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Experimental investigation of a multi-effect active solar still: The effect of the number of stages

2014; Elsevier BV; Volume: 137; Linguagem: Inglês

10.1016/j.apenergy.2014.09.082

1872-9118

M.R. Karimi Estahbanati, Mehrzad Feilizadeh, Khosrow Jafarpur, Mansoor Feilizadeh, Mohammad Reza Rahimpour,

Solar Thermal and Photovoltaic Systems

In this work, the effect of the number of stages on the productivity of a multi-effect active solar still was experimentally investigated for the first time. Moreover, system performances in continuous and non-continuous modes were compared. For this purpose, indoor experiments were conducted on 4 similar solar still devices with different stages (1–4 stages) in order to accurately control the environmental conditions. In addition, water production was hourly measured during the whole 24-h experiment. The results show that with increased number of stages, distillate production can be predicted with a quadratic function. Moreover, adding a maximum of 6 and 10 additional stages can significantly increase production in continuous and non-continuous modes, respectively. It was also concluded that with more stages, the production enhancement is more in the continuous mode compared to the non-continuous mode, in a way that there is no significant difference between the performance of the single-stage device in continuous and non-continuous modes.