| 摘要 |
<p>The solar energy collector has a spiral fluid-circulation pipe lying on a concave plastic foam surface, with, pref. a blackened Al plate in between. The liq. is pref. forced through the spiral, from the periphery towards the centre, by a pump controlled by a bimetal thermostat exposed to the sun. The components are pref. put in a profiled Al case, under two sheets of thin, transparent plastic held sepd. by rigid plastic distance pieces.</p> |
