DE202009002910U1 - Klimadecke - Google Patents

Abstract

A climatic ceiling (1) comprising a conduit (2) through which a heat transfer medium flows, a latent heat storage device (3) and a heat exchange element (4) having a heat exchange surface (40) for exchanging thermal energy with the environment, the conduit (2) being the latent heat storage device (3) and the heat exchange element (4) are coupled to the thermal interaction, characterized in that the conduit (2) extends at least in sections within the heat exchange element (4).

Description

The The invention relates to a climatic ceiling comprising one of a heat transfer medium flowable line, a latent heat storage device and a heat exchange element having a heat exchange surface to exchange heat energy with the environment, wherein the wire, the latent heat storage device and the Heat exchange element coupled to the thermal interaction are.

A generic Klimadecke is for example from the document EP 1 371 915 B1 known. There, latent heat storage in bag form are placed on a commercial ceiling element, which consists of support rails in which fluid-flow pipelines run, which are in thermal contact with the ceiling element in contact. The latent heat storage contain a phase change material, PCM (phase changing material).

adversely At this state of the art is that the principle of a direct connection between line and applied latent heat storage underlying. Thus, the latent heat storage is immediate arranged adjacent to the line. This is created by hanging up the PCM-filled bag after one or more heating / cooling cycles the maximum system-dependent heat exchange between the latent heat storage and the pipelines, in which the PCM in the bags melts or solidifies again and himself thus clings to the pipes by its own weight. The Result is an uncertain heat transfer with eventual Air traps between pipe and bag as well as between Bag and PCM. Whether ultimately the bags actually evenly touch the pipes and thus there is an optimal heat transfer can in a closed ceiling system only subsequently or only be controlled poorly. In addition, at the Assembly of the system first substructures and pipes mounted have been before the PCM-filled bags above the cables can be laid. This is a complicated one and time-consuming process and is more likely difficult. Furthermore, it is disadvantageous in the prior art that the PCM is used in its pure form.

by virtue of their very low self-heat conductivity is a uniform melting of the PCM and thus the full utilization of the heat capacity is not guaranteed. In addition, PCM in the molten state have a lower Thermal conductivity as in the solid state. Thereby affects the PCM that is closest to the room in the already molten state as an insulator and increased thus the melting time of the locally further away PCM. Thus, the underlying principle of the heat conduction is restricted by a direct connection.

Of the Invention is based on the object, a more energy-efficient Klimadecke to provide improved thermal response.

Around to solve the problem underlying the invention, disclosed the invention a Klimadecke comprising one of a heat transfer medium flowable line, a latent heat storage device and a heat exchange element having a heat exchange surface to exchange heat energy with the environment, wherein the line, the latent heat storage device and the heat exchange element coupled to the thermal interaction, wherein the conduit at least in sections within the heat exchange element runs. This allows the latent heat storage device and the heat exchange element coupled flat be and represent a two-dimensional network. The heat exchange element is stationary with a room to be tempered over the heat exchange surface in thermal interaction. On the one hand, the heat exchange element is during of the day as a heat conductor between space and the latent heat storage device available. In this case, the latent heat storage device via the heat energy contained in the room, for example, due to solar radiation melted and loaded with heat. on the other hand can the heat exchange element as a link between the latent heat storage device and the line for the nocturnal surface discharge of the latent heat storage device be used. Thus, the inventive Klimadecke the advantage of using the increased heat capacity. By loading the elements with heat, the room temperature peaks moved into the evening or even cut. A pleasant Room temperature sensation is the result. In the evening or at night is then through the use of an external air conditioning unit, to which the line is to be connected, during the day stored energy in the latent heat storage device discharged again, so that the full storage capacity the next day is available again.

By the nocturnal use of the air conditioner arises an economic advantage in using the cheap Night current.

preferred Embodiments are claimed in the subclaims.

It may prove advantageous if the heat exchange element directly contacts the latent heat storage device. The heat exchange element can distribute the heat energy and smoothly and extensively introduce into the latent heat storage device. Thereby, a particularly uniform melting and solidification of the phase change material in the latent heat storage device can be achieved, and the thermal response of the air-conditioning ceiling is further improved.

