Solar Water Purification Essay

Solar Water Purification Essay

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In 2008, Markus Forstmeier, Wilhelm Feichter , Oliver Mayer. [1]. One third of the world population does not have access to clean water sources and most of these people are not connected to the electrical grid at the same time. Therefore, photovoltaic (PV) powered water purification suggests itself to be one of the solutions in areas with high sun radiation like India or the MENA (Middle East and North Africa) region. Furthermore, the environmental impact of the process can be reduced substantially as no fuel supply is required. The paper presents a concept of combining a membrane filtration plant with PV power supply only. As PV is a fluctuating energy source and the conventional membrane process needs a constant power input to maintain pressure and flow on the membranes to guarantee their lifetime, some challenges in the system design need to be addressed. Mere coupling of off-the-shelf components does not do the job. A full-scale system for sustainable water purification has been designed and tested in the lab and a pilot location. The results are presented in the paper. Beyond the environmental benefits, the system also competes with standard systems on the market. Based on the experimental results, a cost model has been derived, the main cost factors for the system will be established and a design strategy for a small-scale PV powered system, able to supply a farm or village with safe potable water, is presented.
In 2010, M. Vivar, I. Skryabin, V. Everett, A.Blakers [2]. A new concept for a hybrid solar water purification and photovoltaic system for meeting the needs for clean water and electricity in one integrated, autonomous, and cost-effective system is presented in this article. The purified water and power (PWAP) receiv...


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... is designed to fit into a standard shipping container for ease of transportation worldwide.

III. OBJECTIVES
i) Design of the Solar operated water desalination system
ii) Fabrication of Solar operated water purification system.
iii) Cost Reduction.
IV. PROBLEM DEFINITION
The growing stress on the ground water sources worldwide is increasing the need for alternative fresh water supply. The demand for fresh water is especially critical in rural and impoverish communities. With advanced and economical desalination techniques, the availability of fresh drinking water can be greatly increased to alleviate this need. The current troughs are designed and fabricated to facilitate the necessary energy required. A non-toxic, non-hazardous HTF is selected as the working fluid for the solar trough hot loop. System performance analysis is conducted through a set of experiments.

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