EP0913523A1 - Piste de roulement d'un aéroport thermo-réglable et procédé pour adapter une piste de roulement existante - Google Patents

Piste de roulement d'un aéroport thermo-réglable et procédé pour adapter une piste de roulement existante Download PDF

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Publication number
EP0913523A1
EP0913523A1 EP98119772A EP98119772A EP0913523A1 EP 0913523 A1 EP0913523 A1 EP 0913523A1 EP 98119772 A EP98119772 A EP 98119772A EP 98119772 A EP98119772 A EP 98119772A EP 0913523 A1 EP0913523 A1 EP 0913523A1
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EP
European Patent Office
Prior art keywords
temperature
traffic route
airfield traffic
temperature control
airfield
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP98119772A
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German (de)
English (en)
Inventor
Klaus Dipl.-Ing. Kleiser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FlowTex Technologie GmbH and Co KG
Original Assignee
FlowTex Technologie GmbH and Co KG
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 FlowTex Technologie GmbH and Co KG filed Critical FlowTex Technologie GmbH and Co KG
Publication of EP0913523A1 publication Critical patent/EP0913523A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C11/00—Details of pavings
    • E01C11/24—Methods or arrangements for preventing slipperiness or protecting against influences of the weather
    • E01C11/26—Permanently installed heating or blowing devices ; Mounting thereof

