w w w . i r e n e n e r g i a . i t S U P P L E M E N T A R Y A N D B A C K - U P P L A N T P O L Y T E C H N I C

Iren Energia S.p.A.Corso Svizzera, 9510143 Torino - ItalyTel. +39 011 5549 111Fax +39 011 53 83 13

Iren Energia’s core businesses are the production and distribution of electricity and the pro-

duction of thermal energy for district heating purposes.

Iren Energia constantly pursues its objectives, which are sustainable development, responsi-

ble use of energy, innovation, reliability of the services provided and a close relationship with

the areas in which it operates.

The Polytechnic supplementary and back-up plant is part of the Iren Energia integrated

cogeneration and district heating system, which covers 55% of the entire heating

requirement of Turin, making it the city with the largest district heating system

in Italy and one of the largest in Europe (with a heated volume of 55 million

cubic metres, that is 500,000 people living in Turin).

The function of the Polytechnic plant is to guarantee the

quality, also in terms of comfort, of the service

provided to customers resident in the centre of Turin, in particular at the peak heat demand

times in the morning and on particularly cold winter days.

One of it most important features is the heat accumulation system, which optimizes the use

of the heat produced in cogeneration mode at night time, thus reducing the operating time of

the steam generators housed on the plant.

In view of its position near the centre of Turin, an area in which some

requalification projects are to be implemented, the Polytechnic plant was built with

a prestigious sail-shaped roof

designed by the architect Jean-Pierre Buffì (Buffì Associés,

Paris), equipped with a special lighting system

to enhance its artistic value.

Energy and Design•

octo

ber

2013

Quality and Innovation.

w w w . i r e n e n e r g i a . i t S U P P L E M E N T A R Y A N D B A C K - U P P L A N T P O L Y T E C H N I C

Iren Energia S.p.A.Corso Svizzera, 9510143 Torino - ItalyTel. +39 011 5549 111Fax +39 011 53 83 13

Iren Energia’s core businesses are the production and distribution of electricity and the pro-

duction of thermal energy for district heating purposes.

Iren Energia constantly pursues its objectives, which are sustainable development, responsi-

ble use of energy, innovation, reliability of the services provided and a close relationship with

the areas in which it operates.

The Polytechnic supplementary and back-up plant is part of the Iren Energia integrated

cogeneration and district heating system, which covers 55% of the entire heating

requirement of Turin, making it the city with the largest district heating system

in Italy and one of the largest in Europe (with a heated volume of 55 million

cubic metres, that is 500,000 people living in Turin).

The function of the Polytechnic plant is to guarantee the

quality, also in terms of comfort, of the service

provided to customers resident in the centre of Turin, in particular at the peak heat demand

times in the morning and on particularly cold winter days.

One of it most important features is the heat accumulation system, which optimizes the use

of the heat produced in cogeneration mode at night time, thus reducing the operating time of

the steam generators housed on the plant.

In view of its position near the centre of Turin, an area in which some

requalification projects are to be implemented, the Polytechnic plant was built with

a prestigious sail-shaped roof

designed by the architect Jean-Pierre Buffì (Buffì Associés,

Paris), equipped with a special lighting system

to enhance its artistic value.

Energy and Design•

octo

ber

2013

Quality and Innovation.

w w w . i r e n e n e r g i a . i t S U P P L E M E N T A R Y A N D B A C K - U P P L A N T P O L Y T E C H N I C

Iren Energia S.p.A.Corso Svizzera, 9510143 Torino - ItalyTel. +39 011 5549 111Fax +39 011 53 83 13

Iren Energia’s core businesses are the production and distribution of electricity and the pro-

duction of thermal energy for district heating purposes.

Iren Energia constantly pursues its objectives, which are sustainable development, responsi-

ble use of energy, innovation, reliability of the services provided and a close relationship with

the areas in which it operates.

