HEAT-TRANSFER OF NATURAL-CONVECTION AROUND 2 VERTICALLY ARRANGED HORIZONTAL CYLINDERS

In this study, heat transfer of natural convection around two vertically arranged horizontal cylinders was investigated experimentally. Heat transfer coefficients were measured in a wide variety of values of ratio H/D. The results showed that the heat transfer rates around two vertically arranged horizontal cylinders for 1<H/D<4 became larger than those for a single cylinder. However, a reduction of heat transfer for H/D<1 was observed. © 1990, The Society of Chemical Engineers, Japan. All rights reserved.