EP1907762B1 - Air cooling and air dehumidifying module comprising capillary tube mats and method of using it - Google Patents

Abstract

The invention relates to a method of operating the air cooling and air dehumidifying module in combination with cooling ceilings or suspended cooling panels. Such solution serves for the decentralized cooling of rooms and for dehumidifying the air in a room.

Description

The invention relates to an air cooling and dehumidification module with a heat transfer element made of plastic capillary tube mats, which are formed into a compact package with a nearly parallelepipedal outer shape which cools and dehumidifies the cold air flow in the capillary tubes through the mat pack guided air flow. Moreover, the invention relates to a method for operating the air cooling and dehumidifying module in combination with a cooling ceiling. Such a solution is used for decentralized room cooling and dehumidification of the room air.

Compact heat exchanger water / air are usually made of metal, with aluminum and copper are preferred because of the high thermal conductivity. These materials are expensive, the processing cost is high and in most applications, especially in condensate, it often comes to corrosion.

In order to avoid the mentioned disadvantages, it was recognized that plastic capillary tube mats are very suitable as a heat transfer surface. You will find a variety of uses, for example, for the design of cooling and electric blankets, cooling sails, etc., which also form space boundary surfaces. The heat transfer takes place by heat conduction, convection and radiation. It is caused by these constructions, a room cooling, an intensive air cooling can and should not be achieved with it.

For the specific application of convective air cooling is known ( DE 198 06 207 C2 ) that capillary tube mats are arranged in a shaft, mainly flat, wherein the air flow between two openings with vertical spacing due to the density differences of the air in the shaft and in the room is formed. This also results in the term silent cooling. The heat exchanger works only when appropriate large vertical shaft height, the air flow is relatively small and thus limited performance.

Next is known ( DE 198 31 918 C2 ), that with similar structure as before (zu DE 198 06 207 C2 ) described the upper shaft opening is connected to the outside air and thus the air quality in the room is improved by tempered fresh air supply.

Also known is a plastic capillary tube mat for cooling and heating of rooms and / or water baths ( DE 197 51 883 C2 ), which includes, among other things, a spirally wound plastic capillary tube mat. Characteristic of this construction is a film arranged between the capillary tube mats with projections (elevations), whereby channels are formed. While a stream of material is flowing in the capillary tube mat, the second stream is passed through the channels formed by the film. From a hydraulic point of view, the high pressure loss caused by the flow resistance on the film is particularly disadvantageous. From a thermodynamic point of view, several disadvantages arise for the spirally wound solution. The film partly rests against the capillary tubes, so that they are not lapped freely, which reduces the external heat transfer coefficient. In the arrangement of a capillary tube mat with a catchy liquid flow creates a cross-countercurrent guide with low countercurrent due to the axially guided secondary flow. If multiple passes are selected, the pressure loss in the capillary tube mat increases sharply. The temperature of the outside material flow is not the same across the cross section of the heat exchanger, which may be particularly detrimental to the outlet.

The aforementioned disadvantages are avoided by the solution DPMA 103 13 384.4 (European application number 03016203.6), which is characterized by spirally arranged plastic capillary tube mats with radial air passage. However, a disadvantage is the large space requirement due to the cylindrical heat exchanger geometry, so that the use for air conditioning purposes in office and living spaces is limited.

The described, known solutions are regulated in practical use according to the room temperature, so that the room air humidity without active control option adjusts.

• Eine große Oberfläche soll auf engstem Raum erreicht werden.
• Das Wärmeübertragerelement ist in den äußeren Abmessungen so zu gestalten, dass der Einbau in Geräte und/oder baulich verfügbare Räume - beispielsweise in Deckenhohlräumen über Kühldecken - möglich wird.
• Die Konstruktion des Moduls und speziell des Wärmeübertragerelementes muss eine gute Wartung und auch den leichten Austausch des Wärmeübertragerelementes zulassen.
• Der Einsatz von korrosions- und inkrustationsfreiem Material für die Wärmeübertragerfläche ist anzustreben.
• Es ist eine thermodynamisch günstige Stromführung zu realisieren.
• Durch einen hohen konvektiven Wärmeübergang an der Oberfläche des Wärmeübertragerelementes soll eine intensive Luftkühlung und Luftentfeuchtung erreicht werden.
• Eine Leistungsregelung nach der Raumtemperatur oder nach der Raumluftfeuchte muss verwirklichbar sein.
• Im Betriebsverbund des Luftkühl- und Luftentfeuchtungsmoduls mit einer Kühldecke oder mit anderen Kühlflächen im Raum sollen eine aktive Regelung der Raumtemperatur und gleichzeitig auch der Raumluftfeuchte möglich werden.