Definitions

  • the invention relates to a temperature control Airfield traffic route and a method for retrofitting a existing airfield traffic route with a temperature control.
  • the airfield traffic route to enable safe air traffic, kept completely free of snow and ice.
  • this is for the safety of the Air traffic is extremely important because, on the one hand if the landscape is snow-covered, the runway is approaching must be clearly visible and secondly the safe one Contact of the wheels on the runway at the high ones Takeoff and landing speeds increased Directional stability granted.
  • the airfield traffic routes are also from other vehicles used that are driven by their wheels and their driving behavior and traction behavior icy or snow-covered airfield traffic routes clearly are deteriorated.
  • the invention has for its object a possibility to propose to ensure the security of an airfield extreme temperatures, including existing ones Airfields should be retrofitted accordingly.
  • This task is accomplished by a temperable Airfield traffic route with the feature of claim 1 and a Procedure for retrofitting an existing one Airfield traffic route with the features of claim 15 solved.
  • the invention is based on the idea of a temperature control element or several temperature control elements below the Arrange road surface of the airfield traffic route and these temperature control elements operationally with one or more To couple power generation units, the Energy generation units thermal energy and / or electrical Generate energy.
  • An existing airfield traffic route can be easily accessed with a Tempering can be retrofitted by at least one Horizontal drilling below the surface of the road Airfield traffic route is executed and in at least one the horizontal bores of one or more temperature control elements to be confiscated.
  • These temperature control elements come with a or several power supply units can be coupled thus specifically changing the temperature of the road surface. Performing a horizontal hole below the Road surface can change during flight operations take place, so that the conversion measure is not expensive Downtimes.
  • this is or they are Temperature control elements with heat transfer devices are flowable through a heat transfer medium.
  • Flow through elongated heat transfer devices with a heat transfer medium can be done with little Achieve a relatively even temperature control because this is not only effective at certain points, but also heat exchange with the surrounding building material of the airfield traffic route of great length and area.
  • This or the temperature control elements can advantageously Be heating coils that have heating wires.
  • the usage of heating wires enables very rapid heating of the Temperature control elements, resulting in a very short response time entire temperature control system.
  • the heating wires therefore come one Additional function that allows you to work with a Heat transfer medium can flow through Heat transfer devices only the usual adapt to occurring weather conditions, which means none additional collateral associated with increased costs with respect to the heat transfer surfaces are provided have to.
  • the temperature control elements are advantageously with a District heating network coupled.
  • the connection to a district heating network releases the airport operator from the Energy generation unit for thermal energy in the area of To build the airport site.
  • the Power generation units solar collectors or one Solar storage device.
  • the area of airfields are in usually larger areas that are unused, such as e.g. in the area of the meadows, which the start and Surrounding runways, but also on the roofs of the hangars, whose flat roofs take up large areas of solar collectors can.
  • These solar collectors can in particular Interaction with cooling, i.e. to operate a Refrigeration system can be used directly.
  • a Solar storage device offers itself in those Cases in which energy is to be generated during the day at night or in the early evening and morning hours Warming up an airfield traffic route again shall be.
  • the Solar collectors can be rolled over and in the road surface of the Airfield traffic route embedded. Like that for Lighting of an airfield traffic route used Rollable lamps (underfloor lamps) can also Solar panels are used, even by heavy ones Vehicles, even aircraft, can be overrun.
  • Underfloor lamps can also Solar panels are used, even by heavy ones Vehicles, even aircraft, can be overrun.
  • the in the road surface of the Airfield traffic route embedded solar panels offers particularly in the area of parking spaces and taxi ways because, in the area of the runway, care should be taken that the road surface is not disturbing has a reflective effect and also the surface loads in the The area where the aircraft touchdown is very high.
  • the Power generation units a device for generating include electrical energy from wind movement.
  • Wind turbines have the advantage that they are just at times very unfavorable climatic conditions a lot of energy can deliver. This is the case, for example, if a heavy snow storm and very low temperatures make high heating outputs of the temperature control elements necessary, Solar collectors but only a low electrical output can generate. Therefore, the use of wind energy can be a useful addition to other existing ones Represent power generation units.
  • the energy generating device comprises at least one vertical hole in which a through geothermal energy heatable heat transfer medium pumped over, or obtained from the natural thermal water becomes.
  • a through geothermal energy heatable heat transfer medium pumped over, or obtained from the natural thermal water becomes.
  • geothermal energy a very inexpensive alternative to Temperature control of the airfield traffic routes.
  • Preferably is located in the at least one vertical hole tubular or tubular heat exchanger.
  • a tubular heat exchanger can be very easily in the Drill deep hole so that on a very simple and inexpensive way to a heat transfer medium emitted geothermal energy is pumped to the earth's surface and can be used.
  • the desired temperature control of an airfield traffic route also includes the cooling of the road surface, so is preferably between the power generation unit and the Temperature control elements interposed a chiller.
  • This chiller can be any known in the art operate suitable refrigeration process and has only that Task that is controlled by the tempering elements below the Dissipate heat absorbed on the road surface.
  • the temperature-controlled airfield traffic route preferably comprises continue to use climate sensors to record the climate data the power generation unit or units through a regulation are coupled. For example, climate sensors Outside temperature, humidity, wind speed or but also record rainfall and depending on this data the temperature of the airfield traffic route regulate so that one within the given Tolerance lying road surface with a possible low energy consumption can be achieved.
