Research Article
Improvement of Heat Pipe Solar Collector Thermal Efficiency Using Al2O3/Water and TiO2/Water Nanofluids
Table 5
Technical features of the pyranometer used in the experiment.
| Stability | 0.1 W/m2 | Accuracy | ±10 W/m2, ±%5 | Deflection | ±%3/year | Temperature-induced error | ±0.38 W/m2/°C | Measuring range | 1–3999 W/m2 | Sampling rate | 0.25 s | Working environment | 0°C–50°C, <80%RH |
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