It may prove helpful if the heat exchange element and the latent heat storage device material fit and / or are positively connected. Thus, at any time a good contact and thus a good heat transfer between the heat exchange element and the latent heat storage device guaranteed. A cohesive connection is achieved for example by adhesive. To form a positive To create connection, the heat exchange element and the latent heat storage device preferably of one encompassing the edge, z. B. U-shaped profile frame surrounded, in addition, the contact pressure between the heat exchange element and increase the latent heat storage device can. This creates a compact sandwich composite, the the handling of the air conditioning ceiling during transport and the assembly further facilitated. An encircling frame Klimadecke is excellent as so-called ceiling can be used, which not close to the surrounding walls of a room.

It may prove useful when the heat exchange element and the latent heat storage device via a Adhesive are linked to the additives to increase contains the thermal conductivity. So can also over the adhesive a very good heat conduction as well as a very good heat distribution achieved be to a uniform melting and thus full utilization of the phase change material to ensure. This will cause the thermal response the climatic ceiling even further improved. Particularly suitable additives to increase the thermal conductivity Metal powder, in particular aluminum powder, or graphite-containing adhesive.

It may prove advantageous when the heat exchange element and / or the latent heat storage device substantially is plate-shaped / are. By doing so leaves the climate ceiling according to the invention with very realize low height and easily stack what the storage and transport of Klimadecke favors. Incidentally, the Klimadecke invention can be in this version also good in rooms with low Insert room height. Preference is given to rectangular or square plates that are easy to use in a large area Ceiling system are connectable.

It may be advantageous if the heat exchange element and the latent heat storage device substantially parallel are arranged to each other. This allows the climatic ceiling realize with a very low height. Furthermore finds an outstanding one over the parallel elements Heat exchange instead. So, in this embodiment the advantage can be achieved that the heat exchange element and the latent heat storage device a large Have contact surface, on the large Heat quantities are transferable.

It may also prove useful if the line over the heat exchange element a quarter of the cable circumference, preferably over the half line circumference, preferably over more than half Cable circumference, contacted. In the field of heat transfer a distinction is made between the mechanisms of conduction, convection and radiation. As a rule, large amounts of heat are transferable, when two elements contact each other directly (conduction). The heat transfer coefficient is u. a. depending on the contact surface of the two Elements. In general, the amount of heat transferable increases with the contact surface. In a circular Cable cross-section consists of a flat contact surface only a linear contact. The heat transfer coefficient However, it is much larger when the line the heat exchange element over a flat Part of the line circumference contacted. This can cause the heat energy better transfer the line to the heat exchange element be, and over the heat exchange element over a large area to either the environment or the latent heat storage device be delivered.

It may be useful when piping into the heat exchange element is embedded. In such a case, the line is usually completely from surrounded by the heat exchange element, so by way of conduction large amounts of heat between the pipe and the Heat exchange element are transferable while Energy losses are minimized.

It may prove advantageous if the conduit is spaced from the latent heat storage device. Thus, the heat transfer takes place via Konduktion of the line to the heat exchange element and from there flat on or in the latent heat storage device. Compared to conventional solutions, the phase change material is detected areally and thus more evenly and faster melted or solidified. In the conventional solution, this occurs only locally or punctiform in the area where there is contact between the line and the latent heat storage device. It can be assumed that the time for the melting or solidification in the herkömmli solution is significantly longer.

Of Furthermore, it may be advantageous if the line looped, laid helically or meandering is.

It may come in handy when the heat exchange element essentially of stone, preferably of stone, preferably made of plaster. A made of this material heat exchange element fits perfectly into a building, whose walls are made of concrete, for example. The stone is easily malleable and can easily fit in the intended Be brought form. Here gypsum proves to be particularly advantageous because the material is readily available, inexpensive can be provided and easily under embedding the line converted into the intended form can be. In a particularly preferred embodiment the heat exchange element is designed as a plasterboard. A plasterboard is available at low cost and relatively stable.