  • the Temperature-controlled airfield traffic route sensors continue below the road surface.
  • These sensors can advantageously temperature sensors for detecting the Soil temperature, or include load sensors, which the load on the temperature control elements or in the Airfield traffic lane taken in road surface Capture solar collectors.
  • load sensors which the load on the temperature control elements or in the Airfield traffic lane taken in road surface Capture solar collectors.
  • one elongated temperature control element in the form of a heating coil takes the temperature of the heat transfer medium (in the case the heating of the airfield traffic route) with the length of the Temperature control element in the flow direction. This leads to locally different heat transfer rates in the Airfield traffic route, which is mathematically difficult to are recorded. Therefore, arranging Temperature sensors below the road surface to the Temperature of the road surface at selected points record and feed to a central control unit can. Depending on the measured temperature of the Road surface can be the heating or cooling capacity of the Temperature control elements can be controlled.
  • Procedure for retrofitting an existing one Airfield traffic route will be at least one Horizontal drilling with a completely course-controlled Drilling device carried out from the surface and the at least one horizontal bore in a serpentine shape executed.
  • This has the advantage that with a single Drill the straight runway with one serpentine under the road surface Temperature control element and the direction of travel of the Taxi-ways with a completely history-driven Drilling device can be followed.
  • a Inspection line with sensors in at least one of the Horizontal holes pulled in This represents a simple and therefore an inexpensive alternative to the individual introduction of sensors under the road surface.
  • Fig. 1 shows a schematic plan view of the substructure an airfield traffic route with a tubular Temperature control element.
  • the temperature control element is in one short distance below the driving surface of the Airfield traffic route, so that the illustrated Slight horizontal section through the airfield traffic route runs under the road surface.
  • the airfield traffic route 10 is in the area shown by Temperature control elements 12a, 12b, each one have an elongated, tubular or tubular shape.
  • the temperature control elements in the illustrated embodiment to flexible hoses that can be flowed through by a heat transfer medium.
  • the temperature control elements 12a, 12b are over a feed line 14 fed and are each at their downstream end in flow communication with a Drain line 16.
  • a single supply line with several temperature control elements 12a, 12b Supply the heat transfer medium.
  • the feed line 14 as drain line 16 also run essentially parallel and to the side of the airfield traffic route 10 and are preferably with insulation to protect you outside the Airfield traffic heat exchange with the prevent or significantly reduce the surrounding soil.
  • the feed line 14 is included Branches 18a, 18b provided through which part of the in the Inlet line 14 promoted heat transfer medium in the Temperature control elements 12a, 12b is branched off.
  • mouth elements 20a, 20b are provided, which the Heat transfer medium after flowing through the Feed temperature control elements 12a, 12b to the discharge line 16.
  • Both the supply line and the discharge line are in the further course of the only shown in sections Airfield traffic route with further, not shown Tempering elements connected, as by the interrupted Lines is indicated.
  • the heat transfer medium which is preferably a liquid with high heat capacity, which in the present Operating conditions not freeze, but also not boiling, in a closed cycle and goes through one Heat exchanger 24 in which it is in heat transfer contact occurs to another heat transfer medium as it is based on 2 will be explained later.
  • Heat exchanger 24 instead of Heat exchanger 24 also a heater within the circuit of the heat transfer medium can be provided on this heated to a desired temperature.
  • a desired temperature an oil or Gas firing, but also electric heating for Application.
  • Heat exchanger 24 instead of Heat exchanger 24 or upstream of this, also one Refrigerating machine (not shown) may be arranged, the returned through the discharge line 16 Heat transfer medium cools, causing it to cool the Airfield traffic route through the temperature control elements 12a, 12b is coming.
  • the temperature control elements 12a, 12b are exemplary in FIG. 1 shown that they are in four runs across Longitudinal extension of the airfield traffic route 10 and the four passes in a loop like this connected to each other that when a individual tempering elements a very large one Heat transfer surface forms. Subsequent moving in of the temperature control elements in an existing one Airfield traffic route will be explained in detail later.
  • the temperature control elements 12a, 12b flowed through in the direction of arrow A are laid such that the distances between the individual passages (a 1 , a 2 ) and a 3 decrease in each case.
  • This measure is appropriate since the temperature in the temperature control element drops in the direction of arrow A as the flow length of the temperature control elements in the direction of arrow A decreases, and the driving temperature gradient that is decisive for heat transfer therefore decreases.
  • This is compensated for by the fact that the distance between the individual passages in the transverse direction to the aerodrome traffic route is reduced with increasing running length in order to achieve as uniform a heat input as possible in the aerodrome traffic route to be tempered.
  • Fig. 2 shows a vertical section through a Airfield site. At least in terms of size To be able to reproduce schematically was on the earth's surface 26 an airfield building with tower 28 is shown schematically. The airfield traffic route 10 and the inlet line 14 and discharge line 16 for operating the temperature control elements indicated schematically.
  • Deep bores 32 and extend from a pump house 30 34 in the ground under the airport site.
  • This Deep holes can be, for example, a depth of 300 - Reach 400 m below surface 26. While the Depth bore 32 designed as a pure vertical bore is, the deep bore 34 extends at a small angle to the vertical first to the required depth and then bends into a substantially horizontal extending portion 34a, which is in the desired Depth stops. Then the deep hole 34 is again returned to the earth's surface, where they are also in one Pump house 36 ends.
  • This tubular heat exchanger line 35 can as a simple pipe in the case of the deep hole 34, the ends up on the surface of the earth again, so that the to be heated by geothermal energy Heat transfer medium flows through the pipeline only once and for example at the pump house 30 back to the surface of the earth is promoted back.
