nanog mailing list archives

Re: WSJ: Big tech firms seeking power


From: Alex Rubenstein <alex () nac net>
Date: Fri, 16 Jun 2006 21:17:52 -0400 (Eastern Daylight Time)




On Fri, 16 Jun 2006, Crist Clark wrote:

Error: you MULTIPLY 3.413 to go from watts to BTU, not divide. It's be more like 154,000,000 BTU, /12000 or 12,798 tons.

Well, the bigger problem here is that a watt is a measure of
power (engergy/time) and a BTU is a unit of energy. There is no
dimensionless conversion factor between the two.

Huh?

A Watt has no time constant. A watt is an amount of energy consumed at a moment (ie, a 60 watt light bulb), not an amount of energy over time (like a watt-hour; for instance, a 60 watt light bulb uses 60 watt-hours of power every hour, or 1.44 kwatt-hrs per day).

There is a direct correlation between watts and btu's, and that is:

        watts * 3.413 = btu





--
Alex Rubenstein, AR97, K2AHR, alex () nac net, latency, Al Reuben
Net Access Corporation, 800-NET-ME-36, http://www.nac.net



Current thread: