Experimental investigations on single slope solar still desalination system with energy storage materials and Phase change materials blended with nano particals

Abstract

A single slope solar still is a passive solar desalination device that utilizes newlinesolar energy to purify saline or brackish water, making it suitable for drinking newlineand other uses. This simple, cost-effective technology operates on the basic newlineprinciples of evaporation and condensation, harnessing the greenhouse effect newlinewithin a transparent cover. In this research study, four different experimental newlineinvestigations are planned to improve the effectiveness of the single slope solar newlinestill (SSSS) through design modifications and by adding different thermal newlineenergy storage materials (TESM) and phase change materials (PCM) added newlinewith nanoparticles. In the first study, integrating solar pond (SP) with SSSS, newlinetheoretical and experimental investigations were done, and the results were newlinecompared. Mini SP zones linked to the SS, the concentration of sodium chloride newline(NaCl) in the SP, and the angles of the interior and exterior reflecting mirrors newlineare the most critical elements affecting the SS performance. It was determined newlinethat the optimal configuration for achieving maximum efficiency was to attach newlinethe SS to the small SP lower conversion zone, utilizing 4 kg of NaCl-containing newlinewater, positioning the internal mirror at 0°, and positioning the exterior mirror newlineover the SP at 140°. A daily efficiency boost of 57.14% was attained by newlinecombining these measures. Changing the NaCl concentration in the SS could newlineincrease its performance. The integration of SP boosts the performance of the newlineSS. In the second study, CFs are placed in the absorber basin of the SSSS in newlinedifferent quantities (9, 12, 15, 18, 21, 24 and 27), and the enhancement of newlinedistillate output is measured. It is found that 18 fibers in the absorber basin newlineproduced better results as CFs enhance their productivity by improving heat newlineretention properties, thermal insulation, water distribution, and evaporation newlineefficiency. The 25% occupancy rate of fibres in the absorber basin yielded the newlinehighest output compared to 45, 35%, 20%, and 10%.