Research Article
Effect of Installation of Solar Collector on Performance of Balcony Split Type Solar Water Heaters
Table 5
Performance of solar water heater with flat-plate collector at a fixed surface slope angle of 90° under natural circulation and forced circulation.
| | Date | Natural circulation | Forced circulation | | Jan. 24 | Jan. 25 | Feb. 3 | Feb. 4 |
| | Ambient average temperature (°C) | 17.3 | 16.6 | 17.4 | 16.6 | | Average wind speed (m/s) | 0.6 | 0.7 | 1.1 | 1.4 | | Irradiance (MJ) | 17.6 | 15.8 | 15.7 | 15.3 | | Time (hr) | 6.0 | 6.0 | 6.0 | 6.0 | | Initial temperature of tank (°C) | 14.3 | 13.8 | 16.2 | 19.6 | | Final temperature of tank (°C) | 24.4 | 22.9 | 42.3 | 44.8 | | Temperature rise (°C) | 10.1 | 9.1 | 26.1 | 25.2 | | Efficiency | 0.218 | 0.219 | 0.629 | 0.654 | | Useful energy (MJ) | 5.08 | 4.56 | 13.12 | 12.64 | | Consumption of energy (MJ) | 0.0 | 0.0 | 1.73 | 1.73 |
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