BPI _ Building Science Principles
(GLOSSARY)
217.- Weatherstripping
An energy efficiency measure that involves installing a material to seal air
leaks around components that open, close, and generally move (exterior
doors and windows).
2.- ΔP (Delta P)
The difference in measured air pressure between two areas
3.- ΔT (Delta T)
The difference in temperature between two areas
4.- Air Barrier
A material used for controlling air flow
,5.- ACH (Air Change per Hour)
How air exchange rate is typically expressed
ACH = CFM x 60 / volume
Example: A house is leaking at rate of 67 CFM. the volume of the house is
8,000 cubic feet (cu. ft)
ACH = 67 x ,000 =4,,000 = .5
6.- AFUE (Annual Fuel Utilization Efficiency)
A measure of how efficiently a furnace or boiler converts fuel to heat, on
average, over a typical year.
7.- Air change rate
The number of times the interior volume of air changes over one hour.
9.- Airflow
,The movement of air in the house
8- Air Sealing
The practice of installing appropriate materials to stop airflow in certain areas
of the house
10.- Algorithm
A formula that energy modeling software uses to estimate a house's energy
usage
11- Argon
An inert gas that can be placed between the panes in a multi-pane window to
further improve the window's thermal resistance.
12.- Atmospheric Vent
A type of heating system vent in which combustion by-products exhaust from
the house up through a chimney by stack effect due to the natural buoyancy
of hot gases.
, AD
13.- Attic
The indoor space under the roof at the top of a house.
14.- Average R-value
A way of determining the R-value of a space that has adjacent areas of
differing R-values (an attic floor with insulation everywhere except around the
hatch).
15.- Awning
An element that can be installed on the exterior of a house over doors and
windows to provide shading.
16.- B-vent
A vent made from double-wall metal.
17.- Balanced System
(GLOSSARY)
217.- Weatherstripping
An energy efficiency measure that involves installing a material to seal air
leaks around components that open, close, and generally move (exterior
doors and windows).
2.- ΔP (Delta P)
The difference in measured air pressure between two areas
3.- ΔT (Delta T)
The difference in temperature between two areas
4.- Air Barrier
A material used for controlling air flow
,5.- ACH (Air Change per Hour)
How air exchange rate is typically expressed
ACH = CFM x 60 / volume
Example: A house is leaking at rate of 67 CFM. the volume of the house is
8,000 cubic feet (cu. ft)
ACH = 67 x ,000 =4,,000 = .5
6.- AFUE (Annual Fuel Utilization Efficiency)
A measure of how efficiently a furnace or boiler converts fuel to heat, on
average, over a typical year.
7.- Air change rate
The number of times the interior volume of air changes over one hour.
9.- Airflow
,The movement of air in the house
8- Air Sealing
The practice of installing appropriate materials to stop airflow in certain areas
of the house
10.- Algorithm
A formula that energy modeling software uses to estimate a house's energy
usage
11- Argon
An inert gas that can be placed between the panes in a multi-pane window to
further improve the window's thermal resistance.
12.- Atmospheric Vent
A type of heating system vent in which combustion by-products exhaust from
the house up through a chimney by stack effect due to the natural buoyancy
of hot gases.
, AD
13.- Attic
The indoor space under the roof at the top of a house.
14.- Average R-value
A way of determining the R-value of a space that has adjacent areas of
differing R-values (an attic floor with insulation everywhere except around the
hatch).
15.- Awning
An element that can be installed on the exterior of a house over doors and
windows to provide shading.
16.- B-vent
A vent made from double-wall metal.
17.- Balanced System
