The environmental engineering specialist Hellmich is focussing on heat exchangers (heat recovery).
One big cost factor in the production of ceramics are energy costs, and these are likely to rise further over the next few years. One way to lower these costs is to recover thermal energy from kiln exhaust gases. For this, Hellmich has developed a flue gas/air heat exchanger made of rectangular pipes instead of the usual round tube bundles. These heat exchangers can be cleaned by means of a simple, robust, low-maintenance system that ensures consistently good heat transfer. In addition, part of the recovered warm air is added to the cooling air, hence effectively preventing unwanted condensation.