Polarization fuel utilization effect

Fuel utilization effect on ceU polarization in presence of CO, calculated for 1 atm, 75% (top) or 40% (bottom) inlet, with 10 ppm CO. In each case, the polarization curve is calculated for four fuel utilization levels of 0, 0.5,0.8 and 0.9. (From Springer, T. et al, 2001. Journal of the Electrochemical Society, 148 A11-A23. With permission.)... 

Finally, the sectors of the generator, of different pedigree and position, are compared in terms of the main polarization effects. The polarization behavior has been investigated at fixed setpoint temperature and overall fuel consumption. On this basis, a parameter estimation, using a polarization model of a single cell, has been performed and used for the analysis of the local activation effects. It has been shown how the local fuel utilization and temperature affect the estimated local anode exchange eurrent density values. 

Analysis of the Polarization Effects of the Various Sectors at Variable Local Fuel Utilization and Temperature... 

Nevertheless, the activation contribution to the cell voltage sensitivity to FU is neglected in this part of the analysis because of its small effect of the voltage drop [16,21]. In the next Paragraph 6, dealing with parameter estimation of some terms of the cell polarization model, the anode exchange current density will be estimated and a correlation with the local fuel utilization will be outlined. 

The same analysis was also carried out by impedance spectroscopy measurements as shown in Figs. B.5, B.6, B.7, and B.8. The crossing effect of the two parameters is clearly evident by the increase in total cell polarization alongside the increase in the fuel utilization factor and the drop in temperamre. With the increase in fuel utilization, while ohmic polarization is nearly unaffected (i.e. staying around 11 mQ at 650°C) total cell resistance rises from 17.5 m l (j/j = 0.2) to 25 mQ (t]f = 0.8) due to the increase in polarization related to medium and low... 

Clay filtration can be utilized to effectively remove polar compounds such as corrosion inhibitors, electrical conductivity improvers, and antioxidants from jet fuel. Also, more costly molecular sieve techniques can be utilized to remove contaminants from jet fuel. 

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