Research Article
Comparison Evaluations of VRF and RTU Systems Performance on Flexible Research Platform
Table 2
Regression models for RTU power consumption for heating season.
| Category | Operation | Regression models | R2 |
| Building load (kWh) | RTU100 | | 0.92 | RTU75 | | 0.90 | RTU50 | | 0.89 | M_DOASadd (kWh) | RTU100 | | N/A | RTU75 | | N/A | RTU50 | | N/A | M_RTUDX + Fan (kWh) | RTU100 | | 0.89 | RTU75 | | 0.86 | RTU50 (if a < 5°C) | | 0.34 | RTU50 (if a > 5°C) | | 0.82 | M_RTUcooling (kWh) | RTU100 | | 0.98 | RTU75 | | 0.92 | RTU50 | | 0.91 | M_NGheating (kWh) | RTU50 (if a < 4.4°C) | | 0.07 | RTU50 (if 4.4°C < a < 10°C) | | 0.91 | RTU50 (if a > 10°C) | Zero | N/A |
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a: outdoor air temperature (°C); b: global horizontal solar radiation (W/m2); c: time of day; d: M_RTUDX + Fan.
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