  • a double line is used, in which a outer annulus the heat transfer medium to be heated in inserted the hole and then inside Core cross section of the double line is conveyed back.
  • That heated by geothermal energy Heat transfer medium can be used directly to heat the Airfield traffic route can be used by the heated Heat transfer medium flows through the temperature control elements, it However, a heat exchanger can also be interposed to the circuit of the heat transfer medium for heating geothermal energy and the heat transfer medium for Tempering the airfield traffic route from one another separate.
  • Fig. 2 other alternatives are shown that the Generation of energy can serve.
  • the use of Power generation facilities from wind energy always appear then to be a sensible alternative if on the Airfield grounds have large free areas, and that average wind speeds at the times, for which a tempering of the airfield traffic routes is necessary is to allow an adequate energy supply.
  • wind turbines can also be outside of those Operated times when the temperature of the Airfield traffic route is necessary and an amount to cover of the entire energy requirements of the airfield.
  • the solar collectors 40 can be posted anywhere on the airfield and thus the usually available large free Use areas on an airfield site in a meaningful way. It is also conceivable that solar panels on the Roofs of the airport building or a hangar installed be, which is particularly in countries where a Cooling the airfield traffic route is useful at times of maximum solar radiation also a maximum cooling effect can be achieved.
  • the solar panels have a storage device is connected downstream, but can also be obtained during the day Energy is used to support the fact that the lower night temperatures due to increased heating of the airfield traffic route are balanced.
  • FIG. 3 is a schematic section from an airfield traffic route 10 with one in it embedded solar panel shows.
  • the solar collector 40 is by creating a corresponding cut in the Road surface directly and flush with the Road surface used in the airfield traffic route and must be of sufficient stability so that it is also stable Aircraft can be overrun.
  • the solar collector 40 can either with an electrically conductive connection with a Storage unit connected to the electrical generated Stores electricity, but can also as in FIG. 3 illustrated example directly with a temperature control element 12 be connected to that of a heat transfer medium is flowed through, with a small part of the generated Energy for the promotion of the heat transfer medium provided.
  • FIG. 4 shows a top view of an airfield traffic route as shown in Fig. 1.
  • the control unit 44 can be in the immediate vicinity of the heat exchanger 24 to be ordered.
  • the control unit 44 is included Climate sensors 46 provided which are necessary for the operation of the Supply temperature control device necessary climate data. Through the Processing of the data supplied by the climate sensors 46 can both the pump 22 in the control unit Supply line 14 as well as the heating power of the heating wire 42 be managed.
  • the Control unit 44 also connected to sensors 48 and 50, respectively stand below the road surface of the Airfield traffic route 10 are located.
  • the sensors 48 and 50 are preferably connected to a single measuring line and are also drilled below the Road surface pulled in.
  • the Sensors 48 be designed as temperature measuring sensors and Control unit 44 with temperatures close to Supply road surface, creating a direct control the desired road surface temperature is made possible.
  • Additional sensors 50 can, for example, determine the loads measure just below the road surface and thus Detect damage to the airfield traffic route early help.
  • FIG. 5 shows another conceivable alternative to Tempering and simultaneous defrosting of a Airfield traffic route, especially for takeoff and Runways can be used.
  • the across The section shown shows the longitudinal extent of the runway Road surface 50 which, shown exaggerated in FIG. 5, each have a slight downward slope, i.e. in the Representation in Fig. 5 to the left and right Owns the edge of the road.
  • This gradient is used at heavy rain a puddle formation on the Avoid road surface and water as quickly as possible in the surrounding areas 52 of the runway.
  • This You can take advantage of slopes by using the Runway temperature control lines 54 at regular intervals be drilled across the length of the runway run.
  • a large number of branch lines 56 each of which is characterized by extend the runway and on the End road surface in small openings. Through this Openings can occur at a very low outside temperature and thus a heated surface temperature of the runway 10 Leak liquid, which in the direction of arrow B from the Road surface 50 flows out and heated.
  • Alternatively can also be a liquid through the branch lines emerge which is the dew point of road wetness on the Road surface area reduced, resulting in an already Thaw the icy runway or prevent it from icing up leaves.
  • the temperature control line 54 stands for heating the surface Connection with the control unit 44, so that on this additional measure targeted depending on the climate data can be used.
  • Retrofitting an existing airfield with a suitable temperature control system is carried out using a completely progressively controlled drilling process.
  • the horizontal rinsing drilling technique becomes a course-controlled Drill head just below the road surface along the desired course of the temperature control elements and a tempering element or an in the resulting hole Measuring string equipped with sensors retracted.
  • a very big one The length of the drilled holes is only recommended then when electrical heating wires in the temperature control elements apply.
  • In case of flow with one Heat transfer medium should be the length of one Bore should not be more than about 100 meters, because at longer flow lengths with one Heat transfer medium there is a risk that in downstream area of the temperature control element none sufficient amount of heat can be transferred.
  • geothermal energy is to be used, also the necessary deep drilling preferably by means of a completely course-controlled drilling technology, since this is an essentially horizontal section in the desired depth and good heating of the heat transfer medium is possible.
  • Another advantage of creating the deep hole using a perfect course-controlled drilling is that a Can be used on the back hole Earth's surface ends, making it possible for the Heat transfer medium only in one direction of flow to pump through the bore, creating a distinct cheaper line can be used.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
EP98119772A 1997-10-28 1998-10-22 Piste de roulement d'un aéroport thermo-réglable et procédé pour adapter une piste de roulement existante Withdrawn EP0913523A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19747588 1997-10-28
DE1997147588 DE19747588B4 (de) 1997-10-28 1997-10-28 Temperierbarer Flugplatzverkehrsweg und Verfahren zur Nachrüstung eines bestehenden Flugplatzverkehrsweges

