DAMAFIN Design & Engineering Department relies on the most advanced computer facilities for: • Thermal design • Mechanical design • Steel Structure design • Piping & Instrumentation After receiving and accepting the order, the Design & Engineering Department reviews all aspects of the design, taking the customers’ comments into account, before commencing production in our workshops. Designers are fully trained under GEA/Btt Agreement for designing Air Coolers and Condensers. DAMAFIN, enjoying a high level of experience in Heat Exchangers, has already designed, manufactured and installed several Air Coolers in big industrial projects. Proof of our experience lies in the great variety of our design works. The complicated and time-consuming calculations that are indispensable in obtaining optimum results, can be performed quickly and faultlessly by DAMAFIN Design & Engineering Department with the use of specially-designed computer programs and the latest edition of standards. Furthermore, consulting and designing services are preformed for other companies by our Design and Engineering Department.

DAMAFIN thermal design concepts are created to work in applications requiring techniques and materials capable of withstanding extreme operating conditions. Using specific softwares developed by French GEA-BTT, our thermal engineers carry out calculations relating to heat transfer, fluid flow, noise, vibration and fouling. With our professional and active thermal engineers, we have the advantage of having the latest information regarding heat transfer calculations and techniques. DAMAFIN thermal section in Sales Engineering Department is specialized in: 1. Improving and updating of thermal rating programs2. Selection of the most optimized type and size of Air Coolers (Forced, Induced) 3. Calculation of dimension, size and selection of the type of material for Air Coolers components4. Prediction of the noise level5. Preparation of specifications sheet (data sheet)6. Preparation of the preliminary bill of the material and calculation of the estimated weight of Air Coolers7. Cost estimation8. Preparation of Air Cooler plan9. Performance of different types of finned tubes (calculation of heat transfer and pressure drop). DAMAFIN has gained reputation for its expertise and know-how in the design of Air Coolers. It has earned this reputation by providing innovative designs for its products. These innovations have provided our clients with optimized solutions for all required applications such as high operating pressures, high temperatures, corrosive fluids and environments. The Softwares that Thermal Section engineers use are: THERM, B-JAC, HTRI, HEXTRAN.

All mechanical design activities including strength calculation and basic & detailed engineering for Air Coolers are performed by our Mechanical Design engineering team. Sophisticated CADand other facilities with the latest software versions are used to provide solutions in: 1. Mechanical calculation (Pressure Parts) 2. Assembly & Tube Bundle drawings, etc. 3. Welding Procedure Specification (WPS) 4. Non-Destructive Test (NDT) 5. Detail Drawings 6. Post Weld Heat Treatment (PWHT) 7. Material Take Off list (MTO) 8. Quality Control Plan (QCP) 9. Fabrication Methods 10. Operating & Erection Manuals 11. Painting & Galvanizing specifications

Mechanical Design is performed by the following Softwares: • MECAL • PV-ELITE • AC-CAD • AUTO CAD • SOLID WORKS • ANSYS Furthermore, to ensure the quality and reliability of our products, DAMAFIN operations are performed according to the well-known international design codes such as: ASME Sec VIII -Div. 1&2, API 661, ASTM, TEMA, ANSI.

DAMAFIN continuously updates its computerized design programs, developed by GEA-BTT, to achieve the most optimized dimensions and sections of the steel structure in design. Finite element method is utilized for dynamic and static calculations (natural frequency response with all sorts of excitation including earthquake, wind, and sea transportation of Air Cooler modules). The standards/codes used for the steel structure design are as follows: • API 661 Requirements • UBC • AISC• ANSI A58.1 Steel structure design engineers utilize the following finite elements softwares: • EFFEL • SAP 2000 • TEKLA (XSTEEL)

Basic and detailed engineering for equipment including piping, electropump, surge tank and instrumentation are carried out by DAMAFIN through a dedicated team of experts with the latest revision of the sophisticated engineering softwares, including: • AUTO PLANT • CAESAR II • PIPENET To find solution in: 1. 3D modeling 2. Piping plan & isometric drawing 3. Hydraulic Calculation 4. Piping stress analysis 5. Hook-up specifications & drawing 6. Electrical & instrument specifications

