Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.
2020Physical models of the bidirectional reflectance of solar receiver coatings
Bitterling, M.; Bern, G.; Wilson, H.R.; Heimsath, A.; Nitz, P.
Journal Article
2019The effect of soiling on the reflectance of solar reflector materials - Model for prediction of incidence angle dependent reflectance and attenuation due to dust deposition
Heimsath, A.; Nitz, P.
Journal Article
2019Experimental Assessment of Simultaneous In-Situ Heliostats Calibration Methodology HelioControl at Themis Facility
Bern, G.; Bitterling, M.; Schöttl, P.; Ferriere, A.; Volut, Y.; Heimsath, A.; Nitz, P.
Conference Paper
2019Linear Fresnel Collector Mirrors - Measured Systematic Surface Errors and their Impact on the Focal Line
Heimsath, A.; Schöttl, P.; Bern, G.; Nitz, P.
Conference Paper
2019Measuring and Modelling the BRDF of Solar Receiver Paints
Bitterling, M.; Bern, G.; Schöttl, P.; Gledhill, S.; Wilson, H.R.; Heimsath, A.; Nitz, P.
Conference Paper
2019Monitoring of Soiling with the AVUS Instrument - Technical and Economic Assessment
Heimsath, A.; Schmidt, T.; Rohani, S.; Haack, L.; Meyer, R.; Steinmetz, J.; Nitz, P.
Conference Paper
2019Optimized Mirror Cleaning Strategies in PTC Plants Reducing the Water Consumption and the Levelized Cost of cleaning
Rohani, S.; Abdelnabi, N.; Fluri, T.; Heimsath, A.; Wittwer, C.; Pérez Ainsua, J.C.
Conference Paper
2019Parallel in-situ Measurement of Heliostat Aim Points in Central Receiver Systems by Image Processing Methods
Bern, G.; Schöttl, P.; Rooyen, D.W. van; Heimsath, A.; Nitz, P.
Journal Article
2019Performance Assessment of a Secondary Concentrator for Solar Tower External Receivers
Schöttl, P.; Zoschke, T.; Frantz, C.; Gilon, Y.; Heimsath, A.; Fluri, T.
Conference Paper
2019Scattering and Specular Reflection of Solar Reflector Materials - Measurements and Method for Determine Solar Weighted Specular Reflectance
Heimsath, A.; Nitz, P.
Journal Article
2018Automated monitoring of soiling with AVUS instrument for improved solar site assessment
Heimsath, A.; Schmidt, T.; Steinmetz, J.; Reetz, C.; Schwandt, M.; Meyer, R.; Nitz, P.
Conference Paper
2018Confidence interval computation method for dynamic performance evaluations of solar thermal collectors
Zirkel-Hofer, A.; Perry, S.; Kramer, K.; Heimsath, A.; Scholl, S.; Platzer, W.
Journal Article
2018Dynamic Performance Evaluation of Line-Concentrating Steam Collectors
Zirkel-Hofer, A.; Kramer, K.; Heimsath, A.; Scholl, S.; Platzer, W.
Conference Paper
2018Enhanced dynamic performance evaluation method of line-concentrating solar collectors
Zirkel-Hofer, A.; Kramer, K.; Heimsath, A.; Scholl, S.; Platzer, W.
Conference Paper
2018FREDA - An automated field reflectance and degradation assessment system for central receiver systems
Bern, G.; Schmidt, T.; Celentano, N.; Heimsath, A.; Nitz, P.
Conference Paper
2018Kalibrierungsverfahren und Kalibrierungsvorrichtung für eine Gruppe von Reflektoren zur Konzentration von Sonnenstrahlung auf einen Strahlungsempfänger
Bern, Gregor; Heimsath, Anna; Nitz, Peter; Rooyen, De Wet van; Schöttl, Peter
Patent
2017Innovative Solutions for Solar Tower Systems - Outcome of the HelioPack Project
Schöttl, P.; Rooyen, D.W. van; Bern, G.; Nitz, P.; Heimsath, A.
Presentation
2017Novel imaging closed loop control strategy for heliostats
Bern, G.; Schöttl, P.; Heimsath, A.; Nitz, P.
Conference Paper
2017Solar tower cavity receiver aperture optimization based on transient optical and thermo-hydraulic modeling
Schöttl, P.; Bern, G.; Rooyen, D.W. van; Heimsath, A.; Fluri, T.; Nitz, P.
Conference Paper
2016Improved in situ performance testing of line-concentrating solar collectors: Comprehensive uncertainty analysis for the selection of measurement instrumentation
Zirkel-Hofer, A.; Perry, S.; Fahr, S.; Kramer, K.; Heimsath, A.; Scholl, S.; Platzer, W.
Journal Article
2016Optical advantages of astigmatic aberration corrected heliostats
Rooyen, W. van de; Schöttl, P.; Bern, G.; Heimsath, A.; Nitz, P.
