On Some Results of Performance Analysis of Surface Heat Exchange of Transverse Flow Tube Bundles of Cylindrical Pipes and Profiled Channelswith Complex Configuration in the Air Flow

Abstract

Possible options are presented to arrange bundles of cylindrical smooth pipes of constant and variable cross-section and profiled channels made of thin-walled plates with two-sided spheroidal protrusions and hollows, allowing to intensify heat exchange, increase thermal energy efficiency and improve the mass and dimensional parameters of heat exchangers and devices. The results of experimental studies of heat and aerodynamic characteristics are given, including those obtained for the first time, and performed on their basis using an original methods for a comprehensive analysis of performance indicators for individual design variants of the convective surfaces under discussion.