the heating system.
  • the channels (20) have, for example, a diameter of 100 pm and the passages (21) have a diameter of 40 pm.
  • the channels (20) and the passages (21) together form the flow path (9).
  • the lower reactor wall (5) is transparent to the electromagnetic radiation below the absorber (7).
  • the electromagnetic radiation is formed by an LED array (22).
  • Heat sinks (23) are arranged on the LED array (22).
  • the heating system according to FIG. 5 is set up in such a way that the liquid substance (4) supplied via the inlets (2) is caused by the transfer of thermal energy by means of the absorber (7) evaporates and the vaporous substance (4) emerges at the outlets (3) via the passages (21) located directly above the absorber (7).
  • the micro-heating system has, for example, a length of 10 to 20 mm and a thickness of 1 to 2.6 mm including the LED array.
  • the exemplary embodiment makes it clear that the heating system according to the invention is particularly suitable for producing micro-heating systems. These micro heating systems have
  • the heating time is extremely short due to the heat transfer mechanism according to the invention.

Landscapes

  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

L'invention concerne un système de chauffage qui permet de fournir de l'énergie thermique à une substance fluide. L'invention vise à permettre de chauffer rapidement une substance fluide, en particulier une substance réactive. À cet effet, un système de chauffage, dans lequel la substance fluide vient en contact direct dans un réacteur exclusivement avec une surface d'absorption, mais pas avec une source de rayonnement à commande électrique, qui est située à l'extérieur du réacteur, est disposé pour générer le rayonnement électromagnétique qui frappe la surface d'absorption.
PCT/EP2021/051209 2020-03-12 2021-01-20 Système de chauffage WO2021180388A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102020106740.2 2020-03-12
DE102020106740.2A DE102020106740A1 (de) 2020-03-12 2020-03-12 Heizsystem

Publications (1)

Publication Number Publication Date
WO2021180388A1 true WO2021180388A1 (fr) 2021-09-16

Family

ID=74418410

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2021/051209 WO2021180388A1 (fr) 2020-03-12 2021-01-20 Système de chauffage

Country Status (2)

Country Link
DE (1) DE102020106740A1 (fr)
WO (1) WO2021180388A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0268924A (ja) * 1988-09-05 1990-03-08 Fuji Electric Co Ltd ウエーハ回転形気相成長装置
EP2767691A1 (fr) * 2011-09-15 2014-08-20 Imagineering, Inc. Dispositif de chauffage
WO2014150213A1 (fr) * 2013-03-15 2014-09-25 Hemlock Semiconductor Corporation Appareil de chauffage à induction
WO2015191656A1 (fr) * 2014-06-11 2015-12-17 Sunedison, Inc. Système de chauffage par induction pour four à lit fluidisé
EP3115698A1 (fr) * 2015-07-09 2017-01-11 E.G.O. ELEKTRO-GERÄTEBAU GmbH Plan de cuisson
WO2017045658A1 (fr) * 2015-09-15 2017-03-23 Rendl Jiří Dispositif pour chauffer de l'eau

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252623A (en) 1979-10-03 1981-02-24 Vaseen Vesper A Ozone production via laser light energy
US5126020A (en) 1988-06-27 1992-06-30 Dames Robert G Detoxification apparatus and method for toxic waste using an energy beam and electrolysis
DE4216499C2 (de) 1992-05-19 1996-03-21 Deutsche Forsch Luft Raumfahrt Verfahren zur Wiederaufbereitung von Abfallschwefelsäure
DE19517039C2 (de) 1994-10-25 2002-07-18 Guenther O Schenck Vorrichtung zur oxidativen Photopurifikation
DE10246626A1 (de) 2002-10-07 2004-04-15 Basf Ag Verfahren zur Herstellung von Halogenalkylaromaten durch Photochlorierung im Mikroreaktor
DE102011106498B4 (de) 2011-06-15 2016-08-04 Heraeus Noblelight Gmbh Bestrahlungsmodul für Mikrophotoreaktoren

