Study of the axial heat conduction in parallel flow microchannel heat exchanger

4Citations
Citations of this article
30Readers
Mendeley users who have this article in their library.

Abstract

In this paper the axial heat conduction in an isosceles right triangular microchannel heat exchanger is numerically investigated, for laminar, 3D, incompressible, single-phase, steady state flow. The behaviour of axial heat conduction in the separating wall under different conditions is studied. The solution was obtained by solving the continuity and Navier–Stokes equations for the hot and cold fluids by using the pressure-correction method to obtain the velocity distribution, and then the energy equations were solved for the two fluids and the separating wall simultaneously to obtain the temperature distribution. The governing equations are discretized using finite-volume and the hybrid differencing scheme with FORTRAN code was used. Various parameters that can have effect on the axial heat conduction were investigated. The results showed that, the axial heat conduction plays an important role in a parallel flow microchannel heat exchanger and the factors affecting the local and average axial heat conduction are; Reynolds number (Re), thermal conductivity ratio (Kr), hydraulic diameter (Dh), thickness of separating wall (ts) and channel volume. Increasing of Re, Krand tsleads to an increase in the axial heat conduction while increasing of Dhand channel volume leads to a decrease in the axial heat conduction.

Cite

CITATION STYLE

APA

Hasan, M. I., Hasan, H. M., & Abid, G. A. (2014). Study of the axial heat conduction in parallel flow microchannel heat exchanger. Journal of King Saud University - Engineering Sciences, 26(2), 122–131. https://doi.org/10.1016/j.jksues.2012.12.004

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free