Based on the eminent characteristics of the ice-storage systems, which can shift cooling electrical demand from peak time to off peak time, this paper describes the ice storage air-conditioning system that is now used...Based on the eminent characteristics of the ice-storage systems, which can shift cooling electrical demand from peak time to off peak time, this paper describes the ice storage air-conditioning system that is now used much frequently. The authors develop the operating cost model by simplification and introduce a neural network model and try to solve the optimal cost problem of operation by using this neural network model. In calculation, any trajectory of the neural network converges to its solution in finite time, which is consistent with result by simplex method. Comparing with different methods, the neural network is more effective, which can be alternative to simplex method in calculating the optimal cost model for ice storage air-conditioning systems.展开更多
Experiments were conducted with oil-gas-water multiphase flow in a horizontal pipe under different flow patterns. The fractal method was applied to analyze the pressure drop signals measured in the experiments. The fr...Experiments were conducted with oil-gas-water multiphase flow in a horizontal pipe under different flow patterns. The fractal method was applied to analyze the pressure drop signals measured in the experiments. The fractal dimensions of the signals were calculated. Preliminary results indicated that the fractal dimensions were small and different under different flow patterns. The fractal dimensions could be used to identify the flow patterns of the oil-gas-water multiphase flows.展开更多
文摘Based on the eminent characteristics of the ice-storage systems, which can shift cooling electrical demand from peak time to off peak time, this paper describes the ice storage air-conditioning system that is now used much frequently. The authors develop the operating cost model by simplification and introduce a neural network model and try to solve the optimal cost problem of operation by using this neural network model. In calculation, any trajectory of the neural network converges to its solution in finite time, which is consistent with result by simplex method. Comparing with different methods, the neural network is more effective, which can be alternative to simplex method in calculating the optimal cost model for ice storage air-conditioning systems.
文摘Experiments were conducted with oil-gas-water multiphase flow in a horizontal pipe under different flow patterns. The fractal method was applied to analyze the pressure drop signals measured in the experiments. The fractal dimensions of the signals were calculated. Preliminary results indicated that the fractal dimensions were small and different under different flow patterns. The fractal dimensions could be used to identify the flow patterns of the oil-gas-water multiphase flows.