It may prove practical if the heat exchange element Additives to increase the thermal conductivity contains. Particularly suitable as additive is graphite, This is excellent in the materials for the production of the heat exchange element to be meddled.

in principle the heat exchange element should have a thermal conductivity greater than 0.2 W / mK, preferably in the range between 0.2 W / mK and 0.5 W / mK. The material of the heat exchange element can be organic, inorganic and / or mineral. For example can a plasterboard with graphite content between 5 and 25% by weight, preferably between 15 and 20% by weight, as a heat exchange element be used. The plasterboard shows no graphite content a thermal conductivity in the range of 0.25 W / mK. With a Graphite part between 5 and 25% by weight results in a thermal conductivity of the plasterboard in the range of 0.52 W / mK. Optionally, this one Weight fraction can be replaced by metal fiber and / or powder.

It may prove to be beneficial when the latent heat storage device contains a graphite matrix infiltrated with phase change materials. The Graphite matrix, for example, the holey graphite plates includes, has excellent inherent thermal conductivity and takes on the task of even heat distribution was within the phase change material, so that no Insulating effect by an already melted phase change material arises.

It may be beneficial when the latent heat storage device comprises containers filled with phase change material, wherein at least one container wall, preferably the container walls oxygen diffusion-tight and / or water vapor diffusion-tight are. Such phase change materials are preferably in particular Paraffins or salts or salt hydrates that are in the temperature range between +/- 0 ° C and + 50 ° C, preferably between + 15 ° C and + 30 ° C, preferably between + 20 ° C and + 22 ° C have a phase transition. The phase change materials subject to property changes by the action of oxygen. In a preferred embodiment this is Phase change material infiltrated in a graphite matrix and then in an oxygen diffusion-tight aluminum foil welded in and brought in plate form. This can be ensured that the phase change material too long term preserves its phase change properties.

It may prove useful when the latent heat storage device is conductively coupled to the line. The word "conductive" means in this context, that the latent heat storage device and the line is at least indirectly in contact, taking action be to the thermal interaction between latent heat storage device and to promote leadership.

Preferably Heat is transferred over a large area over solid material transferred between the latent heat storage device and the line. This will provide a good heat transfer between the line and the latent heat storage device ensures, and the phase change material contained in the latent heat storage device can be even and fast over one large contact area are recorded areally. This allows the time for the melting or solidification the phase change material over the conventional Solution be significantly reduced.

It may be beneficial if the heat exchange element is conductively coupled to the latent heat storage device. The waiting "conductive" in this context means that the latent heat storage device and the heat exchange element are at least indirectly in contact, wherein measures are taken to promote the thermal interaction between the latent heat storage device and the heat exchange element. The heat exchange preferably takes place over a large contact area, with the heat exchange element and the latent heat storage device contacting each other directly. As a result, large amounts of heat are transferable and the time for the melting or solidification of the phase change material can be compared to her conventional solution significantly shortened.

The preferred embodiment and application of the invention in detail below with reference to the accompanying drawings explained.

Brief description of the drawings

1 shows a perspective view of the Klimadecke invention.

2 shows a section II-II through the climatic ceiling 1 ,

Detailed description of the preferred embodiments

The Klimadecke invention 1 includes a conduit 2 , which can be traversed by a heat transfer medium (eg., Water), a latent heat storage device 3 containing individual containers filled with phase change material, and a heat exchange element 4 that has a heat exchange surface 40 to exchange heat energy with the environment. The administration 2 , the latent heat storage device 3 and the heat exchange element 4 are coupled to the thermal interaction, with the proviso to exchange in the shortest possible time possible large amounts of heat with each other. According to the invention, the line runs 2 at least in sections, preferably completely within the heat exchange element 4 , and does not have one of the latent heat storage device 3 facing side of the heat exchange element 4 , as well as on the opposite heat exchange surface 40 , forth. As a result, the latent heat storage device 3 with its side facing the heat exchange element 4 be brought into contact over a large area and form a laminar composite.

