System and method for making hot water available in a domestic water installation and domestic water installation
View Patent ↗A method, system and device for making hot water available in a water-supply system is disclosed. The water-supply system includes a source of hot water, a hot-water line and one or more tap connections for hot water connected to the hot-water line. The method includes transporting water from the source of hot water through the hot-water line during at least a portion of periods of non-withdrawal through the one or more tap connections such that a temperature profile of water in the hot water line is at least one of substantially temporally constant and varying spatially monotonically along the hot-water line.
1. A method for making hot water available in a domestic water installation, said domestic water installation comprising a source of hot water, a hot-water line and one or more tap connections for hot water connected to the hot-water line, the method comprising:
transporting water from said source of hot water through said hot-water line, during periods of non-withdrawal through said one or more tap connections, such that a temperature profile of water in said hot water line is substantially temporally constant and varying spatially monotonically along said hot-water line;
wherein said step of transporting includes a substantially permanent throughput of water through the hot water line with at most periodic pause time said pause times a length selected to prevent cooling of water in said hot-water line.
2. The method according to claim 1 , the temperature profile includes a specific temperature at one of said tap connections within a predetermined range.
3. The method according to claim 2 , wherein the specific temperature is between 27° C. and 35° C.
4. The method according to claim 1 , wherein said step of transporting includes transporting water during non-withdrawal times at a substantially constant rate.
5. The method according to claim 1 , wherein said step of transporting includes actuating a circulation pump to transport water through said hot-water line.
6. The method according to claim 1 , wherein said step of transporting includes actuating a valve to control transport of water through said hot-water line.
7. The method according to claim 1 , further comprising:
returning water to said source through a recirculation line linked to said hot-water line proximate to a last one of said tap connections.
8. A method according to claim 7 , wherein said step of returning includes actuating a circulation pump to return water through said recirculation line.
9. A method according to claim 8 , wherein said circulation pump is arranged proximate to said last one of said tap connections.
10. A method according to claim 8 , wherein said circulation pump is arranged proximate to said source of hot water.
11. A method according to claim 1 , further comprising:
returning water to a cold-water line coupled to said hot water line proximate to a last one of said tap connections.
12. A method according to claim 11 , wherein said step of returning includes actuating a circulation pump positioned between said hot-water line and said cold-water line.
13. The method according to claim 11 , wherein said step of returning includes actuating a valve positioned between said hot-water line and said cold-water line proximate to said last one of said tap connections.