Applied Mechanics and Materials Vol. 441

Abstract: Power plant usually burns a certain scale of non-designed coal, separating largely from its designed coal. So it can reduce the fuel costs as well as ensure the economic benefits. To get the optimal ratio scheme of coal blending, Multi-coals of blending are taken as studying subject from the aspect of reducing electric power generation costs. It analyzes the influence on electric power generation costs by coal blending under different ratios, taking enumeration as optimized method .Finally it can give an optimal ratio scheme with the minimal costs.

Abstract: Scientific analysis of the leakage of the water distribution system in city is very helpful to water supply network’s maintenance and renovation, and hence reduces negative social effect and economic loss. A leakage risk nalysis model for water distribution system was established based on fuzzy analytical hierarchy process (FAHP) and BP neural network (BPNN). This model introduces FAHP to reasonably ensure initial state of BP neural network, and uses weighted superposition to mend learning sample set of BP neural network. The water distribution system of a city in Zhejiang province P. R. China was selected to test the proposed risk analysis model, which verifise its feasibility and effectivity.