Thermal-hydraulic performance of PFHEs is evaluated with CPF and VGPF.
A new design for plate-fins as CVGPF is proposed and evaluated.
CVGPF channel has a better performance compared to CPF and VGPF channels.
Performance of all the channels increases with mass fraction of ethylene glycol.
Correlations are developed for Nusselt number and friction of plate-fins.