ᐅ Air-to-Water Heat Pump: Current Consumption and Data

Daniel-Sp schrieb:

What is the duration of each heating cycle, and how many heating cycles are there?
Why is the living room, as the main living area, restricted?
There is not enough information to assess this.

If I didn’t restrict the flow in the living room, it would get too warm. I would then have to adjust the heat pump to prevent overheating, but that would cause the other rooms not to warm up enough.
Yesterday there were only 2 heating cycles within 24 hours, each about 10 hours.

halmi schrieb:

There are no free kWh. Have you ever calculated how much 1 kWh from your storage costs you? You definitely already have your Renewable Energy Act feed-in tariff for every kWh produced; no one can take that away from you.

Regarding the 4 K hysteresis, for us it would either be freezing cold or completely overheated. In any new build, comfort significantly suffers with anything over 2 K.

I would choose a mix of efficiency, reasonable system operation, and comfort. For us, comfort is the top priority.

Let’s see—the 4 K was only tested by Sonme, and temperature-wise it worked wonderfully at least. Whether it will hold up during the next 10 days with little sun remains to be seen. Efficiency is a different matter. So is the storage. 🙂 You misunderstood the “free kWh” issue, and I didn’t explain it well. What I meant is that I can’t lose the feed-in tariff because I can either feed in or use the electricity myself. Many include the missed feed-in tariff as a cost for self-consumption, but I don’t, because it’s not lost to me—I have consumed it.

With 4K, you can no longer control a heat pump, which is very inconvenient and does not meet the WAF at all.

Zaba12 schrieb:

Let’s see, the 4 kW system was only tested at Sonme and it worked wonderfully in terms of temperature. Whether it will manage over the next 10 days with little sunlight remains to be seen. Efficiency is another matter. So is the storage 🙂. You misunderstood the part about the free kWh, and I didn’t explain it well. What I meant to say is that I can’t lose the feed-in tariff because I either feed in or consume the electricity. Many people include the missed feed-in tariff in their self-consumption calculation, but I don’t, because I don’t miss anything since I used the electricity myself.

Every kWh you consume yourself costs you the loss of the feed-in tariff.

By the way, the 0.04 cents figure is incorrect anyway because it doesn’t take production costs into account. In the case of storage, it also ignores its costs. When these are included, a kWh from the storage costs 40 cents or more.

Malz1902 schrieb:

If I don’t reduce the flow in the living room, it gets too warm. Then I have to adjust the heat pump to prevent overheating, but this means the other rooms don’t get warm enough.
Yesterday, there were only 2 heating cycles within 24 hours, each about 10 hours long.

If all the other rooms are actually open, the heating engineer/designer has messed up the underfloor heating hydraulics. With better hydraulics, a lower heating curve would probably have been sufficient.
Just a rough guess...

guckuck2 schrieb:

The kWh you use yourself costs you the loss of the feed-in tariff.

Furthermore, the 0.04 cents are incorrect anyway because they do not take generation costs into account. In the case of a storage system, its costs are also not considered. When you factor that in, a kWh from the storage costs 40 cents or more.

And the feed-in tariff costs the loss of the self-consumed kWh.
That’s right, additionally there are 7.2 cents generation costs without storage.
Is there actually a calculator that reasonably includes all aspects?