Schlaich Bergermann und Partner

ISES 2003

Göteborg, June 15-19, 2003

Thomas Keck and Wolfgang Schiel

EnviroDish and EuroDishSystem And Status

Schlaich Bergermann und Partner

The EuroDish Project

Main objectives:Preparation of market introductionErection of country reference systems

Partners:SBP: Project leader and system designSOLO: Stirling engineK+S: Control systemMERO: Concentrator, turntable, erectionDLR/PSA: testing and evaluation

Sponsor:EC under Joule III

Schlaich Bergermann und Partner

Dish Stirling Principle

Solar radiation

Stirling

Concentrator

Tracking

Receiver

Generator

Ray pattern

Receiver

Schlaich Bergermann und Partner

Dish Stirling Status: 10 kW dish Stirling System at PSA

Schlaich Bergermann und Partner

EuroDish Design

1 Concentrator shell2 Stirling support

structure3 Stirling unit4 Elevation drive rail5 Azimuth drive rail6 Foundation7 Azimuth motor8 Switch case9 Turntable

10 Ring truss11 Elevation bearing

Schlaich Bergermann und Partner

FEM Analysis of new Segmented (12) Concentrator Design

Schlaich Bergermann und Partner

EuroDish Facet fabrication:12 segments of glass fibre reinforced resign

Master Pattern Heating elements

Stiffening ribs on mould rear side Attaching glass mirrors

Schlaich Bergermann und Partner

EuroDish Concentrator Erection

Mounting of segments

to ring truss

Schlaich Bergermann und Partner

EuroDish Motion Controller

Schlaich Bergermann und Partner

SOLO Stirling 161

Schlaich Bergermann und Partner

Two Euro Dish units in Operation at PSA/Spain

Schlaich Bergermann und Partner

EuroDish Test Results

-150 -100 -50 0 50 100 150

-150

-100

-50

0

50

100

150

Incident Flux [kW/m2]

X Axis [mm]

Y A

xis

[mm

]

1.2E4 -- 1.3E4

1.1E4 -- 1.2E4

1E4 -- 1.1E4

9000 -- 1E4

8000 -- 9000

7000 -- 8000

6000 -- 7000

5000 -- 6000

4000 -- 5000

3000 -- 4000

2000 -- 3000

1000 -- 2000

0 -- 1000

-150 -100 -50 0 50 100 150

-150

-100

-50

0

50

100

150

Incident Flux [kW/m2]

X Axis [mm]

Y A

xis

[mm

]

1600 -- 1700

1500 -- 1600

1400 -- 1500

1300 -- 1400

1200 -- 1300

1100 -- 1200

1000 -- 1100

900.0 -- 1000

800.0 -- 900.0

700.0 -- 800.0

600.0 -- 700.0

500.0 -- 600.0

400.0 -- 500.0

300.0 -- 400.0

200.0 -- 300.0

100.0 -- 200.0

0 -- 100.0

Schlaich Bergermann und Partner

EuroDish Test Results

0

1

2

3

4

5

6

7

8

9

10

0 200 400 600 800 1000

Solar Insolation DNI (W/m²)

Net

Pow

er (k

W)

Schlaich Bergermann und Partner

EuroDish Test Results

44,8 kW42,1 kW

39,6 kW

33,6 kW

10,8 kW 9,8 kW 9,5 kW

0,0

5,0

10,0

15,0

20,0

25,0

30,0

35,0

40,0

45,0

50,0

Solar 1

00%

Reflec

tivity

Interc

ept

Receiv

er

Stirling

Genera

torPara

sitics

Pow

er in

KW

100%

94%

88%

75%

24%

22%

21%

Schlaich Bergermann und Partner

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

Pow

er [k

W] a

nd y

early

ene

rgy

prod

uctio

n [M

Wh/

unit]

0.0%

5.0%

10.0%

15.0%

20.0%

25.0%

30.0%

35.0%Yearly energy production at 2800 W/m²/a

Max. powerAverage system efficiency

Peak system efficiency

25.3 MWh/a 25.3 MWh/a26.5 MWh/a

28.2 MWh/a29.6 MWh/a

31.1 MWh/a

10 kW 10 kW 10 kW 10.4 kW 10.8 kW 11 kW

19.9%

15.9%

25.2%

19.6%

DISTAL 2 EuroDish 100 /year 1‘000 /year 3‘000 /year 10‘000 /year

Technology Expectations / Learning Curve

Schlaich Bergermann und Partner

Schlaich Bergermann und Partner, Stuttgart

Levelized Electricity Cost:Dish-Stirling vs. Diesel generators

Dish - Stirling (medium

production rate)

Diesel generator sets @ selected fuel costs

Dish - Stirling(high

production rate)

Dish - Stirling (low

production rate)

Leve

lised

Ele

ctric

ity C

ost i

n €/

kWh

fuel costof 0.25 €/litre

LEV of Dish-Stirling with increasing production rate FuelMaintenance Replacement/OverhaulInitial Equipment

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

fuel costof 0.5 €/litre

fuel cost of 0.75 €/litreYearly solar insolation of 2000 kWh/m²/a DNI

Yearly solar insolation of 2800 kWh/m²/a DNI

Schlaich Bergermann und Partner

Outlook: BMU Project

Objectives: Further cost reduction and preparatory steps for market introduction.

Project Partner:SBP: System development SOLO: StirlingK+S: Remote controlMERO: Fabrication and erectionDLR: Testing and operation

Schlaich Bergermann und Partner

BMU Project: Working packages

WP 1: Preparing series production

WP 2: Operation of the two units in Spain

WP 3: Erection of Country Reference

Systems