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

I think a hysteresis of 2 would currently be significantly better than 1.5, wouldn’t it?

Used 20 kWh yesterday, average temperature was only minus 1.8°C (28.8°F)

Bookstar schrieb:

I think a hysteresis of 2 would be clearly better than 1.5 right now, wouldn’t it?

Used 20 kWh yesterday, average temperature was only minus 1.8°C (28.8°F)

More efficient for sure, but I want the heat pump to start running when the sun is shining. It doesn’t help me if it kicks in at 5 p.m. or midnight when the solar panels aren’t producing anything.

Since February 18th, I haven’t drawn more than 20 kWh from the grid. But starting the day after tomorrow, that will probably end.

@Bookstar How often and for how long has your heat pump been running?

And we already set a 2K hysteresis a few weeks ago.

Ours turned off yesterday at 8:00 and only came back on at 18:00.

@Zaba12 try using a day boost.

For photovoltaic systems, I would also recommend a daytime boost. Set hot water blocking times so that hot water is produced during the first heating cycle around midday.

tomtom79 schrieb:

@Bookstar How often and how long has your heat pump been running?

And we already set a 2K (3.6°F) hysteresis a few weeks ago.

Ours turned off yesterday at 8:00 AM and only came back on at 6:00 PM.

@Zaba12 you should work with a day boost.

It turned on three times, I think each time for about 3 hours.

How long does a single storage charge from your photovoltaic system usually last? We have a 190-liter (50-gallon) tank with a hot water temperature of 46°C (115°F). I’m still experimenting with the charging times related to the photovoltaic system. The problem is that if two people shower one after the other, the water already feels noticeably cooler at the second shower curtain, especially if the last storage charge was 4-5 hours ago.

Currently, I heat the tank with hot water in the morning, at midday, and in the evening, which I’d like to avoid. The circulation pump runs only 5-10 minutes in the morning.

What is the best way to optimize the hot water system for use with photovoltaic energy?