Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7054200 | International Journal of Heat and Mass Transfer | 2018 | 14 Pages |
Abstract
Boiling of hydrocarbon mixtures inside plate fin heat exchangers (PFHEs) is most prevalent in many cryogenic processes of petrochemical plants. However, there is very little experimental data and a lack of prediction methods regarding boiling mixtures in PFHEs. This paper established an experimental setup that utilized a single-stage cryogenic cycle to measure the boiling heat transfer coefficients (HTCs) for hydrocarbon mixtures inside a perforated PFHE. The components of the mixtures include methane, ethylene, propane and isobutene. Twenty-seven sets of experiments were conducted under various operating conditions and 261 data points of the boiling HTC were obtained. The experimental conditions cover the mass fluxes of 3.69-19.38â¯kgâ¯mâ2 sâ1, pressures of 1.35-5.22â¯bar and vapor qualities of 0.05-0.77, which are representative of a wide range of actual industrial conditions. The corresponding heat fluxes only range from 55.7 to 3837.3â¯Wâ¯mâ2. The experimental boiling HTC varies from 21.4 to 1055.7â¯Wâ¯mâ2 Kâ1, and it is a strong function of the heat flux. Moreover, twelve existing correlations were assessed by using the present experimental data. The results show that the HTCs predicted by Chen type correlations were not consistent with the experimental results, and a new correlation developed from mini-channel correlations was recommended.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Rixin Li, Jinping Liu, Jiayao Liu, Xiongwen Xu,