| 摘要 |
Device (1a,1b) for supplying tap water, the device comprising a cold tap water system for supplying cold tap water, characterized in that the cold tap water system comprises a first circulation conduit (3) for circulation therein of cold tap water, to which first circulation conduit a number of cold water draw-off points (2) are connected. Also method for controlling pathogens in such a device. What is essential is that cold tap water circulates in a circulation conduit forming part of a cold tap water system. The cold tap water in the cold tap water system is cooled, and the whole is kept below a determined desired temperature, for instance 200C. The development of pathogens such as legionella bacteria is thus countered in the cold tap water system. Heating and subsequent recooling, or flushing of the cold tap water system with fresh clean water is then not necessary, or at least to minimal extent. When said installation is also adapted to supply hot tap water, energy can be saved by transferring heat from the cold tap water system to the hot tap water system. |
