Estimated Annual Energy Savings

After monitoring the Irvine Office Building and reviewing the analyses data, several energy conservation measures were identified.

One main energy conservation measure -- improved control of the electric duct resistance heaters -- is recommended for implementation. Two other measures were identified -- improved chiller plant scheduling and repair of leaks in the air-handling system -- but due to minimal energy savings, the measures were not recommended for implementation.

From the one recommended measure, it is estimated that the building owner will realize $111,800 in energy savings. With the cost of improving the control of the electric duct resistance heaters estimated at $73,000 and the cost of the engineering analyses paid by Southern California Edison and the State of California, the recommissioning work at the Irvine Office Building will provide a simple payback of eight months.

The accompanying pie charts show actual energy costs before and estimated energy costs after the recommissioning program. The energy savings will be achieved by lowering peak demand and reducing energy use.

The utility bills will continue to be monitored by AEC engineering staff after the measure is implemented to ensure the energy savings are achieved.