Abstract

Water scarcity is one of the most important problems in Middle East and North Africa. Many researchers believe that solar distillation is the best solution to solve water scarcity, especially since these areas are characterized by abundant solar energy most days of the year. One of the main disadvantages of solar distillates is the low rate of production and therefore the research focuses on the factors that many enhance and improve the rates of production of the solar stills. In this paper, the performance of a passive built in condenser incorporated into a solar still is studied theoretically and experimentally using. A theoretical framework is developed to forecast the productivity performance (accumulated and hourly), the temperatures of the various elements of the stills. The theoretical and experimental results were compared together and discussed thoroughly. Both theoretical and experimental results were in good agreement. The behaviors of both agree well with each other and have similar trends.

Highlights

  • One of the essentials for sustainable development is the provision of freshwater for human activity

  • The main deficiency is that they have low outputs compared to other thermal or membrane systems. This low productivity lead researchers to focus on the study of the various factors that promote and enhance productivity rate through the adoption of different techniques and the exploration and application of different designs to improve the level of the solar still productivity

  • A wide review on external and internal condenser incorporated into solar stills is published by Kabeel et al [[7]. the review pointed out that solar stills with incorporated condensers had a positive effect in increasing the rate of productivity. many researches were done on the solar still incorporating condenser [8,9,10,11,12]

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Summary

Introduction

One of the essentials for sustainable development is the provision of freshwater for human activity. The main deficiency is that they have low outputs compared to other thermal or membrane systems This low productivity lead researchers to focus on the study of the various factors that promote and enhance productivity rate through the adoption of different techniques and the exploration and application of different designs to improve the level of the solar still productivity. The review pointed out that solar stills with incorporated condensers had a positive effect in increasing the rate of productivity. In addition the enhancement of productivity due to their use of condenser was found to be 40% of the total distillation output. Khalifa et al [12] used an internal condenser in their work to enhance the distillate water productivity using internal condenser They performed comparable to water quality standards, against rain water and mineral water. Their experiment delivered in terms of the daily efficiency of about 54%

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