Ms. Narumon Vipanurat:  An MILP model for heat exchanger network retrofit 

(Prof. Miguel Bagajewicz)

Results (1 Feb 05):

Existing Network (Briones' paper)

Retrofitted Network (Narumon-Barbaro 's Automatic Retrofit)

Retrofitted Network (Briones' paper) ===> Fig. 18 ---page 556

Test case: existing 4 stream network

Existing Network (4s1-existing network)

Retrofitted Network (Narumon-Barbaro 's Automatic Retrofit)

Retrofitted Network (Barbaro's Non-automatic retrofit)

Results:

GAMS Performance Testing

Problem 4S1 (One zone)------------------------Power point file ( HENs & interval no.),  Excel file(Cost & interval no.)

Problem 7S4 (One zone)------------------------Power point file ( HENs & interval no.),  Excel file(Cost & interval no.)

Problem 10SP (One zone)Barbaro's problem-----Power point file ( HENs & interval no.),  Excel file(Cost & interval no.)

Problem EX1 (One zone) ----- -----------------Power point file ( HENs & interval no.),  Excel file(Cost & interval no.)

Problem 4S1 (Two zones)  Barbaro's problem---Power point file ( HENs & interval no.),  Excel file(Cost & interval no.)

Problem 7S4 (Two zones)  Barbaro's problem---Power point file ( HENs & interval no.),  Excel file(Cost & interval no.)

Problem 10SP (Two zones) -------------------No Results

Problem EX1 (Two zones)Barbaro's problem--- Power point file ( HENs & interval no.),  Excel file(Cost & interval no.)

Barbaro's New design result (auto- 18 streams-average CP for each stream) Barbaro's problem---

Barbaro's Retrofit result (non-auto 18 streams-varied CP for each stream) Barbaro's problem--- Power point file

Barbaro's Retrofit result - reslim=48000 sec (non-auto 18 streams-varied CP for each stream) Barbaro's problem--- Power point file