ARE 5.0 - PPD - MECHANICAL SYSTEMS Exam with 100% Correct | Latest Updated Graded A+

Net Zero Structure - A building that consumes only as much energy as it produces on site through renewable means Selection of Fuel Type - Depends on Fuel's availability in the region and the dependability of supply; the fuel's cost, cleanliness and convenience of storage; and the needs of the building's equipment Natural Gas - Of all the fossil fuels it is the most efficient - it is clean burning and relatively low in cost It's heat value is 10,050 Btu/gal Flammable gas, consisting largely of methane and other hydrocarbons, occurring naturally underground (often in association with petroleum) and used as fuel. Propane - A type of gas that can be used where natural gas is not available. It's heat value is 21,560 Btu/gal It is delivered and stored in pressurized tanks.