ᐅ Hydronic Wood-Burning Stove, Underfloor Heating, Heat Pump, Photovoltaic System in New Construction?
Created on: 21 Dec 2014 15:56
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orkan212Hello, we plan to start building in October.
The house will be heated with underfloor heating, powered by a heat pump, which is supplied by a photovoltaic system.
Additionally, we want a wood-burning stove anyway, and we would like to install a water-bearing stove and include it in the pipework planning.
Is this a good solution?
Do we still need a water storage tank if the stove (pipes) is integrated into the central water system during the new build?
We like the Oranier Polar Aqua quite a bit.
The house will be heated with underfloor heating, powered by a heat pump, which is supplied by a photovoltaic system.
Additionally, we want a wood-burning stove anyway, and we would like to install a water-bearing stove and include it in the pipework planning.
Is this a good solution?
Do we still need a water storage tank if the stove (pipes) is integrated into the central water system during the new build?
We like the Oranier Polar Aqua quite a bit.
I
Irgendwoabaier21 Dec 2014 19:11A) Heating load?
B) Are the costs of the solution relevant?
C) Of course, a thermal storage tank will be necessary, as the full capacity of the stove will hardly be useful in the house at the moment it is available. Where this thermal storage can be integrated into the system depends on numerous factors and should be left to the HVAC and plumbing system designer.
B) Are the costs of the solution relevant?
C) Of course, a thermal storage tank will be necessary, as the full capacity of the stove will hardly be useful in the house at the moment it is available. Where this thermal storage can be integrated into the system depends on numerous factors and should be left to the HVAC and plumbing system designer.
We haven’t reached that point yet, but I had to satisfy my curiosity first.
Costs do matter, so for now we are installing underfloor heating with an air-to-water heat pump and preparing the pipes and wiring for a stove and photovoltaic system. The stove will come first for the cozy feeling, and if the finances allow, the photovoltaic system will be installed later.
I thought this would ultimately be very efficient, or am I wrong?
Costs do matter, so for now we are installing underfloor heating with an air-to-water heat pump and preparing the pipes and wiring for a stove and photovoltaic system. The stove will come first for the cozy feeling, and if the finances allow, the photovoltaic system will be installed later.
I thought this would ultimately be very efficient, or am I wrong?
N
nordanney21 Dec 2014 21:23How do you plan to power the heat pump with photovoltaic electricity in winter? Today, our output was just 1.5 kWh (we have a 7 kWp system). That is really not enough for the heat pump—especially not at night. You will definitely need to buy additional electricity.
Photovoltaics for self-consumption is great, as long as you have enough consumers. It should work well in summer!
Photovoltaics for self-consumption is great, as long as you have enough consumers. It should work well in summer!
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Bauexperte21 Dec 2014 23:33Good evening,
If the system is properly sized and a storage unit is installed, it’s “only” about 30% per year. If that doesn’t pay off – with the government subsidy from KfW – then what will?
Regards, Bauexperte
nordanney schrieb:Oh please…
Our output today was just 1.5 kWh (we have a 7 kWp system). That’s really not enough for the heat pump – especially not at night. You’ll definitely have to buy electricity
If the system is properly sized and a storage unit is installed, it’s “only” about 30% per year. If that doesn’t pay off – with the government subsidy from KfW – then what will?
Regards, Bauexperte
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nordanney22 Dec 2014 08:23I never said that the photovoltaic system is not cost-effective.
It’s just not feasible to run the heat pump solely on it. Current heat pump consumption: about 20 kWh per day. Current photovoltaic system output: 1.5 - 4 kWh per day.
The self-consumption rate is already a significant 100% in that context. Over the course of a year, we reach about 35% self-consumption. Considering self-consumption and the system’s output, the installation pays for itself in approximately 12 years (theoretically).
At the time (a year ago), storage solutions were simply too expensive for us, didn’t fit the house, and as for lifespan, I’ll give it three question marks.
It’s just not feasible to run the heat pump solely on it. Current heat pump consumption: about 20 kWh per day. Current photovoltaic system output: 1.5 - 4 kWh per day.
The self-consumption rate is already a significant 100% in that context. Over the course of a year, we reach about 35% self-consumption. Considering self-consumption and the system’s output, the installation pays for itself in approximately 12 years (theoretically).
At the time (a year ago), storage solutions were simply too expensive for us, didn’t fit the house, and as for lifespan, I’ll give it three question marks.
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