QUARZ Test and Qualification Center for Concentrating Solar Power Technologies. Prof. Dr. Pitz-Paal, Dr. Peter Heller

Transcription

1 Chart 1 > Lecture > Author Document > Date QUARZ Test and Qualification Center for Concentrating Solar Power Technologies Prof. Dr. Pitz-Paal, Dr. Peter Heller , Beijing

2 Chart 2 > Lecture > Author Document > Date Objective Fairly asses quality of components of CSP Systems Develop technological basis for standards QUARZ Test and Qualification Center built in 2009 at DLR Cologne

3 Component Evaluation Collector structure Receivers / Mounting points Rigidity Reflector panels Reflectivity slope deviation Intercept factor Tracking system Heat losses ( C) Optical effciency Flexible connectors Pressure loss Tracking accuracy Slide 3

4 Chart 4 > Lecture > Author Document > Date Mounting Points Method: Photogrammetrie

5 Chart 5 > Lecture > Author Document > Date Reflectivity Parameter ρ spec = specular reflectivity sun α = half angle of beam spread ρ direct = ρ spec + directed diffusion within α ρ SWD = ρ direct solar weighted ρ hem = spektral hemispherical reflectivity ρ SWH = ρ hem solar weighted

6 Chart 6 > Lecture > Author Document > Date Spektral hemispherical Reflectivity ρ hem Perkin Elmer Lambda 950 Integrating sphere Wavelenth range nm

7 Chart 7 > Lecture > Author Document > Date Measurement direct Reflectivity ρ direct Devices & Services R15 portable Reflectometer 25 mrad Aperture Sonne Absorber 10 mrad ~40 mrad Kollektor

8 Chart 8 > Lecture > Author Document > Date Solar weighted Reflectivity ASTM G direkte Solareinstrahlung AM 1.5 (Bsp. ρ SWH = 0,903) ISO 9050 globale Solareinstrahlung AM 1.5 (Bsp. ρ SWH = 0,900) ρ SWH = ρ direct λ I λ dd / I λ dd ( ρ direct (λ) / ρ hem (λ) ) const 0,009 Solare Normspektren AM 1.5 ρ SWD = ρ direct,660 ρ hem,660 ρ SWH relative Intensität 0,008 0,007 0,006 0,005 0,004 0,003 ASTM G ISO ,002 0, Wellenlänge [nm]

9 Chart 9 > Lecture > Author Document > Date Example Glass Aluminium Polymer ρ SWH G173 0,939 0,903 0,922 ρ SWD G173 0,939 0,830 0,874 Glanz 1 0,92 0,95 1,0 0,9 Hemisphärische Reflexion 0,01 0,009 ρ hem,λ 0,8 0,7 0,6 0,5 0,4 0,3 0,2 0,1 Glas Spiegel Glas Spiegel Glas Polymer Spiegel Folie Aluminium Solar Aluminium Norm G173 Solar Norm G173 Solar Norm G173 0,008 0,007 0,006 0,005 0,004 0,003 0,002 0,001 relative Solareinstrahlung 0, Wellenlänge [nm]

10 Chart 10 > Lecture > Author Document > Date Example Glass Aluminium Polymer )

11 Optical Performance Methods: Photogrammetry and Deflectometry Laboratory single mirror panels SDx, SDy, FDx, Intercept Field entire collector module SDx, FDx, Intercept 3D coordinates of mirror points HCE axis of rotation Slide 11

12 Chart 12 > Lecture > Author Document > Date QUARZ Mirror shape measurement Principle Method: Deflectometry

13 Chart 13 > Lecture > Author Document > Date Solar Simulator Receiver Test Rig (ElliRec) η opt,rec

14 Chart 14 > Lecture > Author Document > Date Solar Simulator Receiver Test Rig (ElliRec) HMI-Lamps T in, T out 1,2 kw 2,5 kw 4 kw P in η kon P in P th,loss V ~ η opt,rec

15 Chart 15 > Lecture > Author Document > Date QUARZ: Receiver heat loss testing Measurements: - Principle: Electrical Heating = Heat Loss Features: - Internal Electric Heating - End Heaters for Homogeneous Temperature Profile - Temperature Measurement of Absorber inside Glass Envelope End Caps Surface - Calculation of Axial End Losses (~3%) and Correction of Power

16 Chart 16 > Lecture > Author Document > Date Rotating Plattform KONTAS Spezifikationen Modules < 20 m HTF: Syltherm 800 Rotation : kg/s 400 C Fluid conditioning Eurotrough 12m 23 m

17 QFly: Flying Camera for optical assessment of parabolic troughs a) Test with QFLYin KONTAS facility (PSA) b) automatic flight routing c) photogrammetric measurement of camera and collektor position Uncertainty RMS of module:approx. 0,1 mrad [mrad] d) Slope deviaion of KONTAS collektor measured with QFly

18 Summary Measurement Instruments Hemispherical and specular reflectivity Thermal heat loss receiver test rig (ThermoRec) Electrical heating Heat loss measurement P th,loss (T abs -T amb ) Solar Simulator Receiver Test rig (ElliRec) Lamps independet of sunshine Reproducible test conditions Relative measurement of η opt,rec Rotating Plattform Kontas Measurement of collector Module Efficienciy collector module η K

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