Table 2.
Specifications of major components in the schematic layout.
| Solar PTC | ||||
| Location | Kolkata (22–38-59 N, 88–27-00E) | |||
| Air heating load (kW) | 18.65 | |||
| Mean solar radiant energy (W/m2) | 600 | |||
| Collector aperture | ||||
| Width, length (m) | 5.77 [37], 22.18 | |||
| Aperture area (m2) | 128.1 | |||
| Absorber tube: | ||||
| Diameter, length (m) | 0.066, 22.18 | |||
| Optical efficiency | 0.71 [37] | |||
| Thermal efficiency | 0.41 [35] | |||
| Heat exchanger | ||||
| Arrangement | Counter-flow | |||
| Air mass flow (kg/s) | 0.22 | |||
| Overall heat coefficient, U (W/m2K) | 296.5 | |||
| Tube side | ||||
| Heat convection constant (W/m2K) | 1264.1 | |||
| , (°C) | 30, 75 | |||
| Tube diameter, length (m) | 0.0158, 1.2 | |||
| Number of tube/passes | 30 | |||
| Shell side | ||||
| Heat convection constant (W/m2K) | 387 | |||
| , (°C) | 105, 60 | |||
| Diameter, length (m) | 0.6, 1.58 | |||
| Internal volume (m3) | 0.378 | |||
| Number of baffles, spacing (m) | 8, 0.12 | |||
| Air cooler | ||||
| Tube: surface area (m2) | 4.22 | |||
| Diameter, length (m) | 0.016, 84 | |||
| Fins: surface area (m2) | 1.80 | |||