Carbon nanotube-based fluidized bed heat transfer media for concentrating solar power applications

摘要

Withdrawing thermal energy obtained from a focused input of solar radiation can be complicated by issues associated with heat transfer media presently used for this purpose. By disposing carbon nanotubes on a fluidizable support and utilizing the carbon nanotubes as a fluidizable heat transfer medium, improved heat transfer characteristics can be realized due to the near-blackbody thermal absorption properties of the carbon nanotubes, in addition to other provided advantages. Concentrating solar power systems can include: a solar receiving structure configured to receive a focused input of solar radiation, a fluidized bed heat transfer medium within the solar receiving structure, and an energy-generating structure in thermal communication with the fluidized bed heat transfer medium. The fluidized bed heat transfer medium contains a plurality of fluidizable heat transfer particles, and the fluidizable heat transfer particles include a plurality of carbon nanotubes bonded to a plurality of fluidizable particles.