FIG. 4.
Regional effect on solar energy storage and solar disinfection due to the elevation and azimuth angles of solar radiation at specific geographic locations: (a) Average outlet temperatures at the outlet of the SOAP channel under the climate conditions of Iquique. (b) Corresponding outlet disinfection rate of E. coli with flow rates ranging from 1.0 × 10−7 to 8.0 × 10−7 kg/s. (c) Corresponding outlet disinfection rate of E. faecium with flow rates ranging from 1.0 × 10−9 to 2.0 × 10−7 kg/s. (d) Average outlet temperatures at the outlet of SOAP channel under the climate conditions of Phoenix. (e) Corresponding outlet disinfection rate of E. coli with flow rates ranging from 1.0 × 10−6 to 1.6 × 10−6 kg/s. (f) Corresponding outlet disinfection rate of E. faecium with flow rates ranging from 4.0 × 10−7 to 1.2 × 10−6 kg/s. A translucent band represents 95% confidence interval.