1991 Volume 17 Issue 6 Pages 1110-1116
In the equipment layout of a multifloor batch plant, the determination of the floor for siting of each equipment nuit is an important problem because it must be solved before arranging the plot plans for each floor. The gravity flow of the piping should be satisfied during this determination. However, it is not easy to solve the problem for a multipurpose batch plant because gravity flows of all pipes cannot be satisfied.
In this study, optimization of the gravity flow is converted into minimization of the pumping-up cost. Unification of the floor areas and preferable arrangement of equipment for operations (preference) should also be considered in the layout work, and it is natural to represent them as foundation and the penalty costs. Accordingly, this multiple-objective problem can be represented by a single-objective one. With directness, the present model contains constraints that change with conditions, but it can be transformed into a mixed-integer linear programming (MILP) model as a result of many considerations in the formulation. The floorfor siting of for each equipment unit is determined by solving this MILP model.