The heat exchange element 4 is preferably designed as a plasterboard. In the material of the heat exchange element additives for increasing the thermal conductivity, in particular graphite, mixed and evenly distributed. In one of the latent heat storage device 3 facing side of the heat exchange element 4 a groove is introduced, in which the line is preferably in a form-fitting manner in the heat exchange element 4 can be arranged. Preferably, the groove is looped, meandering or spiraling over the entire surface of the heat exchange element 4 so that the heat exchange element 4 evenly with heat / cold energy from the line 2 can be applied. In an alternative embodiment, the line 2 in the heat exchange element 4 poured in and completely from the material of the heat exchange element 4 enclosed.

The administration 2 is preferably looped, meandering or spiraling in a plane within the heat exchange element 4 , A line input and a line output are connected, for example, to a heating or cooling device or an air conditioning unit, not shown. The administration 2 is preferably charged with a heated or cooled heat transfer medium from the air conditioning unit to communicate with the heat exchange element 4 to enter into thermal interaction.

The administration 2 is designed as an oxygen diffusion-tight plastic tube and has a substantially circular line cross-section. The conduit contacts the heat exchange element 4 in about half the circumference of the pipe, so that a good heat exchange between the line 2 and the heat exchange element 4 is guaranteed.

Preferably, the line runs 2 below one of the latent heat storage device 3 facing surface of the heat exchange element 4 so the line 2 from the latent heat storage device 3 is spaced. The apex of the line thus has no direct contact with the latent heat storage device, but there is a gap between the line 2 and the latent heat storage device 3 , The gap can also be closed by filling the groove with a hardenable mass (eg., Plastic, gypsum, filler, etc.), so that the latent heat storage device 3 facing surface of the heat exchange element 4 is essentially flat.

The latent heat storage device 3 includes individual plate-shaped containers 3 which are filled with a phase change material that has been infiltrated into a graphite matrix and surrounded by an oxygen diffusion-tight aluminum foil as a container wall. Between the individual containers of the latent heat storage device 3 Reinforced strips of plasterboard are provided for stabilization and as a mounting device 6 to serve to the lower construction.

2 shows a section II-II of Klimadecke 1 out 1 , It can be seen how the components of the climate ceiling 1 are coupled to each other for thermal interaction, wherein the plate-shaped container of the latent heat storage device 3 and the plate-shaped heat exchange element 4 over the thermally conductive adhesive 5 are materially connected, are arranged parallel to each other and are in heat-conducting contact over a large area. Furthermore, in 2 to realize that the line 2 from the latent heat storage device 3 is spaced and medium bar over the heat exchange element 4 conductive with the latent heat storage device 3 is coupled.

The latent heat storage device 3 and the heat exchange element 4 are surrounded, for example, by a (U) profile frame (not shown) encompassing the edge, which is the latent heat storage device 3 and the heat exchange element 4 pressed against each other and positively connects to a compact sandwich composite.

The intended use of the Klimadecke invention 1 in the preferred embodiment will be explained below with reference to the accompanying drawings.

The Klimadecke invention 1 is about the mounting device 6 preferably mounted on the ceiling of a room such that the latent heat storage device 3 facing the ceiling and the heat exchange surface 40 facing the room. The Klimadecke invention 1 includes a heat-conducting plane in the form of the heat exchange element 4 into which an oxygen-tight plastic pipe as a conduit 2 is integrated and the back with a latent heat storage device containing a phase change material 3 is material and positively connected. The heat-conducting plane has improved heat-conducting properties due to introduced graphite components and interacts directly with the space to be tempered. On the one hand, the heat-conducting plane acts as a heat conductor during the day between the room and the latent heat storage device 3 to the phase change material used in the latent heat storage device 3 contained, melt, or to load with heat. On the other hand, the heat exchange element forms 4 the link between the latent heat storage device 3 and the line 2 for the night-time planar discharge of the phase change material. The individual containers of the latent heat storage device 3 be back on the heat exchange surface 40 opposite side of the heat exchange element 4 cohesively with the heat-conductive adhesive 5 glued on, so no direct contact with the line 2 consists. By using the heat exchange element 4 creates both a very good heat conduction and a very good heat transverse distribution, the uniform melting and thus the full use of the latent heat storage device 3 guaranteed. In addition, the Klimadecke invention is 1 with a latent heat storage device 3 equipped, wherein the phase change material was infiltrated into a graphite matrix and then in a oxygen-diffusion-tight aluminum foil was plate-shaped.

