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MM MM is offline
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Default Ballpark figure needed: how many litres heating oil per day

On Wed, 20 Feb 2008 20:13:57 +0000, The Natural Philosopher
wrote:

Dave Baker wrote:
"MM" wrote in message
...
Typical new three-bed detached house, well insulated, new oil boiler,
average temperature in most rooms maintained to around 22 degrees C
from 8 am to 10 pm.

How much oil will the boiler consume very approximately in winter in
the UK? 5 litres per day? 10 litres? Much more? Much less?


Average annual usage is reckoned to be about 2000 litres, most of that in
winter of course, so 10 litres per day wouldn't be far off the mark. 22c is
pretty warm though. You could save a lot by turning that down a bit.


Funnily enough, it isn't that much of a difference, and the colder it
gets the less percentage difference it makes.

If the outside temp is - say 15 degrees, then going from 22 to say 19,
drops the temp drop across insulation from 7 degrees to 4
degrees..nearly halving the power.

But at zero outside, its from 22 to 19, - less than 15%.


Since the majority of the oil is burned when it IS that cold, there is
not a lot of gain to be had at all.


Thanks all for your replies. Thank goodness the weather's turned much
warmer this morning! By the way, anyone thought what they're going to
do when 1,000 litres = £1,000? Maybe another five years away, but....

Are there no plans on the internet for DIY nuclear mini-reactors? What
about fuel cells?

How much warmer would a house be in winter if it was surrounded by
walls of straw bales pushed close to the house walls?

MM