BPI Building Analyst Training Terminology and Definitions Exam | Questions & Answers
(100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers |
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ACCA - Air conditioning contractor association
ACH - Air changes per hour
AFUE - Annual Fuel Utilization Efficiency averaged over a heating season. ( Does not
include distibution losses)
Air Barrier - the barrier that prevents infiltration of outdoor air into the conditioned
spance and exfiiltration of indoor air to thhe outside. Also known as "Pressure boudary".
( It should be continuous and aligned with the thermal boundary)
Air Changes at 50 Pascals (ACH50) - The number of times the volume of air is
exchanged when a blower door depressurizes the home
Air Exchange - The total building air exchanged with the outdooes through air leakage
and ventilation
Air Handler - A vlower with cooling and/or heating coils connected to ducts,housed in a
steel cabinet
Audit - A process used to identify energy savings oppurtunutues in buildings
Air sealing - The process of sealing bypasses in the pressure boundary to prevent air
leakage. This reduces heat flow from air movement and prevents water vapor from
entering the building cavities
Asbestos - Heat resistant material used previously in many building products;
represents serious health hazarf as an airborne particulate
ASHRAE - .American Society of Heating,Refrigeration, and Air Conditioning Engineers.
(Professional societ of researchers and scientist that set standards for
heating,refrigeration, and ventilation
Atmospheric Venting System - a standard chimnet or B type vent that is intended to
remove combusion byproducts. The pressure inside vent should be negative with
reference to (WRT) the room that houses the the appliance
Attic Bypass - an air passway between the living space and the attic
Attic Ventilation - ventilation intended to remove heat and moisture from attic areas to
the outside
, Backdraft - prolionged or continuous spillage of combustion byproducts into the home
Balanced Mechanical Ventilation System - a mechanical ventiliation system with inlets
and oulets that does not induce pressure differences while operating the home
Balance Heat Recovery Ventilator - a balanced mechanical ventilation system with
incoming and outgoing air that recovers heat from one air steam to the other without
mixing the iar streams
Balloon Framing - a construction method where the walls are framed before the floor is
built, and the wall cavity is often open to both the attic and the basement
Band Joist - the perimeter of the floor assembly that is between the first and second
floors of the structure
Barometric Damper - a damper actuated by ar pressure differentials
Base Pressure - is the natural pressure difference between the zone being tested and
the outside(without any exhaust appliances running and with the house in "winter
condition")
Baseload - the amounf of energy (electric and combustion fuel) used to operate year-
roud lighting and appliances
Blower Door - a diagnostic tool used to test for house leakage consisting of a fan, a
removeable panel, and gauges
Bottom Plate - the bottom horizontal wall framing component
BPi - Building Performance Institute
Btu-British Thermal Unit - The amoung of energy needed to heat one pound of water
one degree Farenheit
Btu Content of Common Fuels; #2 Fuel oil- 139,000 Btus/gal, Electric-3414
Btus/KWh,Liquid Propane- 92000 Btus/gal,Natural Gas- 1000000 Btus/therm,1000
Btus/cu ft,Wood-15-20 million Btus/cord
Building Airflow Atandard-BAS - the caculated minimum airflow required for a building
and the occupants. Mechanical ventiliation is required if the measured CFM50 is less
than 70% of the BAS
Building Cavities - (also referred to as interstitial spaces)- Spaces inside walls,floors,
and ceilings between the interior and exterior sheathing
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