Modeling and simulation of an integrated steam reforming and nuclear heat system
Abstract In this study, a dynamic and two-dimensional model for a steam methane reforming process integrated with nuclear heat production is developed. The model is based on first principles and considers the conservation of mass, momentum and energy within the system. The model is multi-scale, considering both bulk gas effects as well as spatial differences within the catalyst particles. Very few model parameters need to be fit based on the design specifications reported in the literature. The resulting model fits the reported design conditions of two separate pilot-scale studies (ranging from 0.4 to 10 MW heat transfer duty). A sensitivity analysis indicated that disturbances in the helium feed conditions significantly affect the system, but the overall system performance only changes slightly even for the large changes in the value of the most uncertain parameters.
With the development of the state overhaul in hydroelectric generating set, it is necessary to realize the state monitoring for the hydroelectric generating set, know and deal with the running status in time. Considering the diversity and the complication of state monitoring in hydroelectric generating set, combined with practice, items and implementing solution based on PXI instrument and LabVIEW of on-line monitoring are proposed. The realization of online real-time monitoring of the hydroelectric generating set by the state monitoring system through collecting, processing and analyzing of status value is described in this essay, which will enhance the efficiency of the hydroelectric generating set marvelously. The system is applied in the state overhaul for the hydroelectric generating set.