G36ReheatTerminalBoxCoolingAirflowSetpoint

Brief Description

Terminal box with reheat when the zone state is cooling following the guideline 36 recommendations

Index Description

  • Section 5.6.5.1 in ASHRAE Guideline 36-2021

Datapoints Description

  • operation_mode: System operation mode

  • zone_state: Zone state (heating, cooling, or deadband (not in either heating or cooling))

  • v_cool_max: Maximum cooling airflow setpoint

  • v_min: Occupied zone minimum airflow setpoint

  • v_spt: Active airflow setpoint

  • heating_coil_command: Heating coil command

  • dat: Discharge air temperature

  • dat_min_spt: Minimum discharge air temperature setpoint

Type Verification Description

Procedure-based

Assertions Type

Pass

Assertions Description

  • if dat > dat_min_spt and heating_coil_command > heating_coil_command_tol

  • fail

  • else

  • switch operation_mode

  • case ‘occupied’

  • cooling_maximum = v_cool_max

  • minimum = v_min

  • case ‘cooldown’, ‘setup’

  • cooling_maximum = v_cool_max

  • minimum = 0

  • case ‘warmup’, ‘setback’, ‘unoccupied’

  • cooling_maximum = 0

  • minimum = 0

  • if cooling_minimum <= v_spt <= cooling_maximum

  • pass

  • else

  • fail

  • end