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0268924A (ja) * 1988-09-05 1990-03-08 Fuji Electric Co Ltd ウエーハ回転形気相成長装置
EP2767691A1 (fr) * 2011-09-15 2014-08-20 Imagineering, Inc. Dispositif de chauffage
WO2014150213A1 (fr) * 2013-03-15 2014-09-25 Hemlock Semiconductor Corporation Appareil de chauffage à induction
WO2015191656A1 (fr) * 2014-06-11 2015-12-17 Sunedison, Inc. Système de chauffage par induction pour four à lit fluidisé
EP3115698A1 (fr) * 2015-07-09 2017-01-11 E.G.O. ELEKTRO-GERÄTEBAU GmbH Plan de cuisson
WO2017045658A1 (fr) * 2015-09-15 2017-03-23 Rendl Jiří Dispositif pour chauffer de l'eau

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VALSTER A ET AL: "GAINP/ALGAINP VISIBLE-LIGHT EMITTING LASER DIODES GROWN BY METAL ORGANIC VAPOUR PHASE EPITAXY", PHILIPS JOURNAL OF RESEARCH, ELSEVIER, AMSTERDAM, NL, vol. 45, no. 3 / 04, 1 January 1990 (1990-01-01), pages 267 - 277, XP000203360, ISSN: 0165-5817 *

Also Published As

Publication number Publication date
DE102020106740A1 (de) 2021-09-16

Similar Documents

Publication Publication Date Title
EP3331652B1 (fr) Ensemble de rayonnement uv destiné au durcissement sous rayonnement
CH618000A5 (fr)
DE202013012725U1 (de) Leuchte mit LEDs und Zylinderlinse
EP3338301A1 (fr) Module rayonnant et utilisation du module rayonnant
EP3491886A1 (fr) Émetteur surfacique infrarouge et procédé de fabrication de l'émetteur surfacique infrarouge
DE10163087B4 (de) Infrarotstrahler zur thermischen Behandlung von Gütern
DE102010063116A1 (de) Solarstrahlungsempfängervorrichtung
EP3436271B1 (fr) Imprimante avec une unité de séchage à infrarouge
WO2021180388A1 (fr) Système de chauffage
EP3622227A1 (fr) Procédé pour faire fonctionner un récepteur et récepteur pour mettre en uvre le procédé
WO2018205043A1 (fr) Procédé pour faire fonctionner un récepteur et récepteur pour mettre en œuvre le procédé
EP2537175A1 (fr) Dispositif de traitement thermique de substrats
EP3649420B1 (fr) Procédé pour transférer la chaleur contenue dans un gaz et échangeur thermique correspondant
DE2738667A1 (de) Absorber zur aufnahme von strahlungsenergie und deren umwandlung in waermeenergie
DE102009048662B4 (de) Gekühltes Beleuchtungssystem mit oberflächenmontierter Lichtquelle
DE102004034688B4 (de) Luftheiz- und Konvektionsofen mit einem thermoelektrischen Generator und mit Fotovoltaik-Generatoren zur Erzeugung von elektrischer Energie
WO2002023591A1 (fr) Source de rayonnement et dispositif de rayonnement
DE102006022351A1 (de) Vorrichtung zur Raumtemperaturregulierung und Raumbeleuchtung
EP0322627A1 (fr) Appareil pour chauffer un courant de gaz
EP1014454A2 (fr) Générateur thermophotovoltaique
DE102020001449A1 (de) Strahlungsheizung mit integriertem Vorschaltgerät
EP2000003B1 (fr) Unite de rayonnement d'infrarouge
EP3830495B1 (fr) Procédé d'isolation d'une unité de traitement et unité de traitement dotée d'une zone d'isolation
EP4257904A1 (fr) Module infrarouge ou uv refroidi
DE10051903A1 (de) Strahlungsquelle

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21702395

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21702395

Country of ref document: EP

Kind code of ref document: A1