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Table 9. Observations Of Annual Simulation Results For
Las Vegas
| Las Vegas, Nevada | |
| Simulation Description | Observations Of Results |
| Reference case | (R-28 ceiling, 1:150 vented attic, ducts in attic, no duct leakage, R-19 walls, double glazing) |
| Sealed R-40 sloped | Good for cooling, excellent for heating |
| White tile, sealed R-28 sloped | Excellent for cooling, no difference for heating |
| Ducts in conditioned space | Always good |
| Sealed R-28 sloped | No difference for cooling, very good for heating |
| White tile | Very good for cooling, penalty for heating due to reduced solar heat gain |
| 1:300 Attic vent | Very little net difference from 1:150 reference case |
| Sealed R-40 flat | Penalty on cooling, saves on heating, nets essentially the same as reference case |
| Sealed R-28 flat | Not recommended |
| Duct leak 10% ret 5% sup | Never good |
| Duct leak 15% ret 10% sup | Never good |