EP2526364A2

EP2526364A2 - Partition and method for room climate control

Info

Publication number: EP2526364A2
Application number: EP11701960A
Authority: EP
Inventors: Martin Krus; Andreas Holm; Klaus Sedlbauer
Original assignee: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Current assignee: Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority date: 2010-01-22
Filing date: 2011-01-20
Publication date: 2012-11-28
Also published as: WO2011089175A3; WO2011089175A2; DE102010005453A1

Abstract

The invention relates to a partition (1) having at least one first cover layer (10) and at least one second cover layer (20), wherein the first cover layer and/or the second cover layer comprise an interior (31) containing at least one first phase change material (41) having a first transition temperature, wherein the first cover layer and the second cover layer are disposed at a distance from each other, and at least partially delimit a cavity (50) permeable by a first heat transfer medium. The invention further relates to a method for room climate control, wherein a partition (1) of the type indicated is introduced into the room, the room air of the room to be climate controlled is brought into contact with the partition, then the partition is brought into a different room, in particular into a cellar room, and the room air of the other room is brought into contact with the partition.

Description

Patent Application:

POSITION WALL AND METHOD FOR ROOM CLIMATIZATION

Applicant:

Fraunhofer-Gesellschaft for the promotion of applied

Research e.V.

The invention relates to a partition with at least a first cover layer and at least a second cover layer, wherein the first cover layer and / or the second cover layer having an interior (31) which contains at least a first phase change material (41) having a first Umschlagtemperatur.

From EP 1 703 033 A2 it is known to provide a lightweight board with a phase change material or latent heat storage. In this way, the lightweight board can store or release heat energy at a constant temperature, in order to stabilize the room temperature in this way. The disadvantage of this known lightweight board, however, is that it can absorb only small amounts of the phase change material. In addition, the available wall surface, which can be provided with the known lightweight board, limited by the space size.

The invention is therefore based on the object of specifying a method and a device for room air conditioning, with which the room temperature can be kept constant without additional energy consumption of an air conditioner.

The object is achieved by a partition with at least a first cover layer and at least a second cover layer, wherein the first cover layer and / or the second cover layer having an interior, which contains at least a first phase change material having a first Umschlagtemperatur, wherein the first cover layer and the second cover layer are spaced from each other and at least partially define a cavity, which is flowed through by a first heat transfer medium.

Furthermore, the solution of the object in a method for room air conditioning, in which a partition (1) is introduced into the space to be conditioned, with at least a first cover layer and at least a second cover layer, which are spaced from each other and at least partially define a cavity, wherein the first cover layer and / or the second cover layer each have an interior space

Subsequently, the room air of the room to be conditioned is brought into contact with the partition wall, the partition wall subsequently moved into another room, in particular a basement room, and the room air of the other room is filled with the Shutter placed in contact.

According to the invention, it is proposed to equip not only the outer boundary walls of a room to be conditioned with lightweight panels, which contain a phase change material, but also to introduce additional partitions in the room to be air-conditioned. The partitions can be permanently mounted in the room to be air conditioned, for example as non-load-bearing interior walls. In other embodiments of the invention, the partitions may be temporarily arranged in space, for example as a poster stand or

Posters surface. In yet another embodiment, the partitions may be used as a mobile division of the space, for example the different ones Delineate work areas of a large office. In this way, the available for cooling the room wall surface is increased.

The proposed partition wall comprises at least a first cover layer and at least a second cover layer, which are spaced from each other. The cover layers may be made of a thermally conductive material, for example a metal or an alloy or a filled plastic. The filling material of the plastic may contain a metal or an alloy or carbon fibers or carbon granules or powder. In other embodiments of the invention, at least one cover layer may also be made of an open-pore building material, for example a plasterboard. Both cover layers include a cavity whose size is determined by the area of the partition wall and the

Distance between the two cover layers is given. The cavity can serve as a fluid channel through which a first heat transfer medium can flow through the partition wall. In this way, the contact surface of the phase change material can be increased, so that a larger amount of heat per unit time can be implemented. In one embodiment of the invention, the first heat transfer medium may be the room air of the room containing the proposed partition.

