Fig 1.
Geometrical configuration of the inclined channel with adiabatic extensions.
Fig 2.
a: Average Nusselt number versus the modified Rayleigh number in the case of a vertical channel (Ar = b/H = 1/5 and ϕ = 90°). b: Average Nusselt number versus the modified Rayleigh number in the case of an inclined channel (Ar = b/H = 1/30 and ϕ = 30°).
Fig 3.
a: Maximum dimensionless PV module temperature as a function of channel aspect ratio for different tilt angles at Ra* = 105 (channel without extensions). b: Dimensionless mean velocity as a function of channel aspect ratio for different tilt angles at Ra* = 105 (channel without extensions).
Fig 4.
a: Velocity profiles at the channel inlet for different tilt angles (Ar = b/H = 1/8; Ra* = 105). b: Velocity profiles at the channel outlet for different tilt angles (Ar = b/H = 1/8; Ra* = 105).
Fig 5.
Dimensionless temperature profiles along the upper channel wall for different tilt angles (Ar = b/H = 1/8; Ra* = 105).
Fig 6.
a: Dimensionless mass flow rate as a function of tilt angles for different modified Rayleigh numbers (Ar = b/H = 1/8). b: Average Nusselt number as a function of tilt angles for different modified Rayleigh numbers (Ar = b/H = 1/8).
Fig 7.
a: Dimensionless mass flow rate as a function of tilt angles for different adiabatic extensions at the channel inlet and outlet (Ar = b/H = 1/8; Ra* = 105). b: Average Nusselt number as a function of tilt angles for different adiabatic extensions at the channel inlet and outlet (Ar = b/H = 1/8; Ra* = 105).
Fig 8.
a: Dimensionless mass flow rate as a function of normalized adiabatic extension at the channel outlet for different modified Rayleigh numbers (Ar = b/H = 1/8; ϕ = 30°). b: Average Nusselt number as a function of normalized adiabatic extension at the channel outlet for different modified Rayleigh numbers (Ar = b/H = 1/8; ϕ = 30°).
Fig 9.
a: Channel exit velocity profiles for different adiabatic extension Eout (Ar = b/H = 1/8; Ra* = 105; ϕ = 30°). b: Dimensionless temperature profiles along the upper channel wall for different adiabatic extension Eout (Ar = b/H = 1/8; Ra* = 105; ϕ = 30°).