instant hot water...

Page 2 of 3  
IMM wrote:

No, its not. Power stations have scrubbers that remove sulphur from the flue gases. They alsio can be run under very well controlled regimes, maximising het output, and are properly maintained.
The only problem is that something like 40% of teh heat goes either up the coolling towers, or heating teh local sea.lake/river up in the case of those that use local water to run teh condensors. Great for fishfarming, but it would have been better to use it to run underfloor heating - JUST the right temp usually.
The overall best energuy efficieciency sets are combined cyle sets - often gas turbines - supplying local electriity, feeding teh grid, and supplying local hot water. sadly it needs something the size of a hospital to justify instaling one.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

You haven't a clue.
--
--

Checked by AVG anti-virus system (http://www.grisoft.com ).
Version: 6.0.548 / Virus Database: 341 - Release Date: 05/12/2003
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
IMM wrote:

No, thats you!

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

You are pathetic at times.
--
--

Checked by AVG anti-virus system (http://www.grisoft.com ).
Version: 6.0.548 / Virus Database: 341 - Release Date: 05/12/2003
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Hello The

That's given me an image of a bunch of sad looking women with head scarves sitting on stools around a chimney with fishing nets.
--
Simon Avery, Dartmoor, UK
uk.d-i-y FAQ: http://www.diyfaq.org.uk /
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Simon Avery wrote:

Thats because you went to a sad excuse of a polytechnic that called itself a 'uni' to get more snob appeal.
If you had studied properly at a proper uni, you would know all about chemical scrubbing.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Simon Avery wrote:

Opps. Sorry about last reply. I assumed you were IMM again.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

This is demonstrative of the confused state of his mind. Sad but true.
--
--

Checked by AVG anti-virus system (http://www.grisoft.com ).
Version: 6.0.548 / Virus Database: 341 - Release Date: 05/12/2003
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

The pumps are approx 100. The overall energy cost in water saved/energy used/capital cost must go against it.
--
--

Checked by AVG anti-virus system (http://www.grisoft.com ).
Version: 6.0.542 / Virus Database: 336 - Release Date: 18/11/2003
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Happened to be in Travis Perkins this morning and, idly waiting, I skimmed through the Professional Heating & Plumbing Installer mag they give away. On page 42 of the December 2003 issue, there are actually two different makes of device to achieve what the OP asked for.
Both are electric elements that keep water in a section of pipe hot. One is simply a heating tape which you then insulate over. (Flexelec self limiting heating tapes.) The other is a whole pipe that includes the element and insulation. (Hotwat Pipe from HeatSafe Cable Systems.)
I suspect that both would be cheaper to install than a bronze pump plus extra pipework. However, running costs might be another matter altogether.
Rod
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
http://www.heat-trace.ltd.uk/english/applic/hotwat.htm
cant find much info online about the other system though.
steve
Rod Hewitt wrote:

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

magazine has a reader enquiry service - readerlink 433 for the Flexelec.
In fact -
<http://www.hamerville.co.uk/_public/readerlink/default.asp?subID=7
Rod
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

steve
How it works? A combi boiler heats water just like a normal boiler by its gas to water heat exchanger. It has a pump which diverts the heated hot water (primary water, that is the water in the radiators) through a water to water plate heat exchanger, which transfers the heat from the primary water to the cold incoming secondary water (secondary is fresh water). Hence, cold water coming in from the water mans is instantly heated. There is a small lag at the taps while the boiler warms up. This is overcome in some models by pre-warming the water to water heat exchanger or incorporating a small preheated water vessel.
--
--

Checked by AVG anti-virus system (http://www.grisoft.com ).
Version: 6.0.542 / Virus Database: 336 - Release Date: 18/11/2003
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
IMM wrote:

i know how a combi works...but it is not instantly available at the taps is it? apparently in the old early victorian ch systems, hot water was constantly circulated through the pipes by convection only ie instantly hot when you turn the tap on!
steve
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
R P McMurphey wrote:

Its already been explained. You set up a small circulation system with flow and return to each tap.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

What? A flow and return to each tap? You install a pipe loop and the taps are teed off this at the nearest point.
--
--

Checked by AVG anti-virus system (http://www.grisoft.com ).
Version: 6.0.542 / Virus Database: 336 - Release Date: 18/11/2003
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
IMM wrote:

Yes. Weird huh?

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

It can be. An Ariston model has a connection for a secondary circulation pump.
--
--

Checked by AVG anti-virus system (http://www.grisoft.com ).
Version: 6.0.542 / Virus Database: 336 - Release Date: 18/11/2003
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
IMM wrote:

Right naswer, but not to the question. Typical!
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

What a ***!" He said "i read some time ago that some hw systems were designed to allow natral constant flowing of hot water". A combi does that.
--
--

Checked by AVG anti-virus system (http://www.grisoft.com ).
Version: 6.0.542 / Virus Database: 336 - Release Date: 18/11/2003
  Click to see the full signature.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Related Threads

    HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.