Airwatt or air watt is a unit of measurement that represents the true suction power of vacuum cleaners. It is calculated by multiplying the airflow (in cubic metres per second) by the suction pressure (in pascals). This measurement reflects the energy per unit time of the air flowing through the vacuum cleaner's opening, which relates to the electrical power (wattage) consumed by its electrical motor but is always smaller (due to unavoidable losses).
Airwatt or air watt is a unit of measurement that represents the true suction power of vacuum cleaners. It is calculated by multiplying the airflow (in cubic metres per second) by the suction pressure (in pascals). This measurement reflects the energy per unit time of the air flowing through the vacuum cleaner's opening, which relates to the electrical power (wattage) consumed by its electrical motor but is always smaller (due to unavoidable losses).
The airwatt is a valuable measurement of vacuum cleaner potential to do useful work, because it directly represents the power that is expelled by the air flow (in the case of a typical household vacuum cleaner). The power of the airflow is equal to the product of pressure and volumetric flow rate. Unlike electrical power consumed by its electric motor (measured in watts), which includes not only power of the air flow but also energy lost due to inefficiencies and unavoidable losses, the airwatt directly reflects the actual airflow and its suction power. Therefore, two vacuum cleaners with the same airwattage will have essentially the same suction power (not to be confused with either suction force or air pressure), whereas devices with the same electrical wattage might vary significantly in efficiency, resulting in different airwattage levels.
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