Building Envelope Improvements There are three basic ways that a building
loses heating or cooling energy: air infiltration, conduction through ceilings/walls/floors,
and thermal radiation through windows.
These energy losses and "gains" directly affect the heating & cooling costs
of your building. Reducing these undesirable transfers of energy will save you
money.
- Air Infiltration
Fresh air is an absolute necessity for a healthy work environment. However,
too much fresh air, or air that enters at uncontrolled locations, can be costly
from an energy perspective, and also lead to an uncomfortable work environment.
Note that any effort to reduce air infiltration should include a review of
the fresh air needs of the work space.
Caulking and Weather-stripping are the most cost-effective methods of saving
energy, by reducing the amount of air infiltration around doors, windows,
and building corners. These measures should be the first line of attack
against wasting energy.
- Conduction through Ceilings/Walls/Floors
Insulation is your primary defense against heat loss or gain through the exterior
surfaces of your building and can be a relatively easy method of saving energy.
You should also review the insulation value of your windows. Multiple pane
windows, some with inert gases in between each pane, can provide more than
double the insulating capabilities of your existing windows.
- Thermal Radiation
One example of thermal radiation is the heat you feel when sitting in direct
sunlight. Not only can thermal radiation add too much energy to your building,
but the heat inside your buildings can radiate through your windows, resulting
in energy loss. Reflective films can help to dramatically reduce the thermal
radiation losses. You should consult an expert to determine the appropriate
application of these films. Another way to reduce thermal radiation is through
exterior or interior window treatments which block or filter the transfer
of thermal radiation.
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