Abstract
A spiral wire was used to augment the heat transfer inside the tubes of surface condensers or shell-and-tube heat exchangers. A spiral wire with a reinforcing component in the direction of the spiral axis has been investigated as a fouling cleaner on the internal surface of a tube, when it is driven in a reciprocating motion with the help of reinforcing wires. When it stays in the tube, it augments the convective heat transfer. Based on the an experimental investigation, the relationships among the heat transfer, drag, cleaning effectiveness, fouling rates, and geometric variables of the cleaner-augmenter performance were found. The results of the experimental investigations on the cleaner-augmenter and the comprehensive evaluation criterion for the device as a fouling cleaner are presented along with the dimensions of tube diameter, wire diameter, and pitch.
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