Window module for thermal regulation of a building

Abstract

A window module (1) for thermal regulation of a building is described, with which the building can be heated or cooled. This comprises an exterior glazing (2) and an interior glazing (3). The exterior glazing (2) has a lower heat transfer coefficient (Ua) than the interior glazing (3) in order to regulate the temperature inside the building via the interior glazing (3). An air-liquid heat exchanger (5) comprises a fluid-flow cooling / heating element with a fluid line in which a heat transfer medium is guided. When the window module (1) is installed, the heat exchanger (5) is arranged horizontally at the bottom or top in the intermediate space (4) so that air can flow through the heat exchanger (5) from the intermediate space (4). When the window module (1) is installed, a fan (10) is arranged horizontally at the top or bottom in the intermediate space (4), wherein air is passed through the heat exchanger (5) by the fan (10) in order to exchange heat between the air and the heat transfer medium and to pass the air in the intermediate space (4) in a circuit. A separating element (19) arranged in the intermediate space (4) divides the intermediate space (4) into an inner intermediate space (4I) and an outer intermediate space (4A) in order to generate a rising and a falling air flow in the intermediate space (4). A controllably adjustable sun protection device (11) serves as a sun protection function, which is arranged in the outer intermediate space (4A) and adjoins to the exterior glazing (2) so that, when the sun protection function is activated, the outer intermediate space (4A) is formed completely or substantially between the sun protection device (11) and the separating element (19).

Description

[0001] P3512PC00 Subsequent Application

[0002] 1

[0003] HyWin GmbH c / o Ernst Treuhand & Wirtschaftsberatungs AG

[0004] Hintermattli strasse 1

[0005] 5506 Magenwil

[0006] Switzerland

[0007] Window module for thermal regulation of a building

[0008] Description

[0009] The invention relates to a window module for thermal regulation, comprising heating or cooling, of a building.

[0010] A window module for thermal regulation, which enables a building to be heated or cooled, is known, for example, from EP 3 320 275 Bl. The window module described therein comprises exterior glazing and interior glazing. The exterior glazing has a lower heat transfer coefficient than the interior glazing in order to thermally regulate the interior of the building via the interior glazing. An intermediate space sealed against solids, in particular dust, is formed between the exterior glazing and the interior glazing. An air-liquid heat exchanger is arranged in the intermediate space. The air-liquid heat exchanger comprises a fluid-flow cooling / heating element with a fluid line in which a heat transfer medium is guided. When the window module is installed, the air-liquid heat exchanger is arranged horizontally at the bottom or top of the intermediate space so that air from the intermediate space can flow through P3512PC00 Subsequent Application

[0011] 2 the air-liquid heat exchanger. When the window module is installed, a fan of the window module is arranged horizontally at the top or bottom of the intermediate space. This can be operated in a cooling mode and in a heating mode as operating modes of the window module, wherein at least in the cooling mode air is guided through the air-liquid heat exchanger by the fan in order to exchange heat between the air and the heat transfer medium and to guide the air in the intermediate space in a circuit. The window module further comprises a separating element arranged in the intermediate space, which runs parallel to the exterior glazing and the interior glazing and divides the intermediate space into an inner intermediate space and an outer intermediate space in order to generate a rising and a falling air flow in the intermediate space.

[0012] CH 475 468 A discloses a wall component that is at least partially designed as a window, with a cavity that is bounded on the room side by a front (inner) wall and on the outside by a rear (outer) wall, which walls are at least partially made of translucent material and in which cavity a translucent medium can circulate, with at least one heat exchanger being arranged in the cavity. To influence the heat medium, a horizontal heat exchanger is installed near the lower edge, which extends horizontally across almost the entire depth between the inner wall and the outer wall and is designed as a finned heat exchanger. A heating or cooling medium, e.g., water heated or cooled in a central unit, flows through pipes to and from the heat exchanger. A translucent partition wall, which extends at the top to the frame-like edge and adjoins the fins of the heat exchanger at the bottom, divides the cavity into two sections. Approximately in the middle between the two side boundaries, the partition wall has an opening near the upper edge into which a fan is installed as a conveying device. Sun and / or privacy protection devices are provided near the outer wall to reduce the radiation load on the wall section and thus on the interior when the sun is shining. If these sun protection devices, e.g. in the form of lamella blinds, are not designed to reflect almost all of the sunlight, but instead absorb a large proportion of the incident solar energy themselves, at least one translucent insulating wall is provided between them and the flow section, separating an air-filled insulating cavity containing the blinds from the cavity. P3512PC00 Subsequent Application

[0013] 3

[0014] KR 2008 0015230 A and DE 44 31 928 Al disclose window modules, each with an outer glazing and an inner glazing, wherein an intermediate space is formed between the outer glazing and the inner glazing, in which a sun protection device is arranged. The inner glazing is pivotably arranged so that it and the interior can be cleaned.

[0015] EP 0 164 111 B1 discloses a window module for a building, each with an outer glazing and an inner glazing, wherein an intermediate space is formed between the outer glazing and the inner glazing, in which a sun protection device is arranged. The window module has at least one light source in the intermediate space, which is designed to emit colored light.

[0016] EP 3 191 673 Bl discloses a window module with a frame and ventilation channels.

[0017] US 2017 / 191 309 Al discloses a window module with a frame, wherein a ventilation duct connectable to a ventilation device and connecting the interior of the building to the exterior of the building is formed in a frame element.

[0018] The object of the invention is to provide a window module that is structurally and / or functionally improved and enables increased efficiency in the thermal regulation of a building.

[0019] It is a further object of the invention to provide a method for improved thermal regulation of a building by means of a window module.

[0020] A further object of the invention is to provide a cooling and heating system for buildings with a window module which allows improved thermal regulation of the building in a simple manner. P3512PC00 Subsequent Application

[0021] 4

[0022] These objects are achieved by a window module according to the features of claim 1, and a cooling and heating system according to the features of patent claim 22. Advantageous embodiments are found in the dependent patent claims.

[0023] According to a first aspect, a window module based on the design principle of the aforementioned EP 3 320 275 Bl is proposed as a solution. The window module for thermal regulation, which enables a building to be heated or cooled, comprises an exterior glazing and an interior glazing, wherein the exterior glazing has a lower heat transfer coefficient than the interior glazing in order to thermally regulate the interior of the building via the interior glazing, and wherein an intermediate space sealed against solids, in particular dust, is formed between the exterior glazing and the interior glazing. The window module further comprises an air-liquid heat exchanger, which comprises a fluid-flow cooling / heating element with a fluid line in which a heat transfer medium is guided, wherein the at least one air-liquid heat exchanger is arranged horizontally at the bottom or top in the intermediate space when the window module is installed, so that air from the intermediate space can flow through it. The window module further comprises a fan, which is arranged horizontally at the top or bottom in the intermediate space when the window module is installed and which can be operated in a cooling mode and in a heating mode as operating modes of the window module, wherein at least in the cooling mode air is guided through the air-liquid heat exchanger by the fan in order to exchange heat between the air and the heat transfer medium and in order to circulate the air in the intermediate space. Finally, the window module comprises a separating element arranged in the intermediate space, which runs parallel to the exterior glazing and the interior glazing and divides the intermediate space into an inner intermediate space and an outer intermediate space in order to generate a rising air flow and a falling air flow in the intermediate space. The window module further comprises a controllably adjustable sun protection device as a sun protection function, which is arranged in the outer intermediate space and, in particular, directly adjoins the exterior glazing, so that when the sun protection function is activated, the outer intermediate space is formed completely or essentially between the sun protection device and the separating element. P3512PC00 Subsequent Application

[0024] 5

[0025] The underlying principle of the proposed window module is to exchange heat between the air in the intermediate space and the heat transfer medium flowing in the air-liquid heat exchanger. Depending on the temperature of the heat transfer medium, the air can then be cooled or heated. The cooled or heated air can be used to thermally regulate the interior of the building, hereinafter also referred to as conditioned usable space, via the interior glazing.

