This is a model of a so-called "reservoir network" (Sommer
2020), i.e., a fifth generation district system with unidirectional
mass flow rate in the district loop, and energy transfer stations
connected in series. In this model, the temperature of the district
loop is stabilized through the operation of the plant and the
borefield. The main circulation pump has a constant mass flow rate.
Each substation takes water from the main district loop and feeds
its return water back into the main district loop downstream from
the intake. The pipes of the main loop are designed for a pressure
drop of dpDis_length_nominal=250 Pa/m at the design
flow rate.
Sommer T., Sulzer M., Wetter M., Sotnikov A., Mennel S., Stettler C. The reservoir network: A new network topology for district heating and cooling. Energy, Volume 199, 15 May 2020, 117418.
DHC
package.