Research and Development of Printed Circuit Heat exchanger
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Department of Mechanical and Production Engineering(MPE), Islamic University of Technology(IUT), Board Bazar, Gazipur-1704, Bangladesh
Abstract
The present report is a summary of modern, experimental, numerical, and analytical studies on the printed
circuit board heat exchanger geometries and will include zigzag, serpentine, straight, wavy, and cellular
channel designs to arrive at practical conclusions on the efficiency of high-performance compact
recuperators with and without the use of He-Xe and supercritical 𝑠𝐶𝑂2 environments. Printed Circuit
Heat Exchangers (PCHEs) are known to have a high ratio of heat-transfer area to volume and demonstrate
desirable traits in respect of their pressure and temperature performance and have been proposed to be
used in micro transport reactors, in 𝑠𝐶𝑂2 or Brayton systems. In this context, geometry is a critical variable
that represents the trade-off between thermal effectiveness and pressure drop: zigzag and cellular zigzag
designs can considerably improve the effectiveness and the heat-transfer coefficient compared to straight
or serpentine channels, but at the price of a larger pressure drop; but with possible compensations across
modified zigzag designs, with cellular designs or with channel designs made of straight channels, or
simply three-dimensional wavy or sinusoidal geometries. The secondary effects of interest encompass:
axial conduction through thin plates, fin performance, the sensitivity of working fluid properties (such as
the
He-Xe mole fraction or 𝑠𝐶𝑂2 operation just above pseudo-critical conditions), and
mechanical/manufacturing constraints (including brazing, tolerances, and stresses), all of which exert a
profound influence on the performance and durability that can be attained. It is recommended that multi
objective geometry optimization (considering performance, pressure drop, and mass) be undertaken,
experimental validation should occur under conditions relevant to the application (such as He-Xe mixtures
and 𝑠𝐶𝑂2 transcritical operations), and enhancements in materials and joining techniques should be
pursued to mitigate thermal stresses and leakage risks; furthermore, additional research on fouling,
transient response, and manufacturability is warranted.
Description
Supervised by
Dr. Mohammad Monjurul Eshan,
Professor,
Department of Mechanical and Production Engineering(MPE),
Islamic University of Technology (IUT)
Board Bazar, Gazipur-1704, Bangladesh
This thesis is submitted in partial fulfillment of the requirements for the degree of Bachelor of Mechanical and Production Engineering, 2025
Keywords
Citation
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