[0026] The exterior glazing displays a highly insulating glazing that insulates the window module and the interior of the building from the outside environment. In contrast, the interior glazing is simple glazing or safety glazing, as small amounts of heat are released or absorbed due to the controlled temperature in the intermediate space of the window module. As the exterior glazing is the highly insulating glazing, the window module enables the thermal regulation of the building. The difference between the heat transfer coefficient Uaof the exterior glazing and Ui of the interior glazing can be smaller than the heat transfer coefficient Ui of the interior glazing by a factor of at least 3, in particular by a factor of 5 or more, depending on whether the window module is to be used only for cooling or also for heating.

[0027] For example, the exterior glazing (e.g. as multiple glazing) can have a Ugvalue of 0.6 W / m2K. The interior glazing typically has a U-value of approx. 5.8 W / m2K. This results in a factor of 10 by which the heat transfer coefficient Ui of the interior glazing is greater than the heat transfer coefficient Uaof the exterior glazing. It goes without saying that other U-values are used when other glazing is used.

[0028] The function of the separating element is to divide the intermediate space into the inner intermediate space and the outer intermediate space to allow rising and falling air flow in the intermediate space. The solar shading function serves to regulate the amount of sunlight entering the interior of the building by setting the level of overlap with the window light automatically or by a user, allowing the daylight intensity in the conditioned usable space to be set. P3512PC00 Subsequent Application

[0029] 6

[0030] If the window module is exposed to sunlight, the components arranged in the intermediate space, such as frame elements of the window module, are heated by the solar radiation, whereby heat is transferred to the air, particularly in the outer intermediate space of the window module. The heat input can be regulated by the sun protection function. The heated air in the outer intermediate space of the window module is circulated with the help of the fan in the intermediate space of the window module, wherein the heated air is guided through the air-liquid heat exchanger. Heat is transferred to the heat transfer medium of the air-liquid heat exchanger via the air-liquid heat exchanger, whereby cold or colder air enters the inner intermediate space. The heat transfer medium dissipates the heat generated by solar radiation in the intermediate space of the window module. If the temperature of the air in the inner intermediate space is brought below the temperature of the interior of the building, the interior of the building can be cooled. The fan then transports the air back from the inner intermediate space to the outer intermediate space.

[0031] If, on the other hand, the interior of the building is to be heated, the air flowing from the outer intermediate space into the air-liquid heat exchanger is heated via the heat transfer medium, whereby warmer air enters the inner intermediate space. If the temperature of the air in the inner intermediate space is brought above the temperature of the interior of the building, the interior of the building can be heated.

[0032] The direction in which the air is guided in the intermediate space in the circuit is the same in both cooling and heating mode. This means that the fan does not need to change its direction of rotation. As a result, there is no need to provide a technically complex fan, as the air is always transported in the same direction, regardless of the operating mode of the window module.

[0033] As the intermediate space only needs to be sealed against solids, in particular dust, but is otherwise open to diffusion in relation to the usable space, there is no need to supply dried air to prevent condensation in the intermediate space of the window P3512PC00 Subsequent Application

[0034] 7 module. This simplifies the design of the window module and saves considerable costs for the provision of dried air with low overpressure.

[0035] The fact that the controllably adjustable sun protection device is adjoined to the exterior glazing, in particular directly (i.e. without or without a significant intermediate space), so that when the sun protection function is activated the outer intermediate space is formed completely or essentially between the sun protection device and the separating element, results in a less turbulent flow of air in the intermediate space. Due to an optimized flow, there is less vibration and less mechanical stress on the components of the window module arranged in the intermediate space. In addition, the window module can be operated with higher efficiency and lower noise levels. The adjoinment of the sun protection device to the exterior glazing also results in a lower heat input into the (outer) intermediate space of the window module if the sun protection device is activated.

[0036] According to an expedient embodiment, the intermediate space formed between the exterior glazing and the interior glazing is larger than 150 mm in order to guide a sufficient volume of air in the intermediate space in a circuit. The distance formed between the interior glazing and the exterior glazing is selected in particular depending on the type (in particular performance class) of the air-liquid heat exchanger and its installation position and can also be larger or significantly larger than the aforementioned 150 mm.

[0037] According to a further expedient embodiment, the separating element guides the air flow exiting the heat exchanger into the inner intermediate space in order to be returned via the outer intermediate space. As the interior glazing has a greater heat transfer coefficient than the exterior glazing, the controlled temperature in the intermediate space of the window module allows a desired amount of heat or cold to be emitted towards the usable space. P3512PC00 Subsequent Application

[0038] 8

[0039] According to a further expedient embodiment, the sun protection device is made of a material that absorbs and reflects solar radiation and is controllably adjustable in such a way that the daylight intensity in the usable space can be set. The sun protection device can, for example, be embodied as a roller blind, double roller blind, Venetian blind, textile curtain and the like. The sun protection device can also be integrated into the exterior glazing as switchable glass. For example, electrochromic glass, such as that sold by the company SageGlass, can be used for this purpose. In this case, it is not necessary to provide an additional, mechanically designed sun protection device (roller blind, Venetian blind, etc.) in the intermediate space.

[0040] According to another expedient embodiment, the separating element comprises a fixed transparent partition that extends across the entire width of the window module without any intermediate space. In other words, the separating element is not perceived by a user even when looking through the window module. Because the separating element extends across the entire width of the window module, the desired circulation of the air flow in the intermediate space can take place without a lateral bypass or ‘short circuit’.

[0041] Just as the separating element extends across the entire width of the window module, it is expedient for the air-liquid heat exchanger to extend across the entire width or almost the entire width, e.g. 90% or 80%, of the window module.

[0042] In order to enable maintenance of the components included in the intermediate space as well as cleaning of the exterior glazing on its inside and the interior glazing in the direction of the intermediate space, it is expedient if the interior glazing and the separating element can be opened, in particular pivoted, towards the inside of the building. This allows access to the air-liquid heat exchanger and / or fan and / or the sun protection device for maintenance and / or cleaning purposes. In particular, the interior glazing and the separating element can be pivoted to the side and / or upwards independently of each other. For example, the interior glazing can be pivoted about a vertically oriented axis, while the separating element can be pivoted about a horizontally P3512PC00 Subsequent Application

[0043] 9 oriented axis, and vice versa. It is also possible to swivel both elements around parallel orientated axes, e.g. vertically or horizontally.

[0044] According to a further expedient embodiment, the separating element is arranged in the intermediate space in such a way that the intermediate space formed between the exterior glazing and the separating element is larger than the intermediate space formed between the interior glazing and the separating element. The ratio between the outer intermediate space and the inner intermediate space is selected in particular depending on the type (in particular performance class) of the air-liquid heat exchanger and / or its installation position. For example, the ratio can be 1.5: 1, 2: 1, 2.5: 1 or 3 : 1.

[0045] A particularly simple design of the window module is made possible by the separating element being supported on a housing wall of the fan and a housing or connecting element of the air-liquid heat exchanger. Alternatively, the separating element can be supported on other elements of the window module, e.g. the frame.

