Different types of energy sources |
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Rock heat pump advantages |
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A large plot is not necessary. |
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The bore in the rock has an even temperature all year round. |
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Small impact on the plot. |
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A rock heat pump uses the solar energy stored in the rock shelf. Energy that can then be used to heat your house and your tap water. Retrieving energy from the rock shelf is the most common solution. Pipes are lowered into a deep (100–150 metres) bore hole in the rock.
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Ground heat pump advantages |
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No drilling required. |
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The ground loop has an even temperature all year round. |
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Lower installation cost. |
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The ground heat pump uses a pipe buried in the plot to gather the solar energy stored in the surface of the ground. If the rock shelf is deep, or you do not wish to drill on your property for other reasons, you can choose a ground heat pump solution.
A long hose is buried about a metre below ground. The hose is laid in loops and the energy is recovered from the ground in the same way as with rock heat.
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Water heat pump advantages |
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No drilling required. |
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The loop in the lake has an even temperature all year round. |
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Small impact on the plot. |
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Water heat pumps use a hose on the lake floor to recover energy from the water. The hose is laid on the bottom of the lake or river and anchored using weights. The principle is the same as with ground heat.
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Air heat pump advantages |
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Lower investment cost. |
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There is usually no requirement to notify the council environmental health department. |
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No impact on the ground. |
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An air heat pump avoids the need to drill or dig. Instead, you gather the heat from the surrounding air using an air module. This is located outside the house and works with a heat pump inside the house.
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