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Re: ARM embedded stuff

From Brian Bailey <bbailey@argonet.co.uk>
Subject Re: ARM embedded stuff
Newsgroups comp.sys.acorn.misc
Date 2012-02-13 14:43 +0000
Message-ID <5260ea8b09bbailey@argonet.co.uk> (permalink)
References (6 earlier) <76db775e52.Matthew@sinenomine.freeserve.co.uk> <525e79890edave@triffid.co.uk> <dd923cab-831c-428a-9f74-16ccc14664a1@db5g2000vbb.googlegroups.com> <ant1312287a1pErr@client.cjemicros.co.uk> <5260e5d638dave@davenoise.co.uk>
Organization None

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In article <5260e5d638dave@davenoise.co.uk>,
   Dave Plowman (News) <dave@davenoise.co.uk> wrote:
> In article <ant1312287a1pErr@client.cjemicros.co.uk>,
>    Chris Evans <chris@cjemicros.co.uk> wrote:
> > > Why on earth are people using electricity to heat homes? Madness!
> > > Converting a fuel to heat to spin turbines to generate electricity
> > > to send over a lossy transmission network to convert back to heat
> > > again. Madness! Space heating should use gas. One single conversion
> > > point.

> > I've often wondered which is overall more efficient.

> > The Power Station Fuel to heat should be a lot more efficient than a
> > domestic boiler,

Not really. Depending on the thermodynamic cycle employed the overall
efficiency is unlikely to exceed about 45%. Then there are the
transmission losses to be added. I'm rather forgetful of what was the
typical cycle efficiency with coal fired stations, with high temperature,
high pressure steam installations, 36-38% springs to mind. However, with
mixed cycles, so called topping cycles - gas turbine generators with
exhaust gases raising steam in boilers for use in steam turbo generators -
I think 48% is about the maximum efficiency that can be expected. But I'm
very much out of touch these days. There's been some very fancy
thermodynamic cycles that have been invented over the years. The *mercury*
cycle was one that always intrigued me - actually used used in Germany and
the USA - very high efficiency, about 45%, I think, in the 1930's. The
super-critical steam cycle keeps being re-cycled (pun intended), but very
expensive, exotic, stainless steels are necessary.

> I'm not so sure. A decent condensing domestic boiler is very efficient -
> over 90%.

Well *all* the energy is converted into useable heat with very little in
the way of losses. I think that 98% is possible because they are
condensing boilers.

