for multi-family buildings with central heating system
In multi-family houses, it is typical to have a district heating substation in the basement supplying the flats with hot water for both room heating and DHW purposes.
There are different application types that are for multi-family building with a central system which are: Instantaneous DHW application, indirectly connected room heating application, directly connected room heating with mixing loop, indirectly connected room heating and instantaneous domestic hot water application, directly connected room heating with mixing loop and domestic hot water instantaneous application and indirectly connected two-step HE and instantaneous DHW application.
Of the above Danfoss recommends to use the following application types:
The design of the secondary heating system, the heat exchanger, and the control equipment on the primary DH network supply side are directly related to the successful operation of district heating substations.The variations in consumption from hour to hour and day to day cause the differential pressure to fluctuate markedly as the flow varies in the primary supply. This affects control of the supply to the substation in the building.
When connecting a building to district heating, many options are available for heating the building and for the preparation of domestic hot water, and with each application there are specific benefits and limitations.
The best solution comes from matching the system infrastructure and design with the available supply of energy sources, building type and individual needs.
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