5.2. Retrofitted scheme for the refrigeration levels
In this study, the temperature differences between
process and the refrigeration levels have been improved
to introduce the new refrigeration levels. The existing
(9.3, 2.1, 18.3 1C) and proposal (14, 2.1, 13 1C)
refrigeration level placements are shown in Fig. 20. This
figure clarifies that the area between EGCC and refrigeration
levels, (sTo)HEN has decreased, but there are no
changes in chiller’s duty.