Water Desalination in Solar Earth Stills: A Numerical Study

R. Avissar, Y. Mahrer

Research output: Contribution to journalArticlepeer-review

Abstract

To simulate water desalination in solar earth stills, we developed a numerical one‐dimensional model, which considers four layers: cover, soil, enclosed, and external air. The soil layer is divided into thin homogeneous sublayers, whose thermal and hydraulic properties are computed, during the simulation, by taking into account their temperature and humidity. Given adequate photometric properties, any covering material can be simulated. The model was experimentally verified and applied to two different climatological regions in Israel, examining the influence of water table depth on the amount of collected fresh water in two different types of solar earth stills. The model is able to predict accurately the amount of drinking water collected in a solar earth still. This method of water desalination is applicable in regions where the water table is near the soil surface.

Original languageEnglish (US)
Pages (from-to)1067-1075
Number of pages9
JournalWater Resources Research
Volume22
Issue number7
DOIs
StatePublished - Jul 1986
Externally publishedYes

ASJC Scopus subject areas

  • Water Science and Technology

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