3rd GT of the Cogeneration Plant 2013 october
Functional diagram
Steam generator with three pressure levels pressure (bar) capacity (Kg/s) temperature (°C) • AP 104 74 550 G • MP 28 87,4 560 3~ • BP 3,5 9,63 250 www.irenenergia.it MONCALIERI PLANT 3RD GT Gas turbine • Capacity 260 MW Steam turbine • Fuel natural gas • Capacity 138 MW
AP MP BP G 3~ Iren Energia is the company in the Iren Group whose core The plant is made up of two combined-cycle cogenera - businesses are the production and distribution of electri- tion units (2nd GT and 3 rd GT), with an overall electrical city, the production and distribution of thermal energy for capacity of 800 MW and thermal capacity of 520 MW in district heating and the provision of technological services. cogeneration mode, and a 141 MW supplementary and back-up plant. water-cooled condenser Iren Energia constantly pursues its objectives, which are qua- canal lity, reliability, sustainable development, energy efficiency The heat produced by the cogenerators provides district and a close relationship with the areas in which it operates. heating for a total volume of 55 million cubic metres, The 3rd GT is part of the Moncalieri cogeneration plant, which, making Turin the city with the largest district heating sy - Heat exchangers for district together with the Torino Nord plant, supplies Turin’s district stem in Italy. heating • Thermal power 260 MW heating system. • Inlet temperature 70°C • Outlet temperature 120°C district heating
TEST DATA Combined-cycle operation Combined-cycle and cogeneration operation ISO conditions on site ISO conditions on site
• Net electrical power 383 MW • Net electrical power 322 MW • Efficiency 57% • Thermal power 260 MW • Efficiency 87%
Iren Energia S.p.A. Corso Svizzera, 95 10143 Torino - Italy Tel. +39 011 5549 111 Fax +39 011 53 83 13 3rd GT of the Cogeneration Plant 2013 october
Functional diagram
Steam generator with three pressure levels pressure (bar) capacity (Kg/s) temperature (°C) • AP 104 74 550 G • MP 28 87,4 560 3~ • BP 3,5 9,63 250 www.irenenergia.it MONCALIERI PLANT 3RD GT Gas turbine • Capacity 260 MW Steam turbine • Fuel natural gas • Capacity 138 MW
AP MP BP G 3~ Iren Energia is the company in the Iren Group whose core The plant is made up of two combined-cycle cogenera - businesses are the production and distribution of electri- tion units (2nd GT and 3 rd GT), with an overall electrical city, the production and distribution of thermal energy for capacity of 800 MW and thermal capacity of 520 MW in district heating and the provision of technological services. cogeneration mode, and a 141 MW supplementary and back-up plant. water-cooled condenser Iren Energia constantly pursues its objectives, which are qua- canal lity, reliability, sustainable development, energy efficiency The heat produced by the cogenerators provides district and a close relationship with the areas in which it operates. heating for a total volume of 55 million cubic metres, The 3rd GT is part of the Moncalieri cogeneration plant, which, making Turin the city with the largest district heating sy - Heat exchangers for district together with the Torino Nord plant, supplies Turin’s district stem in Italy. heating • Thermal power 260 MW heating system. • Inlet temperature 70°C • Outlet temperature 120°C district heating
TEST DATA Combined-cycle operation Combined-cycle and cogeneration operation ISO conditions on site ISO conditions on site
• Net electrical power 383 MW • Net electrical power 322 MW • Efficiency 57% • Thermal power 260 MW • Efficiency 87%
Iren Energia S.p.A. Corso Svizzera, 95 10143 Torino - Italy Tel. +39 011 5549 111 Fax +39 011 53 83 13 3rd GT of the Cogeneration Plant 2013 october
Functional diagram
Steam generator with three pressure levels pressure (bar) capacity (Kg/s) temperature (°C) • AP 104 74 550 G • MP 28 87,4 560 3~ • BP 3,5 9,63 250 www.irenenergia.it MONCALIERI PLANT 3RD GT Gas turbine • Capacity 260 MW Steam turbine • Fuel natural gas • Capacity 138 MW
