TMC	traditional microchannel
MMC	manifold microchannel
MDMC	manifold dual-microchannel
MRFF−1	microchannel region of flow field−1
MRFF−2	microchannel region of flow field−2
cp,f	specific heat capacity of the fluid (J/(kg⋅°C))
h	height (μm)
k	thermal conductivity (W/(m⋅°C))
l	length (μm)
N	microchannel number
P	Pressure (Pa)
q	heat flux of heating surface (W/cm2)
T	temperature (°C)
ΔT	temperature different (°C)
u	velocity (m/s)
w	width (μm)
Subscript
1	flow field−1
2	flow field−2
c	microchannel
div	divider
f	fluid
in	inlet
max	maximum
min	minimum
out	outlet
s	solid
Green letters
μ	dynamic viscosity (Pa s)
ρ	density (kg/m3)