Table 3.
Description of EnergyPlus inputs.
| Unit | Office | Serviced apartment | ||
|---|---|---|---|---|
| Internal loads | Occupant | – | 8 m2/person | 42 person/floor |
| Lighting | W/m2 | 15 | 15 | |
| Electric equipment | W/m2 | 25 | 12 | |
| Operating schedule | – | Based on the local BECa | Based on the local BECa | |
| Shading | – | No shading device | No shading device | |
| Thermostat set point | Cooling | °C | 24.5 | 24.5 |
| Heating | °C | 22 | 22 | |
| HVAC system | Air side | – | VAV | VAV |
| Water side | – | Direct seawater cooled chiller; COP: 4.135; Partload performance: default curves from EnergyPlusb | ||
| Supply air temperature | °C | Summer: 14 Winter: 18 | Summer: 14 Winter: 18 | |
| Infiltration | ACH | 0.1 | 0.1 | |
| Ventilation | – | 0.01 m3/s/person | 0.63 m3/s/floor | |
| Exterior wall | – | Concrete wall with gypsum | Concrete wall with gypsum | |
| Interior Wall | – | Concrete wall with gypsum | Concrete wall with gypsum | |
| Window construction | – | Curtain wall with double glazing | Curtain wall with double glazing | |
| Thermal zoning | – | Core and perimeter zoning | Core and perimeter zoning | |
a
BEC = Building energy code (EMSD) [30].
b
Seawater-cooled chiller system is not directly supported in EnergyPlus. A “DistrictCooling” object with the specified leaving temperature on condenser loop is used to simulate the effect of using seawater as a heat rejection method in this study.