Nanofluids have received much attention in part due to the range of properties possible with different combinations nanoparticles and base fluids. In this work, we measure viscosity suspensions graphite particles ethylene glycol as a function volume fraction, shear rate, temperature below above percolation threshold. We also contrast trends observed increasing fraction thermal conductivity behavior same suspensions: threshold, slope that describes rate enhancement concentration reduces...

This study investigates the shear properties of ultrahigh performance concrete (UHPC) wet joints through direct tests on UHPC flat joint specimens. Four sets specimens were designed with varying levels constrained normal stress. The results showed that all exhibited brittle damage near UHPC-NC interface. application 1 MPa, 2 MPa and 3 stress increased strength by 103.4%, 184.4%, 272.3%, respectively, compared to unconstrained specimen. An analytical model is proposed quantitatively describe...

The feasibility of using the transfer matrix method (TMM) to analyze open-variable thickness circular cylindrical shells exposed a high-temperature field is explored theoretically. In approach problem, thermal degradation (TG) thermoelastic characteristics material considered. Natural frequencies and mode shapes for are investigated in detail by combining vibration theory with TMM. governing equations this system expressed differential equations, coefficient matrices derived. After...

Ash deposition in flue gas covering low-temperature surfaces (<150 °C) of biomass-fired power plants have two typical characteristics that are distinct from coal-fired plant. First, NH4Cl is present the deposited ash when surface temperature adequately low. Second, hygroscopic salts, such as CaCl2, MgCl2, NaCl etc. ash, which may cause to adhere salts absorb water. In this study, a test system with transformable cooling media was designed according measured needs for on-site experiments 35...

Ash deposition is a key factor that deteriorates the heat transfer performance and leads to higher energy consumption of low pressure economizer working in temperature flue gas. In order study ash exchange tubes gas, two experiments are carried out with different types gas environments. this paper, Nusselt Number Nu fouling factor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mrow><mml:mi mathvariant="normal">ε</mml:mi></mml:mrow></mml:math>are calculated describe...

Recovering the waste heat of flue gas to reduce its temperature with avoiding low-temperature corrosion is an effective way improve economic efficiency coal-fired power plant. A coupled high-low energy level recovery system was introduced in paper. The inlet air preheater and turbine condensate can be increased by using this system. Thermal economy model built based on equivalent drop method. successfully applied 1000MW ultra-supercritical double reheat unit Laiwu Power Plant China Huaneng...

The residual resistance factor of weak gel plays an important role in predicting flooding performance. Physical and numerical simulation was employed to determine this parameter for Faulted Block 6 Region 1 Gangdong Oilfield. Sandpack models with various permeability properties were built simulate different formations. Different values the determined through physical models. Numerical conducted subsequently match history performance simulations modifying primary factor. Finally a...

Aggressiveness of KCl in high temperature was studied this article.Electrochemical experiments hot molten and corrosion were conducted for analysis possible reaction.Comprehensive indicated that aggressiveness mechanisms controlled by four-step processes.The final step activation oxidation process, which can lead to higher stress result oxide scale exfoliation.

Incident investigation and root cause analysis (RCA) are widely used in nuclear power plant incident confirmation. In this paper, based on the literature reviews of related incidents IAEA (International Atomic Energy Agency), Europe United States, methods techniques or tools causes world studied, for analyzed summarized. Through a comparison various relevant application tools, differences between these elaborated terms both concept applicable application. addition, RCA is also briefed...

There are various finned tube heat exchanges with diverse thermo-flow performance being widely applied in the power plants. Wherein, H-type tubes used economizer to improve waste utilization efficiency of coal fired boiler. The experimental studies regarding transfer and resistance characteristics single double have obtained performances under different conditions. In addition, test facility channels is specially designed ensure accuracy. Correlations for Euler number Eu, Nusselt Nu...

With the rapid development of nuclear power industry in China, risk equipment failure is unavoidable process plant operation, so it great value and significance to apply mature RCA analysis technology solve problems. This paper uses root cause method which applicable engineering, solves address code confusion multiple systems, such as island nitrogen distribution system water flow control system. Finally, determines string fault, puts forward effective corrective measures.

Research Purpose . In order to study the evolution mechanism of intellectual property operation platform, value analysis in modern digital technology‐driven environment, and how better develop platform current technology environment; Methods This paper analyzes relationship between development economy analyzes, compares different stages coupling degree services environments. Results From research results, it can be seen that rights under is positive significance social‐ecological combined...

To reduce ship collision avoidance accidents caused by human factors and improve the safety of navigation, a collision-avoidance model for intelligent navigation is proposed, which based on deep reinforcement learning. The learning algorithm. Information such as current position, speed, phase used input model. optimal policy solved value function solver A specific reward designed to combine Vessel Conflict Ranking Operator (VCRO) with function. In this way, an constructed. Firstly, content...

Study on the path ofpolishing