CH612749A5 - Method of manufacturing a solar collector hose and collector hose produced according to this method - Google Patents

Method of manufacturing a solar collector hose and collector hose produced according to this method

Info

Publication number
CH612749A5
CH612749A5 CH584677A CH584677A CH612749A5 CH 612749 A5 CH612749 A5 CH 612749A5 CH 584677 A CH584677 A CH 584677A CH 584677 A CH584677 A CH 584677A CH 612749 A5 CH612749 A5 CH 612749A5
Authority
CH
Switzerland
Prior art keywords
tube
pipe
opaque
transparent
plastic material
Prior art date
Application number
CH584677A
Other languages
French (fr)
Inventor
Marc Meisser
Original Assignee
Maillefer Sa
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 Maillefer Sa filed Critical Maillefer Sa
Priority to CH584677A priority Critical patent/CH612749A5/en
Publication of CH612749A5 publication Critical patent/CH612749A5/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/75—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits with enlarged surfaces, e.g. with protrusions or corrugations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/001—Combinations of extrusion moulding with other shaping operations
    • B29C48/0013—Extrusion moulding in several steps, i.e. components merging outside the die
    • B29C48/0015—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die
    • B29C48/0016—Extrusion moulding in several steps, i.e. components merging outside the die producing hollow articles having components brought in contact outside the extrusion die using a plurality of extrusion dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
    • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
    • B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
    • B29C48/21—Articles comprising two or more components, e.g. co-extruded layers the components being layers the layers being joined at their surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/40—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors
    • F24S10/45—Solar heat collectors using working fluids in absorbing elements surrounded by transparent enclosures, e.g. evacuated solar collectors the enclosure being cylindrical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/70—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits
    • F24S10/73—Solar heat collectors using working fluids the working fluids being conveyed through tubular absorbing conduits the tubular conduits being of plastic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/14—Fastening; Joining by using form fitting connection, e.g. with tongue and groove
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The solar collector hose consists of two elements. The inner element (1) made of opaque plastic itself comprises a circular cross-section tube (1a) and radial vanes (1b). The outer element is a tube (2) made of transparent material coaxial with the tube (1a) and held centred by the vanes (1b). The whole of the collector hose can be manufactured continuously by extrusion by using successive extrusion heads. That being so, the tube (2) made of transparent material can be extruded directly on the tube (1). <IMAGE>

Description

  

  
 



   En revanche, pour le tube 2, on choisira de préférence une matière transparente dont la courbe d'absorption spectrale aura des valeurs aussi faibles que possible dans le domaine des radiations visibles et des valeurs élevées dans le domaine des  



  radiations infrarouges afin de créer l'effet de serre qui assure le captage de l'énergie contenue dans le rayonnement solaire.



   Les essais effectés avec un agencement comme celui de la fig. 1 ont montré que l'énergie du rayonnement solaire était captée dans de bonnes conditions. Le tuyau décrit peut être monté sur un support qui sera de préférence en une matière isolante. Chaque alvéole limité par deux ailettes lb constitue une enceinte fermée remplie d'air qui joue un rôle particulier.



  Les alvéoles qui sont orientés de façon à recevoir le rayonnement s'échauffent par effet de serre et transmettent leur chaleur à l'eau qui circule à l'intérieur du tube la. En revanche, les alvéoles qui se trouvent à l'opposé de la zone recevant le rayonnement solaire jouent un rôle de coussin isolant et empêchent la déperdition de chaleur par rayonnement ou conduction vers le support.



   La fig. 2 représente un tuyau qui est exactement du même genre que celui de la fig. 1. Le tube extérieur 3 en matière transparente est ici de section carrée et comporte sur une de ses faces externes deux nervures 3b et sur la face opposée deux rainures   .    L'élément intérieur opaque 4 présente des ailettes radiales 4b dont la largeur est variable afin de former avec le tube 3 les alvéoles décrits ci-dessus. Dans cette variante d'exécution du fait de la structure carrée du tube, il est possible de réaliser un collecteur au moyen d'éléments accollés parallèlement les uns aux autres sans aucune autre structure de support ou d'entourage.

  En outre, toute torsion des tuyaux sur la longueur est évitée de sorte que les alvéoles qui servent de coussins isolants jouent ce rôle sur toute leur longueur, de même que les alvéoles qui servent d'éléments de chauffage par effet de serre.



