The heating is on !

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Guest
Eh? That sounds like a load of crap to me. Imagine your house is like a kettle. Is it more efficient to heat up the water in the kettle when you need it from cold or keep the water in the kettle warm all day?

Of course it is more efficient to heat up the water when you need it from cold. There is confusion between "Which method requires the least energy" and "Which method allows the house to heat up most quickly".

Minimum energy usage = turn the heating off completely when you don't need the house to be warm, let the house cool down, then blast the heat when you need it. Basic physics. The only way that this is not true is if the house you're warming is perfectly insulated......and of course it isn't
That's plagiarism I said exactly that. Cheat! get your own common sense.
 
OP
OP
Cuchilo

Cuchilo

Prize winning member X2
Location
London
Also , why would a café have a tea urn if its more efficient to boil the kettle every time someone wanted a cuppa .
 

nickyboy

Norven Mankey
OK....let's use the tea urn analogy. You can produce tea one of two ways; you can fill up the urn, get it nice and hot and keep it hot. When a customer comes in you have piping hot tea available immediately. Alternatively you can dispense with the urn and wait for a customer to come in and just heat up enough water to make a cup of tea for them.

To keep it simple, lets assume that during the day you use up exactly the volume of water in the urn. You will have heated up exactly the same volume of water using either method, to the same temperature (100C) so the energy required to do that is the same. But during the day, you also have to keep the water in the urn warm as well, so that's extra energy.

So why use an urn? Cos a customer wants a fast cup of hot tea. If you boil each cup of water it is more energy efficient but slower
 

G3CWI

Veteran
Location
Macclesfield
There is some real rubbish on the internet on these topics. One "expert" giving a physics perspective (elsewhere I hasten to add) wrote about "heat rising".

The electrician at my factory told me that some new electric heaters were far more efficient than our old ones. That I would like to see...
 

welsh dragon

Thanks but no thanks. I think I'll pass.
One would wouldn't one - until the wood runs out then one wouldn't would one?

Hopefully not too wooden - it's the way I tell them :laugh:


Obviously its the way you tell them, and they aren't very good. :laugh:

One wood expect to get enough wood to last the entire winter wouldn't one.
 

Mrs M

Guru
Location
Aberdeenshire
:sun:Our heating has been on for weeks.
Set to come on for a couple of hours in the morning, then about an hour befor we arrive home.
(we came home early once and found our deaf, elderly cat we had a few years ago, in bed under the covers with her head on the pillow, her wee face was a picture when she realised she'd been busted)
If the temp goes below 16 it comes on automatically.
Insulation is VIP, noticed a big difference since we had new windows and doors installed.
 

brand

Guest
O

One wood expect to get enough wood to last the entire winter wouldn't one.


And if not then one should spend longer on one's bike and in one's pub. When cycling ones calories consumption is lower than the calories used to heat one's house. One can cycle for an hour on a banana while it would take one 100 bananas to heat a small bungalow for an hour. One is of course ignoring food miles.
 

welsh dragon

Thanks but no thanks. I think I'll pass.
And if not then one should spend longer on one's bike and in one's pub. When cycling ones calories consumption is lower than the calories used to heat one's house. One can cycle for an hour on a banana while it would take one 100 bananas to heat a small bungalow for an hour. One is of course ignoring food miles.


I'd rather cycle on a bike than a banana if you don't mind.
 
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