... than the temperature of the gas entering the bed. This phenomenon can be attributed to release of the latent heat of vaporization due to condensation of all of ethane and propane into the pores of carbon. Due to its hydrophobic nature carbon is not expected to produce significant condensation of water...

... temperature. However, if sintered at 1100 ° C and 1200 ° C , the DKKK ceramics exist in a rhombohedral phase at room temperature. The DKKK ceramics sintered at 1300 ° C or above exhibit cubic to rhombohedral and back to cubic phase transitions upon heating at a 300 – 500 ° C temperature range, while Praxair...

...S. M. Guo; A. B. M. Hasan Proton exchange membrane fuel cells (PEMFCs) are attractive power plants for use in many applications, including portable power sources, electric vehicles, and on-site combined power/heat plants. Despite the advantages, one of the significant obstacles to PEMFC...

... water heating. To increase the efficiency, outlet steam of fuel cell is fed to the reformer. The perfomance of the system is optimized by exergy analysis based on the second law of thermodynamics. Also, the effect of burner, fuel cell temperature and stoichiometric air fuel ratio are investigated...