EP1149958A1 - Coating for the interior of a room to improve the hygrometric room climate and reduce the risk of mildew formations in rooms - Google Patents
Coating for the interior of a room to improve the hygrometric room climate and reduce the risk of mildew formations in rooms Download PDFInfo
- Publication number
- EP1149958A1 EP1149958A1 EP00108771A EP00108771A EP1149958A1 EP 1149958 A1 EP1149958 A1 EP 1149958A1 EP 00108771 A EP00108771 A EP 00108771A EP 00108771 A EP00108771 A EP 00108771A EP 1149958 A1 EP1149958 A1 EP 1149958A1
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- EP
- European Patent Office
- Prior art keywords
- risk
- improve
- reduce
- rooms
- moisture
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/625—Sheets or foils allowing passage of water vapor but impervious to liquid water; house wraps
Definitions
- the invention relates to the decoupling of humidity from the indoor air heated Spaces of their surrounding components to improve the hygric indoor climate and reducing the risk of mold formation as well as to reduce the heat losses, which with the Drying of components are connected.
- the average humidity is higher than the outside. This increased humidity can get into the rooms in various ways, for example due to anthropogenic moisture emissions, rainwater acting on external components and ventilation with temporarily higher outside humidity. Depending on the respective situation, a moisture balance is sought in the components and is also approximately achieved in the long term.
- the room air humidity is in a moisture equilibrium with the components due to the sorption, which, due to the large areas surrounding the room, determine the room air humidity due to the geometry. Observations show that the ambient air humidity is on average 2 to 3 g / m 3 above the outdoor air humidity due to the above-mentioned influences. This difference becomes smaller with decreasing room temperature and increases with increasing room temperature, ie the sorption mechanism ensures that the components are moistened when they cool down and are dried when heated.
- the room air When heating in transient heating mode, the room air is enriched with moisture due to the above-mentioned situation; large moisture emission areas with customary heatability are contrasted with small moisture collector areas with poor heatability.
- the moisture decoupling provides an advantage for the defrosting of components (pore defrosting).
- the coating according to the invention areas which are at risk of condensation, such as thermal bridges and less heated rooms in an apartment, are less exposed to moisture;
- the formation of mold is also better limited, which also leads to an improvement in indoor air quality. This makes a contribution to preventive health care and a lower air exchange rate is required, which also has an energetically favorable effect.
- the object of the invention is to produce the moisture decoupling with suitable coating materials without adversely affecting the indoor climate.
- This object is achieved in that porous water-containing components are provided with a moisture-regulating coating and thus the indoor climate is influenced favorably.
- the coating according to the invention has a large increase in sorption and a decrease in the diffusion coefficient, so that, in times when the ambient air is exposed to high levels of moisture, there is still a moisture limitation over the component surfaces.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Die Erfindung betrifft die Feuchteentkopplung der Raumluft beheizter Räume von deren umschließenden Bauteilen zur Verbesserung des hygrischen Raumklimas und Minderung des Risikos für Schimmelpilzbildung sowie zur Minderung der Wärmeverluste, welche mit der Trocknung von Bauteilen verbunden sind.The invention relates to the decoupling of humidity from the indoor air heated Spaces of their surrounding components to improve the hygric indoor climate and reducing the risk of mold formation as well as to reduce the heat losses, which with the Drying of components are connected.
