.ThermoPower.Functions.ValveCharacteristics.equalPercentage

Information

d(rc)/d(pos) = k d(pos).

The constant k is expressed in terms of the rangeability, i.e. the ratio between the maximum and the minimum useful flow coefficient:

rangeability = exp(k) = rc(1.0)/rc(0.0).

The theoretical characteristic has a non-zero opening when pos = 0; the implemented characteristic is modified so that the valve closes linearly when pos < delta.

Interface

function equalPercentage
  extends baseFun;
  input Real rangeability = 20 "Rangeability" annotation(
    Dialog);
  input Real delta = 0.01 "Characteristic is linear for opening < delta" annotation(
    Dialog);
end equalPercentage;