Boldrocchi Heat Exchange Division

Heat Exchangers Interactive table of contents Historical notes

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Present situation

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Electrical machine cooling

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• Power

& distribution transformers oil air coolers

• Industrial

transformers oil air coolers

• Industrial

transformers oil water coolers

• Cast

resin transformers afwf coolers

• Component

for power transformers

4 5 6 8 9

• A.C./D.C.

motor coolers 10

• Generators

coolers

12

Air cooled heat exchangers

14

Technology

18

R&D

19

Main customers

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Contacts

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HISTORICAL NOTES On the 3rd of March 1909 LUIGI BOLDROCCHI established the activity with the first orders for the supply of ten centrifugal fans.

In 1911 the Officine Termo Meccaniche BOLDROCCHI was set up in Milan with a manufacturing area of 3000 square meters.

Heat Exchangers

In 1914 the first plant for air pollution control was produced.

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Eng. Luigi Boldrocchi (1880-1949) Founder of the Boldrocchi Company

The company offered a wide range of products including radial and axial fans, fire-tube boilers, coolers, dryers, ventilating and heat-exchange units and plants.

In 1926, the licence for the manufacture of finned tubes was acquired in the USA and the production of extended surface heat-exchangers was developed.

In the twenties and thirties the company becomes a regular supplier of the main Italian industrial groups, the Ministry of Defence, naval yards and State Railways.

The first complete equipment to cool a power transformer was developed and supplied in 1931.

In the post-war period, the activity was carried on by GIULIANO BOLDROCCHI who progressively abandoned standard production to concentrate on tailor made equipment for specific industrial fields such as: power generation, electromechanical industry and major shipbuilders.

In 1970, a new factory was built and, with some later extensions, forms the present headquarter.

In the early 80’s, supplies for the nuclear sector induced the company to introduce a Quality Assurance System. From then on, the product range has been enlarged, particularly for process air coolers and steam condensers. In the environmental field, two independent divisions have been established: Aeroto, part of the group since 1994 keeps the original name of the company Aeroto, active since 1952 in industrial noise protection and gas turbine ancillaries.

Ecologia, a fusion of our traditional technology with the expertise of De Cardenas, purchased in 1997 and active since 1926 in air pollution control and industrial fans.

Boldrocchi has become a heavy-duty fan leader in the world making the most of its centenary expertise with the ones of De Cardenas and Marelli In 2006 a joint-venture manufacturing company has been set up in India.

Techincal drawing of OFAF cooler ROT G VI 800 kW

OFAF cooler series ROT 48 supplied in 1948

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PRESENT SITUATION In three separate workshops with a total 27.000 square meter manufacturing area, Boldrocchi employs 300 staff, among which 100 are technicians.

The shops are equipped with thermal, acoustic and aeraulic test facilities.

Heat Exchangers

Boldrocchi production is divided into four main lines: heat exchange (exchangers and coolers), fans, industrial noise protection and air pollution control. Today production is featured by highly specialised technical contents, many decades of 'on site' experiences, flexibility in design and in production together with high quality standards.

Supplies are tailor made to fulfil all Customers’ specific requests. Boldrocchi Quality system is certified according to ISO 9001 since 1993 and according to ASME Code since 1998.

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A wide range of materials are usually used: steel and copper alloys, aluminium, titanium and plastic materials; more than 200 welding procedures have been qualified. The products are subject to intermediate and final testing, witnessed by the Customers.

EXCHANGERS Air coolers for refinery service and for other industrial purpose Shell and tube heat exchangers Surface condenser Gas heaters and coolers Air pre-heaters Finned tube coolers and heaters.

