9.2.8. Table of circuits<br>

### 9.2.8. Table of circuits

The “Circuits” table displays calculation results listed for all routes from source to individual terminal units. At the top is the name of source / boiler to which the circuits described below are connected. This is followed by the name of the circuit with the name of the terminal unit.

The following tables display labels of pipe-runs that supply the terminal unit, results for the terminal unit itself and for return pipe-runs running back to the source. The following fields are included:

Label | pipe-run number specified by user or determined automatically; separate designations for terminal units and the source |
Heat flux Q/F | heat flux carried by pipe-run | [W]
G | mass flow rate | [kg/h]
L | length of pipe-run | [m]
Diam. | diameter of pipe-run specified by user or determined automatically | [mm]
w | velocity of medium in pipe-run | [m/s]
R | specific pressure drop | [Pa/m]
Zeta | sum of local flow resistance coefficients of fitting components on pipe-run (those fittings, which have no known pressure drop or Kv assigned) |
z | local pressure drop | [Pa]
R*L+Z | total local flow resistance and along length | [Pa]
Press. drop. fitt. | pressure drop on fittings installed on the pipe-run | [Pa]
Tot. press. drop | total pressure drop | [Pa]
dt | temperature drop in pipe-run or terminal unit | [K]
Insul.th. | sized thickness of insulation on pipe-run | [mm]

Additionally the table displays for the source the results of heat flux, flow rate and available pressure, and for terminal units the results of heat flux, flow rate, pressure drop on fittings installed on terminal units, total pressure drop on terminal unit, temperature drop and gravitational head at terminal unit.