Energy report for an air handling unit
Result – Energy report for an air handling unit
The report gives an overview of energy flows in an individual AHU.
Data is presented in the following categories:
Category | Comment |
Heating | Heating energy supplied to all heating coils. |
Cooling | Energy removed by all cooling coils. Note that a significant part of this energy may be latent due to condensation. |
Heat recovery | Heating energy recovered in AHU air-to-air heat exchanger or mixing box. |
Cold recovery | D:o for cooling. |
Humidification | Energy used by humidification equipment. |
Fans | Energy used by fans. |
The data for report is collected by energy meter models (EMETER and EMETER2) that exist in the AHU macro. When a custom AHU macro is built, the user should check (and fix, if required) the connections of EMETER.INPOWER to variables that calculate the power, as described in the table below.
category
EMETER model
Typically connected to
AHU heating
EmeterHeat
QHEAT in heating coil (type HCSIMCTR)
Q in heating coil (type HCSIM)
QELACT in electric coil (type HCEL)
AHU Cooling
EmeterCool
QCOOL in cooling coil (type CCSIMCTR)
QTOTOUT in cooling coil (type CCSIM)
Heat recovery
EmeterRecycle
QACTUAL in heat exchange model (type HXSIMCTR)
Cold recovery
Humidification
EmeterHum
QEL in humidifier model (type STINJCTR)
Fans
EmeterFans
QSUP in fan model (type CEFAN)
PowerSup in axial fan (type AxialFan)
The time evolution of the individual terms can be followed by selecting Log sources in the List of output objects.