Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
622674 | Desalination | 2016 | 22 Pages |
Abstract
In this paper, year round performance and enviro-economic analyses of active multi-effect vertical solar still were carried out using the developed comprehensive mathematical model. The optimum number of effects, mass flow rate of feed water and gap between the effects were found to be five, 7.20Â kg/h and 0.05Â m, respectively. Maximum annual average distillate yield of 6.78 and 21.29Â kg/m2-d was noticed for the optimized unit under normal mode and low pressure mode operation. Maximum annual average Performance ratio (PR) and Solar energy Coefficient of Performance (SCP) of 5.59 and 3.03 was noticed under evacuated mode operation. Energy payback time and distilled water production cost of the evacuated unit treating 5Â wt% saline water was around 1.37Â yrs and Rs.2272.00/m3 (33.00Â USD/m3), respectively and it can effectively mitigate at least 81.81Â tons of CO2 emission during its life time of 20Â yrs. Distilled water production cost of the evacuated unit was found to reduce from Rs.2270.00/m3 (33.00Â USD/m3) to Rs.1310.00/m3 (19.00Â USD/m3) by decreasing the interest rate from 12% to 5%. Salinity of feed water and interest rate at which the unit was financed played a major role in distilled water production cost.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
K.S. Reddy, H. Sharon,