1 research outputs found
Efficient Retrofitting Approach for Improving Heat Recovery in Heat Exchanger Networks with Heat Transfer Intensification
In this paper, an efficient design
method is presented to implement
heat transfer intensification technologies for increasing energy saving
in industrial scale heat exchanger networks (HENs). First of all,
the detailed models of shell-and-tube heat exchangers are utilized
to estimate exchanger performances under normal and intensified conditions,
and an optimization method based on simulated annealing is proposed
to find appropriate retrofitting options in the existing HENs. Then,
a novel retrofit approach based on the exchanger models and optimization
method is introduced to retrofit HENs with several possible retrofit
strategies, including exchanger relocations, heat transfer intensification,
additional area, and stream repiping. Moreover, a new efficient software
package (int-HEAT) is developed for the addressed retrofit problems.
The interface of int-HEAT is designed to focus on a clear presentation
of HEN retrofit procedure, which allows users to easily control all
the retrofit stages. An industrial problem of preheat train for crude
oil distillation is solved with the use of the new developed software
through all the main steps of the proposed retrofit procedure, namely
reducing energy consumption, identifying retrofitted exchangers, selecting
retrofit strategies, and implementing heat transfer intensification
techniques. The case study demonstrates the validity and efficiency
of the developed software tool and the proposed approach