Study on Comprehensive Performance of Three-Dimensional Tube Applied to Gas–Solid Two-Phase Flow Environment

Abstract

The three-dimensional tubular heat exchanger has excellent performance in single-phase flow, but its performance in gas solid two-phase flow is still lacking research. In this paper, analysis and comparison of heat exchanger prototypes made up of four different three-dimensional tubes by different comprehensive performance evaluation methods are carried out through experimental research and theoretical analysis. The research results show that the ratio of the long axis to the short axis of the three-dimensional tube has an important influence on its heat transfer performance and flow resistance. Furthermore, a reasonable ratio can be obtained by comparing its comprehensive performance. Among the comprehensive performance analysis results of four kinds of three-dimensional tubes, the comprehensive performance factor ηo-I of type I is the best which achieves the purpose of heat transfer enhancement. Results from the current research could provide beneficial guidance for further design and application of the three-dimensional tubular heat exchanger.

Optimization Design and Comparative Analysis of Enhanced Heat Transfer and Anti-Vibration Performance of Twisted-Elliptic-Tube Heat Exchanger: A Case Study

“…Liu et al [24] found that the shell-side heat-transfer coefficient per unit pressure drop of the twisted-elliptic-tube oil cooler is larger than traditional heat exchangers with segmental baffles. Mo et al [25] studied the heat-transfer and fluid flow performance of the twisted elliptic tube in the gas-solid two-phase flow environment. Al-Hadhrami et al [26] evaluated the performance of a twisted-elliptic-tube heat exchanger of an existing naphtha hydrotreating plant.…”