Hello!
I'll start.
Heated area 200m2 (2,153 sq ft)
KfW 55 standard
Mechanical ventilation with heat recovery
Current outdoor temperature 6°C (43°F)
Heating energy consumption including hot water 35 kWh
Electricity consumption 9 kWh
COP 3.88
I'll start.
Heated area 200m2 (2,153 sq ft)
KfW 55 standard
Mechanical ventilation with heat recovery
Current outdoor temperature 6°C (43°F)
Heating energy consumption including hot water 35 kWh
Electricity consumption 9 kWh
COP 3.88
T_im_Norden schrieb:
@Bookstar
If it consumed 13 kWh of electricity, that would mean around 50 kWh of heat output with a COP of 4.
@KingJulien
Running the pump makes sense because in winter the pump runs anyway, so distribution happens automatically, unless the ERR block the room, of course.
One reason not to use ERR.Yes, that’s what I meant. 50 kWh of heat output is far from enough to keep the house reasonably warm. You also need hot water.
Why wouldn’t that be enough? The difference between your 20 kWh with a 3.2 COP and his 13 kWh with a 4 COP isn’t that big.
Currently, my average electricity consumption since November 27th is 28 kW per day. We also have 30 cm (12 inches) of snow at the moment, and tonight it is expected to drop to minus 6°C (21°F).
Currently, my average electricity consumption since November 27th is 28 kW per day. We also have 30 cm (12 inches) of snow at the moment, and tonight it is expected to drop to minus 6°C (21°F).
D
Daniel-Sp8 Jan 2021 20:03When it’s warm, it’s warm. If he says he has a consumption of 13 kWh, then I’ll take his word for it. That would really be great.
I believe him too, but I think something is being overlooked or the heating is set too high. That would be 400 kWh in the coldest month, just roughly estimated. For a house with a basement over 140m2 (1507 ft²), that is absolutely unrealistic. But it doesn’t really matter anyway 🙂
T
T_im_Norden8 Jan 2021 20:45Why shouldn’t 50 kWh of heat be enough?
In a 150 m² (1,615 sq ft) house built according to the energy-saving regulations, I use between 28 and 60 kWh of heat depending on the outside temperature and hot water demand.
With correspondingly better insulation, even less is possible.
In a 150 m² (1,615 sq ft) house built according to the energy-saving regulations, I use between 28 and 60 kWh of heat depending on the outside temperature and hot water demand.
With correspondingly better insulation, even less is possible.
Don’t get upset.
My heat pump has been running like clockwork for the past 7 days. The outdoor temperatures were very stable, so I can’t explain its behavior yesterday, especially since the outside temperature didn’t differ from the last 7 days.
- Suddenly, starting in the morning, the temperature difference between heating cycles jumped from 7-8°C (13-14°F) to 15°C (27°F).
- After several hours of heating, the system would turn back on after about 30 minutes or so. As a result, despite the low supply temperature of 25.5°C (78°F), the indoor temperature became unbearable.
- The temperature difference during non-heating periods also increased to 7-8°C (13-14°F).
I’m really frustrated and at a loss, almost desperate, because after a week I just can’t understand how something like this can get out of control without any internal or external changes.
I have now reconnected the basement to try to reduce the temperature difference.
How can the temperature difference increase like this???
My heat pump has been running like clockwork for the past 7 days. The outdoor temperatures were very stable, so I can’t explain its behavior yesterday, especially since the outside temperature didn’t differ from the last 7 days.
- Suddenly, starting in the morning, the temperature difference between heating cycles jumped from 7-8°C (13-14°F) to 15°C (27°F).
- After several hours of heating, the system would turn back on after about 30 minutes or so. As a result, despite the low supply temperature of 25.5°C (78°F), the indoor temperature became unbearable.
- The temperature difference during non-heating periods also increased to 7-8°C (13-14°F).
I’m really frustrated and at a loss, almost desperate, because after a week I just can’t understand how something like this can get out of control without any internal or external changes.
I have now reconnected the basement to try to reduce the temperature difference.
How can the temperature difference increase like this???
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