ID/OD Enhanced Surface for Improved Boiling Heat Transfer

Turbo-BII is a more efficient version of Turbo-B and is designed for light hydrocarbon boiling. The tube is configured in variations for both high pressure and low pressure refrigerant applications. The integral helical fins on the outside of the tube are modified to enhance the initiation of nucleate boiling sites, thus improving the over all heat transfer coefficient. The inside heat transfer coefficient is improved because of increased some surface area and turbulation induced by integral helical ridges on the inside surface. The availability of plain ends and intermediate lands makes Turbo-BII suitable for shell and tube evaporators.

The increased ID ridge count improves the overall heat transfer efficiency of Turbo-BII over Turbo-B, while slightly increasing the ID pressure drop.

Where there is a need for a low ID pressure drop, several sizes are available in Turbo-BII. This is accomplished by reducing the ID ridge height. It may also be supplied with a smooth bore.