The study of hydraulic regime changes in the channels of plate heat exchangers for the manufacture of residential hot water is the focus of this work.
The working circumstances in which the heat exchange process occurs, which are
exacerbated by the formation of dirt on the surfaces of the exchanger plates,
are of particular importance.
The right approach to handling the challenge of modelling these complicated
processes, which is principally represented in the choice of starting boundary
conditions inside numerical simulations, is based on their consideration in
these shifting situations.
Plate heat exchangers are one of the most efficient forms of small heat
exchangers for heat transfer amplification. Because of their small dimensions,
low weight and cost, and the decreased area required for installation and
maintenance when compared to tubular heat exchangers, they are used in many
industrial processes. Heat is transferred in these exchangers by
complex-geometry channels generated by two contacting profiled plate heat
exchangers. Due to disturbance and impact in the boundary layer,
secondary-reverse flow, and swirl to a minor extent, fluid flows in such ducts
are unstable. The goal of this research is to compare the operating parameters
of plate heat exchangers derived from CFD simulation with the parameters of
their operation in real-world settings. The results reveal that in a certain
domain of Re numbers (from 8900 to 27650), CFD simulation can accurately
forecast the intensity of heat exchange and fluid flow, with a few exceptions,
as well as the fluid's output temperature and pressure decrease. Modeling fluid
flow can reveal the shear stress distribution, which is crucial for forecasting
contaminated plate heat exchangers.
Dragan Mandic,
JKP Belgrade Power Plants, Savski Nasip 11, Belgrade, Serbia.
Please see the link here: https://stm.bookpi.org/NTPSR-V4/article/view/6932
