MIL-HDBK-1133
other initial estimates. These initial values and adjustments
are derived from existing metered consumption data from
buildings, groups of buildings and ships, entire Navy
installations throughout the world, and other recognized ship and
building energy consumption data sources. This data has been
analyzed and reconciled to known consumption levels to arrive at
values that are considered as accurate as possible for a typical
building, ship, or process. Assistance is also provided for
other nonbuilding energy uses.
Other methods of arriving at energy or water
consumption values are available and used by design
professionals, engineers, architects, and energy managers. These
methods tend to be classical energy use aggregation models in
which estimated consumption is summed from individual estimates
of energy using equipment such as heating, cooling, water
heating, and lighting. Many methods use standard thermodynamic
calculations or calculation methods prepared and offered by
organizations such as ASHRAE. The predecessor to this manual -
Naval Facilities Engineering Command (NAVFAC) MO-303, relied on
elements of this type of method. In general, an assessment of
energy consumption with these methods requires large amounts of
detailed data for each building. Experience has shown that the
additional efforts required for these methods (over simpler
methods based on historical actual consumption data) do not
consistently provide more accurate estimates for existing
military building energy usage. However, if an activity has
relied on these methods and already collected the large amounts
of data needed, then its continued use may be warranted.
The allocation methodology described in this handbook
allocates total known energy or water use (usually utility
billings) to various buildings, ships, and processes independent
of the type of calculations used to estimate initial individual
energy consumption. This method uses the initial consumption
estimates derived for each building, ship, or process to
apportion the total installation energy and water consumption
equitably among users. It accounts for nonbuilding use such as
line losses, street lights, and energy production that may not be
applicable to building consumption as well as actual metered
consumption and other known quantities. This method reconciles
entire installation consumption such that all energy and water is
equitably accounted for. It is an integral part of the process
used to
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