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[Figureman52]

Never sure if it's better to let it all cool down for six hours during the day and then burn hard to bring the temp back up, or maintain a constant temp throughout the day.

[Kevin Wood]

Never sure if it's better to let it all cool down for six hours during the day and then burn hard to bring the temp back up, or maintain a constant temp throughout the day.

Let it cool down. Loss of heat through insulation is proportional to the temperature difference between inside and outside so if you let it cool down when you are out or don't require heat, it's less energy you need to pump into the place.

[omega3000]

We have double glaze doors cem , but the floor in the main living room is wooden and bare , external air bricks are causing quite a draft'way underneath the floor and blowing up into any small gaps . I have filled all i can see but still blows through  Only thing to do is block the external vent brick but dont know if thats a good idea 

The vent brick will be there for a reason EMD, if you block it up you may cause problems elsewhere.  Gas appliances for example need adequate ventilation or you may give yourself a condensation problem causing black mould.  I'd look for more gaps to fill, or cover the floor with rugs or carpet. 

No more gaps to fill , i have blocked off the air brick temporally to see if it makes any difference ... draught only on feet now , feet like blocks of ice so must get some slippers 


Must add , no gas appliances 

[Kevin Wood]

Sounds like a carpet would be a wise investment, unless you're particularly fond of the wood floor. Either that or replace it with laminate, which will cover all the gaps.

[omega3000]

Sounds like a carpet would be a wise investment, unless you're particularly fond of the wood floor. Either that or replace it with laminate, which will cover all the gaps.

That was ripped up and wood floor was exposed and stained kevin , i think some big rugs will solve a lot of it  i just found another gap and filled it pronto 

[cem_devecioglu]

"Convective heating or cooling in some circumstances may be described by Newton's law of cooling: "The rate of heat loss of a body is proportional to the difference in temperatures between the body and its surroundings." However, by definition, the validity of Newton's law of cooling requires that the rate of heat loss from convection be a linear function of ("proportional to") the temperature difference that drives heat transfer, and in convective cooling this is sometimes not the case. In general, convection is not linearly dependent on temperature gradients, and in some cases is strongly nonlinear. In these cases, Newton's law does not apply."
 
http://en.wikipedia.org/wiki/Heat_transfer

[Kevin Wood]

Agreed, if you're talking about convection, but I'd say convection only plays a minor role in heat loss from a building. The main issue is conduction through the insulation in the floor, walls, roof, windows, etc.

Either way, turning the heating off when not required will give you lower bills than leaving it on to avoid the house cooling down.

[cem_devecioglu]

Agreed, if you're talking about convection, but I'd say convection only plays a minor role in heat loss from a building. The main issue is conduction through the insulation in the floor, walls, roof, windows, etc.

Either way, turning the heating off when not required will give you lower bills than leaving it on to avoid the house cooling down.

Kevin, homes are complex structures, although you can use conduction model simply, in reality there is also convection when air passages and air flow exist.. on a windy day your home will loose more than normal also

[Kevin Wood]

Agreed, if you're talking about convection, but I'd say convection only plays a minor role in heat loss from a building. The main issue is conduction through the insulation in the floor, walls, roof, windows, etc.

Either way, turning the heating off when not required will give you lower bills than leaving it on to avoid the house cooling down.

Kevin, homes are complex structures, although you can use conduction model simply, in reality there is also convection when air passages and air flow exist.. on a windy day your home will loose more than normal also

Of course, but it'll still lose less if the heating is off.

[cem_devecioglu]

Agreed, if you're talking about convection, but I'd say convection only plays a minor role in heat loss from a building. The main issue is conduction through the insulation in the floor, walls, roof, windows, etc.

Either way, turning the heating off when not required will give you lower bills than leaving it on to avoid the house cooling down.

Kevin, homes are complex structures, although you can use conduction model simply, in reality there is also convection when air passages and air flow exist.. on a windy day your home will loose more than normal also

Of course, but it'll still lose less if the heating is off.

agreed..

[cem_devecioglu]

sunday 20 celcius.. today 0 now and snowy  
 
Nickbat are we doomed ? 
 
 

[Lizzie_Zoom]

sunday 20 celcius.. today 0 now and snowy  
 
Nickbat are we doomed ? 

Well I say we are all doomed Cem, all doomed! Doomed is what we are!

Well we are if you believe the Mayan calendar, we are all doomed on December 21st 2012!!

 

[Kevin Wood]

sunday 20 celcius.. today 0 now and snowy  
 
Nickbat are we doomed ? 

Well I say we are all doomed Cem, all doomed! Doomed is what we are!

Well we are if you believe the Mayan calendar, we are all doomed on December 21st 2012!!

 

Won't bother replacing my front tyres yet, then. They've got a good 1.60001 mm of tread left. That'll see me out.

[Lazydocker]

Either way, turning the heating off when not required will give you lower bills than leaving it on to avoid the house cooling down.

I always thought that but we've tried both and it's actually cheaper for us to leave it on But we have started to turn the stat down a little (if we remember ) when we're out. Mind you... It's not often the house is empty for more than a couple of hours anyway

The wood burner gets lit of an evening (better do that in a minute) and that then takes the temp up to what SWMBO wants and keeps the heating off until the early hours of the morning when the temp has dropped enough for the stat to fire it up again

[Lizzie_Zoom]

sunday 20 celcius.. today 0 now and snowy  
 
Nickbat are we doomed ? 

Well I say we are all doomed Cem, all doomed! Doomed is what we are!

Well we are if you believe the Mayan calendar, we are all doomed on December 21st 2012!!

 

Won't bother replacing my front tyres yet, then. They've got a good 1.60001 mm of tread left. That'll see me out.