POWER TRANSFORMER COOLERS Oil to Air coolers Oil to Water coolers single tubes Oil to Water cooler double tubes Low noise fans Axial and radial pumps

MOTORS AND GENERATORS COOLERS Air-air coolers and air-water coolers Explosion proof and special equipment Complete equipment with coolers, hoods, fans, filters and silencers Hydrogen coolers Oil bearings coolers Heavy duty axial fans RADIAL FANS For industrial application Flow rate : up to 600 m 3/s Pressure : up to 80 kPa Shaft power : up to 8.000 kW Temperature : up to 850 °C Tip speed : up to 300 m/s Use of special materials Gas tightness for special fluids Wear and corrosion design

AXIAL FANS Variable pitch blades High efficiency Use of special materials AEROTO DIVISION Gas turbine air intake Gas turbine exhaust systems with diverters, silencers and stacks Absorption and resonance silencers Silencers for gas exhaust of internal combustion engines Acoustic enclosures complete with auxiliary plants ECOLOGIA DIVISION Fabric filters Electrostatic precipitators Scrubbers Mechanical collectors Gas coolers and conditioning towers Hot gas ducts Dust handling Bag filters and ESP revamping Gas cleaning plants enhancement Planned maintenance services SERVICE DIVISION Problem solving Field measurements Rebuilds and upgrades Revamping of existing Component upgrade and overhaul Commissioning and erection supervision Periodic and preventive maintenance

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POWER & DISTRIBUTION TRANSFORMER OIL AIR COOLERS During 1931 Boldrocchi tested and manufactured the first OFAF transformer oil cooler and since 1948 an engineering department has been exclusively devoted to large electrical machines cooling:

Heat Exchangers

Static electrical machine Large power transformers Distribution transformers Reactors Industrial and furnace transformers

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& distribution transformers oil air coolers

Rotating electrical machine Motors Generators More than seventy years of experience in this specific field allows Boldrocchi to offer each customer the best solutions matching all the requirements and to optimize reliability, performance and costs.

Test facilities are equipped to check the thermal efficiency of the coolers by using dielectric oil or water and air to guarantee a reliable know-how and the requested performances.

• Power

• Industrial

transformers oil air coolers

• Industrial

transformers oil water coolers

• Cast

resin transformers afwf coolers

• Component

for power transformers

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The most used coolers’ prototypes have been approved with thermal and noise tests witnessed by official boards and customers.

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A distinctive feature of Boldrocchi lies in its own expertise to design and to manufacture all the main components of a cooler: the finned tubes, the heat exchanger, the fan, the circulating pump and the electrical devices.

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More than 15.000 Boldrocchi Oil Air coolers have been supplied in the latest fifty years.

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• A.C./D.C.

motor coolers 10

• Generators

coolers

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Air cooled heat exchangers

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Technology

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R&D

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Main customers

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Contacts

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Power Transformer Equipped with No. 4 x 240 kW Special Design Oil Air Coolers skid assembled with oil pumps and control devices.

ENEL - Autotransformer 250 MVA Equipped with No. 4 x 240 kW tank mounted Low Noise Oil Air Coolers ROT/S - 65 dB(A) Power Transformer Equipped with No. 2 x 250 kW tank mounted Oil Air coolers laid upon the other. Horizontal arrangement and horizontal air flow stream

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INDUSTRIAL TRANSFORMER OIL AIR COOLERS Heat Exchangers

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• Power

& distribution transformers oil air coolers

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• Industrial

transformers oil air coolers 5

• Industrial

transformers oil water coolers

• Cast

resin transformers afwf coolers

• Component

for power transformers

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• A.C./D.C.

motor coolers 10

• Generators

coolers

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TRANSFORMER OIL AIR COOLERS (OFAF /ODAF) Power Rating range 100 ÷ 800 kW/each Acoustic Pressure Level range 80 ÷ 55 dB(A)/each Number of axial fans No.1 ÷ No. 6 /each Air draught Induced Forced Cooler Mounting Tank mounted Separate battery Cooler Arrangement Vertical / Horizontal air flow stream Horizontal / Horizontal air flow stream Horizontal / Vertical air flow stream The cooler in standard execution consists of a finned tubes bundle made of embedded type finned tubes, to ensure complete homogeneity and adhesion between tube and fins and a perfect heat transfer.