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ARM embedded stuff davehigton <davehigton14@googlemail.com> - 2012-02-03 01:19 -0800
  Re: ARM embedded stuff Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2012-02-04 22:05 -0800
  Re: ARM embedded stuff Dave Higton <davehigton@dsl.pipex.com> - 2012-02-07 20:03 +0000
    Re: ARM embedded stuff Fred Bambrough <fred@[127.0.0.1]> - 2012-02-07 20:22 +0000
      Re: ARM embedded stuff Folderol <folderol@ukfsn.org> - 2012-02-07 21:01 +0000
      Re: ARM embedded stuff Graham Pickles <graham@durain.demon.co.uk> - 2012-02-08 10:41 +0000
        Re: ARM embedded stuff Russell Hafter News <see.sig@walkingingermany.invalid> - 2012-02-08 11:01 +0000
          Re: ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-08 14:01 +0000
            Re: ARM embedded stuff Folderol <folderol@ukfsn.org> - 2012-02-08 14:43 +0000
            Re: ARM embedded stuff Matthew Phillips <spam2011m@yahoo.co.uk> - 2012-02-08 20:38 +0000
              Re: ARM embedded stuff Dave Symes <dave@triffid.co.uk> - 2012-02-08 20:56 +0000
                Re: ARM embedded stuff "John Williams (News)" <UCEbin@tiscali.co.uk> - 2012-02-08 22:03 +0100
                Re: ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-08 21:49 +0000
                Re: ARM embedded stuff Dave Symes <dave@triffid.co.uk> - 2012-02-09 06:49 +0000
                Re: ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-09 10:04 +0000
                Re: ARM embedded stuff Barry Gray <barrygray@blueyonder.co.uk> - 2012-02-10 11:35 +0000
                Re: ARM embedded stuff Bob Seago <rjseago@gmail.com> - 2012-02-09 17:45 +0000
                Re: ARM embedded stuff jgharston <jgh@arcade.demon.co.uk> - 2012-02-12 14:58 -0800
                Re: ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-13 09:53 +0000
                Re: ARM embedded stuff "David Holden" <SpamBin@apdl.co.uk> - 2012-02-13 10:28 +0000
                Re: ARM embedded stuff jgharston <jgh@arcade.demon.co.uk> - 2012-02-13 12:10 -0800
                Re: ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-13 22:34 +0100
                Re: ARM embedded stuff Russell Hafter News <see.sig@walkingingermany.invalid> - 2012-02-13 21:52 +0000
                Re: ARM embedded stuff JTM <usenetbin@free.fr> - 2012-02-14 11:24 +0000
                Re: ARM embedded stuff jgharston <jgh@arcade.demon.co.uk> - 2012-02-16 09:15 -0800
                Re: ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-17 01:38 +0100
                Re: ARM embedded stuff Brian Jordan <brian.jordan9@btinternet.com> - 2012-02-17 00:53 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-17 06:45 +0000
                Re: ARM embedded stuff charles <charles@charleshope.demon.co.uk> - 2012-02-17 08:05 +0000
                Re: ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-17 12:28 +0000
                Re: ARM embedded stuff Brian Jordan <brian.jordan9@btinternet.com> - 2012-02-17 13:47 +0000
                Re: ARM embedded stuff Brian Jordan <brian.jordan9@btinternet.com> - 2012-02-17 15:48 +0000
                Re: ARM embedded stuff Russell Hafter News <see.sig@walkingingermany.invalid> - 2012-02-17 08:54 +0000
                Re: ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-17 12:48 +0000
                Re: ARM embedded stuff Tim Hill <tim@invalid.org.uk> - 2012-02-19 13:48 +0000
                Re: ARM embedded stuff Dave Symes <dave@triffid.co.uk> - 2012-02-14 07:14 +0000
                Electric heating: was ARM embedded stuff Barry Gray <barrygray@blueyonder.co.uk> - 2012-02-15 20:54 +0000
                Re: Electric heating: was ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-15 23:37 +0000
                Re: Electric heating: was ARM embedded stuff Barry Gray <barrygray@blueyonder.co.uk> - 2012-02-16 11:02 +0000
                Re: Electric heating: was ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-16 11:25 +0000
                Re: Electric heating: was ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-17 01:10 +0100
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-17 00:47 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-17 11:04 +0000
                Re: Electric heating: was ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-18 00:00 +0100
                Re: Electric heating: was ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-17 12:11 +0000
                Re: Electric heating: was ARM embedded stuff Bryn Evans <d@a.invalid> - 2012-02-17 16:38 +0000
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-17 17:06 +0000
                Re: Electric heating: was ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-17 19:04 +0000
                Re: Electric heating: was ARM embedded stuff Barry Gray <barrygray@blueyonder.co.uk> - 2012-02-17 14:17 +0000
                Re: Electric heating: was ARM embedded stuff Theo Markettos <theom+news@chiark.greenend.org.uk> - 2012-02-18 04:11 +0000
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-18 09:09 +0000
                Re: Electric heating: was ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-18 10:21 +0000
