Research Article
Comparison Evaluations of VRF and RTU Systems Performance on Flexible Research Platform
Table 1
Building and HVAC system specification.
| Location | Oak Ridge, Tennessee, USA | Building size | Two-story, 12.2 m × 12.2 m, 4.3 m floor-to-floor height | Exterior walls | Concrete masonry units with face brick, RUS-11 (RSI-1.9) fiberglass insulation | Floor | Slab-on-grade | Roof | Metal deck with RUS-18 (RSI-3.17) polyisocyanurate insulation | Windows | Double-pane clear glazing, 28% window-to-wall ratio | Baseloads | 9.18 W/m2 lighting power density, 14.04 W/m2 equipment power density | Baseline HVAC system | 44 kW, 9.7 EER rooftop unit; 81% AFUE natural gas furnace; VAV terminal units and electric reheat | VRF system | 42 kW VRF system with a DOAS |
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