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Barbora, Lepakshi
- Enhanced Performance of Direct Methanol Fuel Cell Using Talc Modified Nafion Membrane
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International Journal of Innovative Research and Development, Vol 1, No 7Sp (2012), Pagination: 128-134Abstract
Magnesium silicate hydroxide, Mg3Si4O10(OH)2, commonly known as talc, is employed to modify nafion for application in direct methanol fuel cell. Improved proton conductivity and reduced fuel permeability are shown by the talc/nafion composite membrane. Highest proton conductivity is achieved with 5% talc/nafion membrane, which is 27.14% higher than that of pure cast nafion membrane. However, 1% talc/nafion membrane reduced methanol permeability by 51% compared to nafion 117 and by 42% compared to pure cast nafion. Fuel cell performance was evaluated at varying methanol concentrations and temperatures. The talc/nafion membranes exhibited higher open circuit voltages and current density than both pure cast nafion and nafion 117. The highest current density is achieved with 1% talc/nafion with 3 M methanol at 80°C. At a constant cell voltage of 0.28 V, 155.95 mA-cm-2 of current density is obtained with 1% talc/nafion, 6.4 mA-cm-2 with pure cast nafion and 6.82 mA-cm-2 with nafion 117.Keywords
Direct Methanol Fuel Cell, Nafion Composite, Methanol Permeability, Proton Conductivity, TalcFull Text
- Performance Analysis of a Hybrid Water Purification System
Abstract Views :138 |
PDF Views:4
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International Journal of Innovative Research and Development, Vol 1, No 7Sp (2012), Pagination: 263-268Abstract
Fluoride contaminated water has become a major concern in many regions. In the present work a hybrid water purifier has been developed in order to enhance daily distillate and for delivery of fluoride free water. Two sources namely biomass/biogas and solar energy is used to heat and hence evaporate the water. Evaporated water vapour is condensed before it is collected as distillate. Performance of the water purifier was carried out at 5 (five) different water volumes (10, 15, 20, 25 and 30 litres) and at different quantities of fuel burning (2, 3, 3.5 and 5 kg) and solar radiation. Based on the experiment, it has been observed that maximum distillate of 5.5 litre has been observed in 4 hours for water volume of 10 litres. The performance of the hybrid is found to be enhanced with the incorporation of condenserKeywords
Renewable, Solar, Biogas, Biomass, Fluoride, PotableFull Text