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BPI Test with correct Answers
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BPI Test with correct Answers
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BPI Test with correct AnswersEnergy and matter move - Correct Answers -from high concentrations to low
concentrations.
Hot moves to - Correct Answers -cold.
High pressure moves to - Correct Answers -low pressure.
Wet moves to - Correct Answers -dry.
Energy - Correct Answers -The ability to bring about change or to do work.
BTU - Correct Answers -Amount of heat required to change 1 lb of water 1 degree F.
1 gallon #2 fuel oil - Correct Answers -139,000 BTU
1 therm of natural gas - Correct Answers -100,000 BTU
1 kW of electricity - Correct Answers -3,412 BTU
Bimetal - Correct Answers -Uses different rates of expansion/contraction of 2 different
metals fused together.
🔺T - Correct Answers -Difference in temperature from one place to another.
Conduction - Correct Answers -Heat flow from molecule to molecule in a solid.
Convection - Correct Answers -Heat flow by movement of fluids (liquids and gasses).
Radiation - Correct Answers -Heat flow across an empty space.
Thermal Bridging - Correct Answers -Rapid flow of heat, by conduction, through a highly
conductive material in a building assembly.
R - Correct Answers -Resistance to heat flow.
, U - Correct Answers -Amount of heat (in BTU's) that transmits through 1 sq ft of
material, or building assembly, in 1 hour when there is a 1 degree temperature
difference between the 2 sides.
Heat Transmission Formula - Correct Answers -q = U • A • 🔺T
U - Correct Answers -Amount of heat a material or assembly allows to flow.
Solar gains depend on - Correct Answers -home's compass orientation.
Most energy efficient orientation is - Correct Answers -East-West of the long wall.
Heating Load - Correct Answers -Amount of heat a heating system must produce to
make up for heat loss.
Cooling Load - Correct Answers -Amount of heat that must be removed from a home to
compensate for heat gain.
All you need for air to flow is - Correct Answers -1. A pressure difference.
2. A pathway for flow.
1 inch of water column - Correct Answers -Pressure differential required to raise a
column of water 1".
249 Pascals - Correct Answers -1 inch of water column
Strength of the crack effect is a function of - Correct Answers -1. Height of stack
2. Temperature difference between top and bottom of stack.
Supply Leak - Correct Answers -When more air is leaking from the supply side of the
HVAC system, the house becomes depressurized. ("Supply leaks suck")
Return Leak - Correct Answers -When more air is leaking from the return side of the
HVAC, the house becomes pressurized.
Sling Psychrometer - Correct Answers -2 thermometers side by side, one with a wetted
wick around the bulb and one with a dry bulb.
Digital Relative Humidity Gauge - Correct Answers -Read wet bulb temperature, dry
bulb temperature, and relative humidity.
Building code requires a vented attic to have - Correct Answers -1 sq ft of ventilation
area for every 300 sq ft of attic floor area.
Payback - Correct Answers -Improvement Cost / Annual savings
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