1st Law of energy is neither created nor destroyed
Thermodynamics
Above what air-free 400ppm
CO level must system
serving be required for
central furnaces as part
of the work scope
ACCA Manual J find peak heating and cooling load on a room-
calculations by-room basis
According to NFPA 3" and 6"
requirements for gas-
fired appliances, the
minimum clearance
from a B-vent and
chimney to
combustible materials
are
According to the 2009 1 square foot of free opening per 150 square
IRC, attic ventilation in feet or attic floor area
a house without a
ceiling vapor barrier
must be
Air temperature, air Human comfort
movement, relative
humidity, and mean
radiant temperature
collectively affect:
,The area of a triangle (base x height)/ 2
can be calculated
using the equation
Asbestos can be found Floor Tiles, Pipe insulation, and siding
in
Assuming a reference 42
temperature of 65F ,
what's the HDD for Feb
7th, when the average
temperature was 23F
As the temperature of Decreases
sample air rises, the
relative humidity
A blower door tests Seal the holes to prevent moisture in the attic
shows that a building is and evaluate the need for mechanical ventilation
at 0.25 ACH. You find
large openings in the
top pates visible in the
attic. You should
A blue flame indicates Complete combustion is occurring
BPI ventilation ASHRAE
requirements are based
on standards published
by
A BTU is the amount of one pound of water one degree F
energy needed to raise
Condensation occurs Warm/humid air contacts a cold surface
when
, The correct slope for a +1/4 inch per foot
flue pipe is
Depending on 35-50%
conditions with
dwelling what's an
acceptable range for
relative humidity
inside?
Does blower door test No
determine the primary
driving force of
infiltration
Doubling the thickness Appx doubles thermal resistance, as long as it is
of an insulating not compressed or compromised
material
The driving force of Temperature
conductive and radiant
heat transfer is
A dryer must always be Outdoors
vented where?
Improves comfort reduces energy use, and may
Duct sealing
resolve CAZ depressurization problems