DE3217365A1 - Vacuum-insulated solar heat storage tank with supplementary electrical heating - Google Patents

Abstract

In this storage tank, in an outer cylindrical container, the cylinder wall of which is assembled from half-shells, the half-shell (4) facing the sun and the cover (16) of the container being transparent, an inner water container is arranged whose surface has a radiation-absorbing layer and into which an electrical heating element and a heat exchanger lead from the exterior. The inner container (8) is vacuum-insulated with respect to the outer container, and the transparent parts (4,16) of the outer container have, between bracings (5,6,7), indentations (6a) by which the radiation is concentrated onto the inner container (8). <IMAGE>

Description

Ηξγ.ε H i η t ε γ δ 'Kf * · «* ··· -' -" "" 44ο7 Emsdetten, 4.5.6

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Applicant: Hars Hinterding Ing.Münstertsr. 44α7 Emsdetten

Inventor: Hans Hinterding Ing.Mürsterstr. Emsdetten

¹¹ vacuum-insulated, electrically additionally heated Sülar heat accumulator "

Solar lectars are well known. These consist of surfaces or tubes, uelche at the The rear wall is insulated and insulated towards the front by glass or plastic panes.

These tubes or surfaces, which are heated up by the action of the sun, are filled with water. The warmed up Water is pumped into remotely located heat accumulators. Often this happens via Bs-QenströmEr.

321736c

The efficiency of such solar collectors is very low because of permanent radiation losses reduce the energy yield. In addition, these collectors are very expensive because they are stored in specially designed frames using expensive insulating materials and glass covers Need to become. There are very high levels of transport also a big disadvantage uie also the costly laying of the pipes the amortization diminishes.

Another major disadvantage is that these collectors, because of their low water content, are very experience high temperatures and are therefore subject to the steam boiler ordinance. Also is a Cooling down during the night or in the shade can not be avoided.

Due to their large surfaces, these collectors had to be anchored in such a way that they were protected against gusts of wind. When a storm occurred, however, these areas became far away worn and the roofs were damaged.

The invention now proposes a solar collector which overcomes these disadvantages. Ee uird a container filled with water is placed in another cylinder, which vacuurriscliert is. One side of the cylinder is transpsient Glass or synthetic glass, such as Makrulan or Plexiglas, in a second half-sided steel bowl trapped. The sealing surface is also transparent. The water tank receives a second one Container, which is stored as a trough in the heat accumulator. The so arranged cylindrical Container uirti incorporated into the roof membrane, and in such a way that the transparent part faces the sun is. The rear side, which is made of steel, is worked into the roof cladding in such a way that an embedded sheet metal, adjustable in each frame, can be worked into the roof cladding. The transparent container then acts like a skylight.

All connections are stored in such a way that they can be reached at the front of the inner part of the house. A ε j π π r; builds ε r electric heating element is on a tempr. . ν r of rn. 6Π C ring set unc 'c ensures: ■ -. n, arj; j: ^τ - γί:. βιγγρβ Lasser, which over = ι a Gcrrrnströr. r r> nt: j - :, rr _r uird, zu cen Zap * "ELellen launched. JedFr t'onrar sti ah 1 of the heat storage

ORIGINAL

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reached, is captured and passed on to the medium water.

The water tank is jet black and the reflection small amount. The stored second container reduces the water volume and at the same time serves because it lies in a vacuum and in the deep black state represents a shadow, as an energy trap, in which the captured heat ray inevitably transfers its energy to the medium water gives away.

An expansion vessel is built in to counter excess pressure. The expansion tank receives a weight-loaded Stopper that protects the container against the ingress of oxygen.

The invention is to be described in more detail using a schematic representation.

Figure 1 shows the view from above with a

half-shell steel cylinder souie one half-shell transparent disc mounted on a base plate. Both shells put together yield Cylinder.

Figure 2 shows a section through the "vacuum-insulated electrically additionally heated solar heat storage, whereby the üJSrmespeicher placed in the cylinder and covered with a transparent disk or dome.

On a floor console IMr. 1 is a cylindrical one Halbachale IMr.2 shifted. On this cylindrical Half-shell IMr.2 is welded in the lower area with a flat iron IMr.7 with the floor cone IMr.1. Another flat iron # 6 is also available in the same radius with the half-shell IMr.2 welded. In the upper area there is an angle profile [\ ir.5 as a ring in the half-shell IMr. 2 welded. The structure so arranged now receives

a stored container IVr.8. This container IMr.θ has pointed feet IMr. 9 to ring as possible Contact surfaces with the floor console IMr. to get.