Special finning machines are involved for the production of finned tubes, available in various geometries and different material combination. (� standard)

FINNED TUBES Aluminium / Aluminium � Copper / Aluminium Copper / Copper C-Steel / Aluminium Stainless Steel / Aluminium

TUBE PLATES Aluminium � C-Steel Stainless steel

Particular attention is paid to site atmosphere for choosing the suitable material

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Aluminium Plant Pechiney N.° 2 transformers each one equipped with separate battery No. 3 x 300 kW power rating Oil/Air Cooler No. 3 x 510 kW power rating Oil/Air Cooler Hindalco Steel Plant (India) Industrial transformers equipped with separate battery No. 3 x 435 kW Oil Air Coolers

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Power Transformer Equipped with No. 2 x 500 kW Oil Air coolers each one on two cooling section

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INDUSTRIAL TRANSFORMER OIL WATER COOLERS The transformer oil is warmed by the heat losses of the windings.

Heat Exchangers

The oil is conveyed into the shell side of the cooler.

Baffles are used to lead the oil flow around the tubes in cross flow. The cooling side on the tube side is divided in two or more paths. Two water paths are usually used.

Interactive table of contents

Features of single tube cooler execution When using the single tube coolers the oil pressure must exceeds the water pressure in any operation, to avoid water infiltration into the oil circuit in case of leakage.

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Features of double tube cooler execution Unlike single tube coolers, this execution of the tube bundle requires double tubes and doubled tube-plates.

This special safety design enables the operation with cooling water pressure not limited by the oil pressure.

Double tube coolers in standard design are suitable for a water pressure of 10 bar.

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In case of leakage, water or oil are led into the chamber between the double tubes and the two tube plates, therefore the double tube system always prevents water and oil from mixing.

& distribution transformers oil air coolers

• Power

• Industrial

transformers oil air coolers

transformers oil water coolers 6 resin transformers afwf coolers

• Component

for power transformers

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• A.C./D.C.

motor coolers 10

• Generators

coolers

Air cooled heat exchangers

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The double tube design is the most valid solution to protect the transformer, especially when, using sea or industrial water, the site maintenance is not easy. Should a leakage happen, an alarm is provided by a magnetic float switch screwed to a collecting box fitting the cooler.

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• Industrial • Cast

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EAF Transformer Equipped with No. 3 x 150 kW OFWF coolers single tube execution EAF Transformer Equipped with No. 2 x 450 kW OFWF coolers single tube execution EAF Transformer 50 MVA – 35000 / 350 ÷ 500 V Equipped with No 2 x 350 kW RDT 47/220 OFWF coolers double tube execution

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TRANSFORMER OIL TO WATER COOLERS (OFWF) Power Rating range 60 ÷ 2000 kW/each Number of radial pumps No.1 ÷ No. 2/each Cooler Mounting Vertical Tank mounted Horizontal Tank mounted Separate battery Cooler execution Fixed tube plates (Tema BEM) Floating tube plates (Tema BEW) Single tubes Double tubes

Heat Exchangers Interactive table of contents

For both the above executions (single & double tubes) and depending on the cooling water the following materials are used (� standard).

Historical notes

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Present situation

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Electrical machine cooling

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& distribution transformers oil air coolers

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• Power

• Industrial

transformers oil air coolers

4 5

• Industrial

transformers oil water coolers 6

• Cast

resin transformers afwf coolers

• Component

for power transformers

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• A.C./D.C.

motor coolers 10

• Generators

coolers

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Air cooled heat exchangers

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Technology

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Contacts

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SINGLE TUBES EXECUTION

DOUBLE TUBES EXECUTION

Tubes Outer Tubes on Oil Side Copper � Copper � Admiralty brass C-Steel � Cu/Ni 90/10 or 70/30 Inner Tubes on Water Side Stainless Steel Copper � Titanium Admiralty brass Cu/Ni 90/10 or 70/30 Stainless Steel Titanium Tube Plates C-Steel � Tube Plates Naval brass C-Steel � or Muntz metal Naval brass or Muntz metal Cu/Ni 90/10 or 70/30 Cu/Ni 90/10 or 70/30 Stainless Steel Stainless Steel Titanium Titanium For naval application can be supplied OFWF coolers according to the requirements of the main marine registers as: BV Bureau Veritas DNV Det Norske Veritas LRS Lloyds Register of Shipping RINA Registro Italiano Navale ABS American Bureau of Shipping

