Investigation of Counterflow Microchannel Heat Exchanger with Hybrid Nanoparticles and PCM Suspension as a Coolant

Table 3

Solid wall separating two channels (Hh ≤ y ≤ Hh + t).

Location	Boundary condition	Comments
At x = 0		Adiabatic wall
At x = L		Adiabatic wall
At y = Hh	Th = Ts	Fluid-solid interface
At y = Hh + t	Tc = Ts	Fluid-solid interface
At z = 0		Adiabatic wall
At z = Wch		Adiabatic wall