Advanced combined cycles using gas turbine and bottoming cycles have been developed to improve energy efficiency and output power of the conventional thermal power plants. In this study, integrated biomass gasification‐cascaded humidification advanced turbine and steam turbine cycle have been presented as a novel approach to reach out the sustainable energy vision. All generators of this comprehensive system operate by syngas produced from biomass gasification. Based on the technical consideration, modeling and simulation of the mentioned cycle have been performed, which results indicated more than 33.6 MW power generation and about 56.4% total efficiency in the base case. Moreover, parametric studies demonstrated the considerable dependency of the delivered power, specific fuel consumption, and heat rate to ambient temperature variations. In addition, principal parameters changes due to the fluctuation of the gasification temperature demonstrated an obvious increase in fuel consumption rate after crossing a turning point. Eventually, other achievements such as the negative effect of biomass moisture increase on cycle outputs, and also, advantages of turbine inlet temperature rise have obtained by plant analyzes. © 2019 American Institute of Chemical Engineers Environ Prog, 38:e13146, 2019
The present study investigates seismic response problems of triangular uniform irregular alluvial valleys under shear waves using a finite element spectral method. Alluvial valleys; affect the shape and properties of alluvial materials on the response and seismic behavior of the valley surface due to the geometry conditions. Therefore this study aims to illustrate the plots and magnitude of amplification values for irregular alluvial valleys in a two-dimensional triangular manner, with the characteristics of homogeneous alluvial materials and different geometric characteristics. The analysis in the time domain was performed based on the finite element method of the spectral element (SFEM) using NASEM software, developed by Najafizadeh. The valleys are analyzed with the slope angles of 15, 30, 45 and 60 degrees on one side and in opposite directions with a slope of 45 degrees and with a maximum depth of 50 meters for the alluvial valley. The horizontal amplification curves in the alluvial valley's points from the analysis reach a maximum value at a given frequency, which can be an ideology for determining the frequency of irregular triangular alluvial valleys under different slope valley angles. The results of natural valley frequencies indicate that with decreasing slope of the valley, the natural frequency of the valley decreases, as well as amplification plots are related to the slope of the valley.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.