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

Created on: 29 Sep 2020 11:06
B
Bookstar
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
Z
Zaba12
6 Feb 2021 21:29
halmi schrieb:

I also think the offer is quite good.

Next week, the temperatures will get interesting again here.
I also thought I wasn’t seeing correctly. Seven days of continuous cold. This is the first time I’m consciously tracking it.
Ötzi Ötztaler
6 Feb 2021 21:35
Is a proper load test being conducted for the power grids, considering that with many poorly adjusted air-to-water heat pumps, the electric heating element suddenly takes over? There has been a massive increase in heat pump installations in recent years. If, on top of that, the photovoltaic systems are covered by snow and a few high-voltage transmission lines going north fail due to ice storms and broken poles, things become interesting. In such cases, the utility company outage might then last a few hours longer per day...
H
halmi
6 Feb 2021 21:48
Luckily, I only have one meter, so there’s no need for an energy utility company (EVU) 🙂
S
Stefan2.84
8 Feb 2021 07:35
Hello everyone, I have been following this topic closely because I find it very interesting. However, I haven’t dared to start with it myself yet. I would like to ask two quick questions to better understand the system.

1. Question: When it was colder in January, I had about 1-5 compressor starts per day. In the last few days, with milder temperatures, I am seeing 10-20 compressor starts per day. How is this connected?

2. Question: The tubes (top meters?) are almost completely black and barely readable. The system was installed in November 2020. Is this normal?

Since mid-January, I have been recording all kinds of data, such as electricity consumption and heat output.

Thank you

Close-up of orange cables with red caps in a dusty metal system.
H
halmi
8 Feb 2021 08:18
What values did you record?

Point 1 is probably due to an oversized heat pump combined with suboptimal settings. This will only improve once you become more comfortable adjusting the system.

I would raise a complaint about point 2. It’s likely that untreated water was used, causing something (expansion tank, towel radiator, etc.) to corrode continuously.
T
T_im_Norden
8 Feb 2021 08:22
Create a new thread with your questions and data.
I have already posted what is required.