1. INTRODUCTION TO HX-NET
User Interface

2. SOFTWARE STRUCTURE Heat Integration Case Heat Integration Project
One scenario (set of streams)
Heat Integration Case
One design (network)
Design – Operation mode
Multiple scenarios
Heat Integration Project
Multiple designs (for each scenario)
Design - Retrofit mode

3. Class example Stream Conditions mCp [KW/C] Tin [C] Tout H_Stream1 hot
8.0
300
150
H_Stream2
2.0 50
H_Stream3
3.0
200
C_Stream4
cold
5.0
190
290
C_Stream5 90
C_Stream6
4.0 40

4. Stream
290 C
190 C
140 C
90 C
40 C
mCp KW/C
300 C
200 C
150 C
100 C
50 C
300 KW
-50 KW
-350 KW
50 KW

5. At pinch: (mCp)hot ≤ (mCp)cold
Stream
290 C
190 C
140 C
90 C
40 C
mCp KW/C
300 C
200 C
150 C
100 C
50 C
300
Q=500
290 4 4
190
237.5
Q=700
190
190
QH = 100 5 3 3
150
200
Q=300
165 2 2
100 90
102.5
150
Q=100 1 1
100 90
At pinch: (mCp)hot ≤ (mCp)cold

6. At pinch: (mCp)hot ≥ (mCp)cold
Stream
290 C
190 C
140 C
90 C
40 C
mCp KW/C
300 C
200 C
150 C
100 C
50 C
100
Q = 100 90 6 6 50 40
100
Q = 100 90 7 7
66.7 40
QC = 50 8 50
At pinch: (mCp)hot ≥ (mCp)cold