Heat pump in combination with photovoltaic system

  • Erstellt am 2025-03-14 10:07:18

Nida35a

2025-03-14 23:07:13
  • #1
We have a heat pump and photovoltaic system with storage. We try to shift the consumption to daytime. Night setback by 3 degrees, hot water overheated to 60 degrees at 4 p.m., otherwise automatic operation. However, our house only loses about 1 degree overnight. Whether I input, for example, 10 kWh of heating power during the day or at night has no effect. The underfloor heating is too sluggish for that.
 

hausbauen101

2025-03-16 18:57:56
  • #2
what kind of insulation does your house have that it loses 1 degree at night?
 

wiltshire

2025-03-16 19:23:14
  • #3
With the temperature increase in the hot water storage tank from, for example, 50 to 60 degrees, the heat pump no longer has major advantages. The heating element avoids additional switching operations of the heat pump. It's not entirely stupid.
 

Nida35a

2025-03-16 20:10:49
  • #4
better than KfW 40, but only valid down to 0 degrees, at -10 to -20 degrees the heat pump runs with 0.7 to 1.5 kWh electricity consumption continuously and easily drains the battery, e.g. today with 0 degrees at night and we are on vacation
 

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