EAF Transformer 50 MVA - 33000/363 ÷ 680 V Equipped with No. 2 x 400 kW OFWF coolers single tube execution EAF Transformer 84 MVA - 30000/490 ÷ 990 V Equipped with No. 2 x 450 kW OFWF coolers double tube execution

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Furnace Transformer Equipped with No. 1 x 350 OFWF cooler double tube execution with n.° 2 oil pumps, instruments and terminal box

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CAST RESIN TRANSFORMER AFWF COOLERS Heat Exchangers Interactive table of contents Historical notes

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& distribution transformers oil air coolers

For both the above executions (single & double tubes) and depending on the cooling water the following materials are used (� standard).

• Power

• Industrial

transformers oil air coolers

• Industrial

transformers oil water coolers

4 5 6

• Cast

resin transformers afwf coolers 8

• Component

for power transformers

SINGLE TUBES EXECUTION

DOUBLE TUBES EXECUTION

Tubes Copper � Admiralty brass Cu/Ni 90/10 or 70/30 Stainless Steel Titanium Fins Copper � Aluminium � Tube Plates C-Steel � Naval brass or Muntz metal Cu/Ni 90/10 or 70/30 Stainless Steel Titanium

Outer Tubes on Air Side Copper � Inner Tubes on Water Side Copper Admiralty brass � Cu/Ni 90/10 or 70/30 Stainless Steel Titanium Fins Copper � Aluminium Tube Plates on Air Side C-Steel � Naval brass Stainless Steel Titanium Tube Plates on Water Side Naval brass � or Muntz Metal Cu/Ni 90/10 or 70/30 Stainless Steel Titanium

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• A.C./D.C.

motor coolers 10

• Generators

coolers

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Technology

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Main customers

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Contacts

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For naval application can be supplied OFWF coolers according to the requirements of the main marine registers as: BV Bureau Veritas DNV Det Norske Veritas LRS Lloyds Register of Shipping RINA Registro Italiano Navale ABS American Bureau of Shipping

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Air cooled heat exchangers

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HYDRO-COOLERS (AFWF) Power Rating range 3 ÷ 100 kW/each Number of radial fans No.2 in operation/each � No.1+ No.1 stand-by Cooler execution Single tubes Double tubes �

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2 x 12,5 kW hydro-coolers double tube executions 2 x 25 kW hydro-coolers double tube executions 2 x 25 kW hydro-coolers double tube executions. Detail of motor removable radially

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COMPONENTS FOR POWER TRANSFORMERS RADIAL CIRCULATING OIL PUMPS Single block execution oil pump with immersed motor, provided with correct rotation alarm device Capacity range: 6 ÷ 44 lt/s Frequency: 50 Hz ÷ 60 Hz Feeding voltage: 230 Volt ÷ 690 Volt

Heat Exchangers Interactive table of contents Historical notes

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Present situation

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Electrical machine cooling

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• Power

& distribution transformers oil air coolers

• Industrial

transformers oil air coolers

• Industrial

transformers oil water coolers

• Cast

resin transformers afwf coolers

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INLINE CIRCULATING OIL PUMPS Single block execution oil pump with immersed motor Capacity range: 16 ÷ 115 lt/s Frequency: 50 Hz ÷ 60 Hz Feeding voltage: 230 Volt ÷ 690 Volt

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• Component

for power transformers 9

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motor coolers 10

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AXIAL FLOW FANS (ONAF Cooling System) Acoustic Pressure Level range: 70 dB(A) ÷ 53 dB(A) Standard range: 740 mm | 1000 mm | 1250 mmm Motor poles range: 6 | 8 | 10 | 12 | 14 | 16 Execution range: Steel galvanized Stainless steel Aluminium

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Transformer Oil Radial Pump Series LB and sectional view Transformer Oil Axial Pump Series DN and sectional view Axial Flow Fan VE740 Approved by Enel

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A.C./D.C. MOTOR COOLERS More than 26.000 heavy duty electric motors are cooled with Boldrocchi equipment. Particular attention is paid to meet different requirements connected with cooling: dimensions, interface, pressure drop, materials, vibrations, noise, consumption, reliability and maintenance.

