The Solar Tower Project in JülichA Milestone to Commercialisation of

Solar Thermal Power Generation

Solar-Institut JülichFH Aachen

Prof. Dr.-Ing. Bernhard Hoffschmidt

Solar Solar ConceptConcept

Power plant Power plant cyclecycle

~

Heliostat field

Receiver

turbine withgenerator

boiler

thermalstorage

compressor compressor

steam(480°C; 26 bar)

ambient air

Concentrator system hot gas cycle Water-Steam-Cycle

condenser

Hot air (680°C; 1 bar)

recirculation air (120°C; 1 bar)

concentratedsolar radiation

Solar Power Block Conventional power cycle

Hybridization

700°C hot air

ConventionalPower Block

Solar Power Block

Hybridization

ConventionalPower Block

700°C hot air~

Solar Power Block

Pilot plant Pilot plant -- MovieMovie

Feasibility Study

Feasibility Study

Tower

Feasibility Study

Tower

Feasibility Study

Tower

Feasibility Study

Tower

Feasibility Study

Function: Condenser

Condensation of wet steam

Water-Air Cooler

Usable for quick start up and shut done

Feasibility Study

Function: Turbine

Production of electrical power

Usable for quick start up and shut done

Max. electrical power 1500 kW

Feasibility Study

Function: Water Treatment

Water treatment of condensate for re-feeding into the boiler

Usable for quick start up and shut done

Feasibility Study

Function: Powerhouse

Junction of all data lines

Processing

Documentation

Feasibility Study

Function: Control Center

Control of plant

Visualization of operational and sensor data

Feasibility Study

Function: Storage

Compensation of fluctuating radiation

Keeping operation temperature during non operation

Capacity 1 hour of nominal operation

Feasibility Study

Function: Receiver and Steam Generator

Receiver (conversion of radiation energy in to hot air of 700°C)

Energy ducting from receiver to the steam generator and storage

Controlled vans, hot air distribution to steam generator and storage

Erection

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Function: Location

Adaptation to local topography

Selection of heliostats (mirrors) position

Fixing of tower dimension

Performance

Performance of Plant in Jülich

Maximal Electrical Power: 1,5 MW

Solar Radiation / DNI 800 kWh/m2a

Solar Multiple 1,2

Full Load hours 1000 h

Energy Production 1000 MWh/a

Ground Demand 18 ha (Algeria 6-8 ha)

Machbarkeitsstudie: Gesamtanlage

Storage Design

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0:00 2:24 4:48 7:12 9:36 12:00 14:24 16:48 19:12 21:36 0:00

Uhrzeit

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20.02.01

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Uhrzeit

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10.05.01

Typ 0Typ 0

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Direktstrahlung

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Uhrzeit

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Typ 0

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Uhrzeit

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Typ 20

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Typ 1

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Typ 30%

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no operation

52 Tage

Operation withstorage

operation withoutstorage

113 Tage

137 Tage

63 Tage

Storage Design

Storage Design

Relative frequency of radiation gaps

Einstrahlung = 0W/m² (ohne Nächte und trübe Tage)

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über360

Dauer [min]

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Future Future researchresearch aspectsaspects

Integration of aresearch plattform

Material tests under concentratedradiation (<2 MW/m2)Absorber designSensor system and controlstrategiesDevelopment of the systemcomponentsDirect Hydrogen production/synthetic fuels