| A | B |
|---|
| Absolute Humidity | Is the amount of humidity in the air, indicated by grains |
| Absolute Pressure | is the sum of gauge and atmospheric pressure (psia). |
| Absolute Temperature | Is temperature measured on the Kelvin scale |
| Absolute Zero | The lowest temperature theoretically attainable on the Kelvin scale . Approximately -273.16o C |
| Absolute humidity | The humidity of the air measured buy the number of grains of water vapor present in one cubic meter of air. |
| Absorbent | A substance with the ability to absorb another substance |
| Absorption | in physics, the taking up of light, heat, or other energy by molecules. The absorbed energy is converted into heat; Absorption in chemistry is the taking up of one substance by another. For example, a gas such as oxygen may be absorbed, or dissolved, in water. In the HVAC industry we absorbed heat energy from the medium being cooled and transfer that energy in the refrigerant |
| Active Cooling | Compressor driven air-conditioning |
| Accumulator | A shell device installed in the suction line of a HVAC system to prevent liquids from entering the compressor. |
