Papers by Palanichamy Gandhidasan
2015 3rd International Renewable and Sustainable Energy Conference (IRSEC), 2015
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Aerosol and Air Quality Research
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International Journal of Food Engineering, 2007
Abstract A single tube, stainless steel, liquid desiccant falling film evaporator was built and t... more Abstract A single tube, stainless steel, liquid desiccant falling film evaporator was built and tested with the calcium chloride solution as the liquid desiccant to concentrate liquid foods. Experiments were conducted in the above setup with sugar solutions as the liquid food. To ...
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Water and Environment Journal, 2009
In order to harvest water present in a humid atmosphere, a suitable absorber/desorber was designe... more In order to harvest water present in a humid atmosphere, a suitable absorber/desorber was designed. Experiments were conducted in Dhahran to measure the water absorption rate in the nighttime and the water desorption rate in the daytime. It was found that the water absorption rate was 2.11 L/m2/day and the water desorption rate was 1.15 L/m2/day depending on the desiccant flow rate. In order to assess the feasibility of the system, the unit was tested continuously in the nighttime as well as in the daytime and the results are reported in this paper. The chemical characteristics of a set of water samples collected were analysed and the water collected was found to meet most of the World Health Organization drinking water standards. The problem associated with this technology is the mixing of dust and dirt with the desiccant solution, and the fact that a small pump is required to circulate the solution.
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Water and Environment Journal, 2007
In order to harvest water contained in fog, the topographical features and the climatic condition... more In order to harvest water contained in fog, the topographical features and the climatic conditions of 27 cities in the Kingdom of Saudi Arabia were studied. The topography, altitude and orientation are some of the factors that determined the selection of the site. It was identified that the southwest of the region in the kingdom was the most suitable location for the fog-collection process. In order to evaluate the effectiveness of fog water collection and the site, three identical standard fog collectors (SFCs) with two different local collection materials were designed and manufactured. Experiments were conducted at two different locations in the area close to Abha, namely Soodha. The maximum amount of water collected was 22.9 L/m2 in a day and 7.25 L/m2 in a 2-h period. It was found that there was a high probability of fog when the relative humidity was higher than 95%. The results from the chemical analyses of eight sets of fog water samples collected were compared with World Health Organization drinking water standards. It was found that the level of heavy metals was negligible and the level of Fe was marginally high for the first flush only. The study indicates that in terms of both quality and magnitude of yield, fog is a viable source of water and can be successfully used to supplement water supplies in the fog-prone regions of the kingdom.
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Papers by Palanichamy Gandhidasan