Fin Tubes

A Finned tube heat exchanger will typically have tubes with fins attached to the outside of them . There will finned tube square usually be a liquid flowing through the inside of the tubes and air or some other gas flowing outside of the tubes , where the additional heat transfer surface area due to the finned tube , increases the heat transfer rate . For a cross flow fin tube exchanger , the fins will typically be radial fins either circular or square , as shown in the pictures