[0046] According to a further embodiment of the window module, it is provided that at least one illuminant designed to emit colored light is arranged in the intermediate space, in particular on the separating element or adjoining it, and / or outside the intermediate space and adjoining the interior glazing, wherein the color can be used to signal a working mode of the window module (heating or cooling or neutral) or information directed at the user. The illuminant can, for example, be designed as a strip-shaped light source comprising a large number of LEDs designed to emit colored light. Such LED strips can be suitably controlled in a small installation space in order to emit information directed at the user or a working mode of the window module by means of a given color. Such information can, for example, be signals in the sense of humanmachine interaction. For example, simple things can be projected onto the facade or the floor, such as flags at a sporting event. Alternatively, an optical fiber with light fed into its end or ends can be used as an illuminant. P3512PC00 Subsequent Application

[0047] 10

[0048] Expediently, the fan is a speed-controllable cross-flow fan, wherein the volume of air circulating in the intermediate space or the speed of the air flow can be adjusted by setting the speed. In conjunction with the operation of the air-liquid heat exchanger, this allows the heat or cold input to the usable space to be regulated. Preferably, the air-liquid heat exchanger is a tubular heat exchanger, in particular a finned heat exchanger, in which the volume flow of the heat transfer medium can be set in a controllable manner.

[0049] When the window module is installed in the building, a lower side of the housing of the fan is expediently arranged above the lower edge of a ceiling, in particular a concrete ceiling. An upper side of the housing of the air-liquid heat exchanger is expediently arranged below an upper edge of the floor. This ensures that the technical components of the window module are out of sight of a user who is inside the building.

[0050] According to a further expedient embodiment, a controllable or adjustable valve is arranged in the fluid line of the air-liquid heat exchanger on the inlet side, wherein the position of the valve can be used to set a volumetric flow rate of the heat transfer medium through the air-liquid heat exchanger between 0 % and 100 %. In conjunction with the speed of the fan, this allows the heat or cold input to the usable space to be regulated.

[0051] A further expedient embodiment provides that this comprises a frame with an upper frame element in the installed state, a lower frame element and two, in particular vertical, lateral frame elements connecting the upper frame element and the lower frame element, wherein a ventilation duct, which is thermally insulated from the window module and can be connected to a decentralized ventilation device, in particular a pulse ventilation device, is formed in or through the lower frame element and connects the interior of the building with the exterior of the building. This means that it is not necessary to provide ventilation systems for air exchange (air hygiene). If several window modules are arranged next to each other in a building facade, it is not necessary to provide each window module with a ventilation duct. It is sufficient, for P3512PC00 Subsequent Application

[0052] 11 example, to provide a single window module or every second or nth (n > 2) window module per usable space with a ventilation duct and a ventilation device.

[0053] It is furthermore expedient if the lower frame element closes off the intermediate space with a trough-shaped paneling element in order to achieve air deflection in the intermediate space, in particular without turbulence. The term ‘trough-shaped paneling element’ is to be understood in such a way that the lower frame element is V- or U-shaped in cross-section, perpendicular to a plane of the outer or interior glazing, wherein the two free ends of the ‘V’ or ‘U’ adjoin each other or the central element of the ‘U’ at an obtuse angle. In addition to the air deflection function, the troughshaped paneling element also serves to collect any heat transfer medium escaping from the air-liquid heat exchanger. The presence of such a ‘fault’ can be determined by sensors, for example, by arranging a suitably designed sensor in the troughshaped paneling element.

[0054] It is also expedient if the ventilation duct is arranged below the trough-shaped paneling element or to the side of the trough-shaped paneling element. This means that the ventilation duct is arranged below the air-liquid heat exchanger or laterally next to the air-liquid heat exchanger.

[0055] According to a further embodiment of the window module, the latter comprises a local control unit which is designed to regulate and / or control at least one actuator of the window module, comprising a valve actuator and / or a drive of the fan and / or a drive of the sun protection device, in such a way that an actual room temperature value received corresponds to a given target room temperature value. In other words, it is intended to use the local control unit to regulate the speed of the fan and / or the volume flow of the air-liquid heat exchanger and / or the sun protection device in such a way that the target room temperature is achieved.

[0056] In a further embodiment, the window module comprises at least one sensor, comprising respective temperature sensors for detecting the temperatures of the heat transfer P3512PC00 Subsequent Application

[0057] 12 medium at the inlet and / or outlet of the fluid line of the air-liquid heat exchanger and / or the temperatures of the air at the inlet and / or outlet of the air-liquid heat exchanger, wherein the temperature values are provided to at least the local control unit for processing for the regulation and / or control of the at least one actuator.

[0058] In addition, it may be provided that the local control unit comprises an interface at which it receives at least the actual room temperature value and the given target room temperature value from a central control unit of the building or a part of the building. A part of a building (building section) is understood to mean, for example, a floor or building wing / segment or usable space or a group of usable spaces. The local control unit can also transmit data to the central control unit via the interface, such as the above-mentioned temperature values, which enable the central control unit, for example, to perform a power calculation to precisely calculate the currently optimal building supply. Detailed fault messages can also be transmitted from the local control unit to the central control unit. This enables faults to be rectified quickly in the event of a malfunction. This enables efficient operation of the window module for conditioning the usable space in a short space of time. The result is a saving on maintenance and operating costs.

[0059] As further information, the local control unit can receive a control signal for the drive of the sun protection device from the central control unit at the interface.

[0060] Data can be exchanged between the local control unit and the central control unit, for example, via a data bus, e.g. according to the well-known Modbus protocol.

[0061] According to a second aspect of the invention, a method for thermal regulation of a building by means of a window module according to one or more embodiments of the invention is proposed. In the method, at least in the cooling mode, air is passed through the air-liquid heat exchanger by the at least one fan in order to exchange heat between the air and the heat transfer medium and to guide the air in the intermediate space in a circuit. The direction in which the air is guided in the intermediate space in P3512PC00 Subsequent Application

[0062] 13 the circuit is the same in the cooling mode and the heating mode. This has the same advantages as those explained above in connection with the window module according to the invention.

[0063] According to a third aspect of the invention, a cooling and heating system for buildings with at least one window module according to one or more embodiments of the invention is proposed. The cooling and heating system further comprises a device which is designed to transport a heat transfer medium in at least one circuit from a respective first temperature level to a respective second temperature level. The device can, for example, be a combined heat and power machine, such as a heat exchanger, a heat pump (air-water heat pump with outside air, brine-water heat pump with geothermal probes or ground collectors, water-water heat pump with groundwater or cold local / di strict heating), a transfer station of a district heating grid, a com- bustion-based heating system (e.g. pellet heating, gas heating, etc.). The first temperature level can be higher than the second temperature level (cooling mode). The first temperature level can also be lower than the second temperature level (heating mode).

[0064] In particular, only one hydraulic system can be provided per horizontally adjacent window modules, per facade orientation and floor of a building. This creates consistent hydraulic conditions for all window modules. The electrical energy for the fan is obtained mainly from renewable energy sources, at least in summer cooling mode. Such renewable energy sources can be, for example, photovoltaic modules integrated into the facade. Advantageously, when solar radiation is high, the electrical power required for the fans is generated simultaneously by photovoltaic modules in the same facade. The simultaneity of solar radiation and cooling demand makes this solution particularly effective. In winter heating mode, the fans can be operated at reduced power.

