Investigation of the factors influencing the efficiency of a solar still combined with a solar collector

Figures & data

Fig. 1. The flowchart of the desalination plant.

Fig. 2. General view of the solar evaporation system designed for brine.

Fig. 3. Cross section of the solar still designed (units expressed in mm).

Table 1 Factorial experimental design of the conditions tested

Run order	Basin heated	Cover	Mirror	Extractor	Paint
1	−1	−1	−1	1	−1
2	−1	1	−1	−1	−1
3	1	−1	−1	−1	−1
4	1	1	1	−1	1
5	1	1	1	1	1
6	1	−1	1	−1	1
7	1	1	−1	−1	1
8	−1	−1	1	−1	−1
9	−1	1	1	1	−1
10	−1	1	−1	1	1
11	1	−1	1	1	−1
12	−1	1	1	−1	1
13	−1	−1	1	1	1
14	1	−1	−1	1	1
15	1	1	−1	1	−1
16	−1	−1	−1	−1	−1

Fig. 4. Pareto chart of the effects (α = 0.05).

Fig. 5. Main effect plot for productivity.

Fig. 6. Productivity and test.

Fig. 7. Differences between the brine samples inside and outside the solar still: (a) Temperatures and (b) Masses.

Fig. 8. Incident radiation received by the solar still during the mass reduction and temperature increase in the brine sample.

Fig. 9. Relationship between the solar energy accumulated and (a) the mass of the brine in the solar still and (b) incident radiation.