Heat Exchangers

Innumerable configurations have been designed.

C.A.D./C.A.M. solutions have been adopted to reduce delivery time, even for special solutions.

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& distribution transformers oil air coolers

The production range includes: Cooling groups for D.C. motors These units, directly coupled to the motor, are usually composed of a steel hood containing the water/air heat exchanger, an air filter and a fan. All the components are easily removable from the casing for inspections and maintenance; Air-Air cooling groups These units are composed of two separated circuits with two fans and an exchanger, where the closed circuit air is cooled by the external air.

Air-Water cooling groups for A.C. motors These units are equipped with one or more air/water exchangers, fan and noise insulating systems.

• Power

• Industrial

transformers oil air coolers

• Industrial

transformers oil water coolers

• Cast

resin transformers afwf coolers

• Component

for power transformers

• A.C./D.C.

4 5 6

The water-air coolers are supplied both as coil type and with finned tubes.

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Several tube materials are available: copper, copper alloys, stainless steels and titanium.

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For heavy-duty applications, such as offshore platforms, a double tube design is suggested, with titanium internal tube.

motor coolers 10

• Generators

coolers

The groups are equipped with control devices, special versions and explosion proof type are supplied as well.

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CACA generator cooler 585 kW power rating, equipped with No. 4 Comet axial fans.

CACA generator cooler 300 kW power rating, equipped with No. 4 Comet axial fans.

CACA generator cooler 300 kW power rating, Inlet silencers view.

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GENERATOR COOLERS

A.C./D.C. MOTOR COOLERS

on range for generator coolers includes:

AIR TO AIR COOLERS (CACA) Power Rating range 200 ÷ 1.000 kW/each Number of axial fans No. 2 ÷ No. 3 in operation/each � + No. 1 stand-by/each

r coolers available in several designs and with aterials: copper alloys, stainless steel and titanium.

Heat Exchangers

for hydrogen in closed circuits. These units are y sturdy, have considerable dimensions and are o operate in presence of high vibrations.

Interactive coil heat-exchangers to cool the bearing lubricating table contents generators andof turbines.

The cooling unit standard execution is provided with silencers and fans in vertical or horizontal arrangement.

UNIT EXECUTION Tubes Aluminium alloy C-Steel Stainless steel Tube Plates C-Steel Stainless Steel Housing C-Steel Stainless Steel Silencers Provided with panel protected by perforated sheet in galvanized C-Steel or Stainless Steel

head axial fans for cooling air circulation. uctionHistorical and the impeller are designed to operate notes 2 with ng speed, up to 3.000 rpm and discontinuously. Strict e tests are carried out in excess of the over speed Hz. Present situation 3

Electrical machine cooling

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• Power

& distribution transformers oil air coolers

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• Industrial

transformers oil air coolers

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transformers oil water coolers

• Cast

resin transformers afwf coolers

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• Component

for power transformers

• A.C./D.C.

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motor coolers 10 CACW eexd motor

• Generators coolers 12 cooler equipped with instruments for air pressurization

Air cooled heat exchangers 14 CACW D.C. motor cooler 130 kW power rating; equipped with external fan and filter

Technology R&D

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CACW generator cooler 580 kW 19 power rating

Main customers

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CACW double tube coolers for ship propulsion motor 6100 kW Contacts No. 2 x 120 kW cooler power 21 rating, equipped with No. 4 radial fans.

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CACA generator cooler equipped with No. 3 vertical axial fans.

CACW cooler for synchronous motor, complete with piping, valves and leakage detector system

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GENERATOR COOLERS

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The production range for generator coolers includes:

Heat Exchangers

Coolers for hydrogen in closed circuits. These units are particularly sturdy, have considerable dimensions and are designed to operate in presence of high vibrations.

