Drying Systems use thermal oxidation to stop contamination.
October 27, 2009 -
RDS Drying Systems offer thermal oxidation process designed to eliminate challenge of residue contamination stemming from photovoltaic metallization in order to minimize maintenance and provide cleaner process chamber. Process involves heating gas to temperature greater than 500°C, while arrangement of heater and granulate pack lend to space and energy consumption reduction. In order to oxidize hydrocarbons, catalyzers are installed downstream from heating chamber.
Rehm Thermal Oxidation Process Safeguards PV Metallization Yields
A new thermal oxidation process from Rehm Thermal Systems has eliminated the challenge of residue contamination from photovoltaic metallization. In order to minimise maintenance and provide a cleaner process chamber, Rehm has innovatively implemented a proven method of thermal oxidation to enhance the performance of its RDS Drying Systems.
During the 200°C to 350°C curing process involved in metallization, significant quantities of vapour and smoke are produced which must be reliably exhausted from the process chamber in order to avoid contamination and yield loss. However, since there is a wide variation in paste compositions associated with solar metallization, it is not always possible to customise a suitably effective filter or condenser to manage the released vapour or smoke. As a thermal management specialist, Rehm has been engineering solutions to the challenge of residue contamination for many years. Now, as part of its advanced series of drying systems for PV metallization, the company has introduced the technology into the solar industry, along with its ability to substantially reduce the process' condensate-forming potential.
Thermal oxidation is a process during which the volatile organic constituents and the hydrocarbons (VOCs) in the metallization pastes react with oxygen, and are decomposed. The goal is to burn the long-chain molecules in the vapour or smoke and transform them into readily volatile, non condensable substances. These are then easily discharged from the system, to significantly reduce the potential of condensation and in turn, minimise system maintenance. Due to the arrangement of the heater and the granulate pack in Rehm's RDS Drying Systems results in a very compact, thermal reactor which requires little additional energy to reduce energy consumption even further.
Rehm's thermal oxidation process involves heating the gas to a temperature greater than 500°C. The molecules cracked at these high temperatures and combine with atmospheric oxygen which is present within the system. In order to oxidise hydrocarbons in an energy-efficient manner at low reaction temperatures of nearly 500°C, catalyzers are installed downstream from the heating chamber. This results in a thermal reactor which is dimensioned for solar dryers such that a gas exchanger of greater than 40-fold assures reliable removal of the vapour or smoke which occurs in the process chamber. Rehm recently detailed its pioneering approach to residue management in a new technical paper entitled 'Controlling Damaging Contamination in PV Metallization'.
About Rehm Thermal Systems
Rehm Thermal Systems (www.rehm-group.com) is an international supplier to the photovoltaic and electronics industries, specializing in curing, drying and firing technologies as well as convection and condensation soldering. Rehm operates vertically integrated manufacturing facilities in Germany, China, and Russia, and technical support facilities throughout Europe, Asia and North America.
Rehm Contact
Marc J. Dalderup
Rehm Thermal Systems GmbH
Leinenstrasse 7
89143
Blauberen, Germany
Tel: +49 7344-9606-0
E-mail : m.dalderup@rehm-group.com www.rehm-group.com
Public Relations:
Protean Marketing
Debbie Gomez
Unit 1, Cutbush Court; Danehill, Lower Earley
Reading RG6 4UW
INTL
Phone: 44-1189-759880 E-mail this person
General Information:
Marc J. Dalderup
INTL
Phone: 49-7344-9606-0 E-mail this person Company Information: Name: Rehm Thermal Systems Address: Leinenstrasse 7 City: Blauberen Country: Germany Phone: http://www.rehm-group.com
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