| 摘要 |
The invention relates to a device for heating a vessel for water with the intervention of a heat-transfer medium, comprising a solar collector, a circulation system for the heat-transfer medium, which exchanges heat with the solar collector and the vessel, and a circulation pump, the vessel being a double-walled vessel and being located virtually horizontally beneath the solar collector, and the space between the walls of the vessel forming part of the circulation system, and the circulation system being only partially filled with heat- transfer medium.
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