How much energy does a UFAD system really save over conventional overhead distribution?
A. That answer depends on a number of variables including whether economizer systems are being used and the type of airside distribution system. The energy savings results from lower TSP at the air handler vs conventional overhead systems. A quick analysis will show that if we ignore the energy savings due to increased economizer hours because our supply temperature is 62 degrees vs. 55 degrees (in an overhead system) and we assume that our floor-by-floor column units have been located correctly in the space layout so underfloor ductwork is not necessary, and the external static pressure at the unit is .3 or less, then we can safely say that underfloor systems will save between 6-10% in total KW hours consumed by the building (all other things being equal).
Related Questions
- Does energy need to be delivered to the grid under the Long-Term Master Agreement or it possible to deliver to the distribution system? Would a facility under a ComEd POG rate be precluded?
- What is the cost of a Flameless Catalytic Infrared Energy system compared to conventional systems that attempt to perform the same function?
- How do the costs of UFAD systems compare to those of overhead air distribution systems?
