MeatWagon
Mechanical
- Mar 16, 2007
- 5
I am trying to evaluate the savings benefits of installing a VFD controlled fan. I can estimate the potential power usage of the VFD by applying the affinity laws because I have a good air flow demand profile for the system.
However, the current operation uses outlet dampers and/or inlet vanes to control the air flow. I am trying to figure out how to calculate the current power consumption as baseline usage. Is there an equation I can use to estimate fan power usage as a fuction of damper controlled flow? Is the power load profile different for inlet vane control than outlet damper control? I have the fan motor data but I do not have a fan performance curve. Is a fan curve necessary for my purposes?
However, the current operation uses outlet dampers and/or inlet vanes to control the air flow. I am trying to figure out how to calculate the current power consumption as baseline usage. Is there an equation I can use to estimate fan power usage as a fuction of damper controlled flow? Is the power load profile different for inlet vane control than outlet damper control? I have the fan motor data but I do not have a fan performance curve. Is a fan curve necessary for my purposes?
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