[0065] The invention is explained in more detail below with reference to examples of embodiments in the drawings. These figures show: P3512PC00 Subsequent Application

[0066] 14

[0067] Fig. 1 a schematic representation of a window module according to the invention in cross-section;

[0068] Fig. 2 a schematic representation of the window module shown in Fig. 1 installed in a usable space of a building;

[0069] Fig. 3 a schematic representation of two window modules installed in respective usable spaces on opposite sides of the building, which are constructed as shown in Fig. 1 and hydraulically coupled to each other; and

[0070] Fig. 4 A schematic representation of two window modules installed on opposite sides of the building in respective usable spaces, which are hydraulically coupled to each other and connected to a device for supplying warm or cold heat transfer medium.

[0071] The same reference numbers are used for the same elements in all figures. The drawings are merely schematic in nature and serve to illustrate the invention, so that the dimensions and proportions do not necessarily correspond to reality.

[0072] Figs. 1 to 4, described in detail below, show a schematic representation of an example of a window module 1 according to the invention in cross-section. The window module 1, which is shown alone in Fig. 1 and in Figs. 2 to 4 in different installation situations, is designed to be used for the thermal regulation of a building. Thermal regulation of a building is understood to mean the possibility of conditioning a usable space 30 located on an interior side IS of the window module 1 by means of heating or cooling. The window module 1 also provides sun protection by means of adjustable shading and can also be designed to enable ventilation of the usable space 30.

[0073] The window module 1 comprises a frame 12, which in this example consists of four frame elements, of which an upper frame element 120 and a lower frame element P3512PC00 Subsequent Application

[0074] 15

[0075] 12U are visible in the cross-sectional views shown. The letters ‘O’ and ‘U’ denote the ‘top’ or ‘bottom’ position of a respective frame in its installed state in a building not shown in detail. The frame elements 120, 12U and the left and right frame elements not shown in the figures hold an exterior glazing 2 and an interior glazing 3 of the window module 1 spaced apart from the latter. An intermediate space 4 sealed against solids, in particular dust, is formed between the exterior glazing 2 and the interior glazing 3. The intermediate space 4 is open to diffusion towards the usable space in order to prevent condensation. The intermediate space 4 is filled with air.

[0076] While the exterior glazing 2 is highly insulating glazing, the interior glazing 3 can be designed as single glazing, single-pane safety glass or laminated safety glass. This means that the heat transfer coefficient Uaof the exterior glazing 2 is lower than the heat transfer coefficient Ui of the interior glazing 3. The factor by which the heat transfer coefficient Uaof the exterior glazing 2 is lower than the heat transfer coefficient Ui of the interior glazing 3 depends fundamentally on the desired thermal regulation of the building. It is expedient that the heat transfer coefficient Uaof the exterior glazing 2 is at least three times lower than the heat transfer coefficient Ui of the interior glazing 3, and preferably five times lower or more. If the window module is designed solely for cooling the building, a factor of 3 is sufficient, i.e. Ui / Ua= 3. If the window module is also to be used to heat the usable space, a factor of 5 or greater is expedient, i.e. Ui / Ua> 5.

[0077] The highly insulating exterior glazing 2 significantly reduces heat exchange between the exterior AS (also referred to as the environment) of the building and the interior of the window module 1, but also of the usable space 30 on the interior IS, i.e. the interior of the building. Due to the thermal regulation of the temperature by the window module 1, a less insulating interior glazing 3 is advantageous, since heat is or should be transferred to the interior or from the usable space to the window module due to the temperature controlled by the window module 1. P3512PC00 Subsequent Application

[0078] 16

[0079] The window module 1 comprises an air-liquid heat exchanger 5, which comprises a fluid-flow cooling / heating element with a fluid line in which a heat transfer medium is guided. Water or a water-glycol mixture can be used as the heat transfer medium, for example. The air-liquid heat exchanger 5 is in particular a tubular heat exchanger, in particular a finned heat exchanger. Such tubular heat exchangers are well known to those skilled in the art, so that a detailed description of the design is omitted here.

[0080] In the embodiments shown in Figs. 1 to 4, the air-liquid heat exchanger is arranged in the installation state of the window module 1 at the bottom, lying horizontally, in the intermediate space so that air from the intermediate space can flow through it. As can be readily seen in Fig. 1 in particular, the air-liquid heat exchanger 5 is arranged adjacent to (or close to) the interior glazing 3 and adjacent to the lower frame element 12U.

[0081] In an embodiment not shown in the figures, the air-liquid heat exchanger 5 could also be arranged horizontally at the top in the intermediate space when the window module 1 is installed, so that air from the intermediate space can flow through it. In this alternative embodiment, which is not shown in the figures, the air-liquid heat exchanger 5 would be arranged on the interior glazing 3 and adjacent to the upper frame element 120.

[0082] Although, based on the basic physical principle, the air-liquid heat exchanger 5 can be arranged both at the bottom and at the top, horizontally, in the intermediate space 4, from a design point of view it is preferable to arrange the air-liquid heat exchanger 5 in the intermediate space 4 at the bottom, as also shown in Figs. 1 to 4.

[0083] The air-liquid heat exchanger 5 is arranged in the window module 1 in such a way that air can flow through it from the intermediate space 4. The air guided in the intermediate space 4 transfers heat to the heat transfer medium via the air-liquid heat exchanger 5 or absorbs heat from it, so that the air guided in the intermediate space 4 in a circuit is cooled or heated. The heat transfer medium in the air-liquid heat P3512PC00 Subsequent Application

[0084] 17 exchanger 5 is cooled or heated in a device 48 which is designed to transport the heat transfer medium in at least one circuit from a respective first temperature level to a respective second temperature level (Fig. 4).

[0085] The device mentioned, which is not described in further detail, can be a combined heat and power machine, e.g. a heat exchanger, a heat pump, a transfer station of a district heating network or a combustion-based heating system. The first temperature level can be higher than the second temperature level. In this case, the usable space 30 is heated. If the first temperature level is lower than the second temperature level, the usable space 30 can be cooled.

[0086] For force-guiding the air located in the intermediate space 4, a fan 10 is arranged in the intermediate space 4. The fan 10 guides air through the air-liquid heat exchanger 5 in the direction of the arrows H (direction of air flow in heating mode) and K (direction of air flow in cooling mode) in order to exchange heat between the air and the heat transfer medium guided in the air-liquid heat exchanger 5. In addition, the fan 10 serves to guide the air in the intermediate space 4 in a circuit, the direction of which is indicated by the arrows H, K.

[0087] The fan 10 is arranged at the top or bottom, arranged horizontally, in the intermediate space 4 when the window module is installed. The fan 10 is arranged horizontally at the top in the intermediate space 4 when the air-liquid heat exchanger 5 is arranged horizontally at the bottom in the intermediate space 4, as shown in Figs. 1 to 4. In a corresponding manner, the fan 10 is arranged horizontally at the bottom in the intermediate space 4 when the air-liquid heat exchanger 5 is arranged horizontally at the top in the intermediate space 4. As described above, this embodiment variant is not shown in the figures.

[0088] The fan 10 is operated both in cooling mode and in heating mode, which are the operating modes of the window module 1. A cross-flow fan is preferably used as fan P3512PC00 Subsequent Application

[0089] 18

[0090] 10. This has a high efficiency, as the direction of rotation of the fan 10 does not need to be changed, regardless of the operating mode of the window module 1.

[0091] In order to guide the air in the intermediate space 4 in a circuit, the intermediate space 4 is subdivided into an inner intermediate space 41 and an outer intermediate space 4 A in order to enable - through force-guiding by the operation of the fan 10 - a rising air flow in the inner intermediate space 41 and a falling air flow in the outer intermediate space 4A. The subdivision of the intermediate space 4 into the outer intermediate space 4A and the inner intermediate space 41 is ensured by means of a separating element 19 arranged in the intermediate space 4.

