Fresh water storage

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In the area of ​​heating technology, a fresh water storage tank is a buffer storage tank that has an integrated, long pipe as a heat exchanger to heat the cold drinking water . The external connection of a plate heat exchanger ( fresh water station ) is also possible, which also uses the stored heat of the buffer tank to heat the cold water flowing in parallel. Fresh water storage tanks reduce the risk of legionella formation , as the water is quickly renewed again and again using the flow principle and does not remain in a storage tank for hours (as with a combination storage tank ). The storage volume and the length or the construction of the heat exchanger pipe are crucial for the so-called bulk capacity of a fresh water storage tank, i.e. H. the amount of hot water that it can deliver until the heat supply is no longer sufficient.

The term "fresh water tank" is misleading and actually not entirely correct, as it suggests that the fresh water is stored. In reality, it stores the heat energy used to heat fresh water.

literature

  • Chapter drinking water heating. In: Siegfried Blickle et al .: Expertise in installation and heating technology , Europa Lehrmittel, 5th edition from 2014, ISBN 978-3-8085-1527-3 , from p. 530
  • Fresh water station. In: Siegfried Blickle et al .: Expertise in installation and heating technology , Europa Lehrmittel, 5th edition from 2014, ISBN 978-3-8085-1527-3 , pp. 564-565