air watt

air watt
   an engineering unit used to express the effective cleaning power of a vacuum cleaner or central vacuum system. The air watt is practically the same as the ordinary watt. Measurements of vacuum power, however, are computed from English units using the following formula established by the American Society for Testing and Materials (ASTM): power in air watts equals 0.117354·F·S, or very nearly F·S/8.5, where F is the air flow in the system in cubic feet per minute (CFM) and S is the suction pressure in inches of water column (in WC).
   This definition makes the air watt equal to 0.9983 watt.

Dictionary of units of measurement. 2015.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • Air suspension — is a type of vehicle suspension powered by an engine driven or electric air pump or compressor. This pump pressurizes the air, using compressed air as a spring. Air suspension replaces conventional steel springs. If the engine is left off for an… …   Wikipedia

  • Air Florida Flight 90 — Salvage operations on January 19, 1982 Accident summary Date January 13, 1982 Type …   Wikipedia

  • Watt, James — born Jan. 19, 1736, Greenock, Renfrewshire, Scot. died Aug. 25, 1819, Heathfield Hall, near Birmingham, Warwick, Eng. Scottish engineer and inventor. Though largely self taught, he began work early as an instrument maker and later as an engineer… …   Universalium

  • 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 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

  • Watt par mètre-kelvin — Conductivité thermique La conductivité thermique est une grandeur physique caractérisant le comportement des matériaux lors du transfert thermique par conduction. Cette constante apparaît par exemple dans la loi de Fourier (voir l’article… …   Wikipédia en Français

  • Air-Conditioner — Dezentrale Klimaanlagen (Außenmodule von Splitgeräten) in Hongkong, 2002 Eine Klimaanlage ist eine Anlage zur Erzeugung und Aufrechterhaltung eines gleichmäßigen Raumklimas. Der Begriff Klimaanlage wird in Deutschland in dem Sinne verwendet, dass …   Deutsch Wikipedia

  • Oswald Watt — Walter Oswald Watt Oswald Watt, Australian Flying Corps Nickname Toby …   Wikipedia

  • Robert Watson-Watt — Infobox Scientist name = Robert Watson Watt box width = image width =250px caption = birth date = 13 April 1892 birth place = Brechin in Angus, Scotland death date = 5 December 1973 death place = Inverness residence = citizenship = nationality =… …   Wikipedia

  • Robert Watson-Watt — Pour les articles homonymes, voir Watson et Watt. Robert Watson Watt Naissance 13  …   Wikipédia en Français

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”