BPI Test - Building Analyst Exam | Questions & Answers (100 %Score) Latest Updated
2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions
Energy and matter move - from high concentrations to low concentrations.
Hot moves to - cold.
High pressure moves to - low pressure.
Wet moves to - dry.
Energy - The ability to bring about change or to do work.
BTU - Amount of heat required to change 1 lb of water 1 degree F.
1 gallon #2 fuel oil - 139,000 BTU
1 therm of natural gas - 100,000 BTU
1 kW of electricity - 3,412 BTU
Bimetal - Uses different rates of expansion/contraction of 2 different metals fused
together.
🔺T - Difference in temperature from one place to another.
Conduction - Heat flow from molecule to molecule in a solid.
Convection - Heat flow by movement of fluids (liquids and gasses).
Radiation - Heat flow across an empty space.
Thermal Bridging - Rapid flow of heat, by conduction, through a highly conductive
material in a building assembly.
R - Resistance to heat flow.
U - 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 - q = U • A • 🔺T
, U - Amount of heat a material or assembly allows to flow.
Solar gains depend on - home's compass orientation.
Most energy efficient orientation is - East-West of the long wall.
Heating Load - Amount of heat a heating system must produce to make up for heat
loss.
Cooling Load - Amount of heat that must be removed from a home to compensate for
heat gain.
All you need for air to flow is - 1. A pressure difference.
2. A pathway for flow.
1 inch of water column - Pressure differential required to raise a column of water 1".
249 Pascals - 1 inch of water column
Strength of the crack effect is a function of - 1. Height of stack
2. Temperature difference between top and bottom of stack.
Supply Leak - When more air is leaking from the supply side of the HVAC system, the
house becomes depressurized. ("Supply leaks suck")
Return Leak - When more air is leaking from the return side of the HVAC, the house
becomes pressurized.
Sling Psychrometer - 2 thermometers side by side, one with a wetted wick around the
bulb and one with a dry bulb.
Digital Relative Humidity Gauge - Read wet bulb temperature, dry bulb temperature,
and relative humidity.
Building code requires a vented attic to have - 1 sq ft of ventilation area for every 300 sq
ft of attic floor area.
Payback - Improvement Cost / Annual savings
SIR - Lifetime savings / improvement cost
Ventilation Fan Flow Process - 1. Connect hose from INPUT tap to Fan Flow Box.
2. Set DG-700 manometer to PR/FL.
3. Select EXH with the DEVICE button.
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