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

Created on: 29 Sep 2020 11:06
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Bookstar
Original post
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
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Bookstar10 Feb 2021 18:00
#571
teh_M schrieb:

Do you have a mechanical ventilation system with heat recovery? Could it be exchanging too much air? I turned mine down when it’s below 0°C (32°F).

It runs with a heat exchanger for 160m2 (1720 sq ft). Level 1 setting.

Otherwise, the layout is a standard rectangle with no special features.
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halmi10 Feb 2021 20:18
#572
Consumed about 28 kWh in the last 24 hours. Currently, it is just below -10°C (14°F), with an average temperature of -7.5°C (18.5°F).

Temperatures: Supply 30°C (86°F), Return 26.2°C (79.2°F), Hot water actual 46.8°C (116.2°F), Outside temperature -10.2°C (13.6°F)
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Zaba1210 Feb 2021 20:38
#573
Today there have been 2 heating cycles again. The next heating cycle is estimated to start around 1 o’clock.

The total house consumption will be around 26 kWh.
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Bookstar10 Feb 2021 21:54
#574
halmi schrieb:

Used about 28 kWh in the last 24 hours. Currently just over -10°C (14°F), average temperature -7.5°C (18.5°F).

At my place, I had 32°C (90°F) or 28°C (82°F). So my heating curve seems to be a bit steeper. Let’s see how the temperatures look tomorrow morning. I think your energy consumption is really good.

How big is your house?
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Bookstar10 Feb 2021 22:16
#575
Intermediate result after 12 hours of heating operation:
90 kWh of heat, 22 kWh of electricity.

The real cold hours are still to come :O
tomtom7911 Feb 2021 02:37
#576
Phew, you have a modulating system! In that case, it would make sense to increase the operating time, first by setting the hysteresis back to 2°C (36°F) and then lowering the heating curve; this way, it should run longer.