In Räumen, welche unterschiedlich zur Umgebung temperiert und wechselnden Feuchtebelastungen ausgesetzt sind, ist durchschnittlich eine höhere Feuchte vorhanden, als außen. Diese erhöhte Feuchte kann auf verschiedene Arten in die Räume gelangen, z.B. durch anthropogene Feuchteemissionen, auf Außenbauteile einwirkendes Niederschlagswasser und Belüftung mit zeitweise höheren Außenluftfeuchten. Abhängig von der jeweiligen Situation wird in den Bauteilen ein Feuchtegleichgewicht angestrebt und langfristig auch näherungsweise erreicht. Die Raumluftfeuchte wiederum steht dabei durch die Sorption in einem Feuchtegleichgewicht mit den Bauteilen, die durch die großen raumumschließenden Flächen geometriebedingt die Raumluftfeuchte maßgeblich bestimmen. Beobachtungen zeigen, daß die Raumluftfeuchte infolge der o.g. Einflüsse im Mittel um 2 bis 3 g/m3 über der Außenluftfeuchte liegt. Diese Differenz wird mit abnehmender Raumtemperatur kleiner und steigt mit zunehmender Raumtemperatur, d.h. der Sorptionsmechanismus sorgt dafür, daß die Bauteile bei Abkühlung befeuchtet und bei Erwärmung getrocknet werden.In rooms which are at different temperatures and are exposed to changing moisture levels, the average humidity is higher than the outside. This increased humidity can get into the rooms in various ways, for example due to anthropogenic moisture emissions, rainwater acting on external components and ventilation with temporarily higher outside humidity. Depending on the respective situation, a moisture balance is sought in the components and is also approximately achieved in the long term. The room air humidity, in turn, is in a moisture equilibrium with the components due to the sorption, which, due to the large areas surrounding the room, determine the room air humidity due to the geometry. Observations show that the ambient air humidity is on average 2 to 3 g / m 3 above the outdoor air humidity due to the above-mentioned influences. This difference becomes smaller with decreasing room temperature and increases with increasing room temperature, ie the sorption mechanism ensures that the components are moistened when they cool down and are dried when heated.
Beim Anheizen im instationären Heizbetrieb wird durch den v.g. Sachverhalt bedingt die Raumluft mit Feuchte angereichert; hierbei stehen große Feuchteemissionsflächen mit üblicher Erwärmbarkeit kleinen Feuchtesammlerflächen mit schlechter Erwärmbarkeit gegenüber. Durch die Feuchteentkopplung ist somit für den Tauwasserschutz von Bauteilen (Porentauwasser) ein Vorteil gegeben. Bei instationärem Heizbetrieb werden durch die erfindungsgemäße Beschichtung tauwassergefährdete Bereiche, wie Wärmebrücken und geringer beheizte Räume einer Wohnung, weniger mit Feuchte beaufschlagt; infolge des verbesserten Tauwasserschutzes wird also auch die Bildung von Schimmelpilzen besser begrenzt, was auch zu einer Verbesserung der Raumluftqualität führt. Hierdurch wird ein Beitrag zur Gesundheitsvorsorge geleistet und eine geringere Luftwechselrate erforderlich, was zudem energetisch günstig wirkt. Mit der Verdunstung der Bauteilfeuchte wird der Raumluft nichtfühlbare Wärmeenergie zugeführt, die beim Heizbetrieb zu einer Vergrößerung der Lüftungswärmeverluste führt (Fortlüften der Latentwärme). Da Feuchte i.d.R. von den warmen zu den kalten Bereichen wandert, ist in Analogie zum Strahlungswärmeaustausch zwischen den Bauteilen, auch ein Feuchtewärmeaustausch gegeben, d.h. die Wärme wird mit der Feuchte vornehmlich über die Luftkonvektion von den Innenbauteilen zu den Außenbauteilen transportiert. Durch die Verdunstung wird auch die Wärmeträgheit der Bauteile erhöht, so daß bei instationärem Heizbetrieb das Anheizen weniger flink erfolgen kann. Infolge der größeren Wärmeträgheit der Bauteile durch die Feuchte wird eine bedarfsgerechte Beheizung von Räumen erschwert. Es ist Ziel der Erfindung, unter Verwendung von Beschichtungen die Raumluftfeuchte von der Bauteilfeuchte hinreichend zu entkoppeln, so daß die mit den Feuchteströmen verbundenen Nachteile gemindert werden.When heating in transient heating mode, the room air is enriched with moisture due to the above-mentioned situation; large moisture emission areas with customary heatability are contrasted with small moisture collector areas with poor heatability. The moisture decoupling provides an advantage for the defrosting of components (pore defrosting). In the case of unsteady heating operation, the coating according to the invention, areas which are at risk of condensation, such as thermal bridges and less heated rooms in an apartment, are less exposed to moisture; As a result of the improved condensation protection, the formation of mold is also