   La fig. 3 montre une variante dans laquelle les éléments opaques et transparents 5 et 6 forment chacun la moitié de la section d' un tube circulaire. Ces deux éléments sont soudés   l'un    à l'autre le long de deux génératrices diamétralement opposées 7 et 8 lors de la fabrication par extrusion, qui peut se dérouler comme décrite à propos du tuyau de la fig. 1. L'élément opaque 5 est pourvu d'une seule ailette 9 qui s'étend tangentiellement et qui permet de fixer le tuyau sur un support par exemple sur une plaque de bois au moyen de clous.



   Les variantes des fig. 4 et 5 seront de préférence réalisées en des matières plastiques souples permettant de construire des collecteurs solaires en logeant des segments de tuyau roulés en spirale dans une enceinte plate revêtue d'une plaque de verre, comme on le voit aux fig. 6 et 7. Le tuyau de la fig. 4 comporte un élément externe transparent 10 de section circulaire et un élément interne opaque 11 formé d'un tube circulaire lla muni de deux ailettes   1 lob    diamétralement opposées, et soudées à la face interne de l'élément 10. Cette disposition permet de plier le tuyau plus facilement qu'une disposition comme celle des fig. 1 et 2.

  Il en est de même de la variante selon la fig. 5 dans laquelle l'élément opaque 12 et 1' élément transparent 13 ont tous les deux des sections en demi-cercle et sont soudés le long de deux génératrices formant les joints 14 et 15.



   On se rend compte que si   l'on    utilise une enceinte plate formée d'un bac rectangulaire en matière isolante 16 fermé sur sa face supérieure par une plaque de verre 17 et si   l'on    fixe à l'intérieur de ce bac une certaine longueur d'un tuyau 18 réalisé selon l'une des variantes décrites plus haut, en disposant ce tuyau comme le montre la vue en plan de la fig. 7, on peut raccorder une tubulure d'admission 19 et une tubulure d'évacuation 20 aux deux extrémités du tuyau 18 en utilisant des raccords usuels et faire circuler de l'eau sur toute sa longueur.



   Bien entendu, on pourrait aussi, si on le désire, brancher plusieurs segments de tuyaux en parallèle en reliant une des extrémités homologues des divers segments à un collecteur d'entrée et l'autre à un collecteur de sortie.



   Les tuyaux décrits présentent de multiples avantages. Ils peuvent être lovés ou enroulés selon différents parcours et constituer des nappes ayant la forme que   l'on    désire. Ils sont simples à poser, facilement transportables et d'un prix de revient très bas.



   Ils peuvent être utilisés pour la production d'eau chaude, par exemple pour les besoins ménagers, pour le chauffage d'une piscine ou pour la préparation de l'eau de chauffages centraux, de serres, etc. Ils peuvent également servir à constituer des parois isolantes capables de climatiser une enceinte en évitant sa surchauffe sous l'effet du rayonnement solaire.



   Bien entendu, le fluide caloporteur pourrait être, le cas échéant, un autre fluide que l'eau, par exemple l'air. 



  
 



   On the other hand, for tube 2, a transparent material will preferably be chosen whose spectral absorption curve will have values as low as possible in the range of visible radiations and high values in the range of.



  infrared radiations in order to create the greenhouse effect which ensures the capture of the energy contained in the solar radiation.



   The tests carried out with an arrangement like that of FIG. 1 have shown that the energy of solar radiation is captured under good conditions. The pipe described can be mounted on a support which will preferably be of an insulating material. Each cell limited by two fins 1b constitutes a closed chamber filled with air which plays a particular role.



  The cells which are oriented so as to receive the radiation heat up by the greenhouse effect and transmit their heat to the water which circulates inside the tube 1a. On the other hand, the cells which are located opposite the zone receiving solar radiation act as an insulating cushion and prevent the loss of heat by radiation or conduction towards the support.



   Fig. 2 shows a pipe which is exactly of the same type as that of FIG. 1. The outer tube 3 made of transparent material is here of square section and has on one of its outer faces two ribs 3b and on the opposite face two grooves. The opaque inner element 4 has radial fins 4b the width of which is variable in order to form with the tube 3 the cells described above. In this variant embodiment, due to the square structure of the tube, it is possible to produce a collector by means of elements stuck parallel to one another without any other support structure or surround.

