ᐅ What is the typical degree of heat loss overnight?

Created on: 14 Nov 2016 07:38
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Brandt123!
Hello,

in our newly built house (built in 2016) we currently do not have a heating system and only use the wood stove in the living room (6 kW). We heat from around 4 p.m. after work until about 10 p.m. Then, when we go to bed, the temperature inside is around 21.5°C (71°F). The stove is then turned off.

In the mornings, we wake up to about 17.5°C (63°F). (Current outside temperature at night is about -1/-2°C (30/28°F))

Is this normal? It seems like a significant temperature loss to me. Our house is about 145 m² (1,560 ft²).
I remember the seller saying how long the temperature would be maintained, etc.

What are your experiences?
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Bauexperte
15 Nov 2016 12:58
Hello,
Brandt123! schrieb:

I don’t know of any law that requires you to install a heating system. So, I could move in with just a wood stove if I wanted to. Which pipes are supposed to burst? We have 17 degrees Celsius (63°F) at the lowest point in the house. Nothing will burst.
For someone who admits to being a layperson, you come across as quite defiant!

The pipes probably won’t burst, but your screed floor could well become a problem because the house is only heated temporarily. I always wonder why builders choose this type of floor slab; it has disadvantages especially regarding sound transmission, and it is not cheaper either.
Brandt123! schrieb:

The building was dry from the very beginning.
How exactly do you know that?

Regards, Bauexperte
K
Knallkörper
15 Nov 2016 13:34
Nofret schrieb:
It would be different if you heated thoroughly, then the materials would warm up, and they would retain heat longer according to their thermal properties.

Not much would change. Wood simply has a low heat capacity, so it always stores relatively little heat in comparison. However, that does not mean it is necessarily uneconomical.
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Brandt123!
15 Nov 2016 14:33
Hi building expert: OK, I didn’t mean to be defiant. But what’s annoying is that in forums, you are usually immediately met with accusations, criticism, and negativity because everyone always thinks they know better and have the best solution. Especially with topics like this. Can someone show me where it says it’s legally not allowed to move into a house without heating (especially since the stove is in a way part of the heating system)? I’m not an expert and am happy to be corrected.

I’m not going to start a discussion about the chipboard now.

But that the construction was dry? – Why not? The panel is made of concrete. And it had plenty of time to dry.
Y
ypg
15 Nov 2016 14:38
@Brandt123!
You should read my posts more carefully and understand them properly.

Your house is not designed only for your wood stove, so you shouldn’t be surprised that it doesn’t get warm.

And of course, it is naive and irresponsible to accept the house without any heating system. From our side, it would be irresponsible to leave this fact uncommented so that others don’t think this is normal or acceptable.

Regards
AOLNCM15 Nov 2016 15:18
@Brandt123!
Don’t worry about it.
Even though 50% indoor humidity is a bit high for this time of year, with a solid wood house and no screed, as long as you heat and ventilate daily, there’s nothing to worry about.
Your heating system, given the size and construction type, won’t have much more capacity than your stove. I’d estimate about 9 kW (± hot water preparation).
The difference is that when sizing a heating system, a heating interruption of about 7 hours per day is assumed (not to be confused with full-load hours). In your case, the 6 kW stove currently runs for only about 6 hours.
A stove is an addition to a modern heating system, not a complete substitute.
G
garfunkel
16 Nov 2016 17:48
I find a 4°C (7°F) heat loss for a house that is currently only intermittently heated with a wood stove in one room to be low.

The temperature equalization that occurs after heating stops, from the unheated rooms to the heated room, will have a significant impact.

I also don’t understand how anyone could consider that a lot. If I could heat an entire new build (with whatever thermal insulation) from one room using a standard wood stove (without proper heat storage capabilities or the like), why would anyone still invest in gas, oil, or other expensive heating systems?

Then you could simply install a wood stove for about €2000 and that would be the heating solution... sure...