BPI BA Study Set Questions and Answers
What % of air is oxygen? - Answer-21%
what is a Heating Degree Day? - Answer-each degree that the average daily temperature is
below the base temperature (65 degrees F) is one heating degree day. HDD
If the high was 60 degrees F and the low was 30 degrees ...
when air sealing a home you should always start where? - Answer✔✔-you always start at the
top to defeat the cause of stack effect. This lowers the Neutral Pressure Plane and avoids
negative pressures in the bottom of the building which could cause backdrafting of atmospheric
appliances.
define stack effect - Answer✔✔-draft established in a building from air infiltrating low and
exfiltrating high due to convection
what are four reasons to fix the hole around loose HVAC boots in the floor? - Answer✔✔-1. IAQ
(indoor air quality)
2. comfort
3. fire safety
4. Cost
name 3 forms of heat transfer - Answer✔✔-conduction, convection, radiation
what has more potential energy, propane or natural gas? - Answer✔✔-propane - 2.5 times more
energy density than natural gas
what does MSDS mean and how is it used? - Answer✔✔-Material Safety Data Sheet. It shows
mfg and product information including health and safety issues
what is the typical human comfort range in RH? - Answer✔✔-40-60%
define infiltration - Answer✔✔-uncontrolled flow of air into a building
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