Interactive table of contents

Circular coil heat-exchangers to cool the bearing lubricating oil of large generators and turbines.

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& distribution transformers oil air coolers

Air-Water coolers available in several designs and with different materials: copper alloys, stainless steel and titanium.

Medium head axial fans for cooling air circulation.

The construction and the impeller are designed to operate with high rotating speed, up to 3.000 rpm and discontinuously. Strict acceptance tests are carried out in excess of the over speed test at 75 Hz.

• Power

• Industrial

transformers oil air coolers

• Industrial

transformers oil water coolers

• Cast

resin transformers afwf coolers

• Component

for power transformers

• A.C./D.C.

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motor coolers 10

• Generators

coolers

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CACW eexd motor cooler equipped with instruments for air pressurization

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6 CACW D.C. motor cooler 130 kW power rating; equipped with external fan and filter CACW generator cooler 580 kW power rating

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CACW double tube coolers for ship propulsion motor 6100 kW No. 2 x 120 kW cooler power rating, equipped with No. 4 radial fans.

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GENERATOR COOLERS

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AIR TO WATER (CACW) Power Rating range 80 ÷ 900 kW/each Number of radial fans No. 1 ÷ No. 2 operation/each No. 1 ÷ No. 2 in operation/each + No. 1 stand-by/each Cooler execution Single tubes Double tubes

Heat Exchangers Interactive table of contents Historical notes

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Present situation

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Electrical machine cooling & distribution transformers oil air coolers

For both the above executions (single & double tubes) and depending on the cooling water the following materials are used (� standard).

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• Power

• Industrial

transformers oil air coolers

• Industrial

transformers oil water coolers

• Cast

resin transformers afwf coolers

• Component

for power transformers

• A.C./D.C.

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4

8 9

motor coolers 10

• Generators

coolers

SINGLE TUBES EXECUTION

DOUBLE TUBES EXECUTION

Tubes Copper � Admiralty brass Cu/Ni 90/10 or 70/30 Stainless Steel Titanium Fins Copper � Aluminium � Tube Plates C-Steel � Naval brass or Muntz metal Cu/Ni 90/10 or 70/30 Stainless Steel Titanium

Outer Tubes on Air Side Copper � Inner Tubes on Water Side Copper Admiralty brass � Cu/Ni 90/10 or 70/30 Stainless Steel Titanium Fins Copper � Aluminium � Tube Plates on Air Side C-Steel � Naval brass Stainless Steel Titanium Tube Plates on Water Side C-Steel � Naval brass or Muntz metal Cu/Ni 90/10 or 70/30 Stainless Steel Titanium

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Air cooled heat exchangers

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CACW double tube cooler equipped with No. 4 coolers, No. 4 fans and induction motors.

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CACW cooler for A.C. motor.

Cooling tubes, tube plates and water headers: titanium

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CACA cooler.

Detail of centralization terminal box CACW double tube sea-water cooler for Derrick drilling motor on off-shore platform

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AIR COOLED HEAT EXCHANGERS Boldrocchi Company designs and manufactures a wide range of air cooled heat exchangers, used worldwide in utilities and industrial applications; serving the petroleum, chemical, gas processing, electrical, power generation, environment and steel industries.

From small coolers for endothermic engines, for compressors and dryers up to several banks of bundles for vapours condensation and for petrochemical processes.

Heat Exchangers Interactive table of contents

The production includes fin fan coolers for:

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Gaseous and liquid hydrocarbons, steam and vapours Water and lube oil closed circuit system High pressure intercooler and aftercooler Compressed air and gases Special applications gas heaters and coolers air pre-heater and heat recuperators With the support of an on-going R&D dep., Boldrocchi can constantly improve its products. A computer aided design network speeds up technical work and enable engineers to examine different approaches and to reach the best solutions.

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High efficiency and low noise fans are provided by the daughter Company COMET, strictly related with our design department.

