Table 3 Optimization model variables
From: District cooling network optimization with redundancy constraints in Singapore
Name | Unit | Description |
|---|---|---|
ζ | S$ | Total system cost (Inv, O&M, Rev, Gen) |
ξ ij | — | Binary decision variable: 1 = build pipe |
ψ ijt | — | Binary decision variable: 1 = use pipe |
\(\overline {\pi }_{ij}\) | kW | Thermal power flow capacity into arc a ij |
\(\pi ^{\text {in}}_{ijt}\) | kW | Thermal power flow from v i into arc a ij |
\(\pi ^{\text {out}}_{ijt}\) | kW | Thermal power flow out of arc a ij into v j |
ρ it | kW | Cooling in source vertex v i |