Question 1

Deeper energy wells are more expensive to drill.

Accepted Answer

If you drill fewer deep boreholes instead of many shallow ones, you can save a lot on casing pipes, trench digging, manifold chambers, setup time, etc. These costs typically far outweigh the extra drilling cost. MuoviTech has collector hose adapted for deeper boreholes.

Question 2

It doesn't matter which collector you use.

Accepted Answer

For an efficient geoenergy system, you need the best possible heat transfer. TurboCollector creates turbulent flow in the brine, leading to better heat transfer.

Question 3

Valves should be fully open for heat balance.

Accepted Answer

Balancing valves should be adjusted during commissioning. If all valves are left fully open, some boreholes will get too little flow and others too much, leading to uneven loading of the geoenergy system.

Question 4

Pressure drop calculations aren't necessary.

Accepted Answer

Knowing the pressure drop in a geoenergy system is crucial for an efficient system. If the pressure drop is higher than the pumps can handle, it leads to lower flow, colder brine and reduced COP.

Question 5

All brines are flammable.

Accepted Answer

There are alternatives to ethanol. MuoviTech sells Kilfrost GEO — a brine fluid that is non-flammable, non-toxic, has high density and becomes turbulent quickly.

Question 6

Using insulated ground pipes is expensive.

Accepted Answer

Following guidelines from Svenskt Geoenergicentrum, you can save both time and money with insulated ground pipes — less excavation is required, saving costs directly.

Myths about geoenergy