Partition and method for controlling the temperature in an area

Abstract

Partition for separating the interior of a building construction such as a greenhouse from the surroundings. This partition is fitted at an inclination and is of multi-walled, such as double-walled, construction. According to the invention, the separation wall facing the interior of the building construction is provided with a layer of water with such a small thickness that a free space remains between the wall of the partition facing the outside and the layer of water. It has been found that the temperature in the interior of the building construction can be accurately controlled in this way. By means of the choice of the liquid used to build up the layer, it is possible either not to influence the transmission of light or to modify the transmission of light.

1 . A partition for separating two areas, comprising two translucent separation walls located a distance of at least about five millimetres apart, wherein means are provided for moving a liquid between said separation walls, said means comprising liquid dispensing nozzles arranged to provide a liquid film, wherein one of said separation walls is an external separation wall and the other of said separation walls is an internal separation wall, wherein said liquid film moves over said internal separation wall, a thermally insulating space being present between said liquid film and the external separation wall.  
   
   
       2 . The partition according to  claim 1 , which is installed at an inclination, wherein said external separation wall is an separation wall and the internal separation wall is a lower separation wall.  
   
   
       3 . The partition according to  claim 1 , wherein the liquid film has a layer thickness of less than about five millimetres.  
   
   
       4 . The partition according to  claim 1 , wherein said thermal insulating space has a thickness of more than about three millimetres.  
   
   
       5 . The partition according to  claim 1 , wherein a liquid encapsulating layer is arranged between said lower separation wall and said upper separation wall.  
   
   
       6 . The partition according to  claim 4 , wherein said thermal insulating space comprises a film layer.  
   
   
       7 . The partition according to  claim 1 , wherein said external separation wall is installed permanently and said internal separation wall is removable.  
   
   
       8 . The partition according to  claim 1 , wherein the partition separates the interior of a building construction from surroundings of the building construction, wherein said internal separation wall provided with liquid is adjacent to the interior of said building construction.  
   
   
       9 . The partition according to  claim 1 , wherein the internal separation wall or the external separation wall comprises plastic and more particularly polyamide.  
   
   
       10 . The partition according to  claim 1 , wherein the external separation wall is provided with a surface that can be removed therefrom in order to form an opening in said external separation wall.  
   
   
       11 . The partition according to  claim 1 , having a frame that is arranged around said internal separation wall and contains a liquid feed and a liquid discharge.  
   
   
       12 . The partition according to  claim 11 , wherein said internal separation wall can be moved into a space by said frame.  
   
   
       13 . A building construction containing a partition for separating two areas, comprising two translucent separation walls located a distance of at least about five millimetres apart, wherein means are provided for moving a liquid between said separation walls, said means comprising liquid dispensing nozzles arranged to provide a liquid film, wherein one of said separation walls is an external separation wall and the other of said separation walls is an internal separation wall, wherein said liquid film moves over said internal separation wall, a thermally insulating space being present between said liquid film and the external separation wall.  
   
   
       14 . The building construction according to  claim 13 , further comprising a heat sink for releasing said liquid to the liquid dispensing nozzle, wherein the heat sink takes up the liquid originating from said internal separation wall.  
   
   
       15 . A method for controlling the temperature in an area, comprising: 
 separating the area from surroundings of the area with a translucent partition comprising two separation walls at least about five millimetres apart, wherein one separation wall constitutes the boundary with said area and the other separation wall constitutes the boundary with said surroundings;    applying a liquid film to one separation wall, such that the top of the liquid film is some distance away from said other separation wall, and;    arranging an insulating gas in said space between said liquid film and said other separation wall, wherein the heat transport to or from said area is determined by controlling the amount of liquid supplied or discharged.    
   
   
       16 . The method according to  claim 15 , wherein said film is at least about ninety five percent translucent.  
   
   
       17 . The method according to  claim 15 , wherein said liquid comprises water or glycol.  
   
   
       18 . The method according to  claim 15 , wherein agents that lower the surface tension of the liquid have been applied to said liquid or to said one separation wall.  
   
   
       19 . The method according to  claim 15 , wherein additives that influence light transmission have been applied in said liquid.  
   
   
       20 . The method according to  claim 15 , wherein the feed temperature of said liquid is below about fourteen degrees Celsius.  
   
   
       21 . The method according to  claim 15 , wherein an electrical potential is applied to said liquid film.