The Polytechnic supplementary and back-up plant is part of the Iren Energia integrated

cogeneration and district heating system, which covers 55% of the entire heating

requirement of Turin, making it the city with the largest district heating system

in Italy and one of the largest in Europe (with a heated volume of 55 million

cubic metres, that is 500,000 people living in Turin).

The function of the Polytechnic plant is to guarantee the

quality, also in terms of comfort, of the service

provided to customers resident in the centre of Turin, in particular at the peak heat demand

times in the morning and on particularly cold winter days.

One of it most important features is the heat accumulation system, which optimizes the use

of the heat produced in cogeneration mode at night time, thus reducing the operating time of

the steam generators housed on the plant.

In view of its position near the centre of Turin, an area in which some

requalification projects are to be implemented, the Polytechnic plant was built with

a prestigious sail-shaped roof

designed by the architect Jean-Pierre Buffì (Buffì Associés,

Paris), equipped with a special lighting system

to enhance its artistic value.

Energy and Design•

octo

ber

2013

Quality and Innovation.

Heat accumulators

Demineralized water tank Boiler room

The Polytechnic supplementary and back-up plant comprises

three 85 MW water-tube steam generators equipped with 3.9

MW smoke heat recuperators.

The heat for the district heating network is produced by a heat

exchanger with a thermal capacity of 255 MW.

The high flexibility of the three generators enables them to

handle all thermal loads on a seasonal and daily basis.

The plant also includes a heat accumulation system with a

capacity of 2,500 cubic metres capable of optimizing the heat

produced in cogeneration mode at night time, thus allowing

the overall operating time of the boilers to be reduced.

The superheated water for the district heating network is kept

circulating by a pumping unit made up of four pumps with a

capacity of 1,700 cubic metres/hour each.

The system comprises another three pumping units, each

made up of three pumps with a capacity of 1,700 cubic

metres/hour, for transferring the district heating water to the

end-user devices.

The plant was built by SES/Demont, a temporary association

of companies.

Type• “D” water-tube• natural circulation, horizontal smoke path

Nominal thermal power 85 MWDesign pressure 16 bars

Type single-pass tube nest

Nominal thermal power 255 MWDesign pressure 25 bars

CHARACTERISTICS OF EACH STEAM GENERATOR

CHARACTERISTICS OF HEAT EXCHANGERS

Heat accumulators

Demineralized water tank Boiler room

The Polytechnic supplementary and back-up plant comprises

three 85 MW water-tube steam generators equipped with 3.9

MW smoke heat recuperators.

The heat for the district heating network is produced by a heat

exchanger with a thermal capacity of 255 MW.

The high flexibility of the three generators enables them to

handle all thermal loads on a seasonal and daily basis.

The plant also includes a heat accumulation system with a

capacity of 2,500 cubic metres capable of optimizing the heat

produced in cogeneration mode at night time, thus allowing

the overall operating time of the boilers to be reduced.

The superheated water for the district heating network is kept

circulating by a pumping unit made up of four pumps with a

capacity of 1,700 cubic metres/hour each.

The system comprises another three pumping units, each

made up of three pumps with a capacity of 1,700 cubic

metres/hour, for transferring the district heating water to the

end-user devices.

The plant was built by SES/Demont, a temporary association

of companies.

Type• “D” water-tube• natural circulation, horizontal smoke path

Nominal thermal power 85 MWDesign pressure 16 bars

Type single-pass tube nest

Nominal thermal power 255 MWDesign pressure 25 bars

CHARACTERISTICS OF EACH STEAM GENERATOR

CHARACTERISTICS OF HEAT EXCHANGERS

Heat accumulators

Demineralized water tank Boiler room

The Polytechnic supplementary and back-up plant comprises

three 85 MW water-tube steam generators equipped with 3.9

MW smoke heat recuperators.

The heat for the district heating network is produced by a heat

exchanger with a thermal capacity of 255 MW.

