Underfloor heating air-water heat pump. House too warm when the sun shines

  • Erstellt am 2019-12-04 14:18:21

Lumpi_LE

2020-01-22 14:11:42
  • #1
One m³ is about 10 kWh. With gas, it is still interesting what the [Solarthermieanlage] contributes - this is simply not accounted for in the displayed consumption even though it is there.
 

boxandroof

2020-01-22 14:22:51
  • #2
My house without a basement required on average about 40kWh of heat/day in frost-free northern regions in January, including 10% hot water share.

That would be approximately:
- 4m³/day gas at 100% efficiency
- 10kWh/day electricity at a coefficient of performance of 4
- 4 liters of oil at 100% efficiency
 

pffreestyler

2020-01-22 14:27:46
  • #3
oh yes, I actually wouldn’t have thought of that in summer how many sqm and what temperature inside the house?
 

boxandroof

2020-01-22 14:38:35
  • #4

I actually just wanted to contribute something about the energy sources. These comparisons don’t bring much.

It is about 150m² living space and approximately 21° room temperature on average +/- 1-2° depending on the room and usage. On cold days about a year ago with outside temperatures down to -8°, it was 70kWh/day. A very similar house a few kilometers away has almost identical monthly consumption according to the database as mine.
 

tomtom79

2020-01-22 18:50:30
  • #5


13 kW? For 180m2 plus basement? And then nearly at 1000 meters altitude? What kind of heat pump is that, ring trench collector or brine?

Could you also add your type of heat pump for comparison?
 

tomtom79

2020-01-22 19:02:28
  • #6
From 17.01.2020 at 6 pm to 22.01.2020 at 7 pm just read off.

122 kW electricity read on the meter

So 25 kW per day

And 378 kW heat quantity.

22.5 degrees room temperature

About 240 m2 heating surface

Controlled residential ventilation with wgt

Air-water heat pump from Buderus

480Nn

Domestic hot water at 49 degrees with 6 degree hysteresis.

Heating curve at 25.5 22 0
 

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