DAMAFIN Air Coolers are used for cooling and condensing all types of fluids. You will find them as process coolers in the oil/gas and petrochemical industries. Furthermore, they are used as partial or total condensers in the oil refinery and petrochemical industry.The most evident advantages of Air Coolers are: • No problem arising due to thermal and chemical pollution of the cooling fluids • Flexibility in installation at any plant locations and plot-plan arrangements such as installation over other units • Reduction of maintenance costs such as the cleaning of the inside of the exchanger tubes, if required • No need of over-sizing the equipment due to tube fouling • Easy installation through bolted assembly DAMAFIN is able to design and manufacture Air Coolers for up to a pressure of 1000 bar application.

INDUCED DRAFT UNIT The induced draft unit provides a steady and durable thermal performance through protection of the finned surfaces against wind, rain, and snow by the plenum chamber. The induced draft also ensures: • Better air distribution • Less hot air recirculation • Less fouling • Lower noise at grade FORCED DRAFT UNIT The forced draft unit allows an easy access to the fans and bundles for maintenance. Furthermore, the fans remain in the cold ambient air.

PLUG HEADER The plug header is the most commonly used up to 350-bar working pressure. The plug hole opposite each tube allows expansion of the tube in the tube sheet, mechanical cleaning and plugging in case of leakage. Seal welding or strength welding can be provided for high partial hydrogen pressure services resulting in a less expensive solution than the use of pipe header generally used for over 200 bar service pressure.

COVER PLATE HEADER The cover plate header is used for fluids with high fouling factors up to 40-bar max when frequent mechanical cleaning is required. It is used for very corrosive process fluids so as to periodically check the corrosion allowances. Special cover plate headers using welded gaskets are provided for hydrogen service units in hydro cracking plants.

PIPE HEADER The pipe headers are used for working pressures over 200 bar. The U-bend tubes are welded to the weldolets on the pipe. The welds are heat-treated and X-ray tested

WELDED BONNET HEADER The welded bonnet type is used in certain cases for special services such as ammonia condensers, freon condensers and vacuum steam condensers. One of the advantages of this design is the full welded construction which provides the perfect sealing required for such applications.

DAMAFIN manufactures a wide range of finned tubes (with aluminum fins) for the following industrial sectors:

• Oil refinery • Petrochemical industry • Natural gas treatment • Chemical industry • Power plants • Gas compressor stations The choice of a fin tube either for a new installation or for replacement spares is important as it determines the durability and efficiency of your air-cooled heat exchanger.Once you have decided on the tube traits (diameter, wall thickness, length, material) and the fin spacings, it remains to decide the type of fin-mounting to be used.

BIMETALLIC EXTRUDED A core tube, or liner, the outside surface of which has been previously polished and carefully digressed, is fitted into an aluminum primary tube.This tube-in-tube assembly is then fed into the fining machine equipped with three spindles, 120 degrees spaced and each fitted with a gang disc. Maximum Working Temperature of 300˚ C, excellent Atmospheric Corrosion Resistance and excellent Mechanical Resistance. Such discs, which are stepped in profile and diameter,will first extrude and shape the fin properly and then shrink-fit theprimary tube on its liner. DAMAFIN has developed a high performance bimetallic extruded 11 fins/inch finned tube and an 11.2 inch diameter extruded finned tube which combines a large flow area with a long life duration.

Maximum WorkingTemperature 300˚C

Excellent

Excellent

Atmospheric CorrosionResistance

Mechanical Resistance

“G” EMBEDDED The fin consists of an aluminum strip whose foot-edge is both tension wrapped and embedded into the primary tube wall. This ensues from the combined action of a set of two discs and a ring spacer arranged at right angels to the primary tube. Operating sequences are as follows: maximum working temperature 400˚ C, poor atmospheric corrosion resistance, and acceptable mechanical resistance. The first disc (groover) spins a groove into the tube wall, the ring spacer leads the strip foot-edge into the groove, and finally the second disc (back filler) firmly embeds the strip foot-edge into the groove by “caulking “ the groove lip.

