Air preheater — An air preheater or air heater is a general term to describe any device designed to heat air before another process (for example, combustion in a boiler) with the primary objective of increasing the thermal efficiency of the process. They may be… … Wikipedia
Air well (condenser) — High mass air well of Belgian engineer Achile Knapen in Trans en Provence … Wikipedia
Air conditioner — For general aspects of air conditioning, see Air conditioning. A typical home air conditioning unit. An air conditioner (often referred to as AC) is a home appliance, system, or mechanism designed to dehumidify and extract heat from an area. The… … Wikipedia
Air conditioning — The term air conditioning refers to the cooling and dehumidification of indoor air for thermal comfort. In a broader sense, the term can refer to any form of cooling, heating, ventilation or disinfection that modifies the condition of air.… … Wikipedia
Air cycle machine — An air cycle machine (ACM) is the refrigeration unit of the environmental control system used in pressurized turbine powered aircraft. Normally an aircraft has two to three of these machines arranged in a system called a pack . The cooling… … Wikipedia
air-dry loss — n in coal, the loss in mass, expressed as a percentage, resulting from each air drying stage or the sum of all sequential air drying stages in which the results from each stage are adjusted to the as received basis. DISCUSSION Air dry loss is… … Coke&Coal Terminology
Useful conversions and formulas for air dispersion modeling — Various governmental agencies involved with environmental protection and with occupational safety and health have promulgated regulations limiting the allowable concentrations of gaseous pollutants in the ambient air or in emissions to the… … Wikipedia
Hot air balloon — This article is about hot air balloons themselves. For the associated activity, see hot air ballooning. For the rock opera, see Hot Air Balloon (rock opera). For the song, see Hot Air Balloon (song). Hot air balloon in flight … Wikipedia
Indoor air quality — (IAQ) is a term referring to the air quality within and around buildings and structures, especially as it relates to the health and comfort of building occupants. IAQ can be affected by microbial contaminants (mold, bacteria), gases (including… … Wikipedia
Solar air conditioning — refers to any air conditioning (cooling) system that uses solar power. This can be done through passive solar, photovoltaic conversion (sun to electricity), or solar thermal energy conversion. The U.S. Energy Independence and Security Act of… … Wikipedia