  In addition, any twisting of the pipes along the length is avoided so that the cells which serve as insulating cushions play this role over their entire length, as well as the cells which serve as greenhouse heating elements.



   Fig. 3 shows a variant in which the opaque and transparent elements 5 and 6 each form half of the section of a circular tube. These two elements are welded to each other along two diametrically opposed generatrices 7 and 8 during manufacture by extrusion, which can take place as described with regard to the pipe of FIG. 1. The opaque element 5 is provided with a single fin 9 which extends tangentially and which makes it possible to fix the pipe on a support, for example on a wooden plate by means of nails.



   The variants of fig. 4 and 5 will preferably be made of flexible plastics making it possible to construct solar collectors by housing segments of pipe rolled in a spiral in a flat enclosure coated with a glass plate, as seen in FIGS. 6 and 7. The pipe of fig. 4 comprises a transparent external element 10 of circular section and an opaque internal element 11 formed of a circular tube 11a provided with two diametrically opposed fins 1 lob, and welded to the internal face of the element 10. This arrangement allows the pipe more easily than an arrangement like that of fig. 1 and 2.

  The same is true of the variant according to FIG. 5 in which the opaque element 12 and the transparent element 13 both have semi-circular sections and are welded along two generatrices forming the joints 14 and 15.



   We realize that if we use a flat enclosure formed of a rectangular tank of insulating material 16 closed on its upper face by a glass plate 17 and if we fix inside this tank a certain length of a pipe 18 produced according to one of the variants described above, by arranging this pipe as shown in the plan view of FIG. 7, one can connect an inlet pipe 19 and a discharge pipe 20 to the two ends of the pipe 18 using customary fittings and circulate water over its entire length.



   Of course, one could also, if desired, connect several segments of pipes in parallel by connecting one of the corresponding ends of the various segments to an inlet manifold and the other to an outlet manifold.



   The pipes described have multiple advantages. They can be coiled or rolled up according to different routes and constitute sheets having the shape that is desired. They are simple to install, easily transportable and have a very low cost price.



   They can be used for the production of hot water, for example for household needs, for heating a swimming pool or for preparing water for central heaters, greenhouses, etc. They can also be used to form insulating walls capable of air conditioning an enclosure by preventing it from overheating under the effect of solar radiation.



   Of course, the heat transfer fluid could be, where appropriate, a fluid other than water, for example air.

Claims (1)