                Re: Electric heating: was ARM embedded stuff workstuff@mail.com - 2012-02-18 14:11 +0100
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-18 16:03 +0000
                Re: Electric heating: was ARM embedded stuff NedA <news@ned.uk.invalid> - 2012-02-18 17:28 +0000
                Re: Electric heating: was ARM embedded stuff Barry Gray <barrygray@blueyonder.co.uk> - 2012-02-19 15:09 +0000
                Re: Electric heating: was ARM embedded stuff Tim Hill <tim@invalid.org.uk> - 2012-02-26 23:35 +0000
                Re: Electric heating: was ARM embedded stuff Barry Gray <barrygray@blueyonder.co.uk> - 2012-02-27 23:07 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-27 23:44 +0000
                Re: Electric heating: was ARM embedded stuff charles <charles@charleshope.demon.co.uk> - 2012-02-27 23:46 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-27 23:54 +0000
                Re: Electric heating: was ARM embedded stuff charles <charles@charleshope.demon.co.uk> - 2012-02-28 08:18 +0000
                Re: Electric heating: was ARM embedded stuff Jeremy Nicoll - news posts <jn.nntp.scrap007@wingsandbeaks.org.uk> - 2012-02-28 02:11 +0000
                Re: Electric heating: was ARM embedded stuff "David Holden" <SpamBin@apdl.co.uk> - 2012-02-28 07:25 +0000
                Re: Electric heating: was ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-28 09:34 +0000
                Re: Electric heating: was ARM embedded stuff Tim Hill <tim@invalid.org.uk> - 2012-02-28 11:59 +0000
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-28 09:15 +0000
                Re: Electric heating: was ARM embedded stuff cferris@freeRemoveuk.com.invalid - 2012-02-28 09:38 +0000
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-28 10:38 +0000
                Re: Electric heating: was ARM embedded stuff cferris@freeRemoveuk.com.invalid - 2012-02-28 11:05 +0000
                Re: Electric heating: was ARM embedded stuff charles <charles@charleshope.demon.co.uk> - 2012-02-28 11:14 +0000
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-28 12:07 +0000
                Re: Electric heating: was ARM embedded stuff Chris Shepheard <chris.shepheard@chrispics.co.uk> - 2012-02-28 19:33 +0000
                Re: Electric heating: was ARM embedded stuff Peter Young <pnyoung@ormail.co.uk> - 2012-02-28 20:13 +0000
                Re: Electric heating: was ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-29 05:44 +0100
                Re: Electric heating: was ARM embedded stuff ff <ff@mdharding.org.uk> - 2012-02-29 10:41 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-29 11:37 +0000
                Re: Electric heating: was ARM embedded stuff Dave Higton <davehigton@dsl.pipex.com> - 2012-02-29 22:24 +0000
                Re: Electric heating: was ARM embedded stuff SG nws <nwsgrp@ntlworld.com> - 2012-03-01 02:12 +0000
                Re: Electric heating: was ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-03-01 04:14 +0100
                Re: Electric heating: was ARM embedded stuff Jess <phantasm_39@hotmail.com> - 2012-03-08 14:34 +0000
                Re: Electric heating: was ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-03-01 03:31 +0100
                Re: Electric heating: was ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-03-01 05:04 +0100
                Re: Electric heating: was ARM embedded stuff NedA <news@ned.uk.invalid> - 2012-03-01 08:43 +0000
                Re: Electric heating: was ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-03-01 03:31 +0100
                Re: Electric heating: was ARM embedded stuff Barry Gray <barrygray@blueyonder.co.uk> - 2012-02-28 11:44 +0000
                Re: Electric heating: was ARM embedded stuff SG nws <nwsgrp@ntlworld.com> - 2012-02-28 18:53 +0000
                Re: Electric heating: was ARM embedded stuff Barry Gray <barrygray@blueyonder.co.uk> - 2012-02-28 12:09 +0000
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-28 13:11 +0000
                Re: Electric heating: was ARM embedded stuff charles <charles@charleshope.demon.co.uk> - 2012-02-28 14:02 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-28 15:19 +0000
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-28 16:39 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-28 18:08 +0000
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-28 22:02 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-28 22:58 +0000
                Re: Electric heating: was ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-28 15:06 +0000
                Re: Electric heating: was ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-28 16:15 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-28 18:45 +0000
                Re: Electric heating: was ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-28 20:19 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-28 21:36 +0000
                Re: Electric heating: was ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-29 01:25 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-29 11:18 +0000
