Trane International Inc.

Todd A Michael

Jon Phillip Hartfield

H Kenneth Ring

A heat exchange tube combines an external surface feature, for example having crushed fins and cavities, which can have very high boiling enhancement characteristics, with an internal surface feature, for example having high performing intersecting helices, e.g. 'cross hatched' with an intersecting helix angle. The new tube can provide a high performing tube in a shell and tube evaporator that can be relatively smaller, more efficient, and that can use relatively lower refrigerant charge.

Growing community of inventors

West Salem, WI, United States of America

Todd A Michael