The high flexibility of the three generators enables them to

handle all thermal loads on a seasonal and daily basis.

The plant also includes a heat accumulation system with a

capacity of 2,500 cubic metres capable of optimizing the heat

produced in cogeneration mode at night time, thus allowing

the overall operating time of the boilers to be reduced.

The superheated water for the district heating network is kept

circulating by a pumping unit made up of four pumps with a

capacity of 1,700 cubic metres/hour each.

The system comprises another three pumping units, each

made up of three pumps with a capacity of 1,700 cubic

metres/hour, for transferring the district heating water to the

end-user devices.

The plant was built by SES/Demont, a temporary association

of companies.

Type• “D” water-tube• natural circulation, horizontal smoke path

Nominal thermal power 85 MWDesign pressure 16 bars

Type single-pass tube nest

Nominal thermal power 255 MWDesign pressure 25 bars

CHARACTERISTICS OF EACH STEAM GENERATOR

CHARACTERISTICS OF HEAT EXCHANGERS

Heat accumulators

Demineralized water tank Boiler room

The Polytechnic supplementary and back-up plant comprises

three 85 MW water-tube steam generators equipped with 3.9

MW smoke heat recuperators.

The heat for the district heating network is produced by a heat

exchanger with a thermal capacity of 255 MW.

The high flexibility of the three generators enables them to

handle all thermal loads on a seasonal and daily basis.

The plant also includes a heat accumulation system with a

capacity of 2,500 cubic metres capable of optimizing the heat

produced in cogeneration mode at night time, thus allowing

the overall operating time of the boilers to be reduced.

The superheated water for the district heating network is kept

circulating by a pumping unit made up of four pumps with a

capacity of 1,700 cubic metres/hour each.

The system comprises another three pumping units, each

made up of three pumps with a capacity of 1,700 cubic

metres/hour, for transferring the district heating water to the

end-user devices.

The plant was built by SES/Demont, a temporary association

of companies.

Type• “D” water-tube• natural circulation, horizontal smoke path

Nominal thermal power 85 MWDesign pressure 16 bars

Type single-pass tube nest

Nominal thermal power 255 MWDesign pressure 25 bars

CHARACTERISTICS OF EACH STEAM GENERATOR

CHARACTERISTICS OF HEAT EXCHANGERS

w w w . i r e n e n e r g i a . i t S U P P L E M E N T A R Y A N D B A C K - U P P L A N T P O L Y T E C H N I C

Iren Energia S.p.A.Corso Svizzera, 9510143 Torino - ItalyTel. +39 011 5549 111Fax +39 011 53 83 13

Iren Energia’s core businesses are the production and distribution of electricity and the pro-

duction of thermal energy for district heating purposes.

Iren Energia constantly pursues its objectives, which are sustainable development, responsi-

ble use of energy, innovation, reliability of the services provided and a close relationship with

the areas in which it operates.

The Polytechnic supplementary and back-up plant is part of the Iren Energia integrated

cogeneration and district heating system, which covers 55% of the entire heating

requirement of Turin, making it the city with the largest district heating system

in Italy and one of the largest in Europe (with a heated volume of 55 million

cubic metres, that is 500,000 people living in Turin).

The function of the Polytechnic plant is to guarantee the

quality, also in terms of comfort, of the service

provided to customers resident in the centre of Turin, in particular at the peak heat demand

times in the morning and on particularly cold winter days.

One of it most important features is the heat accumulation system, which optimizes the use

of the heat produced in cogeneration mode at night time, thus reducing the operating time of

the steam generators housed on the plant.

In view of its position near the centre of Turin, an area in which some

requalification projects are to be implemented, the Polytechnic plant was built with

a prestigious sail-shaped roof

designed by the architect Jean-Pierre Buffì (Buffì Associés,

Paris), equipped with a special lighting system

to enhance its artistic value.

Energy and Design•

octo

ber

2013

Quality and Innovation.