| 摘要 |
PCT No. PCT/FI93/00257 Sec. 371 Date Feb. 14, 1995 Sec. 102(e) Date Feb. 14, 1995 PCT Filed Jun. 14, 1993 PCT Pub. No. WO93/25855 PCT Pub. Date Dec. 23, 1993A solar thermal cell must include such a means of stopping solar radiation that no radiation is reemitted. Known art black, heat-binding absorbing surfaces are of this kind. The collecting of solar radiation energy should take place using a liquid jacket covering the entire southfacing pane of the roof, the said liquid jacket being implemented by means of a relatively inexpensive, well-sealed structure that should also be capable of withstanding strains such as that caused by snow. Underneath solar thermal cell's intermediate spaces (5) for the heatcollecting liquid, there is a dark-surfaced mineral wool board (1) stopping solar radiation. The intermediate space (5) may be located between two light-admitting membranes (2 and 3) and overlying there may be a light-admitting sheet of corrugated fiberglass (4). Between the membranes (2 and 3) or equivalent there may be ridges (6) forming intermediate spaces (5) between the mebranes (2 and 3). The intermediate spaces (5) may be arranged in tiers; e.g. three tiers with uppermost tier being a heatinsulating air space and the lowermost tier containing a mineral wool board (1).
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