| 摘要 |
<p>A cavity receiver having an aperture through which concentrated solar radiation enters the cavity. Holes are provided in the bottom wall of the receiver through which cold air, which enters the cavity through the aperture, can be withdrawn by an aspirator. The outlet of the aspirator can exhaust the cold air to the atmosphere, or reintroduce the air into the cavity through holes adjacent to the aperture. Holes can also be provided in the top wall of the receiver, and an aspirator used to withdraw air from the cavity through the top wall holes and reintroduce it into the cavity through the bottom wall holes.</p> |
