ᐅ New construction without solar panels and without a heat pump— is it possible?
Created on: 1 Mar 2014 11:58
P
Panama17
Hello everyone,
I’m just at the very beginning of planning a house and am slowly starting to learn about the technical aspects, but I have almost no knowledge so far.
At least I already know that there is an Energy Saving Ordinance 2014 that must be followed.
Now my questions:
- Is it possible to build according to the Energy Saving Ordinance without using solar technology and a heat pump?
- Which measures would then likely be absolutely necessary?
I’m asking because I think that solar systems probably wouldn’t make sense for us due to the unfavorable orientation of the building and shading from the neighboring property.
And I’m not keen on a heat pump; we have gas available on our street and I would prefer a heating system based on that.
Basically, about our project: it’s a detached single-family house with approximately 200m2 (2,150 sq ft) of living space over 1.5 to 2 floors plus a full basement. We definitely want to have a fireplace in the living/dining area, but I have no idea if that would be helpful or rather a disadvantage?
Does anyone have literature recommendations? I’d like to study the topic in detail.
Thanks in advance!
I’m just at the very beginning of planning a house and am slowly starting to learn about the technical aspects, but I have almost no knowledge so far.
At least I already know that there is an Energy Saving Ordinance 2014 that must be followed.
Now my questions:
- Is it possible to build according to the Energy Saving Ordinance without using solar technology and a heat pump?
- Which measures would then likely be absolutely necessary?
I’m asking because I think that solar systems probably wouldn’t make sense for us due to the unfavorable orientation of the building and shading from the neighboring property.
And I’m not keen on a heat pump; we have gas available on our street and I would prefer a heating system based on that.
Basically, about our project: it’s a detached single-family house with approximately 200m2 (2,150 sq ft) of living space over 1.5 to 2 floors plus a full basement. We definitely want to have a fireplace in the living/dining area, but I have no idea if that would be helpful or rather a disadvantage?
Does anyone have literature recommendations? I’d like to study the topic in detail.
Thanks in advance!
D
DerBjoern1 Apr 2014 07:49p.galios schrieb:
Why do you need to ventilate when you are not at home?
Moisture only occurs when you are at home from breathing, showering, cooking...Because moisture is stored in walls (plaster) and furniture and is gradually released again. In addition, pets, plants, wet sinks/showers, towels, dishes, and so on also release moisture even when no one is at home.
More energy is lost operating a ventilation system than through simple window ventilation.
A ventilation system is purely a comfort feature; even energy recovery cannot compensate for the operational losses.Not really. Our system recovers significantly more heating energy than it consumes in electrical power. However, financially it does not really pay off when you factor in filter costs, initial investment, and interest expenses. Since we have a gas condensing boiler, we also did not really save much on the heat generator through the ventilation system.
D
Doc.Schnaggls1 Apr 2014 12:07Mycraft schrieb:
A fireplace slightly increases the cost of the ventilation system because you then need a pressure monitor... Also, you need a recirculation hood in the kitchen. An exhaust hood is not allowed.Hello,
you are correct about the recirculation hood.
However, a fireplace does not necessarily require a pressure monitor. For example, our stove is certified according to DIBt.
A BIBT-certified stove can be operated with its own external combustion air supply, as well as sealing and automatic self-locking firebox door, even under up to 8 Pa negative pressure.
Therefore, no differential pressure monitor is needed.
Regards,
Dirk
N
nordanney1 Apr 2014 13:51Doc.Schnaggls schrieb:
Hello,
you are right about the recirculating hood.
However, a chimney does not necessarily require a differential pressure monitor. Our wood stove, for example, is certified according to DIBt standards.
A DIBt-certified wood stove can be operated with up to 8 Pa (0.03 inches water column) negative pressure thanks to its own external combustion air supply, as well as the sealing and the automatic self-locking of the combustion chamber door.
Therefore, a differential pressure monitor is not needed.
Best regards,
DirkI have to correct you (unfortunately). You can only do without a differential pressure monitor ifa) the controlled ventilation system constantly maintains a positive pressure inside the house, or
b) it is ensured that in case of exhaust ventilation failure, the entire controlled ventilation system automatically shuts down
and the chimney inspector cooperates.
We also have a controlled ventilation system + DIBt-certified combustion appliance + external air supply + recirculating hood, and our chimney inspector does not care. We will only get approval if the differential pressure monitor is installed! There are probably inspectors who are less strict, but unfortunately you cannot choose.
... and again about EUR 1,300 gone ops:
D
Doc.Schnaggls1 Apr 2014 13:55nordanney schrieb:
I’m afraid I have to correct you. You can do without a differential pressure switch if
a) the mechanical ventilation system with heat recovery constantly creates positive pressure inside the house, or
b) it is ensured that if the exhaust ventilation fails, the entire mechanical ventilation system shuts down automatically
and the chimney inspector cooperates.OK, thanks for the clarification. Then we must have gotten a flexible chimney inspector...
You really never stop learning when it comes to house building...
Kazazi schrieb:
Hello VillaMoTo,
I’m interested in more detailed figures regarding the insulation and technical systems – we are considering something similar but with T8 bricks and a comparable house size, we can’t reach KFW 70 standards.
Best regards, KazHello Kazazi,
Which specific figures are you interested in?
I took a look at our KFW application documents, and it states the following:
"Calculated annual primary energy demand Qp according to the Energy Saving Ordinance for the new building is: 52.9 kWh/(m²a)"
"Calculated transmission heat loss H'T according to the Energy Saving Ordinance for the new building is: 0.341 W/(m²K)"
As mentioned, we used the perlite-filled bricks from Wienerberger, a gas boiler (Viessmann Vitodens 300-w), underfloor heating throughout the entire house, decentralized ventilation from Lunos e2 with heat recovery, and also have a large number of sizable windows (51.4 m² (553 ft²)) facing south and west. The roof is insulated conventionally with mineral wool insulation (I believe 20 cm (8 inches)).
Best regards,
VillaMoTo
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