KNURLED “L”An aluminum strip is folded to form an L-shape and then is wound around the base tube. The feet of the fins are joined together and cover the whole tube surface. The root of the fin is knurled simultaneously with the inner tube, thus ensuring a tight contact between the fins and the inner tube. Such result is achieved on the entire width of the fin root, by means of the knurling discs working interdependently.

MANUFACTURING

MANUFACTURING

DAMAFIN products are being utilized by the forefront and the most famous oil, gas, petrochemical,power plants and major engineering companies in all over the world. DAMAFIN will continue to strive its production efficiency and capabilities in order to bring full satisfaction to the esteemed present and future customers.

No. Subject Description Project Customer Consulting Engineers Co.

1 AIR COOLER 6 Bundles Darquain Gas Field NIOC AGIP Iran B.V.Eni (Italy)

2 AIR COOLER 80 Bundles South Pars 6, 7 & 8 NIOC TOYO / IDRO / JGC / DAELIM

3 AIR COOLER 11 Bundles Binak Gas Injection NIOC Chagalesh

4 AIR COOLER 3 Bundles Behran Oil Co. Behran Oil Refinery SAMIC

5 AIR COOLER 10 Bundles PTA - 1 Plant NPC (STPC) DAELIM / Sazeh

6 AIR COOLER 24 Bundles S3 Gas Station NIGC/Sofregaz (France) OIEC

7 AIR COOLER 18 Bundles S6 Gas Station NIGC/Sofregaz (France) OIEC

8 AIR COOLER 88 Bundles 3rd Aromatic Plant N.P.C. (BSPC) PIDEC

9 AIR COOLER 43 Bundles 4th Aromatic Plant N.P.C. (BPC) TOYO / LG / Sazeh

10 AIR COOLER 7 Bundles Esfahan Refinery Esfahan Refinery -

11 AIR COOLER High Press. Bundles Retubing & Repairing Tehran Refinery -

12 AIR COOLER 7 Bundles LAB Revamping ICIIC LG E&C

13 AIR COOLER 2 Bundles Shazand Revamping Arak Refinery -

14 AIR COOLER 20 Bundles Abadan Refinery Expansion Abadan Refinery PIDEC

15 AIR COOLER 14 Bundles Abadan Refinery Expansion Abadan Refinery PIDEC

16 AIR COOLER 4 Bundles Orto Xylene N.P.C. (BSPC) PIDEC

17 AIR COOLER 44 Bundles 11 Turbo-Compressors Station NIGC OTC / ALSTOM (Sweden)

18 AIR COOLER 16 Bundles Kangan Gas Station NIGC OIEC

19 AIR COOLER 30 Bundles Farrashband Gas Station NIGC OIEC

20 AIR COOLER 24 Bundles Dorahan Gas Station NIGC OIEC

21 AIR COOLER 30 Bundle Dehagh Gas Station NIGC OIEC

22 AIR COOLER 4 Bundles Kharg Petro. Comp. Kharg Petro. Comp. -

23 AIR COOLER 10 Bundles 3Rd Ammonia Razi NPC (RPC) PIDEC

24 AIR COOLER 14 Bundles Ammonia & Urea Complex Kermanshah Petro. Co. Namvaran/Kawasaki (Japan)

25 AIR COOLER 30 Bundles Farrashband Ii Gas Station NIGC Tarh O Tabdil

26 AIR COOLER 8 Bundles Shanul, Varavi & Homa Gas Refinery ICOFC Gastech

27 AIR COOLER 1 Bundle Pars Oil Co. Pars Oil Co. -

28 AIR COOLER 16 Bundles Debottlenecking Refinery Bandar Abbas Refinery ODCC/IGC- Snamprogetti

29 AIR COOLER 9 Bundles Behran Oil Co. Behran Oil Refinery -

30 AIR COOLER 8 Bundles Qom III Gas Station NIGC OIEC

31 AIR COOLER 38 Bundles Sirri-NGL Recovery IOOC OIEC

32 AIR COOLER 8 High Press. Bundles NGL 900,1000 NISOC NTS

33 AIR COOLER 30 Bundles Abadeh Gas Station NIGC ITOK

34 AIR COOLER 9 High Press. Bundles Nargessi Gas Gathering & Injection NISOC Payandan

35 AIR COOLER 4 Bundles Bandar Abbas Revamping Bandar Abbas Refinery -

