Table 1 Simulation parameters
Element | Parameter | A | B |
|---|---|---|---|
Room | Width (x), m | 6 | 6 |
Length (y), m | 7.8 | 13.14 | |
Height (z), m | 2.75 | 2.75 | |
Emitter | Mode (n) | 1 | 1 |
Power (PE), W | 0.4 | 0.4 | |
Position (x, y, z), m | (3, 3.9, 1) | (3, 6.57, 1) | |
IR detector | Active area (AR), mm2 | 2 | 2 |
Height (z), m | 1 | 1 | |
Responsivity (R), A/W | 0.6 | 0.6 | |
Minimum power detected, W | 10-12 | 10-12 | |
Concentrator | Refractive index | 1.8 | 1.8 |
Exit aperture, mm | 0.8 | 0.8 | |
Band-pass filter | Number of layers | 20 | 20 |
Peak transmission (T0) | 0.92 | 0.92 | |
Effective index (ns) | 2.293 | 2.293 | |
Filter order (m) | 3 | 3 | |
Angular bandwidth (Δψ) | ψ c | ψ c | |
λ0, nm | 810 | 810 | |
Tungsten lamps | The corner lamp is located at (x, y) | - | (1.5, 3.57) |
Lamp spectral density, W/nm | - | 0.037 | |
Windows | Diffused solar radiation, W/m2 | 10 | 10 |
Window area, m2 | 3.6 | 5.3 | |
Simulation | Resolution (Δt), ns | 0.2 | 0.2 |
Bounces (k) | 20 | 20 | |
Number of rays (N) | 500,000 | 500,000 | |
Materials | Wood (ρ, rd, m) | (0.63, 0.6, 3) | (0.63, 0.6, 3) |
Varnished wood (ρ, rd, m) | (0.75, 0.3, 97) | (0.75, 0.3, 97) | |
Cement (ρ, rd, m) | (0.40, 1.0, -) | (0.40, 1.0, -) | |
Ceramic floor (ρ, rd, m) | (0.16, 0.7, 20) | (0.16, 0.7, 20) | |
Glass (ρ, rd, m) | (0.03, 0.0, 280) | (0.03, 0.0, 280) |