The main purpose of this paper was to develop a complete dynamic model of a power generation system based on two serially connected solid oxide fuel cell stacks. The uniqueness of this study lies in a different number of fuel cells in the stacks. The model consists of the electrochemical model, mass and energy balance equations implemented in MATLAB Simulink environment. Particular attention ha...

Assessment of creep damage and residual creep life of a cast HP 40 Nb Mod. Reformer tube was performed, wherein the experimental Larson–Miller diagram and area fraction of creep voids were adopted. The state of damage of the tube in service was metallographically analyzed by using light and electron microscopy. Samples from the serviced reformer furnace tube were cut and prepared for void exami...

A mathematical model for commercial naphtha catalytic reformer of Tehran refinery was developed. This model includes three sequencing fixed beds of Pt/Al2O3 catalyst at the steady state condition using detailed kinetic scheme involving 26 pseudo-components connected by a network of 47 reactions, in the range of C6 to C9 hydrocarbons. The reaction network consisted dehy...

In this work, our methods for the dynamic risk analysis of large alarm databases [1-3], previously tested on a fluidized catalytic cracking unit (FCCU), are extended and tested using data over three years from a steam-methane reformer (SMR) unit at Air Liquide. This paper also introduces methods of providing online estimates that alert operators to potentially serious safety problems. The estim...

The article sets out to draw a very brief comparison of the common features shared by purist attitudes displayed two 19th-century English and Romanian scholars, William Barnes August Treboniu Laurian classifies them according set criteria devised Thomas (1991). paper also goes over several concepts regarding purism. author analyses concept purism in both countries within intellectual temporal d...