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Plant: OFF-SHORE WHITE TIGER FIELD (VIETNAM ) N.4 GAS COOLER (Total 24 Tube Bundles) Total Duty: 19.100 kW Design Pressure: 120 bar Total Installed Power: 416 kW Plant: AUGUSTA REFINERY (ITALY) SPLITTER OVERHEAD CONDENSER (Duplex material construction) Duty: 6.400 kW Design Pressure: 6 bar Total Installed Power: 148 Kw REACTOR EFFLUENT COOLER Duty: 3.900 kW Design Pressure: 21.5 bar Total Installed Power: 120 kW Plant: SARPOM REFINERY (ITALY) REACTOR EFFLUENT COOLER Duty: 4.500 kW Design Pressure: 23 bar Total Installed Power: 120 kW

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N.30 WATER GLYCOL CLOSED CIRCUIT COOLERS Six Different Power Plants (IRAN) Total Duty: 73.500 Kw Design Pressure: 6 bar Total Installed Power: 88 kW

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N. 2 CLOSED CIRCUIT WATER COOLERS Plant: Power Barge Project (GHANA) Total Duty: 5.100 kW Design Pressure: 6 bar Total Installed Power: 240 kW

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AIR COOLED HEAT EXCHANGERS All projects involve a process of: thermal design according to current and well established operating techniques and using worldwide recognized software; mechanical design according to the main standard codes such as TEMA, ASME, API and supply of pressure parts stamped with CE, PED or U mark; structural and stress analysis with finite element methods; design solutions for low noise level installations. optimizing the required power, ensuring easy transportation, installation and maintenance.

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To find out the best performance for each case, ensuring heat transfer coefficient combined with low pressure drops, Boldrocchi provides several types of spiral finned tubes.

A variety of base tubes: from 1/2 inch to 2 inch diameters and different metals such as carbon steels, stainless and special steels, copper alloys, aluminium and titanium can be finned with several sizes and materials to satisfy customer and design requirements.

Based on a lot of different fining machines Boldrocchi can supply three basic configurations on finned tubes

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A task force of skilled craftsmen combined with the best welding techniques ensures high quality welding, guaranteed by radiographic, ultrasonic, magnetic and liquid in-depth inspections and, after assembly, hydrostatic and leak testing.

More than 200 welding procedures have been qualified and tested by international Boards.

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LP and HP Compressor Natural Gas Coolers.

Plant: BANGLAN BAY (U.K.).

Duty: 4000 kW Design Pressure: 83 bar Installed Power: 60 kW HP Compressor Natural Gas After coolers.

Plant: CORTEMAGGIORE (ITALY).

Duty: 3800 kW Design Pressure: 206 bar Installed Power: 74 kW

HP Cover Plate Headers.

Plant: ZARQA (JORDAN).

Design Pressure: 60 bar

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LUBE OIL COOLERS Plant: MELLITAH (LIBYA) Duty: 6400 Kw Design Pressure: 13 bar Installed Power: 110 kW

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LUBE OIL COOLER with turbulator promoters inside tubes and external recirculation system Plant: KASHAGAN FIELD DEVELOPMENT (KAZAKHSTAN) Duty: 128 kW Design Pressure: 6 bar Installed Power: 6.6 kW

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TECHNOLOGY

1 Heat Exchangers

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Interactive table of contents Historical notes

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14

Technology

18

R&D

19

Main customers

20

Contacts

21

3

L-footed Fins L-shaped fin wrapped under tension over the outside surface of a tube, with the tube fully covered by the feet between the fins.

Can be used for maximum Design Process Temperature of 130째C KLM- Knurled footed L-shaped fin wrapped under tension over the outside surface of a tube, while the foot of the fin simultaneously pressed into the ribbed outer surface of the tube.

Can be used for maximum Design Process Temperature of 200째C

4

G-Type Boldrocchi Double Tubes

5

Boldrocchi extruded Low Fin Tube (TRUFIN)

5

18

1

G-Type Fins (mechanically embedded) Rectangular cross-section fin wrapped under tension and mechanically embedded in a groove spirally cut into the outside surface of a tube.

