WO2008034922A1

WO2008034922A1 - Panels for capturing solar energy which are intended to be incorporated as roofing and skylights in buildings with an improvement in the collection of water and solar energy

Info

Publication number: WO2008034922A1
Application number: PCT/ES2007/000226
Authority: WO
Inventors: Emilio Arroyo Mansera
Original assignee: Emilio Arroyo Mansera
Priority date: 2006-09-21
Filing date: 2007-04-13
Publication date: 2008-03-27

Abstract

Panels for capturing solar energy which are intended to be incorporated as roofing and skylights in buildings with an improvement in the collection of water and solar energy, use being made of undulating metal (steel) or else plastic panels which perform a decorative and ornamental function, as a substitution for the usual roofing and tiles in buildings, as well as a clear practical function as elements for capturing solar energy for its conversion and for the improved collection of rainwater so that it can be reused, the transparent plastic panels additionally providing the inside of the structure with additional brightness as a substitution for skylights.

Description

"Solar energy collection panels for incorporation as roofs and skylights in buildings with aaua and solar energy collection melora"

The present invention lies in the use of solar energy collection panels for incorporation as roofs and skylights in buildings with improved collection of water and solar energy.

These solar collection panels are integrated as a basic building element in buildings, whether for private use as single-family or collective dwellings, industrial buildings, public buildings or any construction that requires a roof covering

At present, there are solar collection panels in the market, but they are an addition to the basic construction elements. However, the panels described herein may substitute any roof system or other roofing element from the design phase of the construction, forming the roof necessary in any construction alone, or also directly replace the panels. already installed that have the measurements of the plates described here.

Likewise, the panels that exist today in the market, are manufactured with an expensive technology, unlike what happens with the present invention.

One of the advantages of the panels proposed here and their industrial application, is that their manufacture is carried out from relatively cheap and easy to acquire materials; using expensive machinery and well-defined tools and already developed and through simple manufacturing processes, get a product with high manufacturing quality and low price. The low price objective is pursued until the end. For this, tools are invested in order to manufacture the panel through a fast and reliable process.

Being important key the union of the solar panels to obtain the necessary sealing, the sealing will be carried out by welding. Said welding will be carried out by means of a robot with which greater precision will be achieved, avoiding errors and therefore avoiding leaks of the liquid during the test phases and throughout the useful life of the material. Process times will also be reduced by applying automated welding.

State of the solar collection technology.

The inventor knows no panel similar to the one now described.

The synthesis of this invention is summarized in general terms as follows; The sun's rays are used for heat generation; using the appropriate means, the heat absorbed by a surface exposed to said rays can be used to generate part of the energy that any habitable building needs to heat the drinking water and other uses. The invention consists in the design and manufacture of solar collection panels for incorporation as a building element in buildings.

Advantages By way of example and not limitation, the advantages provided by the present invention are essentially and merely by way of example and not limitation the following;

- Easy manufacturing.

- Simplicity and efficiency of use. - High energy quality and inexhaustible human scale.

- Null ecological impact. It is the great advantage of the system: an energy source free of contaminant waste or gases. This Invention will be a benefit to enhance the use of alternative energies.

- Reduced maintenance.

- They efficiently collect fallen rainwater making the system doubly ecological.

Ultimately, the incorporation of solar panels as construction elements (roofs and skylights in buildings) has as its ultimate purpose the collection and application of solar radiation in buildings for thermal uses. The most important use will be to obtain domestic hot water. The thermal effect produced by solar energy is collected by high quality metal corrugated panels or opaque or transparent plastic panels, transferring that heat to the fluids that will circulate inside it in a closed circuit.

In the attached design sheet a scheme of the invention is attached to allow its better understanding, this scheme being a realization and non-limiting example of the invention according to the following figures;

Figure 1 ; Schematic view of the solar action on the panels.

Figure 2; Plan view and a section of the lower panel.

Figure 3; Plan view and a section of the upper panel.

Figure 4; Examples of coupling between panels and different mounting options _^

According to the previous designs, the object of the present invention consists in the use as a construction element in roofs or skylights of solar capture axis panels and in which the surface of the panel through the sine waves will be oriented along the sun's path at an optimum angle to collect its energy. Daytime solar paths are perfect circle arcs whose axis coincides with that of the earth. In this way, at every moment the greater surface of the corrugated panel with respect to the flat panel and the angles formed with respect to the sun make the energy efficiency superior in this type of panel with respect to the flat panels. During the first hours of the morning (P), the "right side waves of the panel" will pick up the solar rays (R) until they arrive at noon (M) where the panel captures more solar energy throughout its surface. In the afternoon (T) before the ocqso, the "left side waves of the panel" will pick up the rays before the sun disappears. This route of the sun's rays from the ortho to the sunset and its incidence on the honeycombs is shown in the graph described in Figure 1.

In addition to the technical advantages in terms of energy efficiency of the corrugated panel object of the present invention, it is important to note that there are constructive and industrial advantages. The existing flat panels are made up of complex sets of vitreous plates, coils, insulating layers and other elements that make the panel of a very high price and moderate performance.

At the same time, the corrugated panel presents the advantage or characteristic with respect to the existing solar collection panels, consisting of its ability to channel the rainwater collected in a more efficient way due to the wave design itself, in order to to be able to collect the water from the roof and be able to reuse it by means of adequate systems in the desired facilities.

The key to this invention is the use, as a construction element in skylights or roofs of high quality metallic corrugated panels or opaque or transparent plastic panels. The most important quality of these panels is their willingness to be used as constructive elements, that is, when planning the roof of the building where they will be used, these panels will be the elements that will directly replace the tiles or any type of plate used for the completion of the building.

