| 摘要 |
A concentric solar collector comprises a round disk, an insulating substrate moulded with plurality of concentric parabolic troughs, a reflective plate formed as plurality of concentric parabolic troughs, a coiled absorber pipe, plurality of vertical heat-transfer plates each connecting the coiled absorber pipe and the parabolic trough positioned thereunder and a transparent top envelope. Such a collector can be used to efficiently absorb the solar heat either from direct straight sunlight or inclined sunlight.
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