In this study, the performance of single slope solar still combined with enhanced condenser and integrated
with
parabolic trough solar collector (PTC), is assessed based on productivity, energy, exergy,
exergoeconomic, and enviroeconomic methodologies. Experiments are conducted using various saline water media inside a basin exposed to the hot weather conditions of Sohag city in Upper Egypt. Several solar still configurations are tested: conventional solar still (CSS), modified solar still (MSS) using aluminum heat sink as enhanced condenser (HSC), modified solar still incorporated with PTC (MSS + PTC), modified solar still comprising sand as a porous media inside the basin (MSS + SD), and modified solar
still comprising sand inside the basin and incorporated with PTC (MSS + SD + PTC). The experimental findings revealed that the MSS + SD + PTC achieved the highest freshwater productivity of 4.65 L/m in winter and 9.75 L/m2 in summer, leading to an improvement of around 113 % in winter and 146 % in summer compared with the CSS system. The highest increase in energy and exergy output per year is obtained
in the case of MSS + SD + PTC at 139 % and 245 %, respectively. Incorporation of PTC into the MSS system for all studied water media is found promising in terms of energy payback time, cost, and freshwater yield compared with MSS without PTC. The exergoeconomic and environmental parameters of the active systems are found more effective compared with those of the passive systems.