A quad is a very large unit of energy equivalent to one quadrillion British Thermal Units (1,000,000,000,000,000 BTU's). In more practical terms, it is enough to serve all annual energy needs for about 3,000,000 Americans. Many medium-sized states like Colorado and Arizona consume a total of one quad of energy per year -- roughly one-tenth the annual energy consumption in Texas. It is noted that the international and scientific communities would usually quote such numbers in units of exajoules (EJ, or 1 x 1018 Joules). Fortunately, the two units are almost equivalent (1 quad=1.055 EJ).
See http://www.vera.com/PSDocs/PSOverview.html. Also, start using Google more. Bill Potts, CMS Roseville, CA http://metric1.org [SI Navigator] >-----Original Message----- >From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On >Behalf Of John Nichols >Sent: Saturday, January 18, 2003 14:12 >To: U.S. Metric Association >Subject: [USMA:24493] Quad > > >74.5 quads or 12.5 billion barrels of oil equivalent (bbls). > >Any ideas what a quad is? > >John Nichols BE, Ph.D. (Newcastle), MIE (Aust), Chartered Professional >Engineer >Assistant Professor >Texas A&M University >Department of Construction Science >Langford AC >Rm: A414 MD 3137 >College Station, TX 77843-3137 > >Electronic mail: [EMAIL PROTECTED] >Telephone: 979 845 6541 >Facsimile: 979 862 1572 >----------------------------------------------------------------- >a fronte praecipitium a tergo lupi > >in front a precipice, behind a wolf >----------------------------------------------------------------- >
