Abstract
Recent developments focus on the use of fluidised beds as alternative heat transfer and storage fluids in solar energy applications due to the high dispersion level and intensive mixing of both phases that ideally leads to a uniformity of the material in the bed. This is an alternative heat transfer fluid (HTF) for concentrating solar power (CSP) plants. It makes use of dense gas-particle suspensions -DPS- in tubes as HTF; these tubes set in a bundle constitute the solar absorber (receiver), placed at the top of a central receiver CSP system