REVENDICATIONS 1. Procédé de fabrication d'un tuyau capteur d'énergie solaire, caractérisé en ce que, dans une première tête d'extrusion, on forme un premier élément allongé en une première matière plastique, puis on fait passer ce premier élément dans une seconde tête d'extrusion dans laquelle on forme un second élément allongé en une seconde matière plastique, le tout de manière que les dits éléments soient liés l'un à l'autre et que l'ensemble forme au moins un conduit continu susceptible d'être parcouru par un fluide caloporteur, l'une des dites matières étant transparente et l'autre étant opaque. CLAIMS 1. A method of manufacturing a solar energy collector pipe, characterized in that, in a first extrusion head, a first elongate element is formed in a first plastic material, then this first element is passed into a second extrusion head in which a second elongated element is formed in a second plastic material, the whole in such a way that said elements are linked to one another and that the assembly forms at least one continuous duct capable of being traversed by a heat transfer fluid, one of said materials being transparent and the other being opaque. 2. Tuyau capteur d'énergie solaire fabriqué selon le procédé de la revendication 1, caractérisé en ce qu'il présente une section composite faite d'un élément transparent et d'un élément opaque, les deux éléments étant liés l'un à l'autre. 2. Solar energy collector pipe manufactured according to the method of claim 1, characterized in that it has a composite section made of a transparent element and an opaque element, the two elements being linked to one another. 'other. 3. Tuyau capteur selon la revendication 2, caractérisé en ce que l'élément opaque présente la forme d'un tube pourvu d'au moins deux ailettes longitudinales s'étendant sur son côté externe et en ce que l'élément transparent présente la section d'un second tube entourant les ailettes de l'élément opaque. 3. Sensor pipe according to claim 2, characterized in that the opaque element has the shape of a tube provided with at least two longitudinal fins extending on its outer side and in that the transparent element has the section. a second tube surrounding the fins of the opaque element. 4. Tuyau capteur selon l'une des revendications 2 et 3, caractérisé en ce qu'il présente sur sa face externe au moins un élément de fixation venu d'extrusion et permettant l'assujettissement du tuyau à un support. 4. Sensor pipe according to one of claims 2 and 3, characterized in that it has on its outer face at least one fastening element from extrusion and allowing the attachment of the pipe to a support. 5. Tuyau capteur selon l'une des revendications 2 et 3, caractérisé en ce qu'il présente sur sa face externe au moins une paire d'éléments de fixation complémentaires permettant d'accrocher les uns aux autres côte à côte des segments ou des spires successives du tuyau roulé sur lui-même. 5. Sensor pipe according to one of claims 2 and 3, characterized in that it has on its outer face at least one pair of complementary fasteners for hooking to each other side by side segments or successive turns of the pipe rolled on itself. 6. Tuyau capteur selon l'une quelconque des revendications 2 à 5, caractérisé en ce que l'élément en matière plastique transparente est fait d'une matière plastique qui présente un coefficient d'absorption spectral minimum pour les rayonnements lumineux visibles, cette matière présentant en outre un coefficient d'absorption aussi élevé que possible pour les rayonnements infrarouges. 6. Sensor pipe according to any one of claims 2 to 5, characterized in that the transparent plastic element is made of a plastic material which has a minimum spectral absorption coefficient for visible light radiation, this material. furthermore having an absorption coefficient which is as high as possible for infrared radiation. 7. Tuyau capteur selon l'une quelconque des revendications 2 à 6, caractérisé en ce que l'élément opaque est constitué en une matière plastique qui contient une charge de matière absorbante et mate. 7. Sensor pipe according to any one of claims 2 to 6, characterized in that the opaque element is made of a plastic material which contains a load of absorbent and matt material. On connaît déjà des collecteurs solaires qui comportent des tubes de verre à l'intérieur desquels sont logés des éléments allongés ayant une structure telle qu' ils absorbent fortement la lumière solaire, par exemple des éléments en cuivre revêtus d'un vernis noir mat. Dans certains cas, des tuyaux de ce genre sont constitués de deux tubes coaxiaux, dont le tube extérieur est en verre et le tube intérieur en cuivre, la surface du tube intérieur étant partiellement revêtue sur sa face externe d'un revêtement absorbant. Solar collectors are already known which comprise glass tubes inside which are housed elongated elements having a structure such that they strongly absorb sunlight, for example copper elements coated with a matt black varnish. In some cases, such pipes consist of two coaxial tubes, the outer tube of which is made of glass and the inner tube of copper, the surface of the inner tube being partially coated on its outer face with an absorbent coating. On sait que ces éléments sont utilisés de plus en plus pour chauffer ou tempérer de l'eau en vue de satisfaire aux besoins domestiques ou industriels, en évitant de consommer du courant électrique ou du combustible. It is known that these elements are used more and more to heat or temper water with a view to meeting