Furthermore, the first cover layer and / or the second cover layer have an inner space which can be completely or partially filled with a phase change material. In this way, a larger amount of phase change material can be placed in the room than, for example, made possible by phase change material-containing interior plasters or wall paints. The phase change material or the latent heat storage contains a material which undergoes a phase change at a first Umschlagtemperatur. In some embodiments, it may be a solid-liquid phase transition or a liquid-solid phase transition. During the phase transition, the phase change material absorbs heat from the room to be conditioned or gives off heat to the room to be conditioned. During the phase transition, the temperature of the phase change material remains approximately constant and is approximately in the vicinity of the first Umschlagtemperatur. In this way, a temperature increase in the room is counteracted, for example, in sunlight. In the same way, a cooling of the room is counteracted when the energy balance is negative, ie heat escapes from the room into the environment.

In some embodiments of the invention, the flow of the first heat transfer medium through the cavity may be maintained by natural convection. In another embodiment of the invention, the partition wall may further comprise at least one fan, with which

Room air can be introduced as a heat transfer medium in the cavity. In this way, the desired heating or cooling capacity can be adjusted by the power control of the fan. In conjunction with a room temperature controller, the performance of the fan can be controlled to further minimize room temperature variation. The at least one fan can be supplied with electrical energy via a mains connection, a battery or an accumulator. In some embodiments of the invention it can be provided that the partition wall contains at least a second phase change material with a second envelope temperature. Provided the second Umschlagtemperatur is different from the first Umschlagtemperatur, not only the exceeding of a maximum temperature can be avoided with the proposed partition, but also the falling below a

Limit temperature. This allows the room temperature to remain largely within a narrow temperature range. Such a fitted wall can make a contribution to the preventive conservation of art treasures in museums, depots or listed buildings.

In some embodiments of the invention, the partition can contain at least one fluid channel, which can be flowed through by a second heat transfer medium. The second

Heat transfer medium may contain a cooling water, a heating water or an oil. In this way, this can be at least one

Phase change material of the partition wall are liquefied or hardened, so that the partition during your subsequent use in a room to be conditioned absorbs heat in the desired manner or dissipates cooling power. In one embodiment, the partition wall heat can be removed by means of the second heat transfer medium, so that the containing phase change material solidifies. Subsequently, the partition can be brought into a room to be air conditioned, for example, at the beginning of a summer day, at which a temperature increase is expected or before the start of an event in which a large number of visitors causes a large heat input into the room. During the day or during the event, the partition then absorbs the heat input, with the phase change material liquefying at an approximately constant temperature. After the event, the partition can be regenerated again by means of the second heat transfer medium. In some embodiments, the partition wall may comprise at least one transport device, by means of which the partition wall is movable. In this way, the partition wall can be easily used in different rooms, which at a certain time need additional air conditioning, for example, during an event.

Furthermore, the partition can be moved by the transport device in a naturally cool room,

For example, a basement room to be regenerated in this way without additional use of energy. The

Transport device may contain wheels.

In some embodiments, the partition wall can be flowed through exclusively by the first heat transfer medium. In this case, the partition wall contains no fluid channel, which can be flowed through by a second heat transfer medium. Such a configured partition wall is particularly easy to transport because no line connections have to be made or separated. Furthermore, the partition in any room can be placed anywhere, without having to pay attention to existing connections for the second heat transfer medium. Nevertheless, the partition can be as above

described in a simple manner by spending in another room, outdoors or by airing during the cooler night hours easily activated or

be regenerated.

The performance of the partition can be increased in some embodiments of the invention in that the first cover layer and / or the second cover layer each having a first side and a second side, wherein the first side is executed plan and on the second side ribs are arranged. The ribs in the sense of the present invention may be individual elevations or protruding elements, which protrude beyond the surface of the cover layer. In other embodiments of the invention, the cover layer may be structured in only one dimension, giving the impression of a wavy surface, as in a corrugated or trapezoidal sheet. Finally, both forms of the

Structuring can be used to the proposed

Form ribs, so both concave and convex surface areas of the cover layer, which in turn carry at least on a partial surface finger-shaped, protruding elements. By the proposed ribs, which are arranged at least on one side on the cover layer, the surface of the cover layer is increased. In this way, a larger amount of heat can be transported through the cover layer into the cavity. In some embodiments, the ribbed surface of the topsheet faces the cavity. In this way, there is a good thermal contact of the first

Heat transfer medium with the cover layer. At the same time the space facing side of the cover layer remains flat, so that neither the visual appearance of the partition is impaired, nor by protruding ribs there is a risk of injury to the partition.

