Receptor solar con fluido caloportador gaseoso

The invention relates to a solar receiver with gaseous heat-transfer fluid, of the type that is arranged in a cavity of a solar tower. The receiver is formed from at least two connected panels, where each panel comprises at least two passages, a passage being an assembly of tubes wherein the gas circulates in the same direction, and where, inside the first panel, the number of tubes of each passage is reduced by between 5 and 10% compared to the previous passage, and where the following panel, connected in series with the first panel, starts with a first passage which contains the same number of tubes as the last passage of the first panel but where the diameter of the tubes is between 5 and 10% less compared to the tubes of the last passage of the first panel. In the subsequent passages, the diameter of the tube is maintained constant along the panel, and the number of tubes of each passage is reduced by between 5 and 10% compared to the previous passage in said panel.