domestic or industrial needs, while avoiding the consumption of electric current or fuel. Le but de la présente invention est de proposer un procédé et un tuyau qui permettent de réduire considérablement, aussi bien les frais de matière première que les frais de fabrication et le montage de ces collecteurs solaires connus. The aim of the present invention is to provide a method and a pipe which make it possible to considerably reduce both the raw material costs and the costs of manufacturing and assembling these known solar collectors. On s'est aperçu en effet qu'il était possible de produire sans difficulté par voie d'extrusion, d'une part, des matières plastiques transparentes dont la courbe d'absorption spectrale est telle que des écrans faits de ces matières sont aptes à créer l'effet de serre et d'autre part, des matières plastiques opaques présentant de bonnes qualités d'absorption de la lumière pour toutes les longueurs d'ondes du spectre visible et infrarouge. It was found in fact that it was possible to produce without difficulty by extrusion, on the one hand, transparent plastics whose spectral absorption curve is such that screens made of these materials are suitable for to create the greenhouse effect and on the other hand, opaque plastics having good light absorption qualities for all wavelengths of the visible and infrared spectrum. Pour atteindre le but mentionné plus haut, la présente invention a pour premier objet un procédé de fabrication d'un tuyau capteur d'énergie solaire, caractérisé en ce que, dans une première tête d'extrusion, on forme un premier élément allongé en une première matière plastique puis on fait passer ce premier élément dans une seconde tête d'extrusion dans laquelle on forme un second élément allongé en une seconde matière plastique, le tout de manière que les dits éléments soient liés l'un à l'autre et que l'ensemble forme au moins un conduit continu susceptible d'être parcouru par un fluide caloporteur, l'une des dites matières étant transparente et l'autre étant opaque. To achieve the object mentioned above, the first object of the present invention is a method of manufacturing a solar energy collector pipe, characterized in that, in a first extrusion head, a first elongate element is formed into a first plastic material then this first element is passed through a second extrusion head in which a second elongated element is formed in a second plastic material, all in such a way that said elements are linked to one another and that the assembly forms at least one continuous duct capable of being traversed by a heat transfer fluid, one of said materials being transparent and the other being opaque. Un tuyau capteur d'énergie solaire obtenu par le procédé selon l'invention est caractérisé en ce qu'il présente une section composite faite d'un élément transparent et d'un élément opaque, les deux éléments étant liés l'un à l'autre. A solar energy collector pipe obtained by the method according to the invention is characterized in that it has a composite section made of a transparent element and an opaque element, the two elements being linked to one another. other. On va décrire ci-après, à titre d'exemple, quelques variantes du tuyau capteur selon l'invention ainsi qu'un mode d'utilisation de ce tuyau pour créer un collecteur solaire plan. A few variants of the collector pipe according to the invention will be described below, by way of example, as well as a method of using this pipe to create a flat solar collector. La fig. 1 est une vue en coupe d'une première variante du tuyau selon l'invention, la fig. 2 est une vue en coupe montrant trois segments d'un tuyau selon une seconde variante, accrochés les uns aux autres, la fig. 3 est une vue en coupe d'une troisième variante du tuyau selon l'invention, les fig. 4 et 5 sont des vues en coupe montrant deux autres variantes, et les fig. 6 et 7 des vues respectivement en coupe et en plan d'un collecteur solaire plan réalisé au moyen d'un tuyau capteur selon la fig. 3. Fig. 1 is a sectional view of a first variant of the pipe according to the invention, fig. 2 is a sectional view showing three segments of a pipe according to a second variant, attached to each other, fig. 3 is a sectional view of a third variant of the pipe according to the invention, figs. 4 and 5 are sectional views showing two other variants, and figs. 6 and 7 respectively sectional and plan views of a planar solar collector produced by means of a collector pipe according to FIG. 3. Le tuyau représenté à la fig. 1 présente le double avantage de pouvoir être fabriqué par extrusion dans une installation d'extrusion classique à des frais très réduits et de permettre le réchauffement rapide d'une masse d'eau conduite à l'intérieur lorsqu'il est exposé au soleil. n se compose d'un élément intérieur 1 en une matière plastique opaque et d'un élément extérieur 2 en une matière transparente. L'élément 1 comporte un tube circulaire la et des ailettes longitudinales lb qui s'étendent radialement vers l'extérieur par rapport au tube la sur toute la longueur de ce tube. La largeur radiale de chacune des six ailettes lb est la même et correspond au diamètre intérieur du tube circulaire 2 en matière transparente. The pipe shown in fig. 1 has the double advantage of being able to be manufactured by extrusion in a conventional extrusion installation at very low costs and of allowing the rapid heating of a body of water carried inside when it is exposed to the sun. n consists of an inner element 1 in an opaque plastic material and an outer