BPI Building Science Principles Concepts

2 factors required for calculating heating load. - 1. delta T between inside and outside 2. rate at which the house loses heat 2 simple ways to reduce baseload. - 1. Energy-efficient lighting, appliances, and electronics. 2. Water-saving measures such as low-flow showerheads and faucet aerators. 2 types of energy-efficient water heaters - 1. tankless water heater 2. heat pump water heater 2 types of spray polyurethane foam (SPF) - closed-cell (high density) and open-cell (low density) 3 exterior sources of IAQ pollutants - 1. pollen 2. smoke 3. air pollution 3 factors that affect fiberglass batt performance - 1. gaps and voids 2. compression 3. poor contact with surfaces 3 main numbers on a NFRC window label (National Fenestration Rating Council) - 1. Ufactor 2. Solar heat gain coefficient (SHGC) 3. Visible transmittance (VT) 3 signs of excess moisture in a home - 1. standing water in basement. 2. condensation on windows and other surfaces. 3. mold and mildew 3 statements about energy from the 1st law of thermodynamics - 1. energy moves from place to place 2. energy changes from one form to another 3. energy cannot be created or destroyed 3 things required for combustion - 1. air (oxygen) 2. fuel 3. heat (ignition source)