Abstract: A water circulation system for hospitals and other facilities with large water circulating systems. A pressure and/or flow sensitive valve directs low pressure, high temperature water in the outlet head to a return pipe, while directing high pressure water to water outlet openings. The system allows a constant flow of heated water above 55° C. past water outlet heads even when the water system is not in use, thus avoiding static water in pipe lines and the growth of microorganisms.

Abstract: The present invention relates to a method and arrangement of optimizing the level of anti freeze agent in a heat transfer fluid in a heat exchange system The method comprises determining (305) a wanted level of anti freeze agent at least partly based on the temperature of the media to which the heat exchange system will deliver heat, controlling (310) the current level of the anti freezing agent in the heat transfer fluid. Anti freezing agent is added 315:1 to the heat transfer fluid if the current level is a predetermined amount lower than the wanted level, and removed 315:2 from the heat transfer fluid if the current level is a predetermined amount higher than the wanted level.

Abstract: A conducting filter adapted for removing airborne particles from the atmosphere and a filter assembly including such a filter. The conducting filter is made from a polymer which has received significantly increased electrical conductivity by a doping process, the doped polymer referred to as a synthetic metal, the synthetic metal having electrical properties such that the filter according to the invention, including such polymer, may be supplied with electrical charge and whereby maintain its efficiency with regards to the electrostatic properties during operation. In the filter assembly according to the invention, the conducting filter may be supplied with electrical charge by connecting it to a voltage source.

Abstract: A water circulating system for reducing the growth and accumulation of micro-organisms for hospitals and other facilities with large water circulating systems. The system allows a constant flow of heated water above 55° C. past water outlet heads even when the water outlet head is not in use, thus avoiding static water in the pipe lines and the growth or accumulation of micro-organisms.

Abstract: The present invention relates to a conducting filter (110) adapted for removing airborne particles from the atmosphere and a filter assembly (150, 200, 300, 400, 500, 600) comprising such a filter. The conducting filter is made from a polymer which has received significantly increased electrical conductivity by a doping process. Such doped polymer are referred to as synthetic metals. Thanks to the electric properties of the synthetic metal, the filter according to the invention, comprising such polymer, may be supplied with electrical charge and whereby maintain its efficiency with regards to the electrostatic properties during operation. In the filter assembly according to the invention, the conducting filter may be supplied with electrical charge by connecting it to a voltage source.

Abstract: A water circulation unit (120) for reducing bacteria growth in a water supply system includes elements for controlling temperature and flow (133) which is arranged to provide a dynamically controlled flow of water from both a hot water pipe (140) and a cold water pipe (150) to at least one return water pipe (160) such that the water from the hot water pipe is above the temperature region in which dangerous bacteria growth may occur, and the water from the cold water pipe (150).

Abstract: The present invention relates to a conducting filter (110) adapted for gas purification and a filter assembly (150, 200, 300, 400, 500, 600) comprising such filter. The conducting filter is made from a polymer which has received significantly increased electrical conductivity by a doping process. Such doped polymers are referred to as synthetic metals. Thanks to the electric properties of the synthetic metal, the filter according to the invention, comprising such polymer, can be supplied with electrical charge and thereby maintain its efficiency with regards to the electrostatic properties during operation. In the filter assembly according to the invention, the conducting filter is supplied with electrical charge by connecting it to a high voltage source.

Abstract: The present invention relates to a method and arrangement of optimizing the level of anti freeze agent in a heat transfer fluid in a heat exchange system The method comprises determining (305) a wanted level of anti freeze agent at least partly based on the temperature of the media to which the heat exchange system will deliver heat, controlling (310) the current level of the anti freezing agent in the heat transfer fluid. Anti freezing agent is added 315:1 to the heat transfer fluid if the current level is a predetermined amount lower than the wanted Level, and removed 315:2 from the heat transfer fluid if the current level is a predetermined amount higher than the wanted level.

Abstract: A cleaning apparatus, system and method for parts of the heating/cooling system of an vehicle. The apparatus effectively impedes odour and pollution originating from micro-organisms growing on the cooling and heating units. The cleaning assembly 220 includes of distribution tubes 225 provided with nozzles 230 arranged to spray cleaning substance onto the surfaces of the cooling and/or heating units 200, 232. The distribution tube preferably extends through at least a portion of the plurality of heating/cooling flanges 215 of the heating/cooling units and the nozzles are provided in the spaces formed between two adjacent flanges.

Abstract: The present invention relates to a conducting filter (110) adapted for gas purification and a filter assembly (150, 200, 300, 400, 500, 600) comprising such filter. The conducting filter is made from a polymer which has received significantly increased electrical conductivity by a doping process. Such doped polymer are referred to as synthetic metals. Thanks to the electric properties of the synthetic metal, may the filter according to the invention, comprising such polymer, be supplied with electrical charge and whereby maintain its efficiency with regards to the electrostatic properties during operation. In the filter assembly according to the invention, the conducting filter is supplied with electrical charge by connecting it to an high voltage source.

Abstract: A water circulation unit (120) for reducing bacteria growth in a water supply system includes elements for controlling temperature and flow (133) which is arranged to provide a dynamically controlled flow of water from both a hot water pipe (140) and a cold water pipe (150) to at least one return water pipe (160) such that the water from the hot water pipe is above the temperature region in which dangerous bacteria growth may occur, and the water from the cold water pipe (150)

Abstract: A water tapping point with a hot water inlet; a cold water inlet, a hot water space, a cold water space, a mixing chamber, a hot water outlet from the hot water space and a cold water outlet from the cold water space. A characteristic feature of the invention is passage means extending between the hot water outlet and the cold water outlet and provided with means for connection to a common return water pipe. The invention also relates to a tap water network comprising a plurality of tapping points. The tap water network needs only one return water pipe.

Abstract: A water tapping point with a hot water inlet; a cold water inlet, a hot water space, a cold water space, a mixing chamber, a hot water outlet from the hot water space and a cold water outlet from the cold water space. A characteristic feature of the invention is passage means extending between the hot water outlet and the cold water outlet and provided with means for connection to a common return water pipe. The invention also relates to a tap water network comprising a plurality of tapping points. The tap water network needs only one return water pipe.

Abstract: Tapping point including a mixer (10) for cold and hot water where the mixer (10) has a hot water inlet (20) arranged to connect to a feed pipe (64) for hot water, a cold water inlet (40) arranged to connect to a feed pipe (70) for cold water, a mixing chamber (32) for mixing hot water introduced through the hot water inlet (20) with cold water introduced through the cold water inlet (40), a space for hot water (22) between the hot water inlet and the mixing chamber (32), a space for cold water (42) between the cold water inlet (40) and the mixing chamber (32), a mixer outlet (34) for mixed water from the mixing chamber (32), and an initial valve device (30,36,50) arranged so that in an open mixing position, it allows cold water and hot water to enter into the mixing chamber (32) from their respective spaces (22,42) and exit as mixed water from the mixer outlet (34), and, in a closed mixing position, prevents the exit of mixed water from the mixer outlet (34).