Table 4 Operating-theatre internal gains and control settings implemented in TRNBuild (specialities OT).
TRNBuild gain/control | Assigned value | Unit | Schedule | Description/source |
|---|---|---|---|---|
Occupancy gain (Gains_OT) | 0.125 persons/m\(\vphantom{0}^{2}\), 160 W/person | W/m\(\vphantom{0}^{2}\) | OCC_OT | Surgical staff + patient metabolic load; based on ASHRAE 62.1 and UH Oujda practice. |
Equipment gain (Gain_Equip_OT) | 75 W/m\(\vphantom{0}^{2}\) | W/m\(\vphantom{0}^{2}\) | OCC_OT | Surgical lights, monitors, anesthesia machines; aligned with ASHRAE 90.1 surgery baseline. |
Lighting gain (Gain_Light_OT) | 23.68 W/m\(\vphantom{0}^{2}\) | W/m\(\vphantom{0}^{2}\) | LIGHT (on during activity) | Surgical task lighting; ASHRAE 90.1 lighting density. |
Ventilation rate | 20 ACH (100% OA) | 1/h | VENT_OT | High-ventilation regime consistent with ASHRAE 170 for surgery. |
Cooling availability | 22\(\vphantom{0}^{\circ }\)C setpoint, power unlimited | \(\vphantom{0}^{\circ }\)C/W | COOL_OT | Cooling dominates daytime loads; humidity control active. |
Relative humidity setpoint | 50% | % | COOL_OT | Sterile-room humidity band (ASHRAE 170). |
Infiltration | 0.20 ACH | 1/h | Constant | Minimal leakage due to positive pressurisation. |
