Talk:District heating

Reference to PAL technology?

In the section titled "District Cooling" there is an odd paragraph about a project management company called PAL technology that doesn't really seem to fit at all. I'd opt to remove it, but I just came across this article and don't have a lot of subject matter expertise. Dgstangel (talk) 23:02, 23 October 2009 (UTC)

Looks encyclopedic to me

Because it can be photographed :) Well, I know that's only one criterion, yeah. But there is a whole story here with regard to centralised social provision in the UK, at least, that isn't quite just a matter of a dictionary entry. I'm also not quite clear what that tower I imaged does exactly, not being a hydraulic engineer, so something about the engineering would be good. Efficiency comparisions would be good too, plus I recollect that some of the Soviet schemes (I think some were implemented, actually) were designed to use nuclear reactor secondary coolant. Really needs an expert, this page. Tarquin Binary 12:55, 24 January 2006 (UTC)

seems like an encyclopaedic article to me now - will delete transwiki note. I am sure it was a useful dicdef too, but as it has history can stay here. Justinc 00:15, 25 January 2006 (UTC)

needs some more categories though - can anyone work out what? dont know the engineering cats... Justinc 00:16, 25 January 2006 (UTC)

New York?

By what standard does "Consolidated Edison of New York (Con Ed) operate the largest commercial district heating system ever built"? http://www.energy.rochester.edu/dh/largest.htm ranks New York 9th, by annual heat sales. I'll be tagging that needing a citation for now.

By the way, http://www.energy.rochester.edu/dh/ contains a lot of useful material for anybody interested in improving this article. SGJ 20:09, 19 February 2006 (UTC)

Small communities?

Any references to communities completely heated by district heating? The only one that comes to mind is in Quebec, Canada in a village of approx 600, Ouje-bougoumou. Here's two links http://www.ouje.ca/content/our-story/energy.php and http://www.ouje.ca/content/our-story/heating.php Heliatrope Fish (talk) 08:12, 29 January 2010 (UTC)

You will find plenty in Denmark. In the 1990's at least 80 green field CHP plants with district heating grids were built there. See e.g. [1]. (Not to mention Copenhagen where 90-95% of the population is supplied with district heating as already noted in the article).

--Claus Hindsgaul (talk) 08:53, 29 January 2010 (UTC)

Teleheating

I made teleheating redirect here, it was a one sentence article with a very similar definition. It was also already copied to Wiktionary. Google search also shows that it is commonly used as a synomymom for district heating. Question is, is teleheating so well-known term that it is worth mentioning in this article? SGJ 20:14, 8 March 2006 (UTC)

It would seem that the term is in some use. I have added it to the article. --DV8 2XL 20:33, 8 March 2006 (UTC)

More specifics

More specifics would be good here about district heating (and cooling) in terms of efficiency improvements, energy savings, use of biomass and general revitilization of outdated DH systems - promising area for technology upgrades and desirability due to improved environmental performance. Just an observation - there is a ton of material out there on this.

Technical description would be useful

For tech-oriented readers it would also be of interest to know more about some key technical aspects, e.g.

• typical and maximum lengths of the heat pipes
• typical temperatures of water/steam in feed and return pipes
• typical materials and thicknesses used for the pipes and insulation
• typical % of heat lost due to conduction (i.e. incomplete insulation of the pipes)

Typofier 17:26, 14 February 2008 (UTC)

 Added average % heat losses for Norwegian distribution systems.(Matthew.homola (talk) 18:56, 17 April 2008 (UTC))

Should be District energy?

I think it's a little confusing that this article is for "district heating", and down at the bottom has a second section on "district cooling". Dictionary of energy (Cleveland et al., Elsevier c2006) defines the term "district energy" as "a term for energy ... that is produced at a central location and then transmitted to various specific sites in a given area (district) for uses such as space heating and cooling or domestic hot water heating".Babrahamse (talk) 18:58, 14 June 2010 (UTC)

Poland

I belive district heating is used in more than 100 (have no idea exctly how much, maybe even 250) cities in Poland. It is very common, and even small cities with pop. of about 20,000 are connected to such heating. Of course not all building use it, mainly big buildings with lots of flats, but there was lots such buildings build in communist era, so as most of district heating system.