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Experimental investigation of the solar distiller using nano-black paint for different water depths

2021; Elsevier BV; Volume: 56; Linguagem: Inglês

10.1016/j.matpr.2021.11.440

2214-7853

V. S. Chandrika, J. Samson Isaac, Jackson Daniel, K. Kathiresan, C Muthiah, E. Fantin Irudaya Raj, Ram Subbiah,

Solar Energy Systems and Technologies

World nations are continuously thriving to find a prompt solution to the scarcity of potable water. In recent years, solar distiller has been suggested as a feasible technology for tapping drinkable water from saline water. In a solar distiller, the absorber surface has a significant impact on the solar distiller's performance. This work presents an attempt to increase the performance of a traditional solar distiller by improving the thermal conductivity of the absorber surface through spraying a nano-black paint over its surface. In this study, two distillers of identical size were used. One solar distiller was made by painting the absorbing plate with normal black paint and labelling it as a traditional solar distiller (TSD). Another distiller was prepared by painting the absorber of the traditional distiller with nano-black paint (TSD-Nano). The tests had been carried out over two days, with water levels of 0.1 cm and 0.2 cm in both solar distillers, respectively. For the fabrication of TSD-Nano, a nano-paint was prepared by thoroughly mixing 1.0 vol% of nano-CuO particles with black paint. The results showed that a coating of nano-black paint increased the thermal conductivity of the absorber and thereby increased the production of the solar distiller by 10.38% and 8.73% for 0.1 cm and 0.2 cm water depths, respectively, comparing to normal black paint.