New water-cooled, high power infrared emitter from Heraeus

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 1 August 2004




(2004), "New water-cooled, high power infrared emitter from Heraeus", Anti-Corrosion Methods and Materials, Vol. 51 No. 4.



Emerald Group Publishing Limited

Copyright © 2004, Emerald Group Publishing Limited

New water-cooled, high power infrared emitter from Heraeus

New water-cooled, high power infrared emitter from Heraeus

Keywords: Heraeus Noblelight, Emitters, Heat

A new water-cooled, short wave, infrared emitter, which offers very high power densities, is now available from Heraeus Noblelight. It is particularly suitable for finishing operations which require very rapid heating and for the heating of very thin coatings.

The new short wave emitter is based on the well-proven, Heraeus twin tube design and features new materials and innovative water cooling, which allow very high surface power densities of up to 1.2 MW/m2 to be achieved. (This compares with maximum surface power densities of a few hundred kW/m2 for conventional infrared emitters.) Because of the rapid heat-up rates, the water-cooled emitter can generate temperatures greater than 1,000°C in the product to be heated within seconds.

The emitter has been developed to find an application in areas such as drying thin, water- based dispersions in coil coating in the steel industry, heating glazings in the manufacture of roof tiles, rapid heating of metal plates to temperatures of around 900°C, applying heat and coatings under vacuum and drying varnishes on wooden boards.

Currently, the new emitters, which have an operating life of around 1,500 h, are available in four models, with heated lengths of 150, 310, 530 and 800 mm and power ratings from 2.9 to 15 kW. Other lengths and powers can be manufactured to order. Every emitter is fitted with gold reflectors to maximise the heat radiation and can be used with all conventional voltages. The required cooling is 2-3 l/min for emitters with heated lengths less than 500 mm and 4-6 l/min for emitters with heated lengths greater than 500 mm.

For further information, contact: Ian Bartley, Heraeus Noblelight Ltd, Unit 1, Millenium Court, Clayhill Industrial Estate, Buildwas Road, Neston, Cheshire, CH64 3UZ, UK. Tel: +44 151 353 2710.

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