better limited, which also leads to an improvement in indoor air quality. This makes a contribution to preventive health care and a lower air exchange rate is required, which also has an energetically favorable effect. With the evaporation of the component moisture, non-sensible thermal energy is added to the room air, which leads to an increase in ventilation heat losses during heating operation (ventilation of the latent heat). Since moisture usually migrates from the warm to the cold areas, there is also a moisture heat exchange in analogy to the radiant heat exchange between the components, i.e. the heat is transported with the moisture from the internal components to the external components primarily via air convection. The evaporation also increases the thermal inertia of the components, so that heating can take place less quickly in the case of unsteady heating operation. Due to the greater thermal inertia of the components due to the moisture, it is difficult to heat the rooms as required. It is the aim of the invention to adequately decouple the room air humidity from the component moisture using coatings, so that the disadvantages associated with the moisture flows are reduced.
Die bisherigen üblichen Betrachtungen zum Energiebedarf von Gebäuden ließen die v.g. Aspekte unbeachtet. Maßnahmen zur Beeinflussung sind bisher nicht vorgenommen worden. Bisherige Beschichtungen mit großem Diffusionswiderstand sind wegen ihrer Sorptionseigenschaften ungeeignet und führen zu einem "Plastiktütenklima".The previous considerations regarding the energy consumption of buildings let the v.g. Aspects disregarded. Influencing measures have not yet been made. Previous coatings with high diffusion resistance because of their sorption properties unsuitable and lead to a "plastic bag climate".
Die Aufgabe der Erfindung besteht nun darin, die Feuchteentkopplung mit geeigneten Beschichtungsmaterialien herzustellen, ohne das Raumklima nachteilig zu beeinflussen. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß poröse wasserhaltige Bauteile mit einer feuchteregulierenden Beschichtung versehen werden und so das Raumklima günstig beeinflußt wird. Die erfindungsgemäße Beschichtung hat mit zunehmender relativer Luftfeuchte eine große Zunahme der Sorption und eine Abnahme des Diffusionskoeffizienten, so daß in Zeiten mit großer Feuchtebelastung der Raumluft eine Feuchtebegrenzung über die Bauteiloberflächen weiterhin gegeben ist. Bei geringen Raumluftfeuchten in der Heizperiode, unter 50 %, ist die Regelung der Raumluftfeuchte mit der erfindungsgemäßen Beschichtung, welche dann eine geringere Sorption und auch eine größere Dampfdichtheit aufweist, bereits durch eine geringe Luftwechselrate möglich; bei diesen Bedingungen ist die absolute Außenluftfeuchte sehr gering, so daß die Raumluftfeuchte leicht gesenkt werden kann. Durch die Eigenschaften der erfindungsgemäßen Beschichtung ist auch eine bedarfsgerechte, energetisch günstige Stoßlüftung effektiv möglich, wodurch weitere Energieeinsparmöglichkeiten gegeben sind. Bei den bisher üblichen Bedingungen bestimmte die Sorption von Luftschadstoffen und Wasserdampf in den Bauteilen das "Schadstoffniveau" im Raum und mittels Stoßlüftung konnte dieses nur kurzzeitig verändert werden.The object of the invention is to produce the moisture decoupling with suitable coating materials without adversely affecting the indoor climate. This object is achieved in that porous water-containing components are provided with a moisture-regulating coating and thus the indoor climate is influenced favorably. With increasing relative air humidity, the coating according to the invention has a large increase in sorption and a decrease in the diffusion coefficient, so that, in times when the ambient air is exposed to high levels of moisture, there is still a moisture limitation over the component surfaces. In the case of low room air humidity in the heating period, below 50%, the regulation of the room air humidity with the coating according to the invention, which then has a lower sorption and also a higher vapor tightness, is already possible through a low air exchange rate; In these conditions, the absolute outside air humidity is very low, so that the room air humidity can easily be reduced. Due to the properties of the coating according to the invention, needs-based, energetically favorable shock ventilation is also effectively possible, which provides further energy saving possibilities. Under the usual conditions so far, the sorption of air pollutants and water vapor in the components determined the "pollutant level" in the room and this could only be changed for a short time by means of shock ventilation.
