1. bookVolume 14 (2021): Issue 1 (December 2021)
Journal Details
License
Format
Journal
eISSN
2066-7744
First Published
12 Dec 2015
Publication timeframe
1 time per year
Languages
English
access type Open Access

Some aspects of plate number estimation of plate heat exchangers (PHEs). A case study

Published Online: 17 Dec 2021
Volume & Issue: Volume 14 (2021) - Issue 1 (December 2021)
Page range: 130 - 156
Journal Details
License
Format
Journal
eISSN
2066-7744
First Published
12 Dec 2015
Publication timeframe
1 time per year
Languages
English
Abstract

For the proper estimation of the plate number (N) of a plate heat exchanger (PHE) – in addition to the flow rates and thermophysical properties of fluids –, an appropriate correlation is needed for convective heat transfer coefficient (α) calculation. When one does not have a criterial equation for the corresponding plate shape, we propose a selecting method for α. With the suggested relationships from literature, we calculate the plate number of a geometrically known, similar heat duty PHE and choose those relationships that give the same plate number with the known heat exchanger. In our case study, the plate number determined by any of the screened equations for whole milk preheating has almost the same value (n = 10 ± 1) regardless of the method used to solve the PHE model (plate efficiency and Nconverg or Kconverg convergence methods). For liquids’ thermophysical property estimation, we recommend averaging the values given by equations from literature, followed by equation fitting.

Keywords

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