l1	Microchannel length (mm)
l2	Plenum Length (mm)
l3	Bend length (mm)
l4	Inlet/Outlet length (mm)
w1	Inlet/Outlet width (mm)
w	Width of microchannel (mm)
ws	Space between microchannels (mm)
L	Multi-Microchannel model length (mm)
Lc	Microchannel model length (mm)
W	Microchannel model width (mm)
${\mathsf{\alpha }}_{\mathrm{ch}}$	Aspect ratio of microchannel
$\mathsf{\theta }$	Angle of plenum (mm)
$\mathrm{Re}$	Reynolds Number
$\mathrm{Nu}$	Nusselt Number
${\mathrm{Nu}}_{\mathrm{o}}$	Benchmark Nusselt Number
$\mathrm{f}$	Friction Factor
${\mathrm{f}}_{\mathrm{o}}$	Benchmark Friction Factor
${\mathrm{D}}_{\mathrm{H}}$	Hydraulic Diameter (mm)
${\mathrm{A}}_{\mathrm{ht}}$	Base area of microchannel (mm2)
$\mathrm{Q}$	Total heat rate (J/s)
$\dot{\mathrm{m}}$	Mass flow rate (kg/s)
$\dot{\mathrm{V}}$	Volume flow rate (m3/s)
$\mathrm{h}$	Height of microchannel (mm)
${\mathrm{v}}_{\mathrm{in}}$	Inlet velocity (m/s)
${\mathrm{P}}_{\mathrm{power}}$	Pump power (W)
${\mathrm{C}}_{\mathrm{p}}$	Specific heat (J/kg.k)
$\mathsf{\rho }$	Fluid density (kg/m3)
$\mathsf{\mu }$	Fluid Viscosity (Pa.s)
$\mathrm{k}$	Thermal Conductivity (W/m.k)
$\mathrm{T}$	Temperature (K)
${\mathrm{T}}_{\mathrm{W}}$	Wall Temperature (K)
$\Delta \mathrm{T}$	Temperature Difference (K)
$\Delta \mathrm{P}$	Pressure Difference (Pa)
TPF	Thermal Performance Factor
Subscript
$\mathrm{f}$	Fluid (Water)
$\mathrm{nf}$	Nanofluid
$\mathrm{np}$	Nanoparticle
$\mathrm{i}$	Inlet
o	Outlet
$\mathrm{m}$	Mean
$\mathrm{s}$	Source
$\mathrm{so}$	Solid