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EP0913523A1 true EP0913523A1 (fr) 1999-05-06

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EP98119772A Withdrawn EP0913523A1 (fr) 1997-10-28 1998-10-22 Piste de roulement d'un aéroport thermo-réglable et procédé pour adapter une piste de roulement existante

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DE (1) DE19747588B4 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1577654A1 (fr) * 2004-03-17 2005-09-21 Narita International Airport Corporation Détecteur de verglas, méthode pour l'installer et méthode pour détecter le verglas
DE202006008880U1 (de) * 2006-06-07 2007-10-11 Hering Bau Gmbh & Co. Kg Flächenheizung für Personenverkehrsflächen
WO2008131732A1 (fr) * 2007-04-25 2008-11-06 Wolfgang Feldmann Unité de transfert de chaleur pour le chauffage d'installations et de surfaces et système de chauffage d'aiguillages

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011051422A1 (de) 2011-06-28 2013-01-03 STL Böden+Design GmbH Verfahren für eine ergänzende beheizbare Oberflächenbeschichtung für Verkehrswege und -flächen aus Beton oder Asphalt
DE102012016909B3 (de) * 2012-08-21 2013-10-31 Nestro Lufttechnik Gmbh Vorrichtung zur Erwärmung von oberflächennahen Schichten von Plätzen und Verfahren zu deren Betrieb