Conference Paper
2016Potential gain through implementation of astigmatic corrected heliostats
Rooyen, W. van de; Schöttl, P.; Bern, G.; Heimsath, A.; Nitz, P.; Dinter, F.; Harms, T.M.
Conference Paper
2016Ray-tracing software comparison for linear focusing solar collectors
Osório, T.; Horta, P.; Larcher, M.; Pujol-Nadal, R.; Hertel, J.; Rooyen, W. van de; Heimsath, A.; Schneider, S.; Benitez, D.; Frein, A.; Denarie, A.
Conference Paper
2016Representation of optical power variation from parabolic trough, linear fresnel and Scheffler-reflector concentrating collectors for solar process heat systems
Rooyen, D.W. van; Heimsath, A.
Conference Paper
2016Simplified analysis of solar-weighted specular reflectance for mirrors with high specularity
Fernandez-Garcia, A.; Sutter, F.; Heimsath, A.; Montecchi, M.; Sallaberry, F.; Peña-Lapuente, A.; Delord, C.; Martínez-Arcos, L.; Reche-Navarro, T.J.; Schmid, T.; Heras, C.
Conference Paper
2016Specular reflectance of soiled glass mirrors - study on the impact of incidence angles
Heimsath, A.; Lindner, P.; Klimm, E.; Schmid, T.; Nitz P.; Ordóñez Moreno, K.; Elon, Y.; Am-Shallem, M.; Nitz, P.
Conference Paper
2016State of the art of performance evaluation methods for concentrating solar collectors
Hofer, A.; Valenzuela, L.; Janotte, N.; Burgaleta, J.I.; Arraiza, J.; Montecchi, M.; Sallaberry, F.; Osório, T.; Carvalho, M.J.; Alberti, F.; Kramer, K.; Heimsath, A.; Platzer, W.; Scholl, S.
Conference Paper
2015Angle resolved specular reflectance measured with VLABS
Heimsath, A.; Schmid, T.; Nitz, P.
Journal Article, Conference Paper
2015Comparison of two different (quasi-) dynamic testing methods for the performance evaluation of a linear fresnel process heat collector
Hofer, A.; Büchner, D.; Kramer, K.; Fahr, S.; Heimsath, A.; Platzer, W.J.; Scholl, S.
Journal Article, Conference Paper
2015Extended heat loss and temperature analysis of three linear Fresnel receiver designs
Hofer, A.; Cuevas, F.; Heimsath, A.; Nitz, P.; Platzer, W.J.; Scholl, S.
Journal Article, Conference Paper
2015Hemispherical reflectance results of the SolarPACES reflectance round robin
Montecchi, M.; Delord, C.; Raccurt, O.; Disdier, A.; Sallaberry, F.; Jalon, A.G. de; Fernandez-Garcia, A.; Meyen, S.; Happich, C.; Heimsath, A.; Platzer, W.
Journal Article, Conference Paper
2015Large scale solar plants integration in electro-winning copper recuperation process
Cuevas, F.; Murray, C.; Platzer, W.; Heimsath, A.
Journal Article, Conference Paper
2015Specularity of concentrator mirrors for CPV measured with VLABS
Schmid, T.; Heimsath, A.; Hornung, T.; Nitz, P.
Conference Paper
2015Technical analysis and optimization of a high concentrating photovoltaic power tower
Ordóñez Moreno, K.; Heimsath, A.; Wiesenfarth, M.; Schöttl, P.; Nitz, P.
Conference Paper
2014Characterization of optics for concentrating photovoltaic and solar thermal applications
Hornung, T.; Kiefel, P.; Heimsath, A.; Schmid, T.; Schmidt, T.; Nitz, P.
Conference Paper
2014Measurement of small angle ray deviations for concentrating solar applications: Circumsolar radiation and mirror beam spread
Nitz, P.; Schmid, T.; Schmidt, T.; Hornung, T.; Heimsath, A.
Conference Paper
2014Quantifying optical loss factors of small linear concentrating collectors for process heat application
Heimsath, A.; Bern, G.; Rooyen, D.W. van; Nitz, P.
Conference Paper, Journal Article
2013Linear Fresnel Collector receiver: Heat loss and temperatures
Heimsath, A.; Cuevas, F.; Hofer, A.; Nitz, P.; Platzer, W.J.
Journal Article, Conference Paper
2013Qualifying parabolic mirrors with deflectometry
Burke, J.; Li, W.; Heimsath, A.; Kopylow, C. von; Bergmann, R.B.
Journal Article
2012Outdoor test setup for concentrating photovoltaic and thermal (CPVT) systems
Helmers, H.; Boos, A.; Jetter, F.; Heimsath, A.; Wiesenfarth, M.; Bett, A.W.
Conference Paper
2011An optical model of the fix-focus scheffler reflector
Rooyen, W. van de; Heimsath, A.; Nitz, P.; Platzer, W.
Conference Paper
2010Assessment of Optical Errors of Concentrator Optics for the Optimisation of Design and Production
Nitz, P.; Hornung, T.; Kutscheid, G.; Heimsath, A.
Presentation