抄録
This paper proposes a new method for optimization of ventilation network with a main fan in terms of minimization of the total cost which consists of the cost of power for ventilation and that of controlling resistances of airways. The elements to be considered in this method are the fan characteristics and resistances of the network. The proposed method yields the optimum fan operating point and resistances to be controlled. The following results are obtained through analyses of some examples by this method:
1. More energy saving control of ventilation network can be attained by the proposed method which considers fan characteristics than by others which do not.
2. Results computed by this method may notmake optimized values, when improper initial values of fan characteristics and resistancesare used. However, the optimum values will be gained by calculating again using the results of the previous calculation as the initial values for the subsequent trial.
3. Optimization is better when the required air quantities are constrained by lower and upper boundthan when given as fixed values.
