ᐅ Heating Concept for a 3-Liter-or-Better House, District Heating Possibly Combined with Underfloor Heating, etc.
Created on: 13 Jun 2020 13:07
A
altgauerHello,
since I have heard a wide range of opinions and advice about heating from many sources beforehand, I wanted to ask a few questions to neutral readers.
The house will have roughly two full floors, each about 90 sqm (970 sq ft).
Regarding insulation, I am willing to invest a bit more if it leads to lower maintenance costs.
I understand that I will need a good energy consultant to calculate the final values, etc., but I want to be as well-prepared as possible.
Whether heating will be done with an air-source heat pump or district heating depends on the tariff for district heating—I hope to receive an offer soon.
At the site visit, the engineer responsible for the utility connections already suggested building the system so that the connection could possibly be replaced by a private heat pump. That seemed plausible to me.
However, everyone keeps talking about the necessity of underfloor heating, and if I remember correctly, solid wooden floorboards and underfloor heating don’t really go together—is that true? Or are there alternatives? I would like to have wooden floorboards, and a wall heating system seems rather impractical because of the wooden walls, which I do not want to cover.
Another suggestion I received from a different source (chimney sweep) was to install a wood stove with an air-flue chimney on each floor, produce hot water with a domestic water heat pump, and provide electric backup heating during the transition periods since there will be a photovoltaic system installed. The controlled ventilation combined with the thick insulation would ensure a comfortable temperature anyway.
Well, now here I am. Is this last concept really feasible and practical? Or does everyone just want to sell their preferred system?
since I have heard a wide range of opinions and advice about heating from many sources beforehand, I wanted to ask a few questions to neutral readers.
The house will have roughly two full floors, each about 90 sqm (970 sq ft).
Regarding insulation, I am willing to invest a bit more if it leads to lower maintenance costs.
I understand that I will need a good energy consultant to calculate the final values, etc., but I want to be as well-prepared as possible.
Whether heating will be done with an air-source heat pump or district heating depends on the tariff for district heating—I hope to receive an offer soon.
At the site visit, the engineer responsible for the utility connections already suggested building the system so that the connection could possibly be replaced by a private heat pump. That seemed plausible to me.
However, everyone keeps talking about the necessity of underfloor heating, and if I remember correctly, solid wooden floorboards and underfloor heating don’t really go together—is that true? Or are there alternatives? I would like to have wooden floorboards, and a wall heating system seems rather impractical because of the wooden walls, which I do not want to cover.
Another suggestion I received from a different source (chimney sweep) was to install a wood stove with an air-flue chimney on each floor, produce hot water with a domestic water heat pump, and provide electric backup heating during the transition periods since there will be a photovoltaic system installed. The controlled ventilation combined with the thick insulation would ensure a comfortable temperature anyway.
Well, now here I am. Is this last concept really feasible and practical? Or does everyone just want to sell their preferred system?
N
nordanney13 Jun 2020 14:28altgauer schrieb:
If I remember correctly, wooden floorboards and underfloor heating don’t really go together, is that right? No, almost all types of flooring are compatible with underfloor heating.
altgauer schrieb:
I was also advised by someone else (chimney sweep) to install a wood stove with an air-flue chimney on each floor, Interesting. Who is going to keep the stoves running around the clock on two floors? How will the heat be distributed evenly?
altgauer schrieb:
to electrically top up heating during transitional seasons, since there is a photovoltaic system, So the sun is supposed to know it has to shine in autumn so you don’t have to buy expensive electricity?
altgauer schrieb:
the controlled ventilation system combined with the thick insulation will ensure a comfortable temperature anyway. That’s like trying to warm the house in autumn by opening the windows. The controlled ventilation system causes heat loss and is not a heating source.
Hello,
I just realized that I may have forgotten something important above. Sorry about that.
In the preliminary calculation for the wall/insulation, a U-value of 0.133 W/m²K is shown, and that might be why there are rumors in the village that I want to build a passive house.
If such insulation were really that effective, that would of course be great, and yes, I am fully aware that the basement, roof, windows, and doors are also crucial components in this.
Would this theoretically be feasible?
I just realized that I may have forgotten something important above. Sorry about that.
In the preliminary calculation for the wall/insulation, a U-value of 0.133 W/m²K is shown, and that might be why there are rumors in the village that I want to build a passive house.
If such insulation were really that effective, that would of course be great, and yes, I am fully aware that the basement, roof, windows, and doors are also crucial components in this.
Would this theoretically be feasible?
N
nordanney13 Jun 2020 14:57Anything is possible. The only question is whether you want it, can afford it, and if it is economically viable.
H
hampshire13 Jun 2020 15:58I like your approach. I haven’t yet understood whether you want to optimize economically or also invest beyond the economic optimum. This question is important for the upcoming input.
What does a Three Liter House mean to you? One liter of diesel provides about 10.4 kWh of energy. At 3 l/d, that would be 31.2 kWh/day and 11,388 kWh per year.
What does a Three Liter House mean to you? One liter of diesel provides about 10.4 kWh of energy. At 3 l/d, that would be 31.2 kWh/day and 11,388 kWh per year.
The heating capacity is usually specified per square meter.
3 liters of heating oil = 30 kW per year per square meter.
Passive houses require about 1.5 liters.
Are you building with a general contractor?
Who will install the heating system?
For low-energy houses, there is also the Stiebel Eltron LWZ 604 air system.
Two wood stoves sound like something from the 1960s.
Or alternatively, finally having a fireplace to make money from.
District heating—how much does the connection cost?
3 liters of heating oil = 30 kW per year per square meter.
Passive houses require about 1.5 liters.
Are you building with a general contractor?
Who will install the heating system?
For low-energy houses, there is also the Stiebel Eltron LWZ 604 air system.
Two wood stoves sound like something from the 1960s.
Or alternatively, finally having a fireplace to make money from.
District heating—how much does the connection cost?
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