Engineering#15 in January 2026 EditionModular passive solar distillation units with integrated phase change heat storage for off-grid drinking water
Ahmed Mansoor, Rajiv Sharma, Francesca Conti et al.
OPENSTEM EDITORIAL SUMMARY
What the research examines
Mechanical engineers design a stepped solar still incorporating bio-based paraffin phase change materials beneath hydrophilic carbon fiber evaporators, producing 8.2 L/m² of clean drinking water per day from hypersaline groundwater under natural 24-hour cycles.
Why it may matter
Delivers zero-maintenance, zero-emission drinking water production for isolated rural and humanitarian refugee encampments.
What to examine carefully
Salt crystallization on the evaporator surface requires daily flushing to prevent wicked capillary pore choking.
Editorial scope: This is a concise, independently written introduction based on the publisher information, not a full systematic review or independent replication. It must not replace reading the original methods, limitations and conclusions.
STUDENT RESEARCH LENS · ORIGINAL OPENSTEM NOTES
Try a small, reproducible follow-up
Model transient thermal heat storage and latent heat release in paraffin phase change materials using the enthalpy method.
Questions to investigate
- How does nocturnal latent heat release sustain continuous water evaporation throughout the night?
- What chemical purity parameters (total dissolved solids, heavy metals) were certified for the distilled water output?
These are independently proposed educational investigations, not activities that the original research authors claim to have completed.
Publication & researcher information
JournalApplied Energy
Published online2026-01-26
Authors (selected)Ahmed Mansoor, Rajiv Sharma, Francesca Conti et al.
University / laboratoryIndian Institute of Science (IISc)
CountryIndia
Multi-author research may involve universities in several countries. Unverified institutions and contact addresses are not inferred from authors' names.