The invention has for its object to meet the objectives described below for the air cooling and dehumidification module:

• A large surface should be achieved in a confined space.
• The heat transfer element is to be designed in the outer dimensions so that the installation in equipment and / or structurally available spaces - for example in ceiling cavities on cooling ceilings - is possible.
• The construction of the module and especially of the heat transfer element must allow good maintenance and also easy replacement of the heat transfer element.
• The use of corrosion- and incrustation-free material for the heat exchanger surface should be aimed for.
• It is a thermodynamically favorable power supply to realize.
• By a high convective heat transfer at the surface of the heat transfer element intensive air cooling and dehumidification is to be achieved.
• A power control according to the room temperature or the room air humidity must be achievable.
• In the operating system of the air cooling and dehumidifying module with a cooling ceiling or with other cooling surfaces in the room, an active regulation of the room temperature and at the same time also the room air humidity should be possible.

The stated object is achieved by the features of claims 1 and 26. The use of corrosion- and incrustation-free material for the heat exchanger surface is achieved by using plastic capillary tube mats given. A good convective heat transfer at the heat exchanger surface is achieved by the Queranströmung the capillary tubes due to the small thermodynamic Überströmlänge, due to the small diameter of the capillary tubes (usually less than 6 mm), and by the flow rate of the compact mat package. The otherwise commonly used in heat exchangers rib arrangements on the heat exchanger surfaces can be omitted, creating a good cleaning option. A large surface area in a confined space is achieved by the compact folding and / or winding technology so that the outer geometry of the package is close to a cuboid. This fact provides ideal conditions for use in devices, in structurally confined spaces, such as in ceiling cavities, and for the interchangeability of the heat transfer element.

The permanent shaping of the mat package can also be achieved by sole and / or additional use of the memory effect - for example by a thermal pretreatment.

Advantageous for the thermal efficiency is to make the air flow through the mat package so that it takes place mainly in countercurrent to the water flow.

A special design and heat engineering advantage is the use of mat packages with a core area that is identical to the pressure chamber for air distribution, since this solution occupies a particularly small space and the thermodynamically favorable countercurrent is realized a priori.

Further advantageous embodiments of the air cooling and air dehumidification module are the arrangement of air distribution systems in the pressure chamber, the use of displaceable air inlet nozzle in the pressure chamber and the housing design, which conveys the targeted air supply into the room as a function of the module assembly in the room. Thus, for example, formed by certain Perforationsmuster in the housing and by an air flow rectifier a source air passage or by cultivation of Air outlet elements in slot shape a rectangular free jet or a high turbulence air flow, for example by means of twist air passage, are generated.

Also advantageous is the combination of the aforementioned installations for air intake, air distribution or the air passage with facilities for air filtration.

The horizontal installation of the mat package with core area and its use as a pressure chamber opens the possibility for an extreme flat construction, which is particularly suitable for installation in the ceiling cavity, z. B. on cooling ceilings or sails, is suitable.

An advantageous development is the renunciation of a complete housing, wherein when using mat packages with usable core area as the pressure chamber only end plates of the core area find application, wherein at least one end plate is configured with an air feed opening.

The uniform conditioning of the air flow rate as it passes through the mat package is promoted by the incorporation of sealing bodies at the lateral ends of the mat packages to avoid or reduce bypass airflows.

For large pressure chambers or those with a geometrically strong one-sided expansion and / or for stepwise power control of the module, it is advantageous to install several fans and / or fittings that carry the air duct and steering.

A further improvement of the air flow distribution in the room to be conditioned can be achieved by wrapping the mat package with a film with adapted perforation or a suitable fabric.

A special way to increase performance, ie, for air cooling and - dehumidification, causes the use of several, in the air flow successively arranged mat packages, consisting of folded and / or wound plastic capillary tube mats, which are connected in countercurrent on the water side. To further increase performance, several cold water entries in the successive mat packages are useful.

A further embodiment is given by the fact that in the pressure chamber partially or exclusively outside air is passed, whereby the hygienically necessary outside air volume flow also undergoes a change in temperature and / or humidity.

To improve the heat-physiological conditions for the room users, it may be useful to temper certain room surfaces specifically, for example, to cool warm window or ceiling surfaces. For this purpose, the modules according to the invention are to be arranged so that, if necessary, using the Coanda effect, an intensive air flow takes place along the plate, wall, etc. to be tempered.

In addition, the air cooling and dehumidification module can be used in times of existing space heating requirements by applying heating water so that the space heating is supported or completely taken over.

The power control of the modules can be carried out according to all known methods and their combinations (change of the water inlet temperature, change of the water flow, change of the air volume flow eg through speed control, shutdown of individual fans, use of gravity, etc.).

Efficiency increasing with respect to the primary energy use, the process is further developed by the air cooling and dehumidification module in the design case, a low chilled water temperature - which causes the dehumidification by condensation of water vapor in the air task - and for the cooling ceiling as high as possible cold water temperature is used, so that the room cooling with a low Exergiestrom - for example, by a high proportion of environmental energy - takes place.

Special further developments serve the purposeful and space-saving use of the air cooling and dehumidifying modules in connection with the different types of cooling ceilings. So it is expedient for open cooling ceilings and cooling sails, the room air directly under the ceiling, d. H. above the cooling surface.