[0092] The separating element 19, e.g. a fixed transparent partition 15, runs essentially parallel to the exterior glazing 2 and the interior glazing 3, with the separating element 19 extending across the entire width of the window module without any intermediate space. This prevents a ‘short circuit’ or ‘bypass’ between the outer intermediate space 4A and the inner intermediate space 41 at the side of the separating element 19.

[0093] The separating element 19 is preferably arranged in the intermediate space 4 in such a way that the intermediate space 4A formed between the exterior glazing 2 and the separating element 19 is larger than the intermediate space 41 formed between the interior glazing 3 and the separating element 19. The ratio between the outer intermediate space 4 A and the inner intermediate space 41 is selected in particular depending on the type of air-liquid heat exchanger (in particular its performance data) and its installation position. For example, the ratio can be 1.5: 1, 2: 1, 2.5: 1 or 3: 1.

[0094] The total length of the intermediate space 4 formed between the exterior glazing 2 and the interior glazing 3 is preferably greater than 150 mm. The distance formed between the interior glazing 3 and the exterior glazing 2 is also selected depending on the type and performance class of the air-liquid heat exchanger and its installation position. The distance can also be selected differently and, in particular, can be significantly greater than 150 mm. P3512PC00 Subsequent Application

[0095] 19

[0096] If the fan 10 is arranged at the top of the intermediate space 4 and the air-liquid heat exchanger 5 is arranged at the bottom of the intermediate space 4, as shown in Figs. 1 to 4, the air is transported in the inner intermediate space 41 from bottom to top, i.e. from the air-liquid heat exchanger 5 towards the fan 10, due to the direction of rotation of the fan 10, while the air is transported in the outer intermediate space 4A from top to bottom, i.e. from the fan 10 towards the air-liquid heat exchanger 5. If the fan 10 and the air-liquid heat exchanger 5 are arranged in the intermediate space 4 in the alternative configuration mentioned, this results in an air flow in the opposite direction. In any case, the window module is operated in such a way that the air in the intermediate space is guided in the same direction in the circuit, regardless of the operating mode (heating or cooling).

[0097] As can best be seen from the cross-sectional representation of Fig. 1, the separating element 19 can be supported on a housing wall 10G of the fan 10 and a housing or connecting element of the air-liquid heat exchanger 5, wherein this is not mandatory.

[0098] In order to enable maintenance of the components included in the intermediate space 4 (fan 10 and / or air heat exchanger 5) as well as cleaning of the exterior glazing 2 on its side facing the interior of the building 4 and of the interior glazing 3 in the direction of the intermediate space 4 as well as of the separating element 19, it is expedient if the interior glazing 3 and the separating element 19 can be opened towards the interior IS of the building or usable space 30. For this purpose, for example, the interior glazing 3 and the separating element 19 can be attached to joints not shown in the figure, which are located, for example, on a lateral frame element of the frame 12, in order to enable pivoting as with a conventional window sash. The interior glazing 3 and separating element 19 can be pivoted to the side, for example, or alternatively upwards. The direction of swiveling of the interior glazing 3 and separating element 19 can also be independent of each other. P3512PC00 Subsequent Application

[0099] 20

[0100] The window module 1 further comprises a controllably adjustable sun protection device 11 as a sun protection function. The sun protection device 11 is arranged in the outer intermediate space 4 A. In particular, it directly adjoins the exterior glazing 2, so that when the sun protection function is activated (i.e. partially or completely covering the exterior glazing and resulting shading of the usable space 30), the outer intermediate space 4A is completely or substantially formed between the sun protection device 11 and the separating element 19.

[0101] For example, as indicated in Fig. 1, the sun protection device 11 can be formed by a Venetian blind that is attached to the upper frame element 120. In Fig. 1, the blind is shown in its open position, in which the individual slats adjoin one another. If the distance between the adjoining slats is increased, the blind can be moved from above in the direction of the lower frame element 12U. Furthermore, by adjusting the angle of the slats, it is possible to determine how much light is to be transmitted towards the inside IS. Similarly, the extent to which the sun protection device 11 overlaps the exterior glazing 2 or the interior glazing 3 can be used to determine how much radiation is absorbed and reflected by the sun protection device 11.

[0102] The sun protection device 11 is preferably made of a material that absorbs and reflects solar radiation and is adjustable in such a way that the daylight intensity in the usable space 30 can be set. As an alternative to the blind shown, the sun protection device 11 can be embodied as a roller blind, double roller blind, textile curtain and the like. The mechanical components are preferably, as shown in Fig. 1, attached to the upper frame element 120 in such a way that, when deactivated, they can be completely accommodated in an intermediate space formed between the housing 10G of the fan and the exterior glazing 2, whereby the sun protection device 11 is outside a user's field of vision when deactivated.

[0103] The sun protection device 11 can also be integrated into the exterior glazing as switchable glass. For example, electrochromic glass such as that sold by the company SageGlass (https: / / www.sageglass.com / de / intelligentes-glas / funktionsprinzip- P3512PC00 Subsequent Application

[0104] 21 elektrochromem-glas) can be used for this purpose. In this case, the mechanical sun protection element (blind, roller blind, etc.) shown in Fig. 1 can be provided as an option.

[0105] The fact that the sun protection device 11 is adjoined to the exterior glazing 2 results in similar flow conditions in the circulation of the air in the intermediate space, regardless of whether the sun protection device 11 is activated or not. In particular, this results in a less turbulent flow of air compared to another arrangement of the sun protection function in the intermediate space, whereby the window module 1 can be operated with higher efficiency and less noise. In addition, by adjoining the sun protection device 11 to the exterior glazing 2, less heat can be introduced into the intermediate space 4 of the window module. This also results in lower vibrations and less mechanical stress on the components arranged in the intermediate space.

[0106] As can best be seen from Fig. 1, two (optional) illuminants 6, 7 are arranged in the intermediate space 4, which are designed to emit colored light. The illuminants 6, 7 are, for example, light guides or light strips, each comprising a plurality of, in particular individually controllable, LEDs, e.g. RGB LEDs. The illuminant 6 here is a lower illuminant, which is arranged in the outer intermediate space 4A adjoining the air-liquid heat exchanger 5. The illuminant 7 shows an upper illuminant, which is arranged in the outer intermediate space 4A adjoining the fan 10.

[0107] The illuminants 6, 7 serve in particular to signal the working mode of the window module by means of their color. Alternatively or additionally - with a suitable design of the illuminant 6, 7 - information directed at the user can also be signaled. Such information can be signals in the sense of human-machine interaction. For example, simple things can be projected onto a floor 32 or a ceiling 31 (Fig. 2) of the usable space 30, such as flags of a sporting event (football World Cup or European Championship). P3512PC00 Subsequent Application

[0108] 22

[0109] Contrary to what is shown in the drawing, only one of the two illuminants 6, 7 may be provided in the window module. Alternatively, the illuminant(s) 6, 7 may also be arranged in the inner intermediate space 41. Alternatively or additionally, the illumi- nant or illuminants may also be arranged outside the intermediate space 4, in particular adjoining the interior glazing 3, for example on or in the lower or upper frame element 12U, 120.