36 AIR COOLER 2 Bundles Tehran Refinery Tehran Refinery Tanootas Taban

37 AIR COOLER 1 Bundle Sarajeh – Qom NIGC Chagalesh

38 AIR COOLER 41 Bundles Shazand Arak Refinery Expansion And Upgrading NIOEC Sazeh/ODCC/SEI

39 AIR COOLER 1 Bundle Pasargad Oil Pasargad Oil -

40 AIR COOLER 17 Bundles Khesht Oil Field ICOFC SADRA

41 AIR COOLER 32 Bundles Tehran Refinery Tehran Refinery Chagalesh

42 AIR COOLER 16 Bundles Sarvestan And Saadat Abad Oil Field ICOFC OEID & ODCC

43 AIR COOLER 27 Bundles Lavan Refinery Lavan Refinery IGC

44 AIR COOLER 13 Bundles Golestan NIPC HAMPA

45 AIR COOLER 13 Bundles Zanjan NIPC HAMPA

46 AIR COOLER 13 Bundles Lordegan NIPC HAMPA

47 AIR COOLER 8 Bundles Lavan Refinery Utility Lavan Refinery IGC

48 AIR COOLER 16 Bundles NGL 1000 NISOC Kherad Sanaat

49 AIR COOLER 18 Bundles Abadan Refinery Abadan Oil Company PIDEC

50 AIR COOLER 109 Bundles South Pars, Phases 17 & 18 POGC IPMI

51 AIR COOLER 4 Bundles LTE-HTD Borzuyeh Peterochemical Sazeh

52 AIR COOLER 2 Bundles Rangin Kaman - Diba Energy Sina

53 AIR COOLER 1 Bundle Serajeh – Qom NIGC / Namvaran ITOK Iran

54 AIR COOLER 270 Bundles Bandar Abbas Refinery L PGSOC Faradast Energy Falat

55 AIR COOLER 32 Bundles Dehagh Station NIGC ITOK Iran

Oil, Gas & Petrochemical Industries

No. Subject Description Project Customer Consulting Engineers Co.

56 AIR COOLER 7 Bundles Behran Behran Oil Refinery -57 AIR COOLER 2 Bundles Gachsaran NISOC Persianrad58 AIR COOLER 1 Bundle Dehloran ICOF Gastech International Co.59 AIR COOLER 2 Bundles HOMS Refinery HOMS Refinery Tanotas & Pavan JV60 AIR COOLER 50 Bundles Yadavaran Oil Field NIOC SINOPEC61 AIR COOLER 20 Bundles Methanol Kaveh Kaveh Group Kaveh Group62 AIR COOLER 2 Bundles Sarkhoon Gas Station NIGC Shima Farmand63 AIR COOLER 4 Bundles NGL-Kharg IOOC Nardis Energy64 AIR COOLER 7 Bundles NGL-Kharg IOOC IRITEC65 AIR COOLER 3 Bundles Abadan Pasargad Oil -66 AIR COOLER 147 Bundles Bandar Abbas Refinery II PGSOC Faradast Energy Falat67 AIR COOLER 32 Bundles Bandar Abbas Refinery III PGSOC Faradast Energy Falat68 AIR COOLER 48 Bundles Khonj & Jahrom Gas Station IEDGC OTC69 AIR COOLER 85 Bundles Methanol Dena Sabalan Petr. Ind. PIDEC70 AIR COOLER 16 Bundles Isfahan Refinery Isfahan Refinery -71 AIR COOLER 36 Bundles Bid Boland II IEDGC Sazeh72 AIR COOLER 6 Bundles Tabriz IGC Chagalesh73 AIR COOLER 2 Bundles Vent Condenser Azarbaijan Methanol Farayand Bokhar74 AIR COOLER 44 Bundles South Pars Phases 22-24 NIOC Ultra System75 AIR COOLER 30 Bundles Arvandan NIOC EIED76 AIR COOLER 10 Bundles Pardis Pardis Petr. Namavaran Delvar77 AIR COOLER 48 Bundles South Pars Phase 19 POGC Mapna-Neyrperse78 AIR COOLER 17 Bundles SBW-Yadavaran NIOC SBW79 AIR COOLER 32 Bundles TP-C MAPNA TUGA80 AIR COOLER 16 Bundles TP-T MAPNA TUGA81 AIR COOLER 5 Bundles West Ethylen NPC-PIDMCO OTCC82 SHELL & TUBE 6 Exchangers Behran Oil Co. Behran Oil Refinery SAMIC83 SHELL & TUBE 36 Exchangers PTA - 1 Plant NPC (STPC) DAELIM / Sazeh 84 SHELL & TUBE 1 Exchanger Esfahan Petrochemical Co. Esfahan P.C. -85 SHELL & TUBE 5 Exchangers Samed Chemical Co. Samed Chemical Co. -86 SHELL & TUBE 1 Exchanger Kermanshah Petrochemical Co. Kermanshah Petro. -