When installing the invention in large rooms or in individual rooms with approximately the same time cooling load history, the formation of control zones for a group of air cooling and Luftentfeuchtungsmoduln in conjunction with the associated cooling ceilings and / or cooling sails makes sense. In accordance with the local extent of the control zones, it is expedient to determine the controlled variables room temperature and ambient air humidity as average values from a plurality of measured values.

An advantageous solution of the power adjustment can also be a time control, for example, in anticipation of expected large load changes.

To save energy, the development of the method is so useful that between the switching stages of the scheme, an inactive area - a so-called zero energy band - is located, so that within fixed limits no space cooling and dehumidification occurs or is deliberately omitted one of these activities.

To simplify the control, it is also possible to control only the room temperature and operate the air dehumidification passively, so that the room humidity oscillates freely in certain areas according to a prediction of the moisture loads and the dehumidification performance that occurs.

Particularly advantageous for the conservation of energy resources is a regulation that the target function of the minimum Exergyeinsatzes when implemented thermo-physiological optimal room conditions follows. This can be effected, for example, by a microcomputer, which prefers the use of energy at as near a room-near water temperature and optimizes the power distribution between the air cooling and dehumidification module and the cooling ceiling or the cooling sail.

Furthermore, the water-side series connection of air cooling and Luftentfeuchtungsmodul and the cooling ceiling or the cooling sail can be useful because the cold water low temperature dehumidification in the module is effected and the higher return temperature from the module serves as a flow for the cooling ceiling or the cooling sail. With careful performance tuning, which is determined by the module and ceiling size, the condensation on the room cooling surfaces can be avoided.

The invention will be explained in more detail with reference to embodiments with drawings.

• Fig. 1 schematische Querschnitte durch das Mattenpaket, das aus einer oder mehreren Kunststoff-Kapillarrohrmatten durch eine Falt- und/oder Wickeltechnologie geformt ist, sodass eine äußere quaderähnliche Geometrie entsteht;
• Fig. 2 unterschiedliche schematische Querschnitte des Luftkühl- und Luftentfeuchtungsmoduls mit speziellen Anordnungen der Mattenpakete und des Druckraumes;
• Fig. 3 schematische Darstellung der wasserseitigen Hintereinanderschaltung der Mattenpakete innerhalb des Luftkühl- und Luftentfeuchtungsmoduls zur Erzeugung einer thermodynamischen Stromführung mit einem hohen Gegenstromanteil;
• Fig. 4 schematischer Vertikalschnitt durch ein Luftkühl- und Luftentfeuchtungsmodul mit einem Mattenpaket mit Kernbereich, der als Druckraum genutzt wird, und Führung des Luft- und Wasserstromes im Gegenstrom;
• Fig. 5 schematischer Längsschnitt zu Fig. 4
• Fig. 6 schematischer Vertikalschnitt durch ein Luftkühl- und Luftentfeuchtungsmodul mit einem Mattenpaket mit Kernbereich, das zur Reduzierung der Einbauhöhe horizontal angeordnet ist;
• Fig. 7 schematischer Längsschnitt zu Fig. 6 mit beispielhafter Darstellung des Einsatzes von Abdichtkörpern;
• Fig. 8 schematischer Längsschnitt durch ein Luftkühl- und Luftentfeuchtungsmodul mit einem Mattenpaket mit Kernbereich ohne komplettes Gehäuse, jedoch mit seitlichen Abschlussplatten des Mattenpaketes und der Besonderheit einer zweiseitigen Luftzuführung in axialer Richtung;
• Fig. 9 Ausschnitt aus einer schematischen Längsschnittdarstellung durch ein Luftkühl- und Luftentfeuchtungsmodul mit der Raumluftentnahme durch einen Lüfter von unten;
• Fig. 10 Ausschnitt aus einer schematischen Längsschnittdarstellung durch ein Luftkühl- und Luftentfeuchtungsmodul mit der Raumluftentnahme durch einen Lüfter von oben und konstruktiven Einbauten zur druckverlustarmen Luftlenkung;
• Fig. 11 schematische Darstellung zur Anordnung von Luftkühl- und Luftentfeuchtungsmoduln sowie einer geschlossenen Kühldecke mit den Systemen zur Kaltwasserversorgung und Kennzeichnung des Regelungsprinzips;
• Fig. 12 schematische Darstellung eines Luftkühl- und Luftentfeuchtungsmoduls, dem wasserseitig ein Kühlsegel nachgeschaltet ist, wobei die Leistungsregelung nach der Raumtemperatur erfolgt (Variante X kann durch Variante Y ersetzt werden);
• Fig. 13 schematische Darstellung eines Luftkühl- und Luftentfeuchtungsmoduls, dem wasserseitig ein Kühlsegel nachgeschaltet ist, wobei eine Leistungsregelung nach der Raumtemperatur und der maximal zulässigen Raumluftfeuchte erfolgt;
• Fig. 14 schematische Darstellung zur Anordnung von Luftkühl- und Luftentfeuchtungsmoduln in Verbindung mit einer offenen Kühldecke und der Raumluftentnahme aus dem Deckenhohlraum;
• Fig. 15 schematische Darstellung zur Anordnung des Luftkühl- und Luftentfeuchtungsmoduls in Verbindung mit einem Kühlsegel und der Raumluftentnahme unterhalb des Kühlsegels;
• Fig. 16 schematische Darstellung zur Anordnung des Luftkühl- und Luftentfeuchtungsmoduls in Verbindung mit einem aktiven und einem passiven Kühlsegel und der Raumluftentnahme aus dem Deckenhohlraum;
• Fig. 17 schematische Darstellung zur Anordnung des Luftkühl- und Luftentfeuchtungsmoduls in Verbindung mit einem Kühlsegel und der Raumluftentnahme aus dem oberen Deckenhohlraum und der Lufteinbringung über dem Kühlsegel;
• Fig. 18 schematische Darstellung zur Anordnung eines Luftkühl- und Luftentfeuchtungsmoduls zur direkten Raumluftkonditionierung und eines weiteren Luftkühl- und Luftentfeuchtungsmoduls, das mit Außenluftzufuhr arbeitet.

