Research Article
Energy and Economic Analysis of Curved, Straight, and Spiral Flow Flat-Plate Solar Water Collector
Table 1
Instrument specifications.
| Instrument | Range | Accuracy | Uncertainty (%) |
| Solar radiation meter (PYRA 300 V2) | 0–1800 W/m2 | ±1 | 0.57 | Temperature indicator (RTD Pt100Ω class A) | 0–100°C | ±0.3°C | 0.017 | Thermocouple wire (K-type) | 0–220°C | ±0.1°C | 0.057 | Measuring jar | 0–1000 mL | ±1 mL | 0.57 |
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