Performance evaluation of a new stepped solar still under the desert climatic conditions

[Display omitted] •A new stepped solar still is proposed to improve the productivity of the conventional solar still.•A Multi-Tray Evaporator is integrated inside the still and acts as an additional evaporation area.•The maximum daily productivity of the proposed stepped solar still is about 5.82 kg...

Full description

Saved in:
Bibliographic Details
Published in:Energy conversion and management 2018-09, Vol.171, p.1749-1760
Main Authors: Saadi, Zine, Rahmani, Ahmed, Lachtar, Salah, Soualmi, Hamou
Format: Article
Language:English
Subjects:
Climatic conditions
Comparative studies
Desalination
Deserts
Design of experiments
Distillation apparatus
Distilled water
Evaporation
Evaporation area
Experimental study
Multi-tray evaporator
Performance evaluation
Productivity
Solar distillation
Solar energy
Stepped solar still
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:[Display omitted] •A new stepped solar still is proposed to improve the productivity of the conventional solar still.•A Multi-Tray Evaporator is integrated inside the still and acts as an additional evaporation area.•The maximum daily productivity of the proposed stepped solar still is about 5.82 kg/m2.•The daily production of the modified solar still could be increased to104.73% compared to the CSS.•Maximum daily efficiency of conventional and modified solar stills is 44.19% and 55.81%, respectively. This paper presents a new stepped solar still proposed to improve the daily productivity of the conventional basin type solar still (CSS). An internal Multi-Tray Evaporator (MTE) was integrated against the still rear-wall to act as an additional evaporation area. The MTE's effect on the still performances has been evaluated through experimental tests under different meteorological conditions in the region of Adrar-Algeria. The still productivity improvement is demonstrated through a comparative study between the proposed solar still and the conventional still. The experimental data show that the productivity of the proposed stepped solar still is higher than that for conventional still by about 47.18–104.73%. It was found that the estimated cost of distilled water and the payback period, for the stepped solar still are 0.01 $/kg and 70 days, respectively. While, for the simple solar still, they are estimated at 0.0145 $/kg and 100 days.
ISSN:0196-8904
1879-2227
DOI:10.1016/j.enconman.2018.06.114