A Systematic Investigation on Evaporation, Condensation and Production of Sustainable Water from Novel-Designed Tubular
In the current scenario, mammoth task is the management of the potable water supply. Clean water is considered to be the fundamental need for humans. In this study, we explore the performance of new design for the solar desalination integrated with parabo
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Nomenclature Ac Cp Do Ib L m Me Quseful rb S Tc Te Ti To T w,i T w,o Lw w γ int
Aperture area (m2 ) Specific heat of the water (w/m2 ) Outer diameter of glass tube (mm) Incident beam radiation perpendicular to aperture plane (w/m2 ) Length of the reflector (mm) Mass flow rate of water (kg/s) Daily distilled water output (ml) Total useful heat (w/m2 ) Tilt factor for the aperture plane Total solar flux (w/m2 ) Temperature of cooling water (K) Temperature of environment (K) Temperature of input water (K) Temperature of output water from copper tube (K) Temperature of inlet water (K) Temperature of outlet water (K) Latent heat of condensation of water (KJ/Kg) Aperture width of reflector (mm) Intercept factor, the fraction of the reflected radiation intercepted by the absorber plate
M. Lad · N. Usadadia · S. Paneliya · S. Khanna · V. Bhavsar · I. Mukhopadhyay · A. Ray (B) Department of Solar Energy, Pandit Deendayal Petroleum University, Raysan, Gandhinagar, Gujarat 382007, India e-mail: [email protected] D. Joshi Rudra Solar Energy, Vatva GIDC, Ahmedabad, Gujarat 382440, India © Springer Nature Singapore Pte Ltd. 2021 M. Bose and A. Modi (eds.), Proceedings of the 7th International Conference on Advances in Energy Research, Springer Proceedings in Energy, https://doi.org/10.1007/978-981-15-5955-6_107
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ρ (τ α)b η
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Specular reflectivity of the concentrator surface Average value of the transmissivity absorptivity product for beam radiation Efficiency of the proposed still
1 Introduction Water is one of the prime elements responsible for life on earth. Totally, 75% of the earth surface is covered with salt water which cannot be used for drinking, growing crops or most industrial uses as it contains high amount of salts. Many people have been suffering from the shortage of safe drinking water, particularly in arid regions and areas near to the sea. The solution to the current state of problem includes building dams and reservoirs, transporting freshwater between locations, withdrawing groundwater and desalination. Building dams and reservoirs includes the disadvantages of displacement of people and disruption of aquatic systems and the hydrological cycle. Transferring large amounts of water from water-rich areas to water-poor areas can give stream runoff and can cause ecological, economical and health disasters. The technique of desalination can solve the problem and increase the supply of fresh water using electric RO system. The major disadvantage of desalination system using electric RO system is increasing the cost of the overall system and not viable. So, if arid regions and remote regions are rich in solar energy, solar distillation would be an effective solution for the scarcity of water resources. Solar radiation can be the source green energy which can be use as heat energy for evaporation of brackish or sea water and is then condensed as pure water. Earlier, in 1999, Hamdan et al. experimentally studied the performance of triple basin pyramid solar still, resulting in the y
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