HEAT TRANSFER AROUND TUBES IN IN-LINE TUBE BANKS.

Abstract

An experimental study was made to investigate heat transfer and flow around tubes of in-line tube banks. Measurements were conducted for seven cylinder spacings in the Reynolds number range from 10**4 to 6 multiplied by 10**4. It is found that the mean heat transfer coefficient shows no essential variation with the cylinder spacing for the second and farther downstream cylinders. The flow through the tube bank deflects in the case of a very narrow cylinder spacing and the heat transfer behaviors under such situations are clarified.