Graphitic carbon nitride (g-C3N4) is confronted with the issue of poor utilization of photogenerated charge carriers, thereby leading to limited performance of photocatalytic hydrogen (H2) production, which restricts ...
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A kinetic model was proposed to predict the seawater fouling process in the seawater heat *** new model adopted an expression combining depositional and removal behaviors for seawater fouling based on the Kern–Seaton...
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A kinetic model was proposed to predict the seawater fouling process in the seawater heat *** new model adopted an expression combining depositional and removal behaviors for seawater fouling based on the Kern–Seaton *** present model parameters include the integrated kinetic rate of deposition(k d)and the integrated kinetic rate of removal(k r),which have clear physical signi ficance.A seawater-fouling monitoring device was established to validate the *** experimental data were well fitted to the model,and the parameters were obtained in different *** and EDX analyses were performed after the experiments,and the results show that the main components of seawater fouling are magnesium hydroxide and aluminum *** effects of surface temperature,flow velocity and surface free energy were assessed by the model and the experimental *** results indicate that the seawater fouling becomes aggravated as the surface temperature increased in a certain range,and the seawater fouling resistance reduced as the flow velocity of seawater ***,the effect of the surface free energy of metals was analyzed,showing that the lower surface free energy mitigates the seawater fouling accumulation.
Safety analysis is an important issue in the feasibility evaluation of a new reactor concept. The preliminary safety analysis of a reactor system, which applies simple Super-critical Carbon Dioxide (S-CO2) Brayton cyc...
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With the theory of the Reynolds stress model applied, a mathematical model of the flow and heat transfer of the helical baffles heat exchanger is established. The commercial software FLUENT is used to simulate the inf...
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Electrical capacitance tomography technology is widely used in the field of flow regime identification. And image segmentation is one of the key technologies of flow regime identification. 2D Maximum Entropy Thr...
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The reflooding, i.e. injecting water to the uncovered degraded core, is the most important accident management measure to terminate a severe accident and to stop the core from being melt in LWR. The reflooding of LWR ...
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The reflooding, i.e. injecting water to the uncovered degraded core, is the most important accident management measure to terminate a severe accident and to stop the core from being melt in LWR. The reflooding of LWR core during severe accident may lead to the core cooling and cessation or to the temperature escalation and further development of the accident. That will depend on several important parameters, characterizing the core state and the way of the reflooding. Appropriate understanding of the complex core reflooding phenomena is necessary for the prediction of the system evolution. Based on the reflood flow and heat transfer characteristics, a thermo-hydraulic analysis model for the reflood phase was developed and presented in this paper. Based on this model, a code module was developed for the thermo-hydraulic analysis of reflood. The calculation results for the different conditions are compared with the FLECHT data and the QUENCH data, respectively. The results showed that the calculation results and the experiment data are in substantial agreement. Then the influences of the system pressure, the subcooling of coolant and the wall temperature on reflood characteristics were studied, too. The quench velocity falls when the wall temperature went up. The quench velocity increases when the system pressure increases. The quench velocity drops with the increasing of water temperature. The paper also provides a theoretical basis for safety analysis of fuel element cladding during reflood phase.
This paper makes researches on a solar heating system with seasonal water tank heat storage (SHS-SWTHS) for a 9000m2 building located at Beijing, based on a similarity principle research method proposed by the present...
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In this paper, a similarity principle research method is proposed to research the solar heating system with seasonal water tank heat storage (SHS-SWTHS). In this method, the similarity principle is applied to build a ...
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Experimental research on the joint development of horizontal and vertical wells is carried out in this *** well patterns（VIVP,HIVP,VIHP and HIHP）were used to compare the advantages and disadvantages of water-injecti...
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Experimental research on the joint development of horizontal and vertical wells is carried out in this *** well patterns（VIVP,HIVP,VIHP and HIHP）were used to compare the advantages and disadvantages of water-injection and oil-production in horizontal and vertical *** is concluded that HIHP well pattern can form linear drive,delay injection water breakthrough time,improve sweep efficiency and reservoir recovery rate;horizontal wells are more suitable as production wells.
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