Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The only outputs available for variable volume fans are:
If by "fan speed", you mean the rotational speed of the impeller, this is not available.
You can calculate the load factor based on the mass flow rate of air through the fan (using the system node mass flow rate output) and the inputs for maximum flow rate, and the fan power coefficients. The algorithms used in EnergyPlus are defined here in the Engineering Reference.
| | 2 | No.2 Revision |
The only outputs available for variable volume fans are:
If by "fan speed", you mean the rotational speed of the impeller, this is not available. Though, you might be able to approximate it from the power factor.
You can calculate the load factor based on the mass flow rate of air through the fan (using the system node mass flow rate output) and the inputs for maximum flow rate, and the fan power coefficients. The algorithms used in EnergyPlus are defined here in the Engineering Reference.
