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The cold start characteristic of hydraulic free piston diesel engine may affect its stable operation. Therefore the specific cold start characteristics, such as BDC or TDC positions, pressure in-cylinder, heat release rate, should be investigated in detail. These parameters fluctuate in some regularity in the cod start process. With the development of the free piston engine prototype and the establishment...
Only one H atom is extracted from a single H2O molecule in a usual reaction for hydrogen generation. In this study, a three-step reaction has been identified for completely extracting H2 from H2O molecule with the catalysis of a small Al6Cu cluster, based on the first principles calculations. All the reactants, products, and transition states are determined by optimization calculation and confirmed...
The hydraulic free-piston engine integrates the internal combustion engine with a hydraulic pump. The piston of an HFPE is not connected to the crankshaft and the piston movement is determined by the forces that act upon it. These features optimize combustion and make higher power density and efficiency increase. In this paper, a detailed thermodynamic and energy saving analysis is performed to demonstrate...
A novel small-sized integrated solar desalination system with multi-stage evaporation/heat recovery processes is designed and tested. The system consists of four linked collecting units. In each unit, an independent desalination process including solar heat collecting, heat recovery and seawater evaporation can be carried out completely. The system operates under barotropic and atmospheric pressure...
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