AP MP BP G 3~ Iren Energia is the company in the Iren Group whose core The plant is made up of two combined-cycle cogenera - businesses are the production and distribution of electri- tion units (2nd GT and 3 rd GT), with an overall electrical city, the production and distribution of thermal energy for capacity of 800 MW and thermal capacity of 520 MW in district heating and the provision of technological services. cogeneration mode, and a 141 MW supplementary and back-up plant. water-cooled condenser Iren Energia constantly pursues its objectives, which are qua- canal lity, reliability, sustainable development, energy efficiency The heat produced by the cogenerators provides district and a close relationship with the areas in which it operates. heating for a total volume of 55 million cubic metres, The 3rd GT is part of the Moncalieri cogeneration plant, which, making Turin the city with the largest district heating sy - Heat exchangers for district together with the Torino Nord plant, supplies Turin’s district stem in Italy. heating • Thermal power 260 MW heating system. • Inlet temperature 70°C • Outlet temperature 120°C district heating
TEST DATA Combined-cycle operation Combined-cycle and cogeneration operation ISO conditions on site ISO conditions on site
• Net electrical power 383 MW • Net electrical power 322 MW • Efficiency 57% • Thermal power 260 MW • Efficiency 87%
Iren Energia S.p.A. Corso Svizzera, 95 10143 Torino - Italy Tel. +39 011 5549 111 Fax +39 011 53 83 13 Operating range at an ambient T of 15°C 390 e 380 (MW ) 370
360
350
340 Electrical power 330
320
310
300
290
280
270
260
250
240
230
220
rd 210 3 GT of the 200 190 Cogeneration Plant 180 0 20 40 60 80 100 120 140 160 180 200 220 240 260 Thermal power (MW t)
TG 100% TG 75% TG 60%
The 3rd GT of the Moncalieri plant with The 3rd GT, designed to guarantee the The steam generator The steam turbine • Gas turbine with continuous nominal its capacity of 400 MWe was desig - maximum efficiency and minimum Operating conditions load, steam turbine out of order, ma- ned using the very latest technologies environmental impact currently avai- The heat recovery steam generator The condensation steam turbine is The plant will provide optimum perfor- ximum extraction of steam from by- for the simultaneous production of lable, is made up principally of: The gas turbine ximum exhaust gas temperature possi- has the following characteristics: made up of separate high, medium mance under the following main ope- pass system for district heating net- electricity and heat. The unit, with its • Gas turbine that generates more sure and temperature from the steam ble and thus optimum steam conditions • Three pressure levels; and low pressure turbine sections. The internal casing of the LP section is rating conditions: work; thermal capacity of 260 MWt, together than 260 MW of electricity under ISO turbine and/or by-pass system; Functional characteristics The turbine (fed with natural gas) is a also in the partial load range. • Degassing tower built into the cylin- The high pressure turbine section has connected to the casing of the MP sec- nd • Gas turbine with continuous nominal • Gas turbine continuous nominal load, with the upgraded 2 GT, constitutes conditions with an efficiency of over • Unit heater-based heat dissipation single-shaft machine with a 15-stage drical low-pressure body; a barrel-shaped body. The fixed sup- tion by connecting rods to reduce the load, steam turbine in electricity only steam turbine out of order without The functions of the thermoelectric po- the main source of heat for the Turin 39%; system with a capacity of about air compression section (final pressure • High efficiency thermal design with port is situated between the HP and necessary play (thermal expansion). mode without extraction of steam for extraction of steam from bypass sy- wer plant include: district heating system, one of the lar- • Heat recovery steam generator, with 340 MWt, at an ambient temperatu- 17 bars) combined with a 4-stage tur- small-diameter tubes and tabs den- MP turbine sections. The turbine blades provide three-di- the district heating network; stem for district heating network. • Production of electricity and heat for gest in Europe. three pressure levels, fed with hot re of 30°C, for cooling the superhea- bine section. sely arranged in a quincunx confor- The LP turbine section has a dual-flow mensional flow optimization. • Gas turbine with continuous nominal district heating; exhaust gas from the gas turbine ted district heating water, which may The turbine’s hollow shaft, of the type mation; design. The HP and MP valves are compact, nd rd load, steam turbine in cogeneration The plant will, in any case, operate un- • Operation under partial loads above The plant provides the district heating (660 kg/s at a temperature of almost be used by the 2 and 3 GTs, if the with blade holding rings, ensures short • Natural circulation, based on bro- combined valves (regulation and quick mode with maximum extraction of der all the intermediate conditions in- the minimum