Test System for dusting solar cell modules

The test system serves laboratory testing according to VDI 3956 (Test method for the dust soiling behaviour of solar energy systems).

This includes tests on the behaviour of glass surfaces under the influence of dusting, changing air humidity and glass temperature and the resulting condensation effects as well as cleaning by wind.

Experiments on other test specimens exposed to these environmental conditions are also possible.

Applications

tests according to VDI 3956

temperature-dependent dusting and cleaning tests of other types of samples

Standard

VDI 3956-1

Benefits

adjustable angle of the sample holder

selectable dust dosing positions

data logger

largely automated processes

optimised handling

Principle

The test specimen is mounted on a sample holder in an air lock and then drawn into the preconditioned main chamber. The air lock prevents the dust-containing atmosphere from entering the environment. The desired angle of the specimen is set (up to 60° to the horizontal). The environmental scenarios to be investigated are imitated using the following equipment:

- dusting using generator with dual-positionable nozzle

- temperature control of sample holder: with heating mat/cooling unit

- blowing off the sample using a movable air blade

When air is introduced into the chamber by dust dosing, humidification or sample cleaning, a negative pressure must be present in the chamber to prevent the emission of dust into the atmosphere.

Technical data