Can be used for maximum Design Process Temperature of 400째C

3

2

4

R&D

5 8

Heat Exchangers Interactive table of contents Historical notes

2

Present situation

3

Electrical machine cooling

4

Air cooled heat exchangers

14

Technology

18

R&D

19

Main customers

20

Contacts

21

6

Boldrocchi Test Facilities Heat Run Test witnessed by ENEL Low Noise Transformer Oil Air Cooler 65 dB(A) Power rating ROT/S 300 kW Boldrocchi Test Facilities Heat Run Test Transformer Oil Water Cooler Double Tube Execution Power rating 315 kW Boldrocchi Test Facilities Heat Run Test Air Water Motor Cooler Double Tube Execution Power rating 200 kW

7

Finite Element Analysis Axial fan blades Exchanger headers

5 6 7 8 19

Boldrocchi Group Heat exchangers - Main customers

Heat Exchangers Interactive table of contents

MOTOR AND GENERATOR COOLERS

Linde

ABB Group (Brazil,Canada,Germany,Italy, Spain,Switzerland,Turkey,USA)

ABB Sace Vittuone

Lurgi

ABB Automation Vasteras Svezia

Man Turbo

ABB Oy Electrical Machines Finland

Macchi

ABB Switzerland Ltd Electrical Machines

Polimeri Europa

Acea Aem

Historical notes

2

Present situation

3

Electrical machine cooling

POWER TRANSFORMERS COOLERS

4

Areva (Brazil,United Kingdom) Edipower Edison Enel Enerco Enterprises

Cantarey Reinosa S.A.U. Laurence Scott & Electromotors LTD

Ganz Transelektro

Air cooled heat exchangers

14

Getra

Technology

18

Jst Transformateurs

Imefy

R&D

19

Pauwels Trafo

Main customers

20

Sgb

Contacts

Brush HMA B.V Ridderkerk Netherlands

21

Sea Siemens Group (Austria, Italy) Specialtrasfo Tamini Group Terna Tes Tironi

Lummus Global

Perry Equipment Raffineria Di Roma Saras Sices Siirtec Nigi Snamprogetti Stogit Syrian P.E.E.

AIR COOLER HEAT EXCHANGERS

Techint

ABB Group

Tecnimont

Agip Agippetroli Ansaldo Energia Ansaldo Caldaie Api Burckhardt Cct Dresser Rand Enel Eni Enichem Esso Foster Wheeler Howden Compressors Ingersoll Rand Isg Jordan Petroleum K.T.I. Kuwait Nat. Petroleum Co

Technip Coflexid Termomeccanica Tractebell Uhde

Boldrocchi Group Viale Trento e Trieste 93 - 20853 Biassono (MB) - Italy www.boldrocchi.eu In Italy

Ph. +39 - 0392202.1 Fax +39 - 0392754200 E-mail: boldrocchi@boldrocchi.eu

Heat Exchangers

Ph. +39 - 039617515 Fax +39 - 0396014451 E-mail: boldrocchi@boldrocchi.eu

Interactive table of contents Historical notes

2

Present situation

3

Electrical machine cooling

4

Air cooled heat exchangers

14

Technology

18

R&D

19

Main customers

20

Contacts

21

Ph. +39 - 0392202.700 Fax +39 - 0392753498 E-mail: boldrocchi@boldrocchi.eu

Ph. +39 - 0392202330 Fax +39 - 0392754188 E-mail: boldrocchi@boldrocchi.eu

Ph. +39 - 0396882411 Fax +39 - 0396882531 E-mail: btetorri@btetorri.com

Ph. +39 - 0296790143 Fax +39 - 029693176 E-mail: info@cometfans.com

Foreign branches

ventilateurs - depoussierage

E-mail: bviventilateurs@aol.com E-mail: boldreco@aol.com

E-mail: mbi.eggers@t-online.de GERMANY

joint venture

Registered Office and Factory - Chennai E-mail: india@boldrocchi.org Sales Office - Delhi E-mail: nokesh@boldrocchi.org