[0110] As described above, the air-liquid heat exchanger 5 comprises a fluid-flow cool- ing / heating element with a fluid line in which the heat transfer medium is guided. A controllable or adjustable valve 42 is arranged on the inlet side of the fluid line of the air-liquid heat exchanger 5, wherein a volume flow of the heat transfer medium through the air-liquid heat exchanger 5 can be set between 0 % and 100 % by the position of the valve 42 by means of a valve drive 43. In Fig. 1, the valve is only shown schematically and, for the sake of simplicity, outside the frame 12 of the window module. In practice, the valve 42 and its valve drive 43 can, for example, be arranged in the lower frame element 12U.

[0111] The valve drive 43 is, for example, a servomotor that is supplied with electrical energy. For this purpose, a power supply line 44 is schematically indicated, which, for example, is also associated with the lower frame element 12U or guides into it.

[0112] As schematically shown in the figures, the valve 42 is arranged in a supply line 40 to the fluid line of the air-liquid heat exchanger 5. A return line of the window module 1, which is coupled on the output side to the fluid line of the air-liquid heat exchanger 5, is schematically labelled with the reference numeral 41.

[0113] The lower frame element 12U has a trough-shaped paneling element 13 on its wall side facing the intermediate space 4. On the one hand, this achieves air deflection with low turbulence in the intermediate space 4. On the other hand, should the airliquid heat exchanger 5 lose liquid due to a technical defect, the heat transfer medium escaping from the air-liquid heat exchanger 5 can collect in the trough-shaped P3512PC00 Subsequent Application

[0114] 23 paneling element 13. In order to detect such a leakage of the air-liquid heat exchanger 5, it is expedient if a corresponding leakage sensor is arranged on the floor of the trough-shaped paneling element 13 of the lower frame element 12U.

[0115] Preferably, an optional ventilation duct 9 is formed in the intermediate space formed between the floor of the trough-shaped paneling element 13 and the lower wall surface of the lower frame element 12U, which connects the exterior AS of the building with the interior IS of the building or usable space 30. In particular, the ventilation duct 9 is connected to a pulse ventilation device not shown in detail in the figures in order to enable air exchange without the need for a separate ventilation system in the building.

[0116] If several window modules are arranged next to each other in a building facade, which are associated with the same usable space 30, it is not necessary for each window module 1 to be provided with such a ventilation duct 9. It is sufficient, for example, to provide e.g. one window module per usable space 30 or every nth window module per usable space 30 with a ventilation duct 9 and associated (pulse) ventilation device.

[0117] While in the graphic representation of Fig. 1 the ventilation duct 9 is arranged below the trough-shaped paneling element 9, the ventilation duct 9 could also be arranged laterally next to the trough-shaped paneling element 13, provided that the troughshaped cross-section does not extend over the entire width of the lower frame element 12U. In other words, this means that the ventilation duct 9 can thus be arranged below the air-liquid heat exchanger 5 or laterally next to it.

[0118] As has become clear from the preceding description, the window module 1 comprises a plurality of actuators (valve drive 43, speed-controllable fan 10, drive of the sun protection device 11, illuminants 6, 7) and sensors (leakage sensor 8, various temperature sensors, etc.), for the control of which a local control unit 20 is provided. The term ‘control unit’ is to be understood as a control and regulation unit, i.e. a P3512PC00 Subsequent Application

[0119] 24 computing unit which is designed to control or regulate a respective technical component depending on its application.

[0120] The control or regulation of the actuators 6, 7, 10, 11, 43 takes place individually as a function of an actual room temperature value Tist received, so that this corresponds to a given target room temperature value TS0n. By way of example only, the local control unit 20 is arranged in the upper frame element 120. It is understood that this is connected to the power supply line 44 or a separate power supply line guided into the upper frame element 120 for its power supply.

[0121] In addition to the leakage sensor 8 explicitly shown in Fig. 1, the window module 1 comprises the sensors already mentioned above, the measured values of which are provided at least to the local control unit 20 of the window module 1 for processing for the regulation and / or control of one or more actuators 6, 7, 10, 11, 43. In particular, the sensors provided are respective temperature sensors, not explicitly shown in the figures, for detecting the temperatures of the heat transfer medium at the inlet and / or outlet of the fluid line of the air-liquid heat exchanger 5 and / or the temperatures of the air at the inlet and / or outlet of the air-liquid heat exchanger 5.

[0122] The local control unit 20 is designed to exchange data with a central control unit 25 (Figs. 2 to 4), i.e. to receive data from the central control unit 25 and / or to transmit data to the central control unit 25. The central control unit 25 is in particular a central control unit of the entire building or a part of the building, e.g. a floor, wing, building segment, usable space or group of usable spaces.

[0123] For data communication, the local control unit 20 comprises an interface, not explicitly shown, at which it receives at least the aforementioned actual room temperature value Tist and the given target room temperature value TS0n from the central control unit 25. The local control unit 20 can also receive a control signal (up, down) for the drive of the sun protection device 11 from the central control unit 25 at the interface. Such a control signal can be generated automatically, for example, if the window P3512PC00 Subsequent Application

[0124] 25 module 1 is exposed to strong solar radiation in a building facade facing south, for example. The control signal can also be generated user-based at a usable space control unit not shown.

[0125] The central control unit 25 can be connected to further sensors, e.g. a room sensor 33, for generating the control signals (Tist, TS0n, Up, Down). The sensor 33 may comprise one or more identical or different sensors, which are designed to measure different sensor values and transmit them to the central control unit 25. Such a sensor is also referred to as a multi-sensor. For example, the sensor 33, which is arranged, for example, on the ceiling 31 of the usable space 30, can detect the actual room temperature (actual room temperature value Tist), an actual air humidity (rHist), a current illuminance (Lux) a current carbon dioxide value (CO2), a current volume (dB A), the presence of one or more persons in the usable space 30 and other values. The central control unit 25 then generates the corresponding control information from this information and transmits it to the local control unit 20.

[0126] As can be seen in Figs. 3 and 4, for example, the central control unit 25 can be coupled to a plurality of (multi-)sensors 33 S, 33N of a plurality of usable spaces 30S, 3 ON in order to receive respective data from these for processing. In the embodiment examples of Figs. 3 and 4, the suffix ‘S’ means that the usable space and the associated window module 1 S are arranged on a south-facing side of the facade. The suffix ‘N’ means that the usable space 3 ON and the associated window module IN are arranged on an opposite facade, the north-facing facade. It is understood that this is merely chosen as an example for explanatory purposes.

[0127] Fig. 3 also shows that the respective supply lines 40S, 40N and return lines 41 S, 41N are coupled to a pipe system 45 comprising a supply line arrangement and a return line arrangement. At least one switching and pumping device 46 is arranged in the pipe system 45. By means of the switching and pumping device 46, it is possible to connect a return line 41S of the window module 1 on the south side to a supply line P3512PC00 Subsequent Application

[0128] 26

[0129] 40N of the window module IN on the north side, so that the usable space on the south side can be cooled and the usable space 30 N on the north side can be heated.

[0130] In other words, according to the schematically shown arrangement in Fig. 3, an ‘energy transfer’ can take place from window modules that are exposed to strong solar radiation to window modules that are arranged on the shaded side, for example. While, for example, the usable spaces arranged on the south side can be cooled in this way with the aid of the window modules according to the invention, comparatively cooler usable spaces 3 ON on the north side can be tempered without the provision of a separate heating system.