Show it:

• Fig. 1 schematic cross sections through the mat package, which is formed from one or more plastic capillary tube mats by a folding and / or winding technology, so that an outer parallelepiped-like geometry is formed;
• Fig. 2 different schematic cross-sections of the air cooling and Luftentfeuchtungsmoduls with special arrangements of the mat packages and the pressure chamber;
• Fig. 3 schematic representation of the water-side series connection of the mat packets within the air cooling and Luftentfeuchtungsmoduls for generating a thermodynamic current flow with a high counter-current component;
• Fig. 4 schematic vertical section through an air cooling and Luftentfeuchtungsmodul with a mat package with core area, which is used as a pressure chamber, and guiding the air and water flow in countercurrent;
• Fig. 5 schematic longitudinal section to Fig. 4
• Fig. 6 schematic vertical section through an air cooling and Luftentfeuchtungsmodul with a mat package with core area, which is arranged horizontally to reduce the installation height;
• Fig. 7 schematic longitudinal section to Fig. 6 with an exemplary representation of the use of Abdichtkörpern;
• Fig. 8 schematic longitudinal section through an air cooling and Luftentfeuchtungsmodul with a mat package with core area without a complete housing, but with side end plates of the mat package and the peculiarity of a two-sided air supply in the axial direction;
• Fig. 9 Section of a schematic longitudinal section through an air cooling and dehumidification module with the air removal by a fan from below;
• Fig. 10 Section of a schematic longitudinal section through an air cooling and air dehumidification module with the room air extraction by a fan from above and constructive installations for low pressure loss air duct control;
• Fig. 11 schematic representation of the arrangement of air cooling and Luftentfeuchtungsmoduln and a closed cooling ceiling with the systems for cold water supply and labeling of the regulatory principle;
• Fig. 12 schematic representation of an air cooling and Luftentfeuchtungsmoduls, downstream of the water side, a cooling sail, the power control is based on the room temperature (variant X can be replaced by variant Y);
• Fig. 13 schematic representation of an air cooling and air dehumidification module, the water side, a cooling sail is followed, with a power control according to the room temperature and the maximum permissible room humidity takes place;
• Fig. 14 schematic representation of the arrangement of air cooling and Luftentfeuchtungsmoduln in conjunction with an open cooling ceiling and the air removal from the ceiling cavity;
• Fig. 15 schematic representation of the arrangement of the air cooling and Luftentfeuchtungsmoduls in conjunction with a cooling sail and the air removal below the cooling sail;
• Fig. 16 schematic representation of the arrangement of the air cooling and Luftentfeuchtungsmoduls in conjunction with an active and a passive cooling sail and the air removal from the ceiling cavity;
• Fig. 17 schematic representation of the arrangement of the air cooling and Luftentfeuchtungsmoduls in conjunction with a cooling sail and the removal of air from the upper ceiling cavity and the introduction of air over the cooling sail;
• Fig. 18 schematic representation of the arrangement of an air cooling and dehumidification module for direct room air conditioning and another air cooling and Luftentfeuchtungsmoduls that works with outdoor air supply.

Embodiment 1

To Fig. 1 The compact mat package made of plastic capillary tube mats is brought by folding to Form 1 or by winding to Form 2 or 3, so that the outer dimensions have almost the geometry of a cuboid.

Embodiment 2:

According to Fig. 2 the mat packages 1, 2 or 3 become after Fig. 1 arranged in a housing 11 so that a pressure chamber 12 is formed, from which the air volume flow 10 passes through the mat packets in the space to be conditioned 9. The capillary tube mats, which form the mat package, are supplied with cold water, whereby the air flow 10 is cooled and also dehumidifies (dried) falls below the dew point. Failure condensate is collected in the condensate collection tank 13, from there it is removed by known methods, for example by pumping. In the pressure chamber 12, there is an air pressure higher than that in the space 9. This is achieved by the action of a fan 17, which removes the air flow 19 from the space 9 and conveys it into the pressure chamber 12.

