Comparative Study of Simple Passive Solar Still with and without Multilayer Absorber Plate: An Experimental Approach

Abstract

This Paper presents a new approach to enhance the productivity of a simple Passive Solar Still by
introducing additional Multilayer absorber Plate at the basin of Solar Still. Simple Passive Solar Still with
Multilayer Absorber Plate is fabricated and tested at Mehsana (Latitude: 23.60 N and Longitude: 72.400
E)
,Gujarat,India.The experiments were conducted with varying water depth of 0.5 cm, 1 cm, 1.5 cm,2 cm with and
without Multilayer Absorber Plate. For both case Per Day Productivity decreases as water depth increases and
Overnight Productivity increases as water depth increases. For the same basin area Per Day Productivity and
Overnight Productivity of Multilayer Absorber Solar Still for 0.5 cm water depth increases by 3.9% and 28.94%
for 1 cm water depth increases by 4.9% and 29.06% for 1.5 cm water depth increases by 5% and 40% for 2 cm
water depth increases by 5.2% and 40.38% respectively compare to Solar Still without Multilayer Absorber Plate
for typical summer days for same water depth.