Optimum Design of Heat Exchangers Networks,Part-2, case stud

Abstract:
In this paper the computerized framework introduced in part-1 for
Heat Exchanger Network Synthesis (HENS) with optimality conditions of
achieving the least operating and capital cost has been applied on an
industrial atmospheric distillation unit existing in one of the Egyptian
refineries . The application includes two types of designing: grass-root and
revamp of the existing design. For the final grass-root design, the saving of
utilities is 50% of the actual consumption while the net annual saving
reaches 2,193,690 $/year .For revamping of existing design the % saving of
hot & cold utilities are 38.1% & 43.2% respectively and the annual saving of
1,723,104 $/year is achieved.