Variables examined for system level validation included cooling and heating coil valve positions, room air temperature, outdoor air damper
position and hot water flow rate.
This fluctuation is not observed in the simulation because the movement of the air damper
was not taken into consideration in the computation.
recirculation air damper
leakage (10% of full flow)
The lower limit can be done in practice by creating an outdoor air damper
1[degrees]C, the maximum CUSUM score is comparable with the value when fresh air damper
leakage is 0.
Demand Control Ventilation (DCV) strategies can be more easily implemented through the modulation of the primary air damper
to maintain zone level CO2 concentration.
The exhaust air damper
was fully closed and fully opened for the duration of each test.
The major components in an AHU include the supply and return fans for delivering air, cooling and heating coils for heat transfer from water to air, outside air, return air and exhaust air dampers
for regulating airflows, and chilledwater pumps and heatingwater pumps for pumping heat transfer fluids (i.
Using pattern recognition techniques to identify logical locations of system components is based on the assumption that, given a specified test sequence (a combination of actions by supply fan, return fan, outside air damper
, return air damper
, exhaust air damper
, cooling coil valve, heating coil valve, chilled-water pump, heating-water pump, etc.
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For a parallel terminal unit, the fan typically operates only after the primary air damper
is partially or completely closed to maintain airflow into the zone or to moderate the temperature of air (reheat) supplied to the zone to maintain the zone temperature.
DCV systems can be incorporated into existing HVAC equipment and often times operate in conjunction with existing economizer controls, sharing the same outdoor air damper