| Preheating for the air before the heat exchanger
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The systems for using the heat of the earth are here combined with an airing system. The air from outside is warmed up before the heat exchanger by the heat of the earth.
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| drilling machine for deep drills instruments
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Nordmeyer drilling machine with 5,8 kN hydraulic forward push. Photo from the instrumens of the self propelling earth drilling machine.
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| Deep drill for heat of the earth
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This 8 tons heavy drilling machine drills holes for the usage of the heat of the earth. In average, 30 litre Diesel per hour consumed and 20m deep drilled.
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| Heat of the earth tube
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previously, a heat pump took only heat from the previously and never gave heat. Cooling the photovoltaic constrains to store the excess heat in the garden.
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| Preheating for the airing
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When there is already a depp drilling for the heat pump, it's possbile to preheat the air for the air to air heat exchanger with this water to air heat exchanger.
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