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A thermal oxidation process from Rehm Thermal Systems has eliminated residue contamination from photovoltaic metallisation.

In order to minimise maintenance and provide a cleaner process chamber, Rehm has implemented a method of thermal oxidation to enhance the performance of its RDS Drying Systems.

As part of its advanced series of drying systems for PV metallisation, the company has introduced the technology into the solar industry, along with its ability to reduce the condensate-forming potential.

The arrangement of the heater and the granulate pack in Rehm’s RDS Drying Systems results in a compact thermal reactor that requires little additional energy to further reduce energy consumption.

Rehm’s thermal oxidation process involves heating the gas to a temperature greater than 500C.

In order to oxidise hydrocarbons in an energy-efficient manner at low reaction temperatures of nearly 500C, catalysers are installed downstream from the heating chamber.

This results in a thermal reactor that is dimensioned for solar dryers, so that a gas exchanger of greater than 40-fold assures reliable removal of the vapour or smoke that occurs in the process chamber.

Rehm has detailed its approach to residue management in a technical paper entitled ‘Controlling Damaging Contamination in PV Metallization’.

Rehm Thermal Systems

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