In some embodiments, the space-facing side of the first cover layer and / or the second cover layer may at least partially support a functional coating. Such a coating can contribute to the buffering of the room humidity by absorbing excess moisture and, in the event of dryness of the room air, releasing the absorbed moisture again. A partition thus configured can thus additionally reduce the daily humidity fluctuations. In further embodiments of the invention, the functional coating may provide an acoustic enhancement of the Effect space and / or filter air pollutants and / or decompose into harmless compounds.

The invention is based on figures without

Restriction of the general inventive concept will be explained in more detail. Showing:

Figure 1 shows a cross section through a proposed partition wall.

Figure 2 shows an inventive partition wall in elevation.

Figure 1 shows a cross section through the partition wall 1 according to the invention in one embodiment. FIG. 1 shows a first cover layer 10 and a second cover layer 20. The first and / or the second cover layer may consist of a

Made of metal or an alloy or a thermally conductive plastic. In some embodiments of the invention, the cover layers may contain or consist of an aluminum alloy or a copper alloy which has a particularly good thermal conductivity.

The second cover layer 20 has 22 ribs 23 on the inside. The ribs 23 may be concave and convex

Surface areas or be composed of protruding surface areas, which contribute to the surface enlargement of the inner surface 22. By enlarging the

Surface, a larger amount of heat per unit time can be delivered through the second cover layer 20 to the cavity 50 of the partition wall. In the illustrated embodiment, by way of example only the surface 22 is provided with ribs 23. In other embodiments of the invention may further

Surfaces 21, 12 or 11 of the first cover layer 10 and the second cover layer 20 may be provided with ribs. The first cover layer 10 and the second cover layer 20 are spaced apart by means of spacer elements 30. The

Spacers 30 may be made of a metal, an alloy or a plastic. The spacer elements 30 may have a square cross-section or another profile, for example a T-profile, a double-T-profile or a U-profile. The size of the spacer elements 30 defines, together with the surface of the first cover layer 10 and the second cover layer 20, the volume of the cavity 50. At the spacer elements 30 fastening elements 32 may be arranged to connect the partition wall to a room wall or with another partition wall.

The first cover layer 10 and / or the second cover layer 20 have an inner space 31. In the interior 31 of the first cover layer 10 and / or the second cover layer 20, at least a first phase change material 41 is arranged. In some

Embodiments of the invention may additionally be arranged a second phase change material 42 in the interior 31. Each of the phase change materials 41 and 42 has a material-dependent Umschlagtemperatur at which the

Phase change material absorbs or gives off heat without changing its temperature. In this way, at a predeterminable room temperature, which corresponds approximately to the Umschlagtemperatur, heat is removed from the phase change material of the partition wall or delivered to this, the room temperature remains approximately constant. The first phase change material and / or the second phase change material may contain, for example, salt hydrates or their solutions or paraffins. By choosing the material, the turnover temperature can be set to a predefinable value. Furthermore, the cavity 50 of the partition wall 1 is provided to be flowed through during operation of the partition wall with a first heat transfer medium. In some

Embodiments of the invention may be the first heat transfer medium, the room air surrounding the partition wall. The

However, the invention is not limited to the illustrated geometry for aeration. In other embodiments of the invention, a larger or smaller cross section may be predetermined. In some embodiments of the invention, the cavity 50 may include fluid channels 55 through which a second heat transfer medium may flow. The second heat transfer medium may be a cooling or heating water, with which the first phase change material 41 and / or the second

Phase change material 42 can be regenerated, i. the phase change material is in a predeterminable

State of aggregation brought.

In some embodiments of the invention, a coating 24 may be applied on the first side 21 of the second cover layer 20 and / or on the first side 11 of the first cover layer 10. The coating 24 can be carried out at least as a partial coating of the relevant surface. The coating 24 can further improve the performance characteristics of the partition wall 1, for example, the coating 24, the appearance of the partition wall 1 change.

Furthermore, the coating 24 may be designed to absorb excess moisture from the room air and / or to release moisture to the room air. In this way, the coating 24 can contribute to the buffering of the room humidity. Figure 2 shows an inventive partition wall 1 in elevation. The partition wall 1 has a substantially rectangular Outer contour on. The height and width of the partition may, in some embodiments, be between one meter and two meters. In other embodiments, the height of the partition may be adapted to the room height in which the partition is to be used.

