| Units: | GJ (Metric), MMBtu (U.S. Imperial) |
| Mode: | Input Only |
| Multi-band: | False |
| Default Value: | 0 |
| Validation Rule: | Any Value |
| Key Property: | No |
| Description: | Coefficient of fuel offtake |
Heat Plant Constraints Fuel Offtake Coefficient is the left-hand side term on the total fuel used (Fuel Offtake) in the constraint.
With the coefficient represented by a(i,j) the following term is added to the formulation:
... + a(i,j) × ∑ ( i ) heat plant Fuels Offtake ( i ) ... {≤, ≥, =} bj
where:
i indexes the Fuels used by
the heat plant
By default, this sum is taken over all heat plant Fuels. However you can limit the set of Fuels included in the sum by adding Heat Plant Fuels memberships with no associated property definitions. This is a special case of using 'null' memberships to filter the terms included in another constraint property.