Data loggers can be used to track energy usage in various
parts of a building to verify equipment operating efficiency and to identify
areas where energy costs can be reduced.
·
Sub-metering : With ever increasing energy
costs, it is more important than ever to first know where the energy is being
used before coming up with a plan to correct problem areas or make improvements
that could lower energy bills. Assuming access is available to individual power
input lines or at service entry panels, wattage measuring and On/Off loggers
can be used to identify specific energy wasters by monitoring blowers,
compressors, pumps, boilers, heaters, or lights that are cycling too often or
running for too long. Also, individual areas within buildings can be monitored
for total unit energy usage to locate high-energy-use abnormalities.
·
Lighting : Total light usage in any type of
facility can gobble up a good share of power, especially if left on
unnecessarily for long periods of time. Light intensity (loggers which have
built-in photo sensors) or On / Off loggers can be placed as close as possible
to individual light sources or on ceilings or walls to record when lights are
on over various times. Data should be logged for a period long enough to cover
various times of day and night, as well as occupied and unoccupied periods. The
data gathered will not only detect direct light usage but can also help in
deciding whether the expense of permanently installed occupancy light
sensor/switches or some other remediation is justified. If changes are made to
reduce light use (or wattage reduction), the very same loggers can be
re-deployed in the same spaces later on to generate data to verify that the
changes were successful.
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