Oil, Gas & Petrochemical Industries

No. Subject Description Project Customer Consulting Engineers Co.

1 AIR COOLER 24 Bundles 6 Closed Cooling Systems - Kerman MAPNA / ANSALDO (Italy) ANSALDO (Italy)2 AIR COOLER 16 Bundles 4 Closed Cooling Systems - Kazeroon MAPNA / ANSALDO (Italy) ANSALDO (Italy)3 AIR COOLER 48 Bundles 12 Closed Cooling Systems - Damavand MAPNA / ANSALDO (Italy) ANSALDO (Italy)4 AIR COOLER 16 Bundles 4 Closed Cooling Systems - Sanandaj MAPNA / ANSALDO (Italy) ANSALDO (Italy)5 AIR COOLER 16 Bundles 4 Closed Cooling Systems - Shirvan MAPNA / ANSALDO (Italy) ANSALDO (Italy)6 AIR COOLER 24 Bundles 6 Closed Cooling Water Systems - (South Of Esfahan) MAPNA TUGA7 AIR COOLER 24 Bundles 6 Closed Cooling Water Systems - Parand MAPNA TUGA8 AIR COOLER 16 Bundles 4 Closed Cooling Water Systems - Orumieh MAPNA TUGA9 AIR COOLER 8 Bundles 2 Closed Cooling Water Systems - Shirvan MAPNA TUGA10 AIR COOLER 24 Bundles 6 Closed Cooling Water Systems - Jahrom MAPNA TUGA11 AIR COOLER 24 Bundles 6 Closed Cooling Systems - Toos MAPNA TUGA12 AIR COOLER 16 Bundles 4 Closed Cooling Water Systems - Ardebil MAPNA TUGA13 AIR COOLER 16 Bundles 4 Closed Cooling Systems - Fajr Il MAPNA TUGA14 AIR COOLER 24 Bundles 6 Closed Cooling Water Systems - Ali Abad MAPNA TUGA15 AIR COOLER 8 Bundles 2 Closed Cooling Water Systems - Teshrin MAPNA TUGA16 AIR COOLER 8 Bundles 2 Closed Cooling Water Systems - Kashan MAPNA TUGA17 AIR COOLER 16 Bundles 4 Closed Cooling Systems - Zanjan & Semnan MAPNA TUGA

18 AIR COOLER 32 Bundles 8 Closed Cooling Water Systems - Orumieh,Ardebil & Kermanshah MAPNA TUGA

19 AIR COOLER 8 Bundles 2 Closed Cooling Water Systems - Khoram Shahr MAPNA TUGA20 AIR COOLER 16 Bundles Zone II MAPNA TUGA21 AIR COOLER 48 Bundles Hot Zone MAPNA TUGA

Power Station