What does this research mean for the field?

A double-basin solar still with a 10 mm water depth in both basins maximizes water productivity and thermal efficiency, significantly outperforming deeper configurations and single-basin designs. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To determine how varying water depths across lower and upper basins influences distillate yield and daily thermal efficiency in a double-basin solar still.

September 3, 2026International Journal of ThermodynamicsOpen Access

Effect Of Water Basin Depth on The Thermal Performance of The Double-Basin Solar Still Under Iraqi Climatic Conditions

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Authors

İAİbrahem Ali AHA. J. Hamad AKAbdul Hadi Khalifa

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Overview

Experimental study demonstrates enhanced freshwater productivity and thermal efficiency at lower water depths in double-basin solar stills, highlighting optimal design parameters for solar...

Key Points

To determine how varying water depths across lower and upper basins influences distillate yield and daily thermal efficiency in a double-basin solar still.
Constructed a double-basin solar still with a 0.4 × 1 m lower basin and a six-compartment upper basin, alongside an identical single-basin solar still for comparative analysis.
Tested water depths ranging between 10 mm and 30 mm in both basins under ambient conditions in Baghdad, Iraq (33.3° N, 44.3° E) during October 2025.
The 10-10 mm configuration delivered the highest performance, achieving 8.75 L/m²·day and 83.24% daily thermal efficiency, which was a 37.5% yield increase and a 24% efficiency increase over the 10 mm single-basin still.
The 30-30 mm configuration yielded the lowest performance at 5.138 L/m²·day and 71.59% thermal efficiency, reflecting a 19% productivity gain and 12% efficiency gain over the 10 mm single-basin still.
Peak lower-basin glass cover temperature reached approximately 90 °C in the 10-10 mm setup, with maximum moisture contents reaching 700 g/kg dry air in the lower basin and 520 g/kg dry air in the upper basin.

Cite This Study

Ali et al. (2026) studied this question.

synapsesocial.com/papers/6a993592636c6408cfa7dde9 https://doi.org/10.5541/ijot.1959300

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September 3, 2026International Journal of ThermodynamicsOpen Access

Effect Of Water Basin Depth on The Thermal Performance of The Double-Basin Solar Still Under Iraqi Climatic Conditions

View Full Paper

Ask AI

Bookmark

Authors

İAİbrahem Ali AHA. J. Hamad AKAbdul Hadi Khalifa

Discussion

Member takes

Overview

Experimental study demonstrates enhanced freshwater productivity and thermal efficiency at lower water depths in double-basin solar stills, highlighting optimal design parameters for solar...

Key Points

To determine how varying water depths across lower and upper basins influences distillate yield and daily thermal efficiency in a double-basin solar still.
Constructed a double-basin solar still with a 0.4 × 1 m lower basin and a six-compartment upper basin, alongside an identical single-basin solar still for comparative analysis.
Tested water depths ranging between 10 mm and 30 mm in both basins under ambient conditions in Baghdad, Iraq (33.3° N, 44.3° E) during October 2025.
The 10-10 mm configuration delivered the highest performance, achieving 8.75 L/m²·day and 83.24% daily thermal efficiency, which was a 37.5% yield increase and a 24% efficiency increase over the 10 mm single-basin still.
The 30-30 mm configuration yielded the lowest performance at 5.138 L/m²·day and 71.59% thermal efficiency, reflecting a 19% productivity gain and 12% efficiency gain over the 10 mm single-basin still.
Peak lower-basin glass cover temperature reached approximately 90 °C in the 10-10 mm setup, with maximum moisture contents reaching 700 g/kg dry air in the lower basin and 520 g/kg dry air in the upper basin.

Cite This Study

Ali et al. (2026) studied this question.

synapsesocial.com/papers/6a993592636c6408cfa7dde9 https://doi.org/10.5541/ijot.1959300

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