element 2 in a transparent material. Element 1 comprises a circular tube 1a and longitudinal fins 1b which extend radially outwardly relative to tube 1a over the entire length of this tube. The radial width of each of the six fins lb is the same and corresponds to the internal diameter of the circular tube 2 made of transparent material. Ce tube 2 présente dans sa face externe en deux endroits diamétralement opposés, d'une part, une gorge longitudinale 2a et d' autre part, une nervure de mêmes dimensions 2b. On se rend compte que deux segments du tuyau de la fig. 1 peuvent être accrochés côte à côte en engageant la nervure 2b de l'un des tubes dans la rainure 2a de l'autre. This tube 2 has in its outer face in two diametrically opposed locations, on the one hand, a longitudinal groove 2a and on the other hand, a rib of the same dimensions 2b. We realize that two segments of the pipe of fig. 1 can be hung side by side by engaging the rib 2b of one of the tubes in the groove 2a of the other. La fabrication d'un tuyau tel que représenté à la fig. 1 dans une installation d'extrusion ne présente pas de difficultés. Une matière plastique souple ou rigide, comme par exemple du PVC peut être mise en forme dans une tête d'extrusion afin de fabriquer de façon continue le tube à ailettes 1. A la sortie de la tête d'extrusion, ce tube traversera un bac de refroidissement de façon que sa forme soit plus ou moins fixée, puis entrera directement dans une seconde tête d'extrusion raccordée au cylindre d'une seconde extrudeuse qui moulera le tube extérieur 2 autour de,E ailettes lb. L'opération sera conduite de façon que le tube 2 se soude aux extrémités des ailettes lb avant d'être refroidi. Alors que le tube 2 sera constitué d'une matière transparente, le tube 1 sera au contraire entièrement constitué d'une matière opaque. The manufacture of a pipe as shown in FIG. 1 in an extrusion installation does not present any difficulties. A flexible or rigid plastic material, such as for example PVC can be shaped in an extrusion head in order to continuously manufacture the finned tube 1. At the exit of the extrusion head, this tube will pass through a tank. cooling so that its shape is more or less fixed, then will enter directly into a second extrusion head connected to the cylinder of a second extruder which will mold the outer tube 2 around, E fins lb. The operation will be carried out so that the tube 2 is welded to the ends of the fins lb before being cooled. While the tube 2 will be made of a transparent material, the tube 1 will instead be entirely made of an opaque material. Pour cela, on adjoindra à la matière plastique introduite dans la première extrudeuse une charge de pigments noirs ou d'une autre matière donnant à la matière plastique un aspect noir et mat. De préférence, on choisira la charge de coloration de façon qu'elle soit aussi absorbante que possible pour les radiations visibles et infrarouges. For this, a charge of black pigments or of another material will be added to the plastic material introduced into the first extruder, giving the plastic a black and mat appearance. Preferably, the coloring filler will be chosen so that it is as absorbent as possible for visible and infrared radiation.
CH584677A 1977-05-10 1977-05-10 Method of manufacturing a solar collector hose and collector hose produced according to this method CH612749A5 (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482708A1 (en) * 1980-05-13 1981-11-20 Sorelec Solar energy traps made of intersecting multichannel tubes - to eliminate use of superficial glazing
DE3041374A1 (en) * 1980-11-03 1982-05-13 Fa. Manfred Helfrecht, 8598 Waldershof Building roof absorber pipe system - comprises pipes with lengthwise fins integral with extruded profiled rails
DE4407968A1 (en) * 1994-03-10 1995-09-21 Peter Kobler Solar heat collector element and element array
WO2003023292A1 (en) * 2001-09-11 2003-03-20 Manu Ghela Solar collector pipe
US6604521B2 (en) * 2001-09-11 2003-08-12 Travis Smith Solar collector pipe
FR2875292A1 (en) * 2004-09-14 2006-03-17 Herve Pierre Marie Majastre Solar collector for building, has absorber made or thermoplastic or rubber and integrated with thermoplastic pipe by insulating material layer, and metallic sheet and adhesive layer plated on outer wall of building surface by gluing/flange
EP3070414A1 (en) * 2015-03-20 2016-09-21 Universität Stuttgart Solar collector and method for its production

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2482708A1 (en) * 1980-05-13 1981-11-20 Sorelec Solar energy traps made of intersecting multichannel tubes - to eliminate use of superficial glazing
DE3041374A1 (en) * 1980-11-03 1982-05-13 Fa. Manfred Helfrecht, 8598 Waldershof Building roof absorber pipe system - comprises pipes with lengthwise fins integral with extruded profiled rails
DE4407968A1 (en) * 1994-03-10 1995-09-21 Peter Kobler Solar heat collector element and element array
WO2003023292A1 (en) * 2001-09-11 2003-03-20 Manu Ghela Solar collector pipe
US6604521B2 (en) * 2001-09-11 2003-08-12 Travis Smith Solar collector pipe
FR2875292A1 (en) * 2004-09-14 2006-03-17 Herve Pierre Marie Majastre Solar collector for building, has absorber made or thermoplastic or rubber and integrated with thermoplastic pipe by insulating material layer, and metallic sheet and adhesive layer plated on outer wall of building surface by gluing/flange
EP3070414A1 (en) * 2015-03-20 2016-09-21 Universität Stuttgart Solar collector and method for its production

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