The graphite matrix assumes the task of uniform heat distribution within the latent heat storage device due to the high thermal conductivity 3 , so that no insulating effect caused by the already melted phase change material.

The Klimadecke invention 1 has the advantage of using the increased heat capacity. By loading the latent heat storage device 3 with heat, the room temperature peaks are postponed or even cut off in the evenings. A pleasant room temperature feeling is the result. In the evenings or at night, the energy stored during the day from the phase change material is dissipated again by using an external air conditioning unit so that the full storage capacity is available again the next day. The nightly use of the air conditioner creates an economic advantage when using the low night-time electricity. Furthermore, the advantage of the Klimadecke invention 1 given that by the use of a heat-conducting plane in the form of the heat exchange element 4 the latent heat storage device 3 flat with the heat exchange element 4 can be connected so that due to the heat-conducting plane, a uniform melting and solidification of the phase change material is the result. Similarly, the use of graphite in the heat exchange element leaves 4 as well as in the latent heat storage device 3 Even a very good heat conduction of the entire composite system arise, so that a very high efficiency can be achieved. An excellent thermal response is the result. In addition, the installation and installation of the Klimadecke invention 1 through the prefabricated, complex component very easy and fast to perform. Subsequent application of bags with latent heat storage material is eliminated.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - EP 1371915 B1 [0002]

Claims (15)

Climate ceiling ( 1 ), comprising a line through which a heat transfer medium can flow ( 2 ), a latent heat storage device ( 3 ) and a heat exchange element ( 4 ) with a heat exchange surface ( 40 ) for exchanging heat energy with the environment, the line ( 2 ), the latent heat storage device ( 3 ) and the heat exchange element ( 4 ) are coupled to the thermal interaction, characterized in that the line ( 2 ) at least in sections within the heat exchange element ( 4 ) runs. Climate ceiling ( 1 ) according to claim 1, characterized in that the heat exchange element ( 4 ) the latent heat storage device ( 3 ) contacted directly. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the heat exchange element ( 4 ) and the latent heat storage device ( 3 ) are cohesively and / or positively connected. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the heat exchange element ( 4 ) and the latent heat storage device ( 3 ) via an adhesive ( 5 ), which contains additives for increasing the thermal conductivity. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the heat exchange element ( 4 ) and / or the latent heat storage device ( 3 ) is substantially plate-shaped / are. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the heat exchange element ( 4 ) and the latent heat storage device ( 3 ) are arranged substantially parallel to each other. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the line ( 2 ) the heat exchange element ( 4 ) over a quarter of the circumference of the line, preferably over half the circumference, preferably over more than half the circumference, contacted. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the line ( 2 ) in the heat exchange element ( 4 ) is embedded. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the line ( 2 ) from the latent heat storage device ( 3 ) is spaced. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the heat exchange element ( 4 ) consists essentially of stone, preferably made of stone, preferably of gypsum. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the heat exchange element ( 4 ) Contains additives to increase the thermal conductivity. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the latent heat storage device ( 3 ) contains a graphite matrix infiltrated with phase change materials. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the latent heat storage device ( 3 ) container filled with phase change materials, wherein the container walls are oxygen-diffusion-tight and / or water vapor diffusion-tight. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the latent heat storage device ( 3 ) conductively with the line ( 2 ) is coupled. Climate ceiling ( 1 ) according to one of the preceding claims, characterized in that the heat exchange element ( 4 ) conductively with the latent heat storage device ( 3 ) is coupled.