The identification and prediction of soiling rates is an important factor in site assessment and operation of solar CSP plants. The energy harvesting in CSP plants is severely influenced by the soiling of reflectors and mirrors.
The AVUS Sensor is made for the mid- and long term monitoring of soiling rates and offers a precise, repeatable and fully automated measuring method.
Furthermore it allows the analysis of the soiling composition and its adhesion to solar reflectors. Tackling both aspects, an instrument for automated online monitoring of soiling is developed by PSE AG, Fraunhofer ISE and TSK Flagsol Engineering GmbH in a research project funded by the German Federal Ministry of Economic Affairs and Energy BMWi.
|LED illumination with red light||λ=660 nm|
|Nominal acceptance half angle||φ = 51 mrad|
|Reflectance and cleanliness data for acceptance half angles||51 mrad, 7.5 mrad, 12.5 mrad and 23mrad|
|Tilt angle variation of exposed mirror samples||30°, 45°, 60°, 75°|
|Accuracy of cleanliness and reflectance||Resolution of 0.001 and repeatability of +/-0.005|
|Power supply||12 VDC for autonomous operation with PV modules|
|Graphical user interface||Web-interface operational on any mobile device or computer|
|Operation temperature range||-20°C to + 60°C|
In the project PSE AG has developed a web interfaces with the following features:
- Configuration of sampling intervals
- Display of current operating status of the sensor
- Automated plausibility check of measurements
- Temperature correction of measurement results through reference measurements
- Operator and Administrator mode
- Remote access
For further details please contact our project leader Jan Steinmetz.
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