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A stepwise optimization method for topology structure of fluid machinery network
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A stepwise optimization method for topology structure of fluid machinery network
The circulating water system is widely used as the cooling system in the process industry,which has the characteristics of high water and power consumption,and its energy consumption level has an important impact on the economic performance of the whole system.Pump network and water turbine network constitute the work network of the circulating water system,that is,the fluid machinery network.Based on the previous studies,this paper proposes a stepwise method to optimize the fluid machinery network,that is,to optimize the network structure by using the recoverable pressure-head curve of the branch,and consider the recovery of adjustable resistance at the valve of each branch,so as to further reduce energy consumption and water consumption.The calculation result of the case shows that the topology structure optimization can further reduce the operation cost and the annual capital cost on the basis of the fixed structure optimization,and the total annualized cost can be reduced by 30.04％.The optimi-zation result of different flow shows that both the pump network and the water turbine network tend to series structure at a low flow rate whereas to parallel structure at a high flow rate.
Shaanxi Yanchang Petroleum(Group)Co.,Ltd.,& Dalian Institute of Chemical Physics Xi'an Clean Energy(Chemical Industry)Research Institute,Xi'an 710000,China
Fluid machinery network Recoverable pressure head Topology structure Model Optimization Systems engineering
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