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.
Highlights
The performance of an excellent heat exchanger should meet the process requirements, and have good economic benefits
The results show that the heat transfer performance of the three-dimensional tube is better than that of the smooth tube after Xiuzhen Li et al [3,4,5], who studied the heat transfer performance
The air flows along their axis and is disturbed and destroyed by the special shape structure of the three-dimensional tube, which improves destroyed by the special shape structure of the three-dimensional tube, which improves the convective heat transfer coefficient on the air side and strengthens the heat exchange the convective heat transfer coefficient on the air side and strengthens the heat exchange between air and steam
Summary
The performance of an excellent heat exchanger should meet the process requirements, and have good economic benefits. As a widely used enhanced heat transfer element in recent years, many scholars have fully studied the heat transfer characteristics and resistance characteristics of the three-dimensional tube in single-phase medium; comprehensive performance research in gas–solid two-phase flow is relatively low, and there is little research on its performance evaluation methods. The results show that the heat transfer performance of the three-dimensional tube is better than that of the smooth tube after Xiuzhen Li et al [3,4,5], who studied the heat transfer performance (coefficient of performance) of the refrigeration unit. The results show that the heat transfer performance of the three-dimensional tube is better than that of the smooth tube after
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
