Process intensification: Heat transfer characteristics of tailored rotating surfaces

Abstract

Convective heat transfer characteristics of four discs, each with a different surface configuration, have been experimentally studied. Water has been used as the test fluid and tests have been carried out for various flow rates and rotational speeds (250–890 r.p.m.). Average heat transfer coefficient as high as 16 kWm⁻²K⁻¹ has been obtained and it has been shown that significant enhancements can be achieved by using grooved discs.