The .Bank Nr.8 is equipped with a counterflow No.11 and an internal cylindrical container No.1o, tuelcher on the one hand to displace water and on the other hand it serves as an energy trap. A socket 15 is arranged in the lower area in such a way that that it penetrates the outer cylinder No. 2 and is welded or screwed to it. In this socket 15 there is a fill and drain valve arranged.

In the upper area, the IMr.8 container is given a thin pipe socket no.13. On this pipe socket no.13 an expansion vessel no.13 a is arranged so that that this expansion vessel receives a weight-loaded stopper no.13 b.

After the thus arranged container No. cylindrical structure no.2 is introduced, is a VDrformed transparent disc IMr.4 Ceramic or plastic pot in the clamp-shaped Form Nri3, which on the bowl-shaped cylinders IMr.2 are welded or bracketed, trapped.

Then a transparent disk IMr. 16 placed as a cover on the dome. To ensure perfect sealing against vacuum, the angular permanent table is used as a means of cutting
Applied as a sealant.

The same sealant is also applied to the
Flat iron IMr.6 and IMr.7 applied. In the grooves that connect the ceramic parts with the base plate, the lid and the half-shell cylinder, permanently elastic binding agent is also applied to seal.

Finally, container no.8 is fitted with a thermostatically controlled immersion heater IMr in socket no.15. 12. After the container arranged in this way has been introduced into the roof cladding, this is for the sake of simplicity
Depending on the roof pitch, a rectangular sheet metal No. 17, which is mounted on the base plate No. 1
is to lead to the respective roof pitch
thus enable perfect covering.

The container is filled with water through the socket 15 until water comes out of the
Expansion vessel no.13 a emerges. After that, will
A vacuum is created in the cylinder no.2 through the sleeve no.14, the lid no.16 being sucked against the angle iron, and the plastic mass in
E; ^p ::: ir ^:, -. ^ n Lu ^f t at the contact points "εγ-

BATH ORIGINAL

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The LüinkGleisen IMr. 5 and the flat iron nos. G and . \ - r.7 prevent sagging at the same time, Dike created by Ua.kuum. The glass, slightly curved inwards by the vacuum, or the plastic act like a lens. So that the Lid IMr. 16 not sagging are also supports IMr. 18 incorporated.

The electric thermostat now ensures a minimum temperature. However, as soon as the sunbeam hits any point of the black container, This is fully absorbed and after reaching a at a certain temperature, the thermostat is deactivated set or it only heats a small amount Temperature difference.

Against exceeding a certain temperature, the container can also with the help of a thermal Drainage safety device Θγ.15 a via the countercurrent • cooled uerden ..

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Claims (9)

Claims Vacuum-insulated solar heat storage with additional electrical heating, in which in an external cylindrical container, the cylinder wall of which is composed of half-shells, the Sun-facing shell and the lid of the container are translucent, an inner water container is arranged, the surface of which has a radiation-absorbing layer and in the 'outside an electric heating rod and lead a heat exchanger, characterized in that that the inner container (B) against the outer Container is vacuum insulated and translucent Parts? (Ό, (16) of the outer container between struts (5,6,7) have indentations (6a), through which the steel tightly on the inner Container (8) is bundled. 2. Vacuum-insulated solar heat storage device according to claim 1, characterized in that the transparent parts (k, 16) of the outer container are plastically deformable. - 1o - 3. Vacuum-insulated solar heat storage device according to claim 1 or 2, characterized in that that the outer container is connected to a vacuum pump via a vacuum nozzle (1 ^), which maintains a sufficient vacuum between the inner and outer containers. k. Vacuum-insulated solar heat storage device according to claim 1, characterized in that a second container (10), the surface of which has a radiation-absorbing layer, is embedded in the inner container (8) for displacement of water. 5. Vacuum-insulated solar heat storage device according to claim 1, characterized in that the electric heating rod (12) can be regulated via a thermostat. 6. VakuumisDlierter solar - heat storage device according to claim 1, characterized in that the Heat exchanger (11) has a thermal discharge safety device (15a). 7. Vacuum-insulated solar heat storage device according to Claimix, characterized in that the inner tank (O) with ρ inpm expansion vessel (13a) is connected. * ■ ♦ η 8. Vacuum-insulated solar heat store according to claim 7 characterized in that the expansion vessel 113..j a weight E-loaded to protect against overpressure in the system Has plug (13b). 9. Vacuum-insulated solar heat storage device according to claim 1, characterized in that on the bottom (1) of the outer container to adapt to any sloping roof Plate (17) is pivotably arranged.