Overview

This chapter covers the practicalities of the targeting process in considerably more depth than the initial summary in Section 3.2, with the following subsections:

Forming a heat and mass balance and extracting the stream data (Section 3.1).

Individual stream contributions and threshold problems (Section 3.3).

Multiple utilities, balanced composite and grand composite curves (Section 3.4).

Zonal targeting and pressure drop targeting (Section 3.5).

Targeting for number of equipment units (exchangers, heaters and coolers), heat exchanger area and shells, and topology traps (Section 3.6).

Supertargeting for variation of capital, operating and total cost with ? T _min (Section 3.7).

We also introduce a major new case study for an organics distillation unit; stream data extraction is covered in Section 3.2 and targeting in Section 3.8.