Research Article
Effect of Installation of Solar Collector on Performance of Balcony Split Type Solar Water Heaters
Table 4
Performance of all-glass evacuated tubular collector at a surface slope angle of 90°.
| Date | Single row horizontal arrangement | Single row vertical arrangement | Jan. 24 | Jan. 25 | Jan. 28 | Jan. 29 | Jan. 30 | Jan. 23 | Jan. 24 | Jan. 25 |
| Ambient temperature (°C) | 21.7 | 16.6 | 14.6 | 14.7 | 15.6 | 16.3 | 17.2 | 16.6 | Average wind speed (m/s) | 0.5 | 0.7 | 1.3 | 1.6 | 0.7 | 1.4 | 0.6 | 0.7 | Irradiance (MJ) | 17.7 | 15.8 | 17.2 | 16.4 | 17.1 | 17.0 | 17.4 | 15.8 | Time (hr) | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | 6.0 | Initial temperature of tank (°C) | 14.4 | 12.7 | 12.7 | 13.1 | 13.6 | 15.2 | 13.8 | 14.2 | Final temperature of tank (°C) | 40.7 | 37.3 | 39.7 | 39.6 | 41.8 | 36.4 | 35.9 | 34.0 | Temperature rise (°C) | 26.3 | 24.6 | 27.0 | 26.5 | 28.2 | 21.2 | 22.1 | 19.8 | Tank volume (L) | 120 | 120 | 120 | 120 | 120 | 120 | 120 | 120 | Efficiency | 0.565 | 0.595 | 0.600 | 0.617 | 0.629 | 0.475 | 0.483 | 0.480 |
|
|