Leakage inspection of the stepped solar still using the magnetic particle testing method
الموضوعات :hamidreza goshayeshi 1 , kimya samadi 2 , Reza Saleh 3 , Vahid Nejati 4
1 - Department of mechanical engineering, mashhad branch, azad university. mashhad,iran
2 - Department of Mechanics, Faculty of engineering, Islamic azad university,Mashhad,Iran
3 -
4 - دانشگاه آزاد اسلامی مشهد
الکلمات المفتاحية: Solar Still, Magnetic Field, Flux Density, Leakage Fields, Defect Detection,
ملخص المقالة :
The shortage of drinking water in many regions of the world that lack access to freshwater is one of the major challenges faced by humanity today, as 98.77% of the world's water is saline. One of the most important water sources on Earth is seas and oceans, but direct use of this water for human consumption is not feasible due to its various salts. In Iran, due to its hot and dry climate, water has always been a critical issue. Considering that Iran has two seas to the north and south and is geographically well-positioned for harnessing solar energy, the use of solar systems is appropriate. One method of supplying water is by using seawater, which requires desalination due to its salinity. This process typically demands high energy consumption, making solar desalination, which utilizes the abundant energy from the sun, the best method for obtaining drinking water during the hot seasons. Current studies on solar desalination systems focus on increasing their efficiency and producing more freshwater using conventional methods. Since the device must be completely sealed to prevent water leakage, which is crucial for improving efficiency and ensuring the production of drinking water, the welded sections of the solar desalination device were inspected using the non-destructive magnetic particle testing method. After necessary inspections, all pores and seams were completely sealed against water and moisture penetration using sealing adhesive. The results of the solar desalination device showed that its efficiency increased by 55.2% compared to the state before the tests were conducted.
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