Developing sustainable water transportation technology is essential for solving water shortage problems. In this study, we proposed a sustainable high-pressure light-driven water pump that used a spiral tube structure (where light hit one side and shadowed the other) with a B\"{u}ttiker--Landauer (BL) ratchet. Moreover, we examined the performance of this water pump. By using a polyurethane tube with a diameter of 2.5 mm and length of 5 m, we demonstrated that the light-driven BL pump lifted water from a water source against the force of gravity, transported it horizontally along the spiral tube, and removed it from the tube against the surface tension. In particular, by the height scale-up design, we observed $\sim$800 times larger actual pressure difference ($\Delta P \sim 40$ Pa) than the previous light-driven BL pump along with the pumping flow velocity up to 2.4 mm/s. In addition,by proposing a model that considers the effect of the transportation of heat energyfrom the hot region to the cold region, we explain the experimentally observed self-adjustment phenomenon for a flow velocity. Since our pump can work under sunlightwithout using electricity or fossil fuels, it is more sustainable than other pumps. Our findings should contribute to practical sustainable water transportation.
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