The Hitec Economizer from GEA Heat Exchangers is designed for equipping or retrofitting gas turbines, boilers, as well as a wide range of industrial processes where heat recovery can be achieved. This efficient heat-recovery system allows relatively simple decoupling of high energy flow from exhaust gases. One very special feature of the Hitec Economizer is its corrosion- and temperature-resistant Polual HTCS (High Temperature Corrosion Shield) on the finned tubes of the heat exchangers. These finned tubes can be manufactured from inexpensive light metal (aluminium), but can be employed for temperatures up to 200 °C. Until now, finned tubes made of considerably more expensive stainless steel were commonly used for such temperatures. In addition, stainless steel has lower heat conductivity than does light metal, which reduces the operational efficiency.
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