1.  Fouling prediction  Determination of most economical exchangers maintenance  Calculation of charges in monetary value caused by tube efficiency losses ROP-Programm designd for ACR by the Technical University of Vienna 1AC Rädler Environment technique GmbH, www.ac-raedler.at lecture: Sigrun Rädlerwww.ac-raedler.at Applicable for all industrial used tubular heat exchangers

2. Fouling process is predicted immediately: Increased Temperature/Energy Growing of Fouling Loss of Capacity in days 2 AC Rädler Environment technique GmbH, www.ac-raedler.at lecture: Sigrun Rädlerwww.ac-raedler.at

3. Feature for operation cost: Company own figures are put (in the masque) and are computed regarding cost of - energy - stand still - capacity loss 3 AC Rädler Environment technique GmbH, www.ac-raedler.at lecture: Sigrun Rädlerwww.ac-raedler.at

4. Exchanger efficiency losses in Monetary Value Cleaning point Loss during operation Cost of maintenance 4 AC Rädler Environment technique GmbH, www.ac-raedler.at lecture: Sigrun Rädlerwww.ac-raedler.at

5. Improved productivity save resources and cost 1) Legend: Last slide indicates the source of following outcome  Efficient exchanger operation is the simplest way to reduce production costs  Chemical cleaning cause rough inner tube surface which lead to faster fouling, to earlier corrosion and tube replacement  Smooth inner tube surface prolong optimal exchanger operation  Regular cleaning diminish corrosion failure 5AC Rädler Environment technique GmbH, www.ac-raedler.at lecture: Sigrun Rädlerwww.ac-raedler.at

6.  Regaining of blocked tubes improve exchangers operation capacity – with RTC possible to regain  Regaining of fully exchangers efficiency contributes to energy saving, capacity improvement and at least to improve exchangers life cycle.  Optimal exchanger operation further contributes to:  less pump pressure  less repairs  less problems before or end of pipe equipment  reduction of emissions 6AC Rädler Environment technique GmbH, www.ac-raedler.at lecture: Sigrun Rädlerwww.ac-raedler.at

7.  Oversized exchangers capacity vary from 10 % to 300 %  25 % of oversized exchanger design will increase investment cost up to 12 %  Parallel connected exchangers, which are optimal maintained:  Minimise efficiency loss  Minimise production loss (no stand still)  Reduce corrosion failure  Contribute to plant harmonization,  improve production quality  and double exchangers life cycle 7AC Rädler Environment technique GmbH, www.ac-raedler.at lecture: Sigrun Rädlerwww.ac-raedler.at Optimal maintained heat exchangers may avoid to much oversized exchanger design

8. Legend: 1)Book: published by PP Publico Publication, Germany “Heat Exchanger Fouling, Mitigation and Cleaning Technologies” by Prof. H. Müller-Steinhagen, Dr. H. U. Zettler, AC Rädler Environment technique Ltd. A-1220 Vienna, Leonard-Bernstein-Street 8/2/23.8  + 43(0) 676 374 65 09  + 43(0) 676 616 99 22  office@ac-raedler.at www.ac-raedler.at 8AC Rädler Environment technique GmbH, www.ac-raedler.at lecture: Sigrun Rädlerwww.ac-raedler.at