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Article #130Re: Computers use 7W when SWITCHED OFF!
From: Bret
Date: Wed, 18 Mar 2009 18:49
Date: Wed, 18 Mar 2009 18:49
24 lines
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3094 bytes
On Wed, 18 Mar 2009 17:55:48 +0000, Tony Houghton wrote: > On Wed, 18 Mar 2009 16:40:52 -0000 > Conor <conor_turton@hotmail.com> wrote: > >> In article <20090318133610.034c43f4@realh.co.uk>, Tony Houghton says... >> >>> But more of the heat energy from the lightbulb will be wasted heating >>> the wrong place. >> >> Why? As heat rises, the top part of the room above human being level >> has to be heated up first and then the temperature gradually warms up >> lower down. > > But you tend to get a temperature gradient, so the air around the > lightbulb, which is already hot enough, gets a little bit hotter without > having much effect on the cooler air lower down that you really want to > heat. We don't live in hermetically sealed rooms with perfect > insulation, so heat is always escaping. Putting heat sources on the > ceiling or high up on a wall are the best places if you want the heat to > escape from the room before it gets a chance to dissipate evenly around > it. It's a "light bulb" not a heater.
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X-Google-Thread: 1063f0,458311f9b43cefc2 X-Google-Thread: 108c83,458311f9b43cefc2 X-Google-Thread: 106e5e,458311f9b43cefc2 X-Google-Attributes: gid1063f0,gid108c83,gid106e5e,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: arc1-ca.pugleaf.net!g2news1.google.com!news1.google.com!Xl.tags.giganews.com!border1.nntp.dca.giganews.com!nntp.giganews.com!local01.nntp.dca.giganews.com!nntp.orcon.net.nz!news.orcon.net.nz.POSTED!not-for-mail NNTP-Posting-Date: Wed, 18 Mar 2009 13:49:11 -0500 From: Bret <at@at.corn> Subject: Re: Computers use 7W when SWITCHED OFF! Newsgroups: uk.comp.homebuilt,aus.computers,nz.comp User-Agent: 40tude_Dialog/2.0.15.1 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit References: <c5dbc39e-e6ae-44e2-b87b-9063af737bab@x29g2000prf.googlegroups.com> <49bdec79$1$2602$afc38c87@news.optusnet.com.au> <gpkqgn$k2g$1@lust.ihug.co.nz> <gpl4ab$tmu$3@news.albasani.net> <49be195a$0$16175$db0fefd9@news.zen.co.uk> <726r49Fmvj23U1@mid.individual.net> <01cea21f$0$20670$c3e8da3@news.astraweb.com> <729mngFouc3lU1@mid.individual.net> <01d0156f$0$20621$c3e8da3@news.astraweb.com> <72aqtlFohaaqU4@mid.individual.net> <hlc1s49qeohuqtkarmao3qhp5h8jb77nir@4ax.com> <20090318133610.034c43f4@realh.co.uk> <72cmgoFp6283U1@mid.individual.net> <20090318175548.66ab588f@realh.co.uk> Date: Thu, 19 Mar 2009 06:49:15 +1200 Message-ID: <yvrru9h127vx.ojubm8q4mbzq.dlg@40tude.net> X-Original-NNTP-Posting-Host: 60.234.210.196 X-Original-Trace: 19 Mar 2009 07:57:54 +1300, 60.234.210.196 Lines: 24 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-Ud3Vt7iZqS9cVyV0XqtlcsIpEF/DCTbYC3jGKG4Zg0B9sOXt24PZBd5QQEkCNDqE/crwOvEtbnsGJlh!cD5smR1a1k99nxiTz/lfPRBW3ZNxqKrWJHmY0o2QL0O35cwDeF4fgLCL9DPm7QFAnuoeZAM+R4ks!Xhh29w== X-Complaints-To: abuse@orcon.net.nz X-DMCA-Complaints-To: abuse@orcon.net.nz X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.39