The invention discloses a TiC-
TiN nanometer solar absorbent for a
solar water heater. The TiC-
TiN nanometer solar absorbent for the
solar water heater is prepared from medium water, a pH conditioning agent, nanometer
powder and a dispersing agent. The
solar water heater comprises a transparent vacuum glass box, a
heat conducting water pipe and a feeding opening, wherein the transparent vacuum glass box is used for containing the prepared solar absorbent. Prepared solar absorbent
slurry is fed into the glass box, nanometer particles dispersed in water efficiently absorb
sunlight through the surface effect of the nanometer particles in the manner that the
sunlight penetrating the vacuum glass box to illuminate the
slurry, and then
water temperature is rapidly raised. The TiC-
TiN nanometer solar absorbent for the solar
water heater solves the problems that in the prior art, inefficient wave-absorbing interval positions exist between vacuum tubes, the surfaces of inner tubes of the vacuum tubes are provided with a selective wave-absorbing material through vapor
evaporation, the
solar absorption rate is low, the solar
utilization rate is low, the vapor
evaporation technology is complicated, the cost is high, heat dissipation is rapid, and the heat insulation effect is poor; and the TiC-TiN nanometer solar absorbent for the solar
water heater achieves efficient absorption and utilization of
solar energy (the
solar absorption rate reaches 85%-95%), the implementation process is simplified, and the cost is low.