Fig. 5: The evaporation and salt resistance performance of asymmetric tapered eight-stage solar still. | Nature Communications

Fig. 5: The evaporation and salt resistance performance of asymmetric tapered eight-stage solar still.

From: Asymmetric tapered multistage solar still with optimized mass transfer equilibrium for ultrahigh water production

Fig. 5

a The photograph and water production of outdoor experiment of eight-stage device. b The salts dissolution process by setting water level difference. c The water and ion transport path of the device with water level difference. d The ion concentration before and after distillation. e The conductivity of the collected water at different time intervals. f The durability of the eight-stage device. A continuous 21-day (3-week) test under 1 kW·m−2 solar intensity using 3.1 wt% natural seawater demonstrated stable performance, with the device consistently maintaining the water production of 4.13–4.33 L·m−2·h−1. Error bars in e represent the s.d. (n = 3) and data are presented as mean values ± s.d.

Back to article page