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US4305681A (en) * 1978-11-22 1981-12-15 Lennart Backlund Method and apparatus for controlling the temperatures of asphalt bodies and concrete bodies
DE3407927A1 (de) * 1984-03-03 1985-09-05 Hans Prof. Dipl.-Ing. 8200 Rosenheim Krinninger Anordnung zum beheizen und/oder kuehlen einer schicht aus insbesondere bituminoesen baustoffen, deren verwendung sowie verfahren zum herstellen eines beheizbaren und/oder kuehlbaren verkehrsweges
EP0322489A1 (fr) * 1987-12-31 1989-07-05 Kohei Katsuragi Procédé pour faire fondre la neige alimenté par la chaleur interne d'une couche aquifère souterraine sans arrosage
US5081848A (en) * 1990-11-07 1992-01-21 Rawlings John P Ground source air conditioning system comprising a conduit array for de-icing a nearby surface
JPH04194103A (ja) * 1990-11-26 1992-07-14 Fujikura Ltd 風力を利用した蓄熱型路面融雪装置
US5233971A (en) * 1992-07-20 1993-08-10 Hanley Robert M Solar heated driveway apparatus
EP0558845A1 (fr) * 1992-02-28 1993-09-08 Taisei Home Engineering Kabushiki Kaisha Système de fusion de la neige et de la glace et unité de chauffage pour celui-ci
DE4236742A1 (de) * 1992-10-30 1994-05-05 Kabelmetal Electro Gmbh Vorrichtung zum Ermitteln von Druckbelastungen und Verfahren zur Herstellung
EP0792995A1 (fr) * 1996-02-27 1997-09-03 Tracto-Technik Paul Schmidt Spezialmaschinen Procédé de guidage d'un dispositif de forage du sol

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DE3814453A1 (de) * 1988-04-28 1989-11-09 Walter Kroll Verfahren und vorrichtung zur herstellung einer, fuer das befahren einer verkehrsflaeche guenstigen oberflaechentemperatur
DE4036729A1 (de) * 1990-11-17 1992-05-21 Fraunhofer Ges Forschung Einrichtung zur verwendung der erdwaerme
DE4335290C2 (de) * 1993-04-28 1999-03-11 Flowtex Technologie Gmbh & Co Verfahren zur Abdichtung von Bodenkörpern und Vorrichtung zur Durchführung dieses Verfahrens
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4305681A (en) * 1978-11-22 1981-12-15 Lennart Backlund Method and apparatus for controlling the temperatures of asphalt bodies and concrete bodies
DE3407927A1 (de) * 1984-03-03 1985-09-05 Hans Prof. Dipl.-Ing. 8200 Rosenheim Krinninger Anordnung zum beheizen und/oder kuehlen einer schicht aus insbesondere bituminoesen baustoffen, deren verwendung sowie verfahren zum herstellen eines beheizbaren und/oder kuehlbaren verkehrsweges
EP0322489A1 (fr) * 1987-12-31 1989-07-05 Kohei Katsuragi Procédé pour faire fondre la neige alimenté par la chaleur interne d'une couche aquifère souterraine sans arrosage
US5081848A (en) * 1990-11-07 1992-01-21 Rawlings John P Ground source air conditioning system comprising a conduit array for de-icing a nearby surface
JPH04194103A (ja) * 1990-11-26 1992-07-14 Fujikura Ltd 風力を利用した蓄熱型路面融雪装置
EP0558845A1 (fr) * 1992-02-28 1993-09-08 Taisei Home Engineering Kabushiki Kaisha Système de fusion de la neige et de la glace et unité de chauffage pour celui-ci
US5233971A (en) * 1992-07-20 1993-08-10 Hanley Robert M Solar heated driveway apparatus
DE4236742A1 (de) * 1992-10-30 1994-05-05 Kabelmetal Electro Gmbh Vorrichtung zum Ermitteln von Druckbelastungen und Verfahren zur Herstellung
EP0792995A1 (fr) * 1996-02-27 1997-09-03 Tracto-Technik Paul Schmidt Spezialmaschinen Procédé de guidage d'un dispositif de forage du sol

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PATENT ABSTRACTS OF JAPAN vol. 016, no. 523 (M - 1331) 27 October 1992 (1992-10-27) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1577654A1 (fr) * 2004-03-17 2005-09-21 Narita International Airport Corporation Détecteur de verglas, méthode pour l'installer et méthode pour détecter le verglas
DE202006008880U1 (de) * 2006-06-07 2007-10-11 Hering Bau Gmbh & Co. Kg Flächenheizung für Personenverkehrsflächen
WO2008131732A1 (fr) * 2007-04-25 2008-11-06 Wolfgang Feldmann Unité de transfert de chaleur pour le chauffage d'installations et de surfaces et système de chauffage d'aiguillages

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DE19747588A1 (de) 1999-05-06
DE19747588B4 (de) 2004-05-13

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