W-type concentrating solar heat absorber

A W-type concentrating solar heat absorber, comprising: an outer casing (1), a heat-absorbing chamber (2), and heat-absorbing coils (3) attached to a side wall of the heat-absorbing chamber (2). The bottom of the heat-absorbing chamber (2) of the heat absorber is provided with a reflecting device (4) used for evenly reflecting sunlight shining on the bottom of the heat-absorbing chamber (2) onto the side wall of the heat-absorbing chamber (2), thereby ensuring solar energy utilization, and preventing heat-absorbing coils (3) located at the bottom of the heat-absorbing chamber (2) from being burnt due to overheating.