04-senger et al. _2011_.pdf
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Senger et al. (2011) designed and fabricated a single basin wick type solar desalination
(SBWSD). They carried out the testing at different inclinations for load and no load conditions
in winter and summer season.
The setup was designed and fabricated with corrugated galvanized iron sheet of 1 m2 as
absorber in between the wick strip. Jute was used as wick material, which absorbs the droplets
of water from a perforated pipe that provide continuous supply of water to the still. Water from
the pipe was carried by the work material along its length. Wick material was laid down on the
absorber with sufficient open area for exposing the black side of corrugated absorber as shown
in Fig. 1. In no load test, the SBWSD was evaluated without water and they studied the thermal
profile inside the heating chamber. In load test, the SBWSD was tested with water as pounding,
on wick and at various angle adjustments.
In no load test in winter season, maximum inside temperature was 91°C, at 1pm when
solar intensity was 503 W/m2 ambient temperatures was 31°C and outside relative humidity
was 45.6%. The corresponding data for summer season are reported to be 94°C inside
temperature at 2 PM when the intensity was 618 W/m2; ambient temperature was 36.5°C and
relative humidity of 34.5%. The performance of SBWSD for load and no load condition are
shown in Fig 3 and 4. The performance of SBWSD at various angles with wick material is
presented in Table 2. They calculated the efficiency of SBWSD to be 47.14% in winter and
56.29% in summer season, which was greater than the bare collector. The angle for maximum
efficiency was found to be 10° in summer and 40° in winter. The benefit cost ratio and payback
period are reported to be 1.7 and 6 months, respectively.
Fig. 1. Constructional detail of SBWSD (Senger et al. (2011)).
Fig. 2. Performance of SBWSD no load tests in winter (Senger et al. (2011)).
Fig. 3. Performance of SBWSD no load tests in summer (Senger et al. (2011)).
Table 1 Performance of SBWSD at various angles with wick material (Senger et al. (2011)).