Will Sensors Pay?
Will Sensors Pay?
Case studies have shown that energy savings of up to 75% can be achieved by using occupancy sensors.
However, actual savings depend upon the occupancy patterns and on how frequently lights are left on when the space is unoccupied. To accurately estimate savings, occupancy and lighting use patterns must be monitored.
Manually documenting many spaces at one time (low initial cost) requires that a person walk around a building checking the occupancy and lighting status of rooms at frequent intervals.
Light loggers can provide automatic monitoring. Typically one logger is used for each space, so if many rooms are monitored at one time the initial investment can be high. (See IAEEL 2/94.)
Dorene Maniccia