International Energy Agency/Small Solar Power Systems Project: The IEA, SSPS High Flux Experiment de Wolfgang Schiel

International Energy Agency/Small Solar Power Systems Project: The IEA, SSPS High Flux Experiment: Testing the Advanced Sodium Receiver at Heat Fluxes up to 2.5 MW/m2

Wolfgang Schiel

Michael A. Geyer

Ricardo Carmona

Results and conclusions of the IEA-SSPS High Experiment are presented together with the thermodynamic theory of the Advanced Sodium Receiver. During the experiment, flux distributions, surface temperature distributions, efficiencies and losses, were measured and calculated in a power range of 0.8-3.5 MW at different sodium inlet/outlet temperatures. The design heat flux of 1.4 MW/m2 was increased to 2.5 MW/m2 resulting in a slightly increased total receiver efficiency of over 90%.

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Cuprins

1. High Flux Experiment Test Program.- 1.1 The Advanced Sodium Receiver at SSPS-CRS.- 1.2 Heliostat fields available at IEA-SSPS.- 1.3 Achievable High Flux Operating Conditions.- 1.4 The Test matrix for the High Flux Experiment.- 1.5 The High Flux Experiment Test Program.- 1.6 Participants and Work Packages.- 1.7 References.- 2. Asr Thermal and Stress Analysis for 2.5 Mw/M2 Peak Flux.- 2.1 Introduction.- 2.2 Thermal Analysis.- 2.3 Evaluation of ASR residual lifetime before High Flux Testing.- 2.4 Stress Analysis.- 2.5 Conclusions.- 2.6 References.- 3. Metallographic Analysis of the Asr Receiver Tubes.- 3.1 Introduction.- 3.2 Results of investigation.- 3.3 Assessment of the investigation findings.- 4. Asr Tube Deformation Measurements.- 4.1 Introduction.- 4.2 Method of Measurement.- 4.3 Results.- 4.4 Conclusions.- 5. Asr Absorptance Measurements.- 5.1 Introduction.- 5.2 Instrument characteristics.- 5.3 Methods for estimating absorptance distribution.- 5.4 Results.- 5.5 Conclusion.- 6. Heliostat Selection for Certain Peak/Power Levels.- 6.1 Introduction.- 6.2 Input Data.- 6.3 Output Data.- 6.4 Results.- 6.5 References.- 7. Determination of Feasible Peak and Power Levels.- 7.1 Introduction.- 7.2 Prediction of Irradiance.- 7.3 Determination of the feasible peak/power levels.- 7.4 Conclusions.- 7.5 References.- 8. Evaluation and Qualification of the HFD Bar.- 8.1 Introduction.- 8.2 Description of the HFD Measurement System.- 8.3 Repeatability of the HFD Bar Measurements.- 8.4 Comparison of HFD bar measurements and HELIOS calculations.- 8.5 Conversion to the ASR Plane.- 8.6 Conclusions.- 8.7 References.- 9. Receiver Thermodynamics Under High Flux Conditions.- 9.1 Introduction.- 9.2 Numerical simulation.- 9.3 Comparison Calculation-Measurement.- 9.4 High Flux Experiment.- 9.5Conclusions.- 9.6 References.- 10. ASR Simulation with the ‘Theresa’ Code.- 10.1 Introduction.- 10.2 Modifications of THERESA.- 10.3 Results.- 10.4 Conclusions.- 11. ASR Surface Temperature Measurements.- 11.1 Introduction.- 11.2 Measurement method and hardware.- 11.3 Presentation and Discussion of the Results.- 11.4 Conclusions.- 11.5 References:.- 12. Advanced Sodium Receiver Losses.- 12.1 Introduction.- 12.2 Optical losses.- 12.3 Thermal Losses.- 12.4 Procedure for calculating the losses during normal operation.- 12.5 References.- 13. ASR Loss Tests by Complementary Heliostat Field Configurations.- 13.1 Evaluation Method.- 13.2 External Receiver Thermal Loss.- 13.3 Part-Load Performance.- 13.4 Thermal Loss Predictions (Receiver Math Model).- 13.5 Conclusions.- 13.6 References.- 14. Receiver Efficiency Evaluation Based on Recorded Das Data and Helios Calculations.- 14.1 Introduction.- 14.2 Methods.- 14.3 Results.- 14.4 Power Distribution.- 14.5 Conclusions.- 14.6 References.- 15. ASR High Flux Experiment Results and Conclusions.- 15.1 Introduction.- 15.2 Major achievements.- 15.3 Results.- 15.4 Conclusions.- 15.5 References.- Appendix A. Tables of Infrared Measurements.- Appendix B. List of Illustrations.- Appendix C. List of Tables.