Solid-solid recuperation for increasing the energy efficiency of tunnel kilns

Research project conducted by the Research Alliance of the Clay Brick and Tile Industry Regd. (FGZ)
Project number
AiF 15325 BG
Project funded by
BMWi through the German Federation of Industrial Research Associations “Otto von Guericke” Regd. (AiF)
Implemented by
Brick Research Institute Essen Regd. (IZF)
Project manager
Dipl.-Ing. Eckhard Rimpel

1 Background

As an energy-intensive branch of industry, the clay brick and tile industry is constantly endeavouring to lower the energy consumption of existing equipment and searching for alternative firing concepts for the long term. A first and important step towards this is always the necessary calculations and preliminary testing.


2 Explanation of the problem

Tunnel kilns consist of series-connected countercurrent heat exchangers and, on account of the heat recovery achieved with this arrangement, they generally only require a low energy input. One disadvantage, however, is that only one of...

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