with 100% Solutions/Verified Answers
How many windows are needed? - ANSWER South - 7 %
West - 2 %
East - 4 %
North - 4%
Lumen - ANSWER One foot candle falling on one sq ft of area.
Efficacy - ANSWER Light output-per-power input measured in lumens per watt. It is calculated
by dividing light output measured in lumens by electric input in watts. Incandescent is the least
efficient; low pressure sodium is the most efficient.
Refrigerator settings savings - ANSWER Hot climate
- fresh food from 36.4 to 43.9
- freezer food from 9.1 to 12.4
Saves 200 kWh/yr
New Showers - ANSWER 1.75 gpm saving 44% or 12.75 gallons a day
Flow Optimized Aereators - ANSWER 1.5 gpm saving 47% or 11.4 gallons a day
Simple Payback - ANSWER The most basic metric, and is the cost divided by the annual savings
in dollars.
Payback - ANSWER Cost / Savings
, Always deal with moisture at - ANSWER the source.
Most effective way to deal with moisture - ANSWER Source Control
Thermal Comfort - ANSWER State of mind that expressed satisfaction with the
surrounding environment.
Thermal Comfort Factors - ANSWER 1. Air Temperature
2. Radiant Temperature
3. Air Velocity
4. Humidity
5. Clothing
6. Body Metabolism
EPA suggested maximum 8 he exposure to CO - ANSWER 9 ppm
CO is caused by - ANSWER incomplete combustion.
Blue Flame - ANSWER Complete Combustion
Key to a building performing efficiently is - ANSWER alignment of the thermal and
pressure barriers.
House-as-system - ANSWER Interactions between all of the components of a home and their
relationships to heat loss, heat gain, and comfort.
Diagnostic Audits - ANSWER Include a blower door, infrared scans, duct blasters, and any other
applicable evaluation tools. Some include building modeling software.