Optionally, in some embodiments, the movable wall may include a conveyor 70 for easily moving the shelf from one room to another. For example, the transport device 70 comprise wheels, skids, carrying eyelets or a

Track. In the illustrated embodiment, the transport device 70 simultaneously makes contact with the floor 80 with its rollers. In this way, the partition wall 1 is mounted at a distance from the bottom 80. In the interior of the partition wall 1 run fluid channels 55th

Shown in FIG. 2 are four fluid channels 55, which run in a straight line through the cavity 50 of the partition wall 1. In other embodiments of the invention, the number of fluid channels 55 may also be larger or smaller. to

Extension of the flow path, the fluid channels 55 in some embodiments of the invention also not straight through the cavity 50 extend. The fluid channels 55 are hidden in Figure 2 by the first cover layer 10 and therefore shown in dashed lines. In order to ensure a flow of the first heat transfer medium, in the illustrated embodiment, room air, in some embodiments at the lower or upper boundary edge of the cavity 50 at least one

Ventilation element 60 may be arranged. The ventilation element 60 generates a flow of the room air through the cavity 50 and thereby accelerates the heat exchange between the phase change material and the room air. In some

Embodiments of the invention, the air performance of the ventilation elements 60 can be controlled to regulate the heat dissipation or heat absorption of the phase change material. In other embodiments of the invention, at least one ventilation element 60 may also be arranged on the upper boundary edge of the cavity 50.

Of course, the invention is not limited to the embodiments shown in the figures. The above description is therefore not to be considered as limiting, but as illustrative. The following claims are to be understood as meaning that a named feature is present in at least one embodiment of the invention. This does not exclude the presence of further features. If the claims and the above description define "first" and "second" features, this designation serves to distinguish two similar features, without one

To set priority.

Claims

claims

1st partition (1), which as a mobile subdivision of a

Space is usable, with at least a first cover layer (10) and at least a second cover layer (20), wherein the first cover layer and / or the second cover layer having an interior (31), which at least a first phase change material (41) having a first Umschlagtemperatur contains, wherein the first cover layer (10) and the second cover layer (20) are arranged spaced from each other and at least partially define a cavity (50), which can be flowed through by a first heat transfer medium.

Second partition according to claim 1, further comprising

at least one second phase change material (42) having a second envelope temperature.

3. Partition wall according to one of claims 1 or 2, further comprising at least one fan (60), with which room air as the first heat transfer medium in the cavity (50) can be introduced.

4. Partition wall according to one of claims 1 to 3, wherein the first cover layer (10) and / or the second cover layer (20) contains or consists of a metal, a plastic or an alloy.

5. Partition wall according to one of claims 1 to 4, further comprising at least one fluid channel (55), which can be flowed through by a second heat transfer medium.

6. partition wall according to one of claims 1 to 4, characterized

in that it can only be flowed through by the first heat transfer medium.

7. Partition wall according to one of claims 1 to 6, further comprising a transport device (70) by means of which the partition wall (1) is movable.

8. partition wall according to one of claims 1 to 7, characterized

characterized in that the first cover layer (10) and / or the second cover layer (20) each have a first side (11, 21) and a second side (12, 22), wherein the first side (11, 21) is made plan and on the second side (12, 22) ribs (23) are arranged.

9. partition wall according to claim 8, characterized in that the second side (12, 22) faces the cavity (50).

10. partition according to one of claims 1 to 9, characterized in that on the first side (11, 21) of the first cover layer (10) and / or the second cover layer (20) at least partially a coating (24) for buffering the room humidity is applied.

11. A method for room air conditioning, which the

contains the following steps:

· Introducing at least one partition wall (1) into the room to be conditioned, with at least one first cover layer (10) and at least one second cover layer (20), which are arranged at a distance from each other and a cavity (50) at least partially

the first cover layer (10) and / or the second cover layer (20) each having an inner space (31) which contains at least a first phase change material (41) with a first cover temperature, • bringing into contact the room air of the room to be conditioned with the partition wall (1),

• Spend the partition wall (1) in another room, especially in a basement room or outdoors,

• bringing into contact the room air of the other room with the partition wall (1)

12. A method for room air conditioning, which the

contains the following steps:

• introducing at least one partition wall (1) into the space to be conditioned, with at least one first cover layer (10) and at least one second cover layer (20), which are arranged at a distance from one another and a cavity (50) at least partially

the first cover layer (10) and / or the second cover layer (20) each having an inner space (31) which contains at least a first phase change material (41) with a first cover temperature,

• In contact with the room air

air-conditioned room with the partition wall (1),

Activation of the partition (1) by flowing through the fluid channels with a cooler fluid.