Embodiment 3

Fig. 3 shows a possibility for thermodynamic improvement of the operating characteristics by several mat packets, for example of the type of construction 2, are connected in series in the air flow 10 and to the cold water is passed in countercurrent. For this purpose, the flow 14 are outboard, the return 14a inside and the cold water connection lines 16 accordingly Fig. 3 arranged.

Embodiment 4

To 4 and FIG. 5 the use of a mat package according to construction type 3 offers the possibility to use the core area 6 as a pressure space 12. This variant has the advantage that in the cold water flow from outside to inside, according to the illustrated connections 14 and 15, there is always the thermodynamically optimal countercurrent. In addition, a very compact design for the module is achieved.

Embodiment 5:

Fig. 6 and Fig. 7 compared to the embodiment 4, the horizontal installation of the mat package according to construction type 3. Due to the low height of the air cooling and air dehumidification module is particularly suitable for installation in ceiling cavities, for example in conjunction with cooling ceilings or cooling sails. The air volume flow 10 can escape into the room on three sides, the condensate collecting tank 13 extends at least beyond the dimension 5. A modification is possible in that the condensate collecting tank is made smaller, for example degenerate into a gutter, and the dripping condensate on funnel-shaped arranged guide surfaces is initiated. In Fig. 7 Furthermore, the exemplary installation of sealing bodies 21 for avoiding leakage currents of untreated air is also shown. Their installation can also be useful when mat packages collide laterally.

Embodiment 6:

Fig. 8 to Fig. 10 The air flow 19 from the space 9 can in principle occur on all sides of the housing, in order subsequently to be conveyed into the pressure chamber 12. The design of the fan 17 may correspond to all known variants, to be preferred are roller and axial fans. Roller fans offer the advantage that they fill the pressure chamber with the air volume flow over a wide inlet area. The Fig. 8 shows a solution with two fans 19. This variant ensures a uniform loading of the mat package with the air flow 10 with a large package length 20. In addition, the shutdown of a fan for gradual power control can be included. For this reason, the use of additional fan 17 may be useful. Fig. 8 shows the direct attachment, for example by flanging, the fan to the end plate 18a. Fig. 9 represents the installation of the fan 17 in the housing 11. In Fig. 10 is presented the pressure loss poorer solution, which is effected by internals to the air flow. These fittings can be connected to the housing 11, the fan 17 or as shown with the end plate 18b, for example, force, positive and / or cohesive.

Embodiment 7:

Fig. 11 shows a basic possibility of the arrangement of air cooling and Luftentfeuchtungsmodul 22 in conjunction with a cooling ceiling 24, and their cold water connections 14, 15, 14a, 15a and the regulation regime. It is generally advantageous from an exergetic point of view if the air cooling and dehumidifying module 22 is connected to a low temperature cold water network which causes dew point on the capillary tube surface to condense the water vapor out of the air and the chilled ceiling 24 is connected to a higher temperature chilled water network. The cooling ceiling operation can then take place during a large period of the year, for example, with environmental energy, which is taken over a cooling tower or a geothermal collector originate. The regulation should preferably be carried out by means of two control circuits. The air humidity control is carried out by the air cooling and dehumidifying modules 22 and the room temperature control by the cooling ceiling 24. The parts of the control circuits are: humidity sensor 27, humidity controller (Hygrostat) 29, temperature sensor 26, temperature controller (thermostat) 28. The actuators in the control circuits are in the illustrated embodiment, control valves in the cold water connections. In general, other known variants are possible, for example, the adjustment of the temperatures or in the case of power control of the module 22 changing the air flow through the mat package, etc. The separately acting humidity and temperature control circuits ensure compliance with a given room condition. This can be achieved with simple means a very high quality of heat physiology in the room 9, since the benefits of regulated indoor humidity and the comfort-promoting, radiation-intensive heat absorption are combined by the cooling ceiling. With regard to the control circuits of course there is also the possibility to link their work together, for example by the intended change of one controller is displayed to the other, for. B. in the form of a known disturbance variable, or that both controllers are united in, for example, a microcomputer and have a linked control strategy.

Embodiment 8:

Fig. 12 shows a control engineering simplification, such that the air cooling and dehumidification module 22 and the cooling ceiling, shown here as a cooling sail 25, water side connected in series and that only a temperature control by means of sensor 26 and controller 28 takes place. Assuming accurate load and power detection and appropriate dimensioning of the module 22 and the cooling sail 25, the room temperature can be accurately maintained and the room humidity in a range with predetermined limits. If the two components are correctly matched, it is ensured that condensation does not develop on the cooling ceiling or on the cooling sail, ie the entire system is intrinsically safe in this regard. The use of the circuit variant Y instead of the variant X makes it possible to divert a portion or the entire water flow between the cold water outlet 15 from the module 22 and the cold water inlet 14a into the cooling sail 25. When using this variant, there is the advantage of a controlled power distribution for the module 22 and the cooling sail 25.