Vorversuche haben gezeigt, daß ein Raum, der durch eine Beschichtung der Firma Thermo Shield GmbH & CO. KG, Wackenbergstraße 78 - 82, 13156 Berlin, behandelt worden ist, wesentlich trockener war, als ein gleichartiger, aber unbehandelter Referenzraum; für den behandelten Raum zeigte sich auch eine flinkere Anheizbarkeit. Durch die besonderen Eigenschaften der v.g. Beschichtung, welche die Sorption und den Wasserdampfdiffusionswiderstand betreffen, ist eine besonders gute Eignung für die erfindungsgemäße Beschichtung gegeben. Hierbei ist die Beschichtung großflächig und in einer Mindestdicke von 200 µm aufzutragen.Preliminary tests have shown that a room is covered by a coating from Thermo Shield GmbH & CO. KG, Wackenbergstrasse 78 - 82, 13156 Berlin, was significantly drier, as a similar but untreated reference room; for the treated room also showed a quicker heatability. Due to the special properties of the v.g. Coating which concern sorption and water vapor diffusion resistance, is particularly suitable for the coating according to the invention given. The coating is large and to be applied in a minimum thickness of 200 µm.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00108771A EP1149958A1 (en) | 2000-04-25 | 2000-04-25 | Coating for the interior of a room to improve the hygrometric room climate and reduce the risk of mildew formations in rooms |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00108771A EP1149958A1 (en) | 2000-04-25 | 2000-04-25 | Coating for the interior of a room to improve the hygrometric room climate and reduce the risk of mildew formations in rooms |
Publications (1)
Publication Number | Publication Date |
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EP1149958A1 true EP1149958A1 (en) | 2001-10-31 |
Family
ID=8168544
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP00108771A Withdrawn EP1149958A1 (en) | 2000-04-25 | 2000-04-25 | Coating for the interior of a room to improve the hygrometric room climate and reduce the risk of mildew formations in rooms |
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EP (1) | EP1149958A1 (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB806437A (en) * | 1954-02-20 | 1958-12-23 | Marcel Lucien Bertrand | An improved fireproofing product resistant to high temperature and process for its manufacture |
GB2214176A (en) * | 1988-01-20 | 1989-08-31 | Howard Wilkinson | Compositions for contolling damp and/or mould |
WO1999028125A1 (en) * | 1997-12-03 | 1999-06-10 | Innovative Coatings Corporation | Novel synthetic finishing and coating systems |
-
2000
- 2000-04-25 EP EP00108771A patent/EP1149958A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB806437A (en) * | 1954-02-20 | 1958-12-23 | Marcel Lucien Bertrand | An improved fireproofing product resistant to high temperature and process for its manufacture |
GB2214176A (en) * | 1988-01-20 | 1989-08-31 | Howard Wilkinson | Compositions for contolling damp and/or mould |
WO1999028125A1 (en) * | 1997-12-03 | 1999-06-10 | Innovative Coatings Corporation | Novel synthetic finishing and coating systems |
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Owner name: MAINKA, DIETER, DIPL.-ING. Owner name: SIEBEL, LOTHAR, DR.-ING. |
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Inventor name: SIEBEL, LOTHAR, DR.-ING. Inventor name: MAINKA, DIETER, DIPL.-ING. |
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