print ]Ground-to-water heat pumps
Ground-to-water heat pump draws heat either from deep bores or from a sub-surface ground collector. The unit is placed inside a house and connected with the ground manifold with 2 pipes. Its main advantage is a stable output and COP even in fierce frost. It can be coupled with an EcoEl thermal store/el. boiler or with a traditional accumulation tank of PS line and RBC HP storage water heaters. Heating control and communication with heat pumps is done by either external EcoLogic controller, or by IR 12 TC.
Heat pumps with ground collector
The sub-surface ground collector consist of a loop of pipes buried 1.2m below the surface. The soil needs to be removed first and when the loop is laid, the soil is returned to its place. The other method is digging trenches where individual loops are laid in a similar method to burying e.g. electric cables. The heat pump itself is located inside the building, being connected to the ground collector with 2 pipes. Its connection to an accumulation tank and a heating system is the same as that of an air-coupled heat pump.
Advantages of heat pumps with ground collector
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Drawbacks of heat pumps with ground collector
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Heat pumps with deep bore holes
In order to gain heat from deep bores, one or more boreholes need to be drilled (70-150 m deep). Their number and depth depend on the heating output of the installed heat pump and on the building to be heated. As there is a risk of influencing groundwater, it is necessary to have a geological survey performed and obtain a permission for the boreholes. The heat pump itself is located inside the building and connects to the borehole with 2 pipes. Its connection to an accumulation tank and a heating system is the same as that of an air-coupled heat pump.
Advantages of heat pumps with deep bore holes
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Drawbacks of heat pumps with deep bore holes
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