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In order to solve parameter testing problem in fluidized bed reactor, a system is designed based on LabVIEW in this paper, which can realize multi-channel temperature acquisition, display and preservation. And the nonlinear problem of hardware is solved by the using of inverse function in the system, which realizes the function of reactor variable power heating control and improves the test efficiency...
The trend extraction of the burning zone temperature is the basis for the burning state identification and stability control of the cement. In this paper, the trend extraction method of the burning zone temperature based on singular spectrum analysis is studied. Firstly, a visual inspection device is used to detect the temperature of the burning zone. Then, the singular spectrum analysis is carried...
In the view of the complex environment of high altitude areas, a solar chimney power plant experimental setup with a chimney 15 m in height and a collector 15 m in diameter was built. The temperature and velocity of air flow within the collector were tested and analyzed. The results show that the variation of air flow temperature and velocity are similar to the solar radiation. Furthermore, the energy...
With the growth of the population in the world, energy problem has become a major topic in the world. Energy conservation has become an important part of China's national development strategy. The use of microwave heating instead of traditional heating can greatly improve the utilization rate of energy, and then achieve the goal of energy conservation and emissions reduction. However, due to the uneven...
The modular high temperature reactor (MHTGR), which adopts helium as coolant and graphite as moderator and structural material, has inherent nuclear safety. Based upon multi-modular scheme, i.e. the outlet steam flows of multiple nuclear steam supply system (NSSS) modules are combined together to drive a single turbine, the inherent safety feature can be applicable to the plants at any desired power...
Magnetic nanoparticle (MNP) thermometry will be necessary for safe therapeutic implementation of magnetic nanoparticle hyperthermia, a developing cancer treatment. One realization of a MNP thermometer works by detecting harmonic signal (the fundamental f and 3f harmonics) generated by MNPs exposed to ac magnetic field. In this paper, we aim to measure accurately the harmonic signal in a MNP thermometer,...
According to construction scheme to intelligentize the substation primary equipment, a new evaluation method to intelligent transformation of substation primary equipment was presented in this paper. The improvement status of primary equipment in different voltage level substations was widely investigated in East China and Central China. According to the status, a multi-objective optimization evaluation...
To guarantee the thermal safety and obtain good performance of a solid oxide fuel cell (SOFC), the operating temperature and temperature gradient of SOFC must be constrained within a proper range. Thus, it's important to obtain the spatial temperature distribution of SOFC in real time. However, the inner temperature of the fuel cell cannot be obtained by installing thermocouples with acceptable cost...
In order to find a more accurate and stable peak-detection algorithm of FBG, a method of solving the peak position by Gaussian Fitting Algorithm based on Levenberg-Marquardt Algorithm (LM) was studied. In this paper, the principles of Gaussian fitting and Levenberg-Marquardt algorithm are described, and their calculation steps in peak searching algorithm are given. The MOI's SM125 sensor demodulator...
The single-step prediction of burning zone temperature plays an important role in the safety and stability control of cement rotary kiln. In this paper, the burning zone temperature prediction method based on least squares support vector machine is studied. First, the visual inspection device is used to detect the burning zone temperature. And then, the moving average filtering process is performed...
Lamb wave gas sensor has broad industrial application prospects in gas sensing due to its multi-mode characteristic. Lamb wave gas sensor is now still in fundamental academic research period and its performance remains to be determined and verified experimentally. However, there is a lack of test system that can fully meet the test requirements of Lamb wave gas sensor. In this paper, a test system...
This Polyimide film has excellent electrical properties and it serves as an important insulating material which is widely used in the variable-frequency motor and wind generator. Since high temperature is a significant reason for degradation in insulation, the space charge distributions of polyimide (PI) films in high temperature condition is worth investigating. Under different temperature, the conductivity...
In biological experiments, temperature control is required to maintain cell growth, inhibit cell activity, or to trigger bio-chemical reactions [1]. In manual experiments it is very common to obtain the constant temperature source from constant temperature water baths or buckets filled with a mixture of water and ice. While these devices are able to maintain certain pre-defined temperatures, they...
In the design of ultrasonic ranging system, MCS51 singleship is used as the core component of the hardware system and the control software is used. The software is designed with advanced microcontroller programming language. Closed loop control is used to adjust the amplitude of received signal and to extract the ultrasonic propagation time. The double closed loop control technique of amplitude and...
In order to ensure the safe and economic operations of thermal power plants, heater water levels of high pressure (HP) and low pressure (LP) heaters are important process variables to be monitored in industrial alarm systems. This paper proposes multiple factors affecting heater water levels, and the ways performing the root cause analysis for corresponding alarms. Combining with the operating data...
The steelmaking-continuous casting production scheduling problem with uncertain processing time (UPT) is studied, especially for the case that the charges have complex technical routes. In order to compensate the temperature dropping of the charges and minimize the electric power cost under the time-of-use (TOU) electricity price, a left-right hybrid adjustment method based on a critical charge is...
In the aluminum electrolysis production process, the degree of superheat is an influential index of the whole process, reflecting the distribution of the physical field of the electrolytic cell, the current efficiency in the electrolytic production, and the lifespan of the electrolytic cell. Therefore, detection or identification of the superheat is significant for the production process. However,...
This paper gives a method of ultrasonic heat meter design. Heat is calculated by measuring the flow and temperature of the water in pipe. Firstly, principle of ultrasonic is adopted to measure the flow of water in this project. Then, water temperature is measured by the temperature sensor in pairs of inlet and outlet. Finally, heat released through the heat exchange system is calculated by MCU. Inlet...
The internal