Embodiment 9:

Another special solution, which is advantageous in many applications, shows Fig. 13 , The air cooling and air dehumidification module 22 and the cooling ceiling, shown here as cooling sail 25, are connected in series on the water side and are acted upon by the same water flow, the room temperature control affects the water flow rate, but the dehumidification is still within limits, as an actuator 30, for example a Venetian blind, which influences the air volume flow through the mat package. This variant is z. B. useful if only limits the maximum humidity and a maximum of the cooling capacity of the cooling ceiling should be provided. As a signal generator can also serve a humidity sensor on the cooling ceiling or on the cooling sail instead of the room humidity.

Embodiment 10:

Fig. 14 demonstrates an advantageous installation option of air cooling and Luftentfeuchtungsmoduln 22 in conjunction with an open cooling ceiling 24a, so that the ceiling cavity is used optimally. The removal of the air volume flow 19 from the room takes place in the uppermost region of the ceiling cavity. This is advantageous because warm, moist air has the lowest density and collects in the upper space area. Thus, the largest temperature and partial pressure differences on the surface of the plastic capillary tube mats act and promote the cooling and dehumidifying performance. The supply air volume flow 23 of cooled and dehumidified air can be routed near the wall free of draft for the room users.

Embodiment 11:

FIGS. 15 to 17 show advantageous ways how an air cooling and dehumidification module 22 should be arranged thermally favorable and adhering to strict comfort criteria in conjunction with a cooling sail 25. According to Fig. 15 takes the air cooling and air dehumidification module 22, the room air volume flow 19 at a distance of for example 50 to 100 mm below the cooling sail 25 so that the rising warm air is not pre-cooled by the convective effect of the cooling surface 25. The supply air 23 enters the room in Interspace to the ceiling above the cooling sail 25 out, so that the air flow takes place in the space outside of the area covered by the cooling sail. The main living areas, such as work at desks, are usually under the cooling sail to feel the heat-physiological beneficial effect of radiation cooling, whereby the lateral outflow of cold air does not interfere. In addition, the architectural shape of the cooling sail can be made so that wall-near outflow areas of the cold air arise. These air streams are then distributed in the floor area analogous to the proven source air supply.

Fig. 16 shows the room air intake 19 in the upper room area and the exit from the air cooling and air dehumidification module 22 takes place laterally z. B. by means of slot nozzles so that a passive cooling sail 25a - using the Coanda effect - is blown. As a result, the surface 25a undergoes cooling, as a result of which secondary radiation radiation cooling for the room is created.

Fig. 17 shows a structurally particularly easy to implement arrangement of the air cooling and Luftentfeuchtungsmoduls 22 directly above the cooling sail 25. The air volume flow 19 is removed in the upper space and the conditioned supply air stream 23 blown directly above the cooling sail 25, the advantageous possibilities of further air flow according to the description to Fig. 15 to use.

Embodiment 12:

Fig. 18 shows in addition to the embodiment 7 with reference to Fig. 11 , the advantageous possibility of the outside air supply 19a and their air conditioning in an air cooling and air dehumidification module 22. Thus, a hygienically conditioned outside air volume flow, the size of which is defined as a function of the number of room users or the volume of space, are introduced. It is advantageous that this air volume flow undergoes a change in temperature and humidity and thus largely adapted to the comfortable room air condition enters the room as supply air stream 23. In addition, for example, another air cooling and air dehumidification module 22 operate in the known recirculation mode. A further education of the method takes into account, for example, a control of the outside air volume flow 19a as a function of the time of day, the room occupancy or the indoor air quality.

LIST OF REFERENCE NUMBERS

1

dimensionally stable mat package formed by layers

2

dimensionally stable mat package formed by parallel winding

3

dimensionally stable mat package formed by parallel winding with open core area

4

Width of the mat package

5

Height of the mat package

6

Core area of the mat package

7

Capillary tube of the plastic capillary tube mat

8th

Distribution or collection pipe (so-called strains) of the plastic capillary tube mat

9

Room whose air is supplied with cooled and dehumidified air
9a Outside air volume flow (atmosphere) to fill the pressure chamber

10

Air flow through the mat package

11

casing

12

Pressure chamber (air with a pressure greater than in 9)

13

Drip container

14

Cold water supply for the air cooling and dehumidification module
14a Cold water supply for the cooling ceiling or the cooling sail

15

Cold water return from the air cooling and dehumidification module
15a Cold water return from the cooling ceiling or the cooling sail

16

Cold water connection line

17

Fan for conveying air into the pressure chamber 12 or the core area 6

18

End plate of the mat package

18a

End plate of the mat package with air supply opening

18b

End plate of the mat package with air supply opening and internals for low pressure loss air flow

19

Air volume flow from the room to fill the pressure chamber
19a External air volume flow (atmosphere) to fill the pressure chamber

