Wikipedia:Reference desk/Archives/Miscellaneous/2014 November 21

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November 21

How can I identify the figure in this picture?

In the first big picture here, there is only one man that wears a white hat, He is on the right side. who is he? 5.28.158.161 (talk) 00:20, 21 November 2014 (UTC)

Better to ask on the Turkish Wikipedia. That news article is gibberish English, anyway. KägeTorä - (^影_虎) (Chin Wag) 00:32, 21 November 2014 (UTC)

Yes, we are unlikely to be able to help here. From a quick search, the man doesn't seem to be amongst those named in the article. AndyTheGrump (talk) 00:37, 21 November 2014 (UTC)

Whoever he is, isn't he just one of a group of historical (reen)actors? (Look at his beard, for example) Whether he is impersonating someone specific, I couldn't tell — I wasn't able to find anyone with turban and suit jacket in any old photos from the Erzurum Congress. ---Sluzzelin talk 08:54, 22 November 2014 (UTC)

Whose behind the runtshit vandal?

Has anyone investigated who exactly might be behind the runtshit vandal?Whereismylunch (talk) 03:21, 21 November 2014 (UTC)

We don't reveal user's identities to third parties, seek elsewhere. μηδείς (talk) 04:27, 21 November 2014 (UTC)

It may well have been investigated, but checkusers are forbidden to "out" anyone. This is all that's publicly known about that user. ←Baseball Bugs ^{What's up, Doc?} carrots→ 16:11, 21 November 2014 (UTC)

Radiators

In a house with radiators in every room, would it cost twice as much to keep one radiator on in two rooms (i.e. one each) than it would to keep just one radiator on in one room? After all, the water is already in the boiler and heated. It's not like gas fires or electric heaters, which of course would consume twice as much energy for two as for one. KägeTorä - (^影_虎) (Chin Wag) 12:45, 21 November 2014 (UTC)

One thing to keep in mind is that in the one-radiator on scenario, it will loose heat more quickly than the two-radiators on scenario, because of how the heat equation works. I think it will definitely cause the boiler to use more fuel per radiator if only one is on. But that's not the same as total cost. To answer your specific question: no, will not be precisely twice as much, it will be less, in part for the reasons you describe. How much less than twice as much would require either a lot of assumptions or a lot of measurements. SemanticMantis (talk) 15:18, 21 November 2014 (UTC)

(e/c)The greater the number of radiators turned on, the more heat will be lost from the system, and the cooler the water will be when it arrives back at the boiler, so it will need to be supplied with more heat. It won't be twice as much because heat is lost from the piping and other places, but obviously if you want more output you'll need more input.--Shantavira|^{feed me} 15:26, 21 November 2014 (UTC)

I think the answer would have to be that it depends on the specifics of the heating system and, of course, what you mean by keeping a radiator on in only one room. Do you intend to let one room be cold or do you want both rooms to be warm, but heated by the same element?

One thing to remember is that energy isn't free, even if the water is already heated. The heated water circulates and returns to the boiler at a lower temperature than it started with. The difference in temperature is a measure of how much energy (heat) the elements have radiated (and losses through piping etc. that still mostly helps to heat the house). For a given temperature in the room(s) the more elements you have connected the lower the water temperature will have to be. Conversely, if you want to heat a large area with only one element it will have to be very hot. There will be an optimal water temperature for the heating system, where it heats the water most efficiently, and whatever solution makes the boiler work closest to the optimum will use the least energy. Sjö (talk) 12:36, 23 November 2014 (UTC)