Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 2 of 2
Full-Text Articles in Engineering
Log Truck Value Analysis From Increased Rail Usage, Sangpil Ko, Pasi Lautala, Kuilin Zhang
Log Truck Value Analysis From Increased Rail Usage, Sangpil Ko, Pasi Lautala, Kuilin Zhang
Michigan Tech Publications
Over the past several decades, the transportation of raw materials (logs) has increasingly shifted from the railway to trucks. However, the long-term sustainability of this shift is being questioned due to the shortage of truck drivers, fluctuation of fuel prices, and changes in hours of service laws. The industry is interested in the possibility to shift more logs back to the railway but the impact of such a shift on truckers has not been investigated. This study attempted to quantify the impact of such a change on the operations of log truckers by calculating time efficiency (percentage of daily hours …
Exergy Study On The Effect Of Material Parameters And Operating Conditions On The Anode Diffusion Polarization Of The Sofc, Khalid Zouhri, Seong Young Lee
Exergy Study On The Effect Of Material Parameters And Operating Conditions On The Anode Diffusion Polarization Of The Sofc, Khalid Zouhri, Seong Young Lee
Michigan Tech Publications
In the presented work, a model is created in order to investigate the effect of different material parameters and operating conditions on the anode diffusion overpotential, which influence the exergy and energy efficiency of the solid oxide fuel cell (SOFC). In this research, it was demonstrated that the anode material parameters and operating conditions of the device components such as porosity, tortuosity, pore diameter, temperature, pressure and current density of the anode have various effects on the anode diffusion overpotential, which consequently affect the exergy and energy efficiency of the SOFC. The model has provided a strong direction on how …