ᐅ Air source heat pump, hydronic fireplace stove, how they work, underfloor heating?

Hello!

Who can explain to me how an outdoor air-source heat pump works in combination with a non-water-based wood stove?
I just can’t find any explanation online about how this works technically.

This system seems to be the right choice for us since we want underfloor heating in our new single-family home and, for cozy warmth, we wanted a wood stove anyway.

Thanks in advance for any information.

Regards,
phobos

Hello,

phobos schrieb:
..Who can explain to me how an outdoor air source heat pump works in conjunction with a non-water-based wood stove?

Counter question:
1. What exactly is an outdoor air source heat pump?
2. How does the responsible HVAC engineer assess the situation?

Best regards

Counter question:
1. What is an outdoor air source heat pump?
2. How does the responsible MEP planner assess the matter?

1. Air-to-water heat pump installed outdoors
2. MEP planner? What is an MEP planner and why would I need one?
I just want to understand the principle and (not yet) plan anything.

Regards
phobos

phobos schrieb:
1. Air/water heat pump installed outdoors

So, what is it exactly—fully installed system or just the evaporator (split system)? Is it fully modulating or not?

phobos schrieb:
..2. TGA planner? What is a TGA planner and why would I need one?

TGA stands for Technical Building Services Engineering. You need one if you want the system to actually run with low operating costs. Otherwise, you can trust the salespeople offering some “ultimate” solutions 😉

phobos schrieb:
...I just want to understand the principle and not plan yet.

It’s quite simple: there are two heat generators, but the wood stove doesn’t have a sustainable effect; it only provides temporary “cozy warmth.”

Best regards.

This is relatively simple: there are two heat generators, with the wood stove not providing any lasting effect, only a temporary “cozy result.”

I don’t quite understand the part about the sustainable effect not providing any benefit.
I have read quite a few other articles where a bivalent heat pump system is recommended. The reason is that on cold days the heat pump is supported, which is supposed to reduce electricity costs.

That’s the reason for using the wood stove.
There are water-carrying (hydronic) and non-water-carrying versions.
The latter is, among other things, cheaper to purchase and fully serves its purpose.

I don’t want to have to justify here why I choose this or that system.
That will come when I’m really planning definitively.

At this stage, I just want to understand how this combination works.

Regards
phobos

phobos schrieb:
I don’t understand the supposed sustainable effect that is said to have no impact.

Unfortunately, I cannot change that! But: How much percentage of effective annual heating output can the wood stove actually deliver overall, not just in relation to the room where it is installed, with a net heating share (JNG) below 50%? Is the wood free or do you have to buy it? And what is the space heating load of the stove’s installation room compared to the total heating load of the building?

phobos schrieb:
…I have already read several articles recommending a bivalent heat pump instead.

What exactly do you mean by a bivalent heat pump? Parallel, alternative, monoenergetic? What does the bivalence relate to? Does it take user behavior into account?

phobos schrieb:
…Reason: On cold days, the heat pump is supported and electricity costs are supposed to be reduced as a result.

Well then, good luck! What kind of energy balance is behind that?

phobos schrieb:
…The latter is, among other things, cheaper to purchase and fully serves the purpose.

Which purpose exactly? Warming up a bit occasionally? 😉

phobos schrieb:
…I don’t want to justify myself here about why I choose this or that system or should choose one.

That’s absolutely unnecessary! 🙂 Everyone believes what someone else has sold them in some form or another. 😉 In professional circles, there is a term for this: consultation resistance!

phobos schrieb:
…In advance, I just wanted to understand how this combination works.

It produces heat, but whether it is economically reasonable overall is a completely different matter!

Best regards.