Therefore, it is about obtaining panels with aesthetics and exact dimensions to the standard design sold by companies dedicated to the supply of construction. Pursuing replacing corrugated fiber cement plates in new constructions or in those already installed on roofs, by the proposals in this invention with water circulation system.

You can install as many plates as necessary to cover the required surface in the building where you perform the work execution. Thus, there are different plate configurations to be able to adapt them according to the required assembly. Í See figure 4)

The panels are manufactured according to design and standard and identical measures, to those marketed by some companies that are dedicated to building materials and building roofs For the manufacture of the panels two types of technologies may be used; manufacture of panels from metal panels, or transparent or opaque panels.

• In a preferred embodiment of the invention, solar panels of metallic type are incorporated as construction elements; Each solar collection element, (l) consists of a set of two metal panels (2 and 3), with a corrugated shape according to standard design, joined and sealed with each other by means of a welding cord to guarantee the tightness of the inner liquid. They are mechanized and assembled with the necessary elements to be able to circulate the internal fluid from one element to another and successively to the control center, and from there return the fluid back to the plates that form the roof of the building, always in closed circuit.

Embuticiones are machined (5) that will serve as separation between plates. Likewise, a series of drills (6) are carried out that will be used to couple elements that will be used to connect the panels to each other (4), and install the water pipe connections (7) depending on the type of installation.

The external design of the panel can be carried out with embossments or deformations every certain distance, so that once the panels are installed on the roof, the appearance can be similar to that of a roof with standard tiles.

The final finish is done with paint resistant to external aggressions on the external view face.

The inner part is covered with polyurethane for better insulation and to improve the thermal efficiency of the whole.

In an alternative embodiment of the object of the present invention, plastic solar panels constructed from polymers are incorporated. Transparent or opaque corrugated plates with the same dimensions and shape are designed.

Depending on several factors, reflected below, the most appropriate technology will be used:

o Efficiency studies. o Places where the panels will be installed, o Regulations of each country, o Manufacturing costs, or Final costs of the product. Similarly, panels molded from opaque or transparent plastic may be used as roofing elements to let sunlight pass as a skylight device, to bring natural light to places where it would not arrive during the day if there is no artificial lighting and at the same time take advantage of the other advantages already mentioned of this panel.

In the final installation, the plates are joined to each other and successively. The fluid heated by the sun will leave the panel to a central that manages the entry and exit of said fluid from and to the panels. The control center is responsible for regulating the use of the energy that carries the fluid brought from the plates and from there returns the fluid back to the plates that form the roof of the building to start the cycle again.

The thermal energy from the sun's rays reaches the collectors (1), heating the fluid that circulates inside. This energy in the form of hot water is exchanged to another circuit where it is stored in a storage tank until it can be used, such as sanitary hot water and other uses such as heating the water in the pool or even cooling the building environment with the appropriate systems.

As a further improvement, the water re-directional system may operate under the characteristic called thermosiphon, thus avoiding the use of recirection pumps in some installations. The thermosiphon effect causes that when the fluid of the corrugated panel is heated by the effect of the Sun, given the difference in density of the cold zone (lower zone of the panel) with respect to the hot zone (upper zone), a natural circulation of the fluid occurs through the interior of the installation to the accumulator, returning through the return tubes to the panels to start the cycle again. This process is repeated permanently while the solar energy affects the corrugated panels and there is a certain temperature in the exchange fluid of the solar panel.

Claims

1 - Solar collection panels for incorporation as roofs and skylights in buildings with improved water and solar energy collection characterized by consisting of metal panels consisting of a set of two corrugated metal panels according to standard design, sealed together, machined and assembled with the necessary elements to be able to circulate the internal fluid from one element to another and successively to the control center, and from there return the fluid back to the plates that form the roof of the building, always in closed circuit .

2 - Solar collection panels for incorporation as roofs and skylights in buildings with improved collection of water and solar energy according to the first claim characterized in that the corrugated surface of the panels is provided with separation inlays between plates and connection holes of fluid pipes

3.- Solar collection panels for incorporation as roofs and skylights in buildings with improved water and solar energy collection according to the previous claims characterized in that the external design of the panel is carried out by drawing or deformation every certain distance, giving a finish similar to that of a roof with tiles once the panels are installed on the roof.

A - Solar collection panels for incorporation as roofs and skylights in buildings with improved collection of water and solar energy, characterized by consisting of transparent or opaque corrugated plastic plates with the same dimensions.

5.- Solar collection panels for incorporation as roofs and skylights in buildings with improved water and solar energy collection according to claim 4, characterized in that the plastic panels can also be used as means to let the light pass (skylights).

6.- Solar collection panels for incorporation as roofs and skylights in buildings with improved water and solar energy collection according to the previous claims characterized in that the panels will be provided with means for the circulation of fluids, as well as connections for pipes located inside.

7.- Solar collection panels for incorporation as roofs and skylights in buildings with improved water and solar energy collection according to the previous claims characterized in that the final finish is made with paint resistant to external aggressions on the external view face and the inner part is covered with polyurethane.

8.- Solar collection panels for incorporation as roofs and skylights in buildings with improved water and solar energy collection characterized in that the fluid recirculation system inside the panels operates by thermosiphon; Difference in densities between the cold zone (not exposed to the sun's rays) and the hot zone (exposed to the sun's rays) generating a return of the fluid that is maintained while the sun's rays strike and there is a certain temperature in the exchange fluid.