An experimental study of thermal performance of shell-and-coil heat exchangers |
| |
| Authors: | Nasser Ghorbani Hessam Taherian Mofid Gorji Hessam Mirgolbabaei |
| |
| Affiliation: | 1. School of Mechanical Engineering, University of Leeds, Leeds, England;2. Department of Mechanical Engineering, Babol Noshirvani University of Technology, Babol 47144, Iran;3. Department of Mechanical Engineering, Islamic Azad University, Jouybar branch, Jouybar, Iran |
| |
| Abstract: | In the present study an experimental investigation of the mixed convection heat transfer in a coil-in-shell heat exchanger is reported for various Reynolds and Rayleigh numbers, various tube-to-coil diameter ratios and dimensionless coil pitch. The purpose of this article is to assess the influence of the tube diameter, coil pitch, shell-side and tube-side mass flow rate over the performance coefficient and modified effectiveness of vertical helical coiled tube heat exchangers. The calculations have been performed for the steady-state and the experiments were conducted for both laminar and turbulent flow inside coil. It was found that the mass flow rate of tube-side to shell-side ratio was effective on the axial temperature profiles of heat exchanger. The results also indicate that the ? − NTU relation of the mixed convection heat exchangers was the same as that of a pure counter-flow heat exchanger. |
| |
| Keywords: | Heat exchanger Helical coil Forced convection Heat transfer |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
