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Fractal theory, which builds a bridge between micro-morphology and macro-performance, is an effective method for characterizing the complexity of pore-structure which has irregularity. In this paper, the fractal dimension calculated by box-counting method based on fractal theory is applied to characterizing the pore structure. The microstructure or pore distribution in porous materials is obtained...
The methane hydrate dissociation process is always subject to the influence of heat transfer, which may affect the distribution of core temperature and the cumulative gas production. In this study, in order to analyze the heat transfer from surrounding and the conduction and convective heat transfer effect in hydrate dissociation process, a two-dimensional axisymmetric simulator is developed to model...
Many utility boilers' efficiency will reduce when the coal fired is changed. The caloric value of coal is important to adjust the combustion performance in the boiler for operators. Based on the principles of coal combustion a neural network model is constructed to identify the caloric value of coal in boilers according to the relationship between boiler combustion information and boiler operation...
For the facts that lots of low-temperature waste heat from industries (such as oil plants, chemical plants, power plants or steel plants) is abundant but rarely used, a series of analogue tests are conducted by using indoor high-temperature heat pump set-up. According to the tested data and results, the empirical expressions of all performance indexes are regressed under the condition of using R142b...
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