20

Length of the mat package

21

Sealing body for avoiding leakage currents of untreated air

22

Air cooling and dehumidification module

23

cooled and dehumidified supply air flow into the room

24

closed cooling ceiling
24a open cooling ceiling

25

cooling panels
25a cooling sail with passive function

26

Temperature sensor in the room

27

Humidity sensor in the room

28

Controller for the cooling capacity as a function of the room temperature (thermostat)

29

Controller for the dehumidification performance as a function of the room humidity (hygrostat)

30

Adjustment device for influencing the air volume flow through the mat package

Claims (37)

1. An air cooling and air dehumidifying module (22), comprising at least one ventilator (17) for room air conditioning made of plastic capillary tube mats consisting of distributing and collecting tubes comprising flexible capillary tubes running between them which are charged with water at a selectable temperature,
   characterised in that
   the capillary tube mats are shaped into a compact, dimensionally stable package (1; 2; 3) by layer formation (1), by winding (2) without an increased internal space or by winding (3) with a defined core region (6), such that a cuboid-like body results, wherein one or more mat packages (1; 2; 3) are arranged in a housing (11) comprising openings, such that a pressure space (12) is created, to which an air flow (19) which is to be treated is continuously supplied by means of ventilators (17) from a room (9) which is to be air-conditioned, such that an air flow (10) out of or into the pressure space (12), through the mat package or packages, is created due to the difference in pressure existing between the pressure space (12) and the room (9).
2. The air cooling and air dehumidifying module according to claim 1, characterised in that the flow of air through the mat package (1; 2; 3) is generated by a positive pressure in the pressure chamber (12) relative to the air pressure in the room (9), wherein the positive pressure is created by connecting the ventilator (17) on the pressure side.
3. The air cooling and air dehumidifying module according to claim 1, characterised in that the height (5) of the cuboid-like body is at least twice its width (4).
4. The air cooling and air dehumidifying module according to claims 1 to 3, characterised in that sealing bodies (21) are used to seal the pressure space (12), in order to avoid bypass flows of untreated air.
5. The air cooling and air dehumidifying module according to claims 1 to 4, characterised in that the openings in the housing (11) are for example slits, holes or perforations.
6. The air cooling and air dehumidifying module according to the preceding claims, characterised in that convective heat transfer occurs as a result of the contact between an air flow (10) and a capillary tube surface (7), and air drying by the formation of condensation water also occurs when the temperature of the water in the capillary tube mats is low by dropping below the dew point on the capillary tube surface (7).
7. The air cooling and air dehumidifying module for room air conditioning according to the preceding claims, characterised in that the permanent dimensional stability of the mat package (1; 2; 3) is achieved by commercially available plastic binders or by using the memory effect, for example by thermal pre-treatment.
8. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that in order to increase the efficiency of the heat exchanger and of dehumidification, a number of mat packages (1; 2; 3) are connected sequentially or in parallel in the same air flow (10), and the water flow is guided by arranging a cold water input (14), a cold water connecting conduit (16) and a cold water output (15) in the reverse flow.
9. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that the mat package (3) with a defined core region (6) is positioned in the housing (11) such that the mat-free core region (6) assumes the function of the pressure space (12) and is filled with room air (19) by means of ventilators (17), and in that the air flow (10) into the room (9), which is distributed to a number of sides, contacts the capillary tube surface (7) such that when the water input (14) is on the outside and the water output (15) is on the inside, the thermodynamically most favourable operating characteristic - the reverse flow - is realised.
10. The air cooling and air dehumidifying module for room air conditioning according to any one of claims 1 to 4, characterised in that the pressure space (12), which can be identical to the core region (6), has fittings for distributing air which ensure a uniform or - depending on the conditions of use - targeted air output into the room (9).
11. The air cooling and air dehumidifying module for room air conditioning according to any one of claims 1 to 5, characterised in that the air input of the room air (9) can be flexibly structured depending on the arrangement of the module in the room, which is preferably to be effected by arranging flanges which can be plugged into different sockets and/or by using roller ventilators with rotatable housings.
12. The air cooling and air dehumidifying module for room air conditioning according to any one of claims 1 to 6, characterised in that on the surfaces of the air throughput into the room, the housing (11) is shaped into special air aperture openings or connected to air aperture openings of a known design, wherein perforated metal sheet arrays, slit apertures or adjustable lamellar metal sheets represent preferred solutions.
13. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that the mat packages (3) with a defined core region (6), which can simultaneously form the pressure space, are installed horizontally.
14. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that when the mat packages (3) with a defined core region (6) are used, the core region is sealed by a closed end plate (18) and, oppositely, by an end plate (18a) comprising an air supply opening.
15. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that the pressure space (12) is filled with room air flows (19) by a number of ventilators (17).
16. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that moulded parts for conducting and directing the air flow are installed between the ventilator or ventilators (17) and the pressure space (12).
17. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that the mat package (1; 2; 3) is enveloped by a perforated film, the perforation of which forms the air throughput opening.
18. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that a constant exterior air flow which can be regulated or controlled is supplied to the pressure space (12).
19. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that the air throughput to the room (9) is formed such that surfaces, preferably windows or passive cooling sails (15a), are blown against such that their surface temperature is lowered.
20. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that one or more air filters and/or air humidifiers are integrated in the air path through the air cooling and air dehumidifying module.
21. The air cooling and air dehumidifying module for room air conditioning according to any one of claims 1 to 16, characterised in that the power rating of the air cooling and air dehumidifying module (22) is regulated by a variable temperature of the water, a variable water flow and/or a variable air volume flow through the mat package (1; 2; 3).
22. The air cooling and air dehumidifying module for room air conditioning according to any one of claims 1 to 16, characterised in that the flow of air through the mat package (1; 2; 3) is generated by a negative pressure in the pressure chamber (12) relative to the air pressure in the room (9), wherein the negative pressure is created by connecting the ventilator (17) on the suction side.
23. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that the mat package or mat packages (1; 2; 3) is/are arranged in the housing (11) such that the flow of air through the mat package or mat packages (1; 2; 3) is generated as a result of differences in density between the cooled air and the room air, at a reduced power rating.
24. The air cooling and air dehumidifying module for room air conditioning according to any one of the preceding claims, characterised in that the module (22) can also assume a heating function by using temperatures of the water which are above the room air temperature.
25. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 1 to 24, characterised in that the air cooling and air dehumidifying module (22), irrespective of its spatial location, and the cooling ceiling, irrespective of its design (24; 24a; 25), form a control engineering unit for air-conditioning the room (9) by regulating the power rating of the air cooling and air dehumidifying module such that the nominal value of the room air humidity is maintained, and in that the power rating of the cooling ceiling is regulated such that the nominal value of the room temperature is guaranteed.
26. The use of an air cooling and air dehumidifying module for room air conditioning according to claim 25, characterised in that the air cooling and air dehumidifying module (22) and the cooling ceiling (24; 24a; 25) are supplied with cold water flows (14; 14a) which differ in their supply temperature, with the advantage of a low exergy input, wherein the water flow at the lower temperature charges the air cooling and air dehumidifying module (22).
27. The use of an air cooling and air dehumidifying module for room air conditioning according to claim 25 or 26, characterised in that an open cooling ceiling (24a) or a cooling sail (25) is used, and the air cooling and air dehumidifying module (22) draws the room air (19) from the intermediate space in the ceiling.
28. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 27, characterised in that the air cooling and air dehumidifying module (22) and the cooling ceiling (24; 24a) or the cooling sail (25) are structurally connected to each other and/or form a structural unit.
29. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 27, characterised in that the room temperature and/or room air humidity are regulated for a defined zone of a room or for a group of rooms.
30. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 29, characterised in that the control variables of room temperature and room air humidity are formed as arithmetic or weighted average values from the signals of a number of sensors.
31. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 30, characterised in that adapting the power rating of the air cooling and air dehumidifying module (22) and/or the cooling ceiling (24; 24a) and/or the cooling sail (25) is realised as a time control.
32. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 31, characterised in that the air cooling and air dehumidifying module (22) and/or the cooling ceiling (24; 24a) and/or the cooling sail (25) is operated in accordance with exceeding or dropping below predetermined temperature and/or humidity limiting values.
33. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 32, characterised in that the air cooling and air dehumidifying module (22) and/or the cooling ceiling (24; 24a) and/or the cooling sail (25) is operated and the power rating of the air cooling and air dehumidifying module (22) and/or the cooling ceiling (24; 24a) and/or the cooling sail (25) is regulated according to the primacy of maintaining the room temperature.
34. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 33, characterised in that the dehumidifying power rating of the air cooling and air dehumidifying module (22) is regulated or controlled according to the signal of one or more humidity sensors and/or dew point monitors which are installed in connection with the cooling ceiling (24; 24a) and/or the cooling sail (25), such that condensation on the cooling ceiling is avoided.
35. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 34, characterised in that the air cooling and air dehumidifying module (22) and/or the cooling ceiling (24; 24a) and/or the cooling sail (25) is operated and the power rating of the air cooling and air dehumidifying module (22) and/or the cooling ceiling (24; 24a) and/or the cooling sail (25) is regulated according to the target function of a minimum exergy input for optimum room air conditioning and/or thermal comfort.
36. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 35, characterised in that the cooling ceiling (24; 24a) and/or the cooling sail (25) is connected downstream of the air cooling and air dehumidifying module (22) on the water side, wherein the cold water feedback (15) from the air cooling and air dehumidifying module corresponds to the cold water supply (14a) for the cooling ceiling or the cooling sail.
37. The use of an air cooling and air dehumidifying module for room air conditioning according to any one of claims 25 to 36, characterised in that the air cooling and air dehumidifying module (22) operates in combination with other room cooling surfaces which can be regulated or controlled in terms of their power rating, for example planar room partitions or wall surfaces, in addition to or instead of cooling ceilings.

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