The heat exchanger features small smooth tubes permitting the water to flow freely unlike e.g. in finned tube exchangers. The typical surface area (m2 per m3 of unit volume) is of the same order of magnitude as standard packing materials applied in conventional scrubbers. This explains why odour removal efficiencies from 60 to over 90% have been achieved with this system in various applications.
Due to its specific characteristics this type of plastic heat exchanger is particular suitable for the OCC odour control system. By cooling the process air, and thus the removal of large quantities of water vapour, the air becomes reconditioned and can be reused in the process. The advantage is obvious: contaminated air is no longer released into the atmosphere and odour emission is reduced to nil. This odour control technique is unmatched by any other end-of-pipe technology.
Modular heat exchangers are available for air flows of up to approx. 100,000 m3/h and 8 MW cooling power.