CMI Solar, Your Partner in Concentrated Solar Power
ENERGY
CMI Solar
CMI Solar, Your Partner in Concentrated Solar Power
CMI Solar is a Business Unit of CMI Energy, specialising in steam generation for nearly two centuries, when its founder, John Cockerill created the first industrial steam boiler in 1818. Since then CMI Energy has specialised in Heat Recovery Steam Generators installed all over the world. As a boiler specialist, CMI Energy has developed new products, steam generators and heat exchangers for solar thermal power plants.
The PS50 Tower Receiver, CMI’s first development in CSP Superheated Steam
The receiver, installed at the top of a tall tower, is the heart of the plant. It collects the energy from the sun reflected by numerous individually controlled mirrors (or heliostats) located on the ground.
Steam Drum
Generator
Turbine
Saturated Steam
Superheater
Superheater
Condensor Steam Storage System
First, the water circulates in evaporators, where it is transformed into steam. The saturated steam coming from the drums is then superheated in a superheater to be directly sent to a highefficiency classic turbine, driving an alternator. High pressure saturated steam can also be stored in accumulators, huge storage tanks situated on the ground. The saturated steam can be withdrawn on demand to be conditioned in an independent superheater and feed the turbine, allowing overnight power generation.
Heliostats
Cockerill Maintenance & Ingénierie
CMI’s Tower Receiver for 50 MWe CSP Plants Having developed near Seville (Spain) two pilot Central Tower CSP plants (PS10 and PS20) of respectively 10 and 20 MWe, operating with saturated steam, Abengoa Solar has entrusted CMI with the development of a 50 MWe superheated steam tower receiver.
CMI’s Design includes:
Thermal design
Mechanical design
In the frame of this development, a new design of solar superheater was patented in 2009. A CMI solar receiver of this type is being manufactured for the Khi Solar One CSP plant in South Africa.
From saturated steam to superheated steam
©CMI Energy EN v9756 11/2012 • Design: Visible.be • Pictures: Shutterstock
High Pressure (120 bar) and high temperature (530°C) superheated steam allows the use of standard high-efficiency steam turbines.
Piping stress analysis
Fatigue, creep resistance
Dynamic behavior
Overnight electricity production is made possible through the storage of high pressure saturated steam in accumulators.
Further efficiency enhancement is possible if an additional reheater is installed.
www.cmigroupe.com
Ongoing Developments
Water tower receivers for higher powers
Molten salt tower receivers, molten salt circulation and storage systems
Cycling tolerant steam generating heat exchangers (classic and Once Through designs)
Convective heat losses evaluation
Advantages
Radiation heat losses evaluation
Overall arrangement, detail drawings
P & I diagram
Operation specifications
CMI Solar 4100 Seraing – Belgium Tél : +32 4 330 25 05 Fax : +32 4 330 22 47 [email protected]
Cockerill Maintenance & Ingénierie
CMI Solar
CMI Solar, Your Partner in Concentrated Solar Power
CMI Solar is a Business Unit of CMI Energy, specialising in steam generation for nearly two centuries, when its founder, John Cockerill created the first industrial steam boiler in 1818. Since then CMI Energy has specialised in Heat Recovery Steam Generators installed all over the world. As a boiler specialist, CMI Energy has developed new products, steam generators and heat exchangers for solar thermal power plants.
The PS50 Tower Receiver, CMI’s first development in CSP Superheated Steam
The receiver, installed at the top of a tall tower, is the heart of the plant. It collects the energy from the sun reflected by numerous individually controlled mirrors (or heliostats) located on the ground.
Steam Drum
Generator
Turbine
Saturated Steam
Superheater
Superheater
Condensor Steam Storage System
First, the water circulates in evaporators, where it is transformed into steam. The saturated steam coming from the drums is then superheated in a superheater to be directly sent to a highefficiency classic turbine, driving an alternator. High pressure saturated steam can also be stored in accumulators, huge storage tanks situated on the ground. The saturated steam can be withdrawn on demand to be conditioned in an independent superheater and feed the turbine, allowing overnight power generation.
Heliostats
Cockerill Maintenance & Ingénierie
CMI’s Tower Receiver for 50 MWe CSP Plants Having developed near Seville (Spain) two pilot Central Tower CSP plants (PS10 and PS20) of respectively 10 and 20 MWe, operating with saturated steam, Abengoa Solar has entrusted CMI with the development of a 50 MWe superheated steam tower receiver.
CMI’s Design includes:
Thermal design
Mechanical design
In the frame of this development, a new design of solar superheater was patented in 2009. A CMI solar receiver of this type is being manufactured for the Khi Solar One CSP plant in South Africa.
From saturated steam to superheated steam
©CMI Energy EN v9756 11/2012 • Design: Visible.be • Pictures: Shutterstock
High Pressure (120 bar) and high temperature (530°C) superheated steam allows the use of standard high-efficiency steam turbines.
Piping stress analysis
Fatigue, creep resistance
Dynamic behavior
Overnight electricity production is made possible through the storage of high pressure saturated steam in accumulators.
Further efficiency enhancement is possible if an additional reheater is installed.
www.cmigroupe.com
Ongoing Developments
Water tower receivers for higher powers
Molten salt tower receivers, molten salt circulation and storage systems
Cycling tolerant steam generating heat exchangers (classic and Once Through designs)
Convective heat losses evaluation
Advantages
Radiation heat losses evaluation
Overall arrangement, detail drawings
P & I diagram
Operation specifications
CMI Solar 4100 Seraing – Belgium Tél : +32 4 330 25 05 Fax : +32 4 330 22 47 [email protected]
Cockerill Maintenance & Ingénierie
