Early Energy Management Projects: Eliminate Leaks— Both Mass and Energy

Abstract

In response to the request for early energy management projects
that have good paybacks, are easy to implement, and don’t irritate any-
one, it is suggested that facilities consider the formation of an in-house
maintenance program to eliminate mass and energy leaks in building
systems.
One definition of a leak is “any means of unintended entrance or
escape,” and this general definition suits the purpose of this letter. Build-
ing owners, operators, and occupants are all familiar with leaks that can
be seen, such as water leaking from pipes and condensate drain pans
that stains ceiling tiles, or felt, such as air infiltrating a drafty window
near a desk. People are less familiar with energy leaks; these can cause
similar problems and have comparable costs. This letter presents some
examples of leaks, associated losses, and paybacks.
Water leaks commonly occur at joints and fittings where pipes
change direction or make connections to other devices such as valves.
These are obviously easy to spot. A leaky component in a hydronic
HVAC system will cause a water leak (chilled, hot, or condenser water)
that can result in wasted energy usage from a boiler cooling tower or
pump, as well as create chemical treatment costs. These leaks are un-
necessary, and building occupants should either know that they exist
or that they have been remedied. The result of eliminating these leaks
will be lower operating costs and cleaner, safer, mechanical areas.