Table 7 Geometric and Functional Characteristics of BIPV-EAHE-WAHE Configurations.
Parameter | Configuration A (Series) | Configuration B (Parallel) |
|---|---|---|
Arrangement | EAHE → WAHE (sequential flow) | EAHE and WAHE operate simultaneously |
Air Flow Path | 1. Ambient air → EAHE → WAHE → Building | 1. Ambient air splits into EAHE and WAHE → Mixed air → Building |
Cooling Mechanism | Two-stage cooling: EAHE pre-cools, WAHE further cools | Parallel cooling: Air blended after independent cooling |
Key Components | - EAHE (buried 2 m underground) | - EAHE (buried 2 m underground) |
- WAHE (uses well water) | - WAHE (uses well water) | |
- BIPV panels (power fans/pump) | - BIPV panels (power fans/pump) | |
Mass Flow Rates | - Air: 1.18 kg/s (optimized) | - Air: 1.18 kg/s (EAHE), 0.68 kg/s (WAHE) |
Heat Exchanger Dimensions | - EAHE: Length = 23.79 m, Diameter = 0.49 m | - EAHE: Length = 23.79 m, Diameter = 0.49 m |
- WAHE: Length = 23 m, Diameter = 0.027 m | - WAHE: Length = 23 m, Diameter = 0.027 m | |
Temperature Reduction | Outlet air: ~ 14 °C (higher ΔT due to series cooling) | Outlet air: ~ 14.9°C (lower ΔT due to parallel blending) |
Energy Output (August) | 25 kWh | 41 kWh |
Advantages | Higher cooling efficiency (lower outlet temperature) | Higher total energy output (better for power generation) |
Disadvantages | Lower total energy output | Slightly higher outlet temperature |