                Re: Electric heating: was ARM embedded stuff "David Holden" <SpamBin@apdl.co.uk> - 2012-02-28 20:26 +0000
                Re: Electric heating: was ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-28 21:40 +0000
                Re: Electric heating: was ARM embedded stuff Barry Gray <barrygray@blueyonder.co.uk> - 2012-02-28 15:20 +0000
                Re: ARM embedded stuff Chris Evans <chris@cjemicros.co.uk> - 2012-02-13 12:16 +0000
                Re: ARM embedded stuff "David Holden" <SpamBin@apdl.co.uk> - 2012-02-13 12:42 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-13 13:52 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-13 14:43 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-13 15:26 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-13 17:43 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-13 18:56 +0000
                Re: ARM embedded stuff jgharston <jgh@arcade.demon.co.uk> - 2012-02-13 12:14 -0800
                Re: ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-13 22:49 +0100
                Re: ARM embedded stuff Folderol <folderol@ukfsn.org> - 2012-02-14 01:01 +0000
                Re: ARM embedded stuff jgharston <jgh@arcade.demon.co.uk> - 2012-02-16 09:21 -0800
                Re: ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-17 01:25 +0100
            Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-10 12:54 +0000
              Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-12 07:00 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-12 10:43 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-12 12:11 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-12 13:37 +0000
                Re: ARM embedded stuff Russell Hafter News <see.sig@walkingingermany.invalid> - 2012-02-12 14:59 +0000
                Re: ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-12 15:27 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-12 15:54 +0000
                Re: ARM embedded stuff Philip Draper <Philip@borehamh.demon.co.uk> - 2012-02-12 15:18 +0000
                Re: ARM embedded stuff OT T M Smith <thomas.smith57@ntlworld.com> - 2012-02-12 17:45 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-12 15:11 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-12 15:47 +0000
                Re: ARM embedded stuff Brian Carroll <bric-nospam@argonet.co.uk> - 2012-02-12 15:01 +0000
                Re: ARM embedded stuff Tim Hill <tim@invalid.org.uk> - 2012-02-19 13:38 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-19 14:02 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-19 16:47 +0000
                Re: ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-19 21:43 +0000
                Re: ARM embedded stuff charles <charles@charleshope.demon.co.uk> - 2012-02-19 22:07 +0000
                Re: ARM embedded stuff Alan Calder <alan_calder@o2.co.uk> - 2012-02-19 22:55 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-19 23:16 +0000
                Re: ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-20 00:03 +0000
                Re: ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-20 02:16 +0100
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-20 10:25 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-20 14:06 +0000
                Re: ARM embedded stuff "Bruce Goatly" <ss4@goatly.co.uk> - 2012-02-20 10:41 +0000
                Re: ARM embedded stuff charles <charles@charleshope.demon.co.uk> - 2012-02-20 06:26 +0000
                Re: ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-20 01:57 +0100
                Re: ARM embedded stuff Russell Hafter News <see.sig@walkingingermany.invalid> - 2012-02-20 08:45 +0000
                Re: ARM embedded stuff Stuart <Spambin@argonet.co.uk> - 2012-02-20 09:31 +0000
                Re: ARM embedded stuff Dave Higton <davehigton@dsl.pipex.com> - 2012-02-20 20:51 +0000
                Re: ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-19 18:35 +0100
                Re: ARM embedded stuff Folderol <folderol@ukfsn.org> - 2012-02-19 17:50 +0000
                Re: ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-19 19:19 +0100
                Re: ARM embedded stuff Rick Murray <heyrickmail-usenet@yahoo.co.uk> - 2012-02-19 19:21 +0100
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-19 19:01 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-19 18:59 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-20 08:06 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-20 10:36 +0000
                Re: ARM embedded stuff Brian Bailey <bbailey@argonet.co.uk> - 2012-02-20 14:04 +0000
                Re: ARM embedded stuff Chris Evans <chris@cjemicros.co.uk> - 2012-02-13 14:37 +0000
                Re: ARM embedded stuff "Dave Plowman (News)" <dave@davenoise.co.uk> - 2012-02-13 15:57 +0000
  Re: ARM embedded stuff davehigton <davehigton14@googlemail.com> - 2012-02-09 03:20 -0800
    Re: ARM embedded stuff Folderol <folderol@ukfsn.org> - 2012-02-09 17:36 +0000
  Re: ARM embedded stuff Jim Nagel <jimnewsm10d@abbeypress.co.uk> - 2012-02-20 13:37 +0000

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