Convection recuperators

These recuperators transfer heat (thermal energy) between primary and secondary flows by convection across smooth steel tubes.

Tube type recuperators can be supplied loose, to be inserted into a horizontal flue (underground or overhead), a vertical one (chimney) flue, or, alternatively, inside lined shell.

With the same operating principle, but intended to cool a primary fluid, gas coolers offer an alternative to air dilution in smoke purification systems. This equipment, as a  prior step to purification, prevents fumes reaching the purification systems at an excessively high temperature.

Dust content in the gases, as well as the capacity to separate dust from the gas stream, are design determining factors, which may require the installation of dust collection and extraction systems in areas with turns or widening.