| 摘要 |
A prefabricated wall is constructed of pre-cast concrete in such a way as to have embedded therein (1) a plurality of heat-accumulator elements and (2) channels adapted to receive, after installation of the prefabricated wall element, suitable pipes and plumbing connectors for the conveyance of heated water. Each heat-accumulator element is substantially filled with water prior to being embedded in the concrete of the wall element. Each heat accumulator element is positioned so that at least one channel passes close thereto, so that heat flows from the heated water to the water in the heat accumulator element through membranes which separate the heated water from the water in the heat accumulator element. <IMAGE>
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