[0131] Fig. 4 shows the arrangement of usable spaces and window modules of the building 100 already described in connection with Fig. 3, wherein the pipe system 45 is connected to an energy storage unit 47. The energy storage 47 is in turn coupled to a device which is designed to transport the heat transfer medium in the circuit from a respective first temperature level to a respective second temperature level. For example, the device 48 can be a geothermal heat storage tank, a heat pump (e.g. an air-to- water heat pump with outside air, a brine-to-water heat pump with geothermal probes or ground collectors, a water-to-water heat pump with groundwater or cold local / dis- trict heating), a heat exchanger, a transfer station of a company network or a combustion-based heating system (e.g. with pellets or gas or other fuels).

[0132] The window module 1 or a plurality of window modules 1 can be operated with regenerative energies and low flow temperatures in order to heat, cool, shade and optionally fan the building or respective usable spaces. If the device 48 is coupled with corresponding storage units, the energy consumption of the building 100 can be dimensioned in the direction of a passive high-rise building.

[0133] A respective window module 1 can be prefabricated as a module, so that the prefabricated window modules 1 can be arranged in a building facade with a plurality of window modules. However, the construction of the window module 1 also allows it to be P3512PC00 Subsequent Application

[0134] 27 designed as a post-and-beam facade, so that the components described above are installed on site in the respective window modules 1.

[0135] The window module 1 according to the invention can be used in a variety of applications and configurations, which are briefly described below:

[0136] The provision of a local control unit enables stand-alone operation of a respective window module. An integrated control system can also be realized in conjunction with the central control unit, which can be associated with the entire building, a part of the building or a usable space or a group of usable spaces. A resulting advantage is that a plurality of window modules can be combined or grouped together as required. If a room concept in a building is changed, e.g. large usable spaces are divided into two smaller usable spaces, grouping can be carried out purely via software without any hardware adjustments. The grouping takes place via the corresponding control of the valve drives of a respective window module. The default values are provided by the central control unit using sensor data from one or more sensors of the usable space to be controlled.

[0137] The separate arrangement of the air-liquid heat exchanger and fan means that greater efficiency can be achieved in the thermal regulation of the building, as turbulent flows can be avoided. This is noticeable during operation of the window module in the form of reduced background noise and less vibration and mechanical stress on the components included in the window module.

[0138] The arrangement of the air-liquid heat exchanger in the intermediate space at the bottom makes it easy to combine with optional decentralized ventilation. It is not necessary to provide each window module with its own decentralized ventilation device, e.g. a pulse ventilation device. It is sufficient to provide decentralized ventilation for each usable space or - for large usable spaces - for every nth window module. P3512PC00 Subsequent Application

[0139] 28

[0140] Communication between the local control units of the respective window modules and the central control unit preferably takes place via a data bus, e.g. the familiar Modbus. This makes it possible to expand the control system in a modular fashion. Other sequences in the room can also be controlled via the interface of the local control unit and / or central control unit, such as concrete core activation or decentralized ventilation.

[0141] In stand-alone operation of the window module, its local control unit obtains the specification as to whether heating or cooling is available, a target and actual room temperature and a release of the window module. A controller (e.g. PID controller) is used to regulate an actual / target deviation. The actuators of the control circuit are, in particular, the speed of the fan and the position of the valve drive of the air-liquid heat exchanger. Regulation takes place until the target values and actual values are equalized.

[0142] The illuminants can signal and psychologically reinforce the working mode of the window modules. For example, the color red can be used for heating mode, the color blue for cooling mode and the color green for the ‘all in balance’ status. The illuminants can also be controlled externally, e.g. via the user's room control unit or via an integrated building management system.

[0143] The provision of the local control unit, the central control unit and a large number of sensors in the respective window modules enables remote maintenance with regard to monitoring the components, reporting sensor values, operating states and faults as well as indicating a maintenance case. Corresponding data (actuator and sensor signals) and fault messages can be communicated from the local control unit to the central control unit, for example.

[0144] For any leaks from the heat exchanger and other water ingress into the intermediate space of the window module, the leakage sensor is provided on the floor of the intermediate space, i.e. on the top of the lower frame element. Any accumulation of water P3512PC00 Subsequent Application

[0145] 29 is transmitted by the leakage sensor to the local control unit, which forwards the corresponding information to the central control unit.

[0146] By monitoring the air-side inlet temperature at the air-liquid heat exchanger, overheating protection of the components can be provided. If the window module is ready for operation and is operated in ‘Cooling’ operating mode, active countermeasures can be taken. Otherwise, a fault message is output to the central control unit.

[0147] A plausibility check of the temperatures at the air-liquid heat exchanger can also be carried out. In ‘Heating’ operating mode, the air temperature on the input side must be colder than the air temperature on the output side. In ‘Cooling’ operating mode, this is the other way round. In contrast, in ‘Heating’ operating mode, the water-side inlet temperature must be higher than the outlet temperature. In ‘Cooling’ operating mode, this must be the other way round.

[0148] Furthermore, fault messages relating to the speed of the fan can be monitored by the local control unit and communicated to the central control unit.

[0149] If the window module is enabled, a fault message is generated by the hydraulics if a deviation is detected by a regulation with regard to a positive or negative difference in temperatures at the air-liquid heat exchanger. In contrast, an operating message can be issued if the window module is working correctly.

[0150] Furthermore, key performance indicators can be output to the central control unit and a building management system. On the air side, these are a characteristic curve of the fan, a speed and a temperature spread of the air at the inlet and outlet of the air-liquid heat exchanger. On the water side, a characteristic curve of the valve and the air-liquid heat exchanger as well as the cooling medium at the inlet and outlet of the air-liquid heat exchanger can be output. P3512PC00 Subsequent Application

[0151] 30

[0152] At least one window module according to the invention is associated with a usable space. The local control units of the window module(s) are connected, preferably via the central control unit, to one or more sensors (e.g. as a multi-sensor) in the usable space. Typically, it is sufficient to provide one multi-sensor per usable space. In very large rooms, several multi-sensors can also be provided per usable space.

[0153] The multi-sensor provides sensor values from the usable space as well as optionally from external data sources to the central control unit. It can simultaneously provide control information for the window module(s) in the usable space.

[0154] The multi-sensor can form the gateway for communication with external systems, such as a building management system, an Al platform or a forecasting unit. In another embodiment, the multi-sensor can also form or replace the central control unit. In this embodiment, the multi-sensor can be embodied as a room control unit.

[0155] The sensor 33 can also be the interface to a user control unit.

[0156] The following applications arise in the operation of a building with window modules according to the invention:

[0157] A room can be operated in an energy -efficient and energy-flexible manner.

[0158] It can be controlled in such a way that the use of natural light is maximized. This can be made possible by the angular position of the slats of a blind, the degree to which the sun protection device is closed and the like, without having a negative energy impact on the room. For this purpose, it is expedient to provide a brightness sensor and a control option for the sun protection device in the usable space.

