Compared to cross flow plate heat exchangers, in the CFTHE, heat energy is exchanged via smooth tubes, usually made of stainless steel of various diameters and thicknesses according to the required performance. In the DAV Gasy, the tubes are coupled to tube-sheet by rolling, which guarantee a seal level up to 99.9% and if necessary, can be welded to guarantee a 100% sealing.
Tubes are also easy to clean, either manually or by automatic systems. Therefore, DAV GASY is the ideal solution for preheating air by recovering thermal energy from exhausted gases from boilers, engines, turbines and heavy industry in general. By varying the pipes length and the number of passages across pipes, it is possible to achieve an efficiency level up to 80%.