Ämne: Which brand of Bergvärmepump and what is the usual cost?

[Roland]

3000 L oil corresponds to about 23 000 kWh assuming 75% efficiency. That is the same figure as for my house. I have a pump which today would be called a 6 kW pump. If you do not intend to extend the house I would say that the 8 kW model is sufficient.

Note that pumps 1 and 2 are inverter pumps, that is the reason why the prices are higher. Both pumps works in the range 3-12 kW. Below 3 kW they are on/off pumps.

Where is the house located?

[S_M]

Hi Roland,

The house is located in Ekerö- Stockholm.

And I think the Geo 508 is as well an inverter pump from 2-8kw.

Thanks!

[Carl N]

Hi!
I think that you should go for number 1 or 2.
8 KW model can be OK if it is an on/off but as you notice it is an inverter.
#4 could be OK if there is enough water in the system, to this one i should recommend a volume water tank in series with the flow to the heat system.
For an on/off machine the recommendation is to have at least 20-25 liters water per kW output effect, so a 200 liters tank would be OK.

[Roland]

And I think the Geo 508 is as well an inverter pump from 2-8kw.

Correct, when I read 8 kW I assumed it was an on/off and did not check.
 
Some have had problems to understand and set the parameters in the regulating system in Nibe inverter pumps. They tend to work as on/off pumps even when the heat demand is higher than the minimum power.   

 

[Daniel Sjöblom]

Regarding setting the right parameters, no matter who makes the product this is 2019 and neither the installer or the customer should be responsible for setting the perfect settings.

This is not a jab at Nibe or any one perticular, but today with first start guides etc asking for the current system setup and setting the best defaults is a no brainer really, unless the best defaults are something you use your customer base as a test bed to work them out on.

[linnellaa]

NIBE is a Swedish company known for producing high-quality heat pumps. They offer a range of models designed for different heating needs and house sizes.
Drive Mad

[Börje__]

1.

The Inverter / On-Off debate is still raging hard. According to KTH and a study they made there are not any difference in performance on an inverter heat pump from a traditional one. Why was not something the study dived into, but what one gets in lower consumption from not having to start and stop, is probably lost from electric motors having less efficiency when running with an inverter infront of it, especially in lower frequencies. That said, i have lots and lots of logs from different heat pumps with inverters that stops, rest for a while and then restarts. Right now i suspect the software is not as good at predicting energy needs as it should be, and more or less just ramp up, meet demand and stops, and then redo that circle again and again.

IVT Greenline HE and Bosch 5000 is the choice if you want solid and proven stability and durability. The verdict for inverter pumps is still out there but i suspect they will fare pretty well.

2.

Preferably you would take the of an installator for sizing of both the bore hole and the pump. If not you can read the mfgs own documentation that specifies recommended depths. The size of the pump itself is mostly a calculation between capital and the amount of reduce on the energy bill.

Tack AI att jag hittade denna tråd och signatur!
Finns KTH studien och någon som läst den?