[0159] The dew point can be monitored on the basis of room humidity. If the humidity is too high, the target room temperature in the usable space is raised. All window modules in the usable space concerned are then controlled. P3512PC00 Subsequent Application

[0160] 31

[0161] Reference numerals

[0162] 1, IN, IS window module

[0163] 2 exterior glazing

[0164] 3 interior glazing

[0165] 4 intermediate space

[0166] 41 inner intermediate space

[0167] 4A outer intermediate space

[0168] 5 air-liquid heat exchanger

[0169] 5G housing of the air-liquid heat exchanger

[0170] 6 illuminant (lower light strip)

[0171] 7 illuminant (upper light strip)

[0172] 8 leakage sensor

[0173] 9 ventilation duct

[0174] 10 fan

[0175] 10G fan housing

[0176] 11 sun protection device

[0177] 12 frame upper frame element

[0178] 12U lower frame element

[0179] 13 paneling element

[0180] 19 separating element

[0181] 20, 20S, 20N local control unit

[0182] 25 central control unit

[0183] 30 usable space

[0184] 31 ceiling

[0185] 32 floor

[0186] 33 (multi-)sensor

[0187] 40, 40S, 40N supply line

[0188] 41, 41S, 41N return line

[0189] 42 valve P3512PC00 Subsequent Application

[0190] 32

[0191] 43 valve drive

[0192] 44 power supply line

[0193] 45 pipe system

[0194] 46 switching and pumping device 47 energy storage

[0195] 48 device

[0196] 100 building

[0197] H heat flow cooling

[0198] K heat flow heating AS exterior of the building

[0199] IS interior of the building

Claims

P3512PC00 Subsequent Application33Claims1. Window module (1) for thermal regulation, comprising heating or cooling, of a building, comprising: an exterior glazing (2) and an interior glazing (3), wherein the exterior glazing (2) has a lower heat transfer coefficient (Ua) than the interior glazing (3) in order to thermally regulate the interior of the building via the interior glazing (3), and wherein an intermediate space (4) sealed against solids, in particular dust, is formed between the exterior glazing (2) and the interior glazing (3); an air-liquid heat exchanger (5) comprising a fluid-flow cooling / heating element with a fluid line in which a heat transfer medium is guided, wherein the air-liquid heat exchanger (5) is arranged horizontally at the bottom or top in the intermediate space (4) in the installed state of the window module (1), so that air from the intermediate space (4) can flow through it; a fan (10) which, in the installed state of the window module (1), is arranged at the top or bottom, arranged horizontally, in the intermediate space (4) and which can be operated in a cooling mode and in a heating mode as operating modes of the window module, wherein, at least in the cooling mode, air is guided by the fan (10) through the air-liquid heat exchanger (5) in order to exchange heat between the air and the heat transfer medium and to guide the air in the intermediate space (4) in a circuit; a separating element (19) arranged in the intermediate space (4), which runs parallel to the exterior glazing (2) and the interior glazing (3) and divides the intermediate space (4) into an inner intermediate space (41) and an outer intermediate space (4A) in order to generate a rising and a falling air flow in the intermediate space (4); and a controllably adjustable sun protection device (11) as a sun protection function, which is arranged in the outer intermediate space (4A), characterized in that the sun protection device (11) adjoins the exterior glazing (2), so that when the sun protection function is activated, the outer intermediateP3512PC00 Subsequent Application34 space (4A) is formed completely or substantially between the sun protection device (11) and the separating element (19).

2. Window module according to claim 1, characterized in that the heat transfer coefficient (Ua) of the exterior glazing (2) is smaller than the heat transfer coefficient (Ui) of the interior glazing (3) by a factor of at least 3, in particular by a factor of 5 or greater.

3. Window module according to claim 1 or 2, characterized in that the intermediate space (4) formed between the exterior glazing (2) and the interior glazing (3) is greater than 150 mm.

4. Window module according to one of the preceding claims, characterized in that the separating element (19) guides the air flow emerging from the air-liquid heat exchanger (5) into the inner intermediate space (41) in order to be returned via the outer intermediate space (4A).

5. Window module according to one of the preceding claims, characterized in that the sun protection device (11) is formed from a solar radiation absorbing and reflecting material, which is controllably adjustable in such a way that the daylight intensity in the usable space can be set.

6. Window module according to one of the preceding claims, characterized in that the separating element (19) comprises a fixed transparent partition (15) which extends over the entire width of the window module without intermediate space.

7. Window module according to one of the preceding claims, characterized in that the interior glazing (3) and the separating element (19) are openable, in particular pivotable, towards the interior of the building.P3512PC00 Subsequent Application358. Window module according to one of the preceding claims, characterized in that the separating element (19) is arranged in the intermediate space (4) in such a way that the intermediate space formed between the exterior glazing (2) and the separating element (19) is larger than the intermediate space formed between the interior glazing (3) and the separating element (19).

9. Window module according to one of the preceding claims, characterized in that the separating element (19) is supported on a housing wall of the fan (10) and on a housing or connecting element of the air-liquid heat exchanger (5).

10. Window module according to one of the preceding claims, characterized in that the intermediate space (4) is designed to be open to diffusion with respect to the conditioned usable space.

11. Window module according to one of the preceding claims, characterized in that at least one illuminant (6, 7) designed to emit colored light is arranged in the intermediate space (4), in particular on the separating element (19) or adjacent thereto, and / or outside the intermediate space and adjacent to the interior glazing (3), wherein the color can be used to signal an operating mode of the window module or an information intended for a user.

12. Window module according to one of the preceding claims, characterized in that the fan (10) is a speed-controllable cross-flow fan.

13. Window module according to one of the preceding claims, characterized in that the air-liquid heat exchanger (5) is a tubular heat exchanger, in particular a finned heat exchanger.

14. Window module according to one of the preceding claims, characterized in that a controllable or adjustable valve (42) is arranged on the inlet side of the fluid line of the air-liquid heat exchanger (5), wherein the position of the valve (42)P3512PC00 Subsequent Application36 allows a volume flow of the heat transfer medium through the air-liquid heat exchanger (5) to be adjusted between 0% and 100%.

15. Window module according to one of the preceding claims, characterized in that it comprises a frame (12) with an, in the installed state, upper frame element (120), a lower frame element (12U) and two lateral, in particular vertical, frame elements (12L, 12R) connecting the upper frame element (120) and the lower frame element (12U) wherein a ventilation duct (9) thermally insulated from the window module and connectable to a decentralized ventilation device, in particular a pulse ventilation device, is formed in or through the lower frame element (12U), which ventilation duct (9) connects the interior of the building to the exterior of the building.

16. Window module according to claim 15, characterized in that the lower frame element (12U) closes off the intermediate space with a trough-shaped paneling element (13) in order to achieve air deflection in the intermediate space.

17. Window module according to claim 15 or 16, characterized in that the ventilation duct (9) is arranged below the trough-shaped paneling element (13) or laterally adjacent to the trough-shaped paneling element (13).

18. Window module according to one of claims 14 to 17, characterized in that it comprises a local control unit (20) which is designed to regulate and / or control at least one actuator of the window module (1), comprising a valve actuator (43) and / or a drive for the fan (10) and / or a drive for the sun protection device (11), in such a way that a received actual room temperature value (Tist) corresponds to a given target room temperature value (TS0n).

19. Window module according to claim 18, characterized in that it comprises at least one sensor, comprising respective temperature sensors for detecting the temperatures of the heat transfer medium at the inlet and / or outlet of the fluidP3512PC00 Subsequent Application37 line of the air-liquid heat exchanger (5) and / or the temperatures of the air at the inlet and / or outlet of the air-liquid heat exchanger (5), wherein the temperature values are provided to at least the local control unit (20) for processing for the regulation and / or control of the at least one actuator.

20. Window module according to claim 18 or 19, characterized in that the local control unit (20) comprises an interface at which it receives at least the actual room temperature value (Tist) and the given target room temperature value (Tsoii) from a central control unit (25) of the building or a part of the building.

21. Window module according to claim 20, characterized in that the local control unit (20) receives a control signal for the drive of the sun protection device (11) from the central control unit (25) at the interface.

22. Cooling and heating system for buildings with at least one window module according to one of claims 1 to 21, and with a device which is adapted to transport the heat transfer medium in at least one circuit from a respective first temperature level to a respective second temperature level.

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