technical level to allow system with water at a temperature of 600°C), without a smoke bypass flue; water flow from the off-take canal is start-up times (34 minutes from rest to ad-diameter cylindrical bodies with stop valve form a unit). The steam 120 °C, dispatched by the pumping sy- • Condensation steam turbine with a insufficient; steam for district heating network; dicated in the graph above. use of these loads; full load) due to the low thermal inertia TORINO NORD high-efficiency separators and high flows towards the bottom of the con- • Operation of the unit from the central stem to the end user devices through capacity of about 138 MWe and re- and adapts rapidly to variations in the circulation stability in the evapora- denser situated below the turbine. rd control room without any need for the vast underground pipe network. gulated extraction of steam at a low In electricity mode, the 3 GT reaches demand for power with an upward po- tion circuits; Steam for the district heating system any local actions; pressure for the production of heat a total efficiency of over 57%. wer gradient of 13 MW/min. • “Hanging” support to allow free can be extracted from two steam • Protection of all mechanical compo- for the district heating network; In cogeneration mode, its overall effi- The blades of the turbine, subjected to downward expansion of the heat taps on the medium pressure turbi- nents against faults or failures (for • Tube nest condensation system, co- ciency is 87%. extreme stress, are air-cooled internal- exchange elements; ne section. example, in case of gas turbine or ste- oled by the water coming from the ly and protected externally by a cushion • Cold wall closure (insulated internal- off-take canal of the river Po (about am turbine cut-out); of cooling air blown in through laser- POLYTECHNIC ly) with structure and reinforcements • Operation in a single cycle with by- 7,000 kg/s); drilled holes. welded externally; pass to the condenser for a limited • Heat production system for the di- Adjustable direction blades at the inlet Cogeneration plants • Fully welded pressurized parts; period of time. MIRAFIORI NORD strict heating network (260 MWt) in of the compressor enable the extracted • Completely drainable heat exchange Supplementary and back-up plants the form of water superheated to air flow rate to be adapted to the power elements. District heated area 120°C, whose operation is based on of the machine so as to allow the ma- the extraction of steam at a low pres- BIT
MONCALIERI Operating range at an ambient T of 15°C 390 e 380 (MW ) 370
360
350
340 Electrical power 330
320
310
300
290
280
270
260
250
240
230
220
rd 210 3 GT of the 200 190 Cogeneration Plant 180 0 20 40 60 80 100 120 140 160 180 200 220 240 260 Thermal power (MW t)
TG 100% TG 75% TG 60%
The 3rd GT of the Moncalieri plant with The 3rd GT, designed to guarantee the The steam generator The steam turbine • Gas turbine with continuous nominal its capacity of 400 MWe was desig - maximum efficiency and minimum Operating conditions load, steam turbine out of order, ma- ned using the very latest technologies environmental impact currently avai- The heat recovery steam generator The condensation steam turbine is The plant will provide optimum perfor- ximum extraction of steam from by- for the simultaneous production of lable, is made up principally of: The gas turbine ximum exhaust gas temperature possi- has the following characteristics: made up of separate high, medium mance under the following main ope- pass system for district heating net- electricity and heat. The unit, with its • Gas turbine that generates more sure and temperature from the steam ble and thus optimum steam conditions • Three pressure levels; and low pressure turbine sections. The internal casing of the LP section is rating conditions: work; thermal capacity of 260 MWt, together than 260 MW of electricity under ISO turbine and/or by-pass system; Functional characteristics The turbine (fed with natural gas) is a also in the partial load range. • Degassing tower built into the cylin- The high pressure turbine section has connected to the casing of the MP sec- nd • Gas turbine with continuous nominal • Gas turbine continuous nominal load, with the upgraded 2 GT, constitutes conditions with an efficiency of over • Unit heater-based heat dissipation single-shaft machine with a 15-stage drical low-pressure body; a barrel-shaped body. The fixed sup- tion by connecting rods to reduce the load, steam turbine in electricity only steam turbine out of order without The functions of the thermoelectric po- the main source of heat for the Turin 39%; system with a capacity of about air compression section (final pressure • High efficiency thermal design with port is situated between the HP and necessary play (thermal expansion). mode without extraction of steam for extraction of steam from bypass sy- wer plant include: district heating system, one of the lar- • Heat recovery steam generator, with 340 MWt, at an ambient temperatu- 17 bars) combined with a 4-stage tur- small-diameter tubes and tabs den- MP turbine sections. The turbine blades provide three-di- the district heating network; stem for district heating network. • Production of electricity and heat for gest in Europe. three pressure levels, fed with hot re of 30°C, for cooling the superhea- bine section. sely arranged in a quincunx confor- The LP turbine section has a dual-flow mensional flow optimization. • Gas turbine with continuous nominal district heating; exhaust gas from the gas turbine ted district heating water, which may The turbine’s hollow shaft, of the type mation; design. The HP and MP valves are compact, nd rd load, steam turbine in cogeneration The plant will, in any case, operate un- • Operation under partial loads above The plant provides the district heating (660 kg/s at a temperature of almost be used by the 2 and 3 GTs, if the with blade holding rings, ensures short • Natural circulation, based on bro- combined valves (regulation and quick mode with maximum extraction of der all the intermediate conditions in- the minimum technical level to allow system with water at a temperature of 600°C), without a smoke bypass flue; water flow from the off-take canal is start-up times (34 minutes from rest to ad-diameter cylindrical bodies with stop valve form a unit). The steam 120 °C, dispatched by the pumping sy- • Condensation steam turbine with a insufficient; steam for district heating network; dicated in the graph above. use of these loads; full load) due to the low thermal inertia TORINO NORD high-efficiency separators and high flows towards the bottom of the con- • Operation of the unit from the central stem to the end user devices through capacity of about 138 MWe and re- and adapts rapidly to variations in the circulation stability in the evapora- denser situated below the turbine. rd control room without any need for the vast underground pipe network. gulated extraction of steam at a low In electricity mode, the 3 GT reaches demand for power with an upward po- tion circuits; Steam for the district heating system any local actions; pressure for the production of heat a total efficiency of over 57%. wer gradient of 13 MW/min. • “Hanging” support to allow free can be extracted from two steam • Protection of all mechanical compo- for the district heating network; In cogeneration mode, its overall effi- The blades of the turbine, subjected to downward expansion of the heat taps on the medium pressure turbi- nents against faults or failures (for • Tube nest condensation system, co- ciency is 87%. extreme stress, are air-cooled internal- exchange elements; ne section. example, in case of gas turbine or ste- oled by the water coming from the ly and protected externally by a cushion • Cold wall closure (insulated internal- off-take canal of the river Po (about am turbine cut-out); of cooling air blown in through laser- POLYTECHNIC ly) with structure and reinforcements • Operation in a single cycle with by- 7,000 kg/s); drilled holes. welded externally; pass to the condenser for a limited • Heat production system for the di- Adjustable direction blades at the inlet Cogeneration plants • Fully welded pressurized parts; period of time. MIRAFIORI NORD strict heating network (260 MWt) in of the compressor enable the extracted • Completely drainable heat exchange Supplementary and back-up plants the form of water superheated to air flow rate to be adapted to the power elements. District heated area 120°C, whose operation is based on of the machine so as to allow the ma- the extraction of steam at a low pres- BIT
MONCALIERI Operating range at an ambient T of 15°C 390 e 380 (MW ) 370
360
350
340 Electrical power 330
320
310
300
290
280
270
260
250
240
230
220
rd 210 3 GT of the 200 190 Cogeneration Plant 180 0 20 40 60 80 100 120 140 160 180 200 220 240 260 Thermal power (MW t)
TG 100% TG 75% TG 60%
The 3rd GT of the Moncalieri plant with The 3rd GT, designed to guarantee the The steam generator The steam turbine • Gas turbine with continuous nominal its capacity of 400 MWe was desig - maximum efficiency and minimum Operating conditions load, steam turbine out of order, ma- ned using the very latest technologies environmental impact currently avai- The heat recovery steam generator The condensation steam turbine is The plant will provide optimum perfor- ximum extraction of steam from by- for the simultaneous production of lable, is made up principally of: The gas turbine ximum exhaust gas temperature possi- has the following characteristics: made up of separate high, medium mance under the following main ope- pass system for district heating net- electricity and heat. The unit, with its • Gas turbine that generates more sure and temperature from the steam ble and thus optimum steam conditions • Three pressure levels; and low pressure turbine sections. The internal casing of the LP section is rating conditions: work; thermal capacity of 260 MWt, together than 260 MW of electricity under ISO turbine and/or by-pass system; Functional characteristics The turbine (fed with natural gas) is a also in the partial load range. • Degassing tower built into the cylin- The high pressure turbine section has connected to the casing of the MP sec- nd • Gas turbine with continuous nominal • Gas turbine continuous nominal load, with the upgraded 2 GT, constitutes conditions with an efficiency of over • Unit heater-based heat dissipation single-shaft machine with a 15-stage drical low-pressure body; a barrel-shaped body. The fixed sup- tion by connecting rods to reduce the load, steam turbine in electricity only steam turbine out of order without The functions of the thermoelectric po- the main source of heat for the Turin 39%; system with a capacity of about air compression section (final pressure • High efficiency thermal design with port is situated between the HP and necessary play (thermal expansion). mode without extraction of steam for extraction of steam from bypass sy- wer plant include: district heating system, one of the lar- • Heat recovery steam generator, with 340 MWt, at an ambient temperatu- 17 bars) combined with a 4-stage tur- small-diameter tubes and tabs den- MP turbine sections. The turbine blades provide three-di- the district heating network; stem for district heating network. • Production of electricity and heat for gest in Europe. three pressure levels, fed with hot re of 30°C, for cooling the superhea- bine section. sely arranged in a quincunx confor- The LP turbine section has a dual-flow mensional flow optimization. • Gas turbine with continuous nominal district heating; exhaust gas from the gas turbine ted district heating water, which may The turbine’s hollow shaft, of the type mation; design. The HP and MP valves are compact, nd rd load, steam turbine in cogeneration The plant will, in any case, operate un- • Operation under partial loads above The plant provides the district heating (660 kg/s at a temperature of almost be used by the 2 and 3 GTs, if the with blade holding rings, ensures short • Natural circulation, based on bro- combined valves (regulation and quick mode with maximum extraction of der all the intermediate conditions in- the minimum technical level to allow system with water at a temperature of 600°C), without a smoke bypass flue; water flow from the off-take canal is start-up times (34 minutes from rest to ad-diameter cylindrical bodies with stop valve form a unit). The steam 120 °C, dispatched by the pumping sy- • Condensation steam turbine with a insufficient; steam for district heating network; dicated in the graph above. use of these loads; full load) due to the low thermal inertia TORINO NORD high-efficiency separators and high flows towards the bottom of the con- • Operation of the unit from the central stem to the end user devices through capacity of about 138 MWe and re- and adapts rapidly to variations in the circulation stability in the evapora- denser situated below the turbine. rd control room without any need for the vast underground pipe network. gulated extraction of steam at a low In electricity mode, the 3 GT reaches demand for power with an upward po- tion circuits; Steam for the district heating system any local actions; pressure for the production of heat a total efficiency of over 57%. wer gradient of 13 MW/min. • “Hanging” support to allow free can be extracted from two steam • Protection of all mechanical compo- for the district heating network; In cogeneration mode, its overall effi- The blades of the turbine, subjected to downward expansion of the heat taps on the medium pressure turbi- nents against faults or failures (for • Tube nest condensation system, co- ciency is 87%. extreme stress, are air-cooled internal- exchange elements; ne section. example, in case of gas turbine or ste- oled by the water coming from the ly and protected externally by a cushion • Cold wall closure (insulated internal- off-take canal of the river Po (about am turbine cut-out); of cooling air blown in through laser- POLYTECHNIC ly) with structure and reinforcements • Operation in a single cycle with by- 7,000 kg/s); drilled holes. welded externally; pass to the condenser for a limited • Heat production system for the di- Adjustable direction blades at the inlet Cogeneration plants • Fully welded pressurized parts; period of time. MIRAFIORI NORD strict heating network (260 MWt) in of the compressor enable the extracted • Completely drainable heat exchange Supplementary and back-up plants the form of water superheated to air flow rate to be adapted to the power elements. District heated area 120°C, whose operation is based on of the machine so as to allow the ma- the extraction of steam at a low pres- BIT
MONCALIERI Operating range at an ambient T of 15°C 390 e 380 (MW ) 370
360
350
340 Electrical power 330
320
310
300
290
280
270
260
250
240
230
220
rd 210 3 GT of the 200 190 Cogeneration Plant 180 0 20 40 60 80 100 120 140 160 180 200 220 240 260 Thermal power (MW t)
TG 100% TG 75% TG 60%
The 3rd GT of the Moncalieri plant with The 3rd GT, designed to guarantee the The steam generator The steam turbine • Gas turbine with continuous nominal its capacity of 400 MWe was desig - maximum efficiency and minimum Operating conditions load, steam turbine out of order, ma- ned using the very latest technologies environmental impact currently avai- The heat recovery steam generator The condensation steam turbine is The plant will provide optimum perfor- ximum extraction of steam from by- for the simultaneous production of lable, is made up principally of: The gas turbine ximum exhaust gas temperature possi- has the following characteristics: made up of separate high, medium mance under the following main ope- pass system for district heating net- electricity and heat. The unit, with its • Gas turbine that generates more sure and temperature from the steam ble and thus optimum steam conditions • Three pressure levels; and low pressure turbine sections. The internal casing of the LP section is rating conditions: work; thermal capacity of 260 MWt, together than 260 MW of electricity under ISO turbine and/or by-pass system; Functional characteristics The turbine (fed with natural gas) is a also in the partial load range. • Degassing tower built into the cylin- The high pressure turbine section has connected to the casing of the MP sec- nd • Gas turbine with continuous nominal • Gas turbine continuous nominal load, with the upgraded 2 GT, constitutes conditions with an efficiency of over • Unit heater-based heat dissipation single-shaft machine with a 15-stage drical low-pressure body; a barrel-shaped body. The fixed sup- tion by connecting rods to reduce the load, steam turbine in electricity only steam turbine out of order without The functions of the thermoelectric po- the main source of heat for the Turin 39%; system with a capacity of about air compression section (final pressure • High efficiency thermal design with port is situated between the HP and necessary play (thermal expansion). mode without extraction of steam for extraction of steam from bypass sy- wer plant include: district heating system, one of the lar- • Heat recovery steam generator, with 340 MWt, at an ambient temperatu- 17 bars) combined with a 4-stage tur- small-diameter tubes and tabs den- MP turbine sections. The turbine blades provide three-di- the district heating network; stem for district heating network. • Production of electricity and heat for gest in Europe. three pressure levels, fed with hot re of 30°C, for cooling the superhea- bine section. sely arranged in a quincunx confor- The LP turbine section has a dual-flow mensional flow optimization. • Gas turbine with continuous nominal district heating; exhaust gas from the gas turbine ted district heating water, which may The turbine’s hollow shaft, of the type mation; design. The HP and MP valves are compact, nd rd load, steam turbine in cogeneration The plant will, in any case, operate un- • Operation under partial loads above The plant provides the district heating (660 kg/s at a temperature of almost be used by the 2 and 3 GTs, if the with blade holding rings, ensures short • Natural circulation, based on bro- combined valves (regulation and quick mode with maximum extraction of der all the intermediate conditions in- the minimum technical level to allow system with water at a temperature of 600°C), without a smoke bypass flue; water flow from the off-take canal is start-up times (34 minutes from rest to ad-diameter cylindrical bodies with stop valve form a unit). The steam 120 °C, dispatched by the pumping sy- • Condensation steam turbine with a insufficient; steam for district heating network; dicated in the graph above. use of these loads; full load) due to the low thermal inertia TORINO NORD high-efficiency separators and high flows towards the bottom of the con- • Operation of the unit from the central stem to the end user devices through capacity of about 138 MWe and re- and adapts rapidly to variations in the circulation stability in the evapora- denser situated below the turbine. rd control room without any need for the vast underground pipe network. gulated extraction of steam at a low In electricity mode, the 3 GT reaches demand for power with an upward po- tion circuits; Steam for the district heating system any local actions; pressure for the production of heat a total efficiency of over 57%. wer gradient of 13 MW/min. • “Hanging” support to allow free can be extracted from two steam • Protection of all mechanical compo- for the district heating network; In cogeneration mode, its overall effi- The blades of the turbine, subjected to downward expansion of the heat taps on the medium pressure turbi- nents against faults or failures (for • Tube nest condensation system, co- ciency is 87%. extreme stress, are air-cooled internal- exchange elements; ne section. example, in case of gas turbine or ste- oled by the water coming from the ly and protected externally by a cushion • Cold wall closure (insulated internal- off-take canal of the river Po (about am turbine cut-out); of cooling air blown in through laser- POLYTECHNIC ly) with structure and reinforcements • Operation in a single cycle with by- 7,000 kg/s); drilled holes. welded externally; pass to the condenser for a limited • Heat production system for the di- Adjustable direction blades at the inlet Cogeneration plants • Fully welded pressurized parts; period of time. MIRAFIORI NORD strict heating network (260 MWt) in of the compressor enable the extracted • Completely drainable heat exchange Supplementary and back-up plants the form of water superheated to air flow rate to be adapted to the power elements. District heated area 120°C, whose operation is based on of the machine so as to allow the ma- the extraction of steam at a low pres- BIT
MONCALIERI 3rd GT of the Cogeneration Plant 2013 october
Functional diagram
Steam generator with three pressure levels pressure (bar) capacity (Kg/s) temperature (°C) • AP 104 74 550 G • MP 28 87,4 560 3~ • BP 3,5 9,63 250 www.irenenergia.it MONCALIERI PLANT 3RD GT Gas turbine • Capacity 260 MW Steam turbine • Fuel natural gas • Capacity 138 MW
AP MP BP G 3~ Iren Energia is the company in the Iren Group whose core The plant is made up of two combined-cycle cogenera - businesses are the production and distribution of electri- tion units (2nd GT and 3 rd GT), with an overall electrical city, the production and distribution of thermal energy for capacity of 800 MW and thermal capacity of 520 MW in district heating and the provision of technological services. cogeneration mode, and a 141 MW supplementary and back-up plant. water-cooled condenser Iren Energia constantly pursues its objectives, which are qua- canal lity, reliability, sustainable development, energy efficiency The heat produced by the cogenerators provides district and a close relationship with the areas in which it operates. heating for a total volume of 55 million cubic metres, The 3rd GT is part of the Moncalieri cogeneration plant, which, making Turin the city with the largest district heating sy - Heat exchangers for district together with the Torino Nord plant, supplies Turin’s district stem in Italy. heating • Thermal power 260 MW heating system. • Inlet temperature 70°C • Outlet temperature 120°C district heating
TEST DATA Combined-cycle operation Combined-cycle and cogeneration operation ISO conditions on site ISO conditions on site
• Net electrical power 383 MW • Net electrical power 322 MW • Efficiency 57% • Thermal power 260 MW • Efficiency 87%
Iren Energia S.p.A. Corso Svizzera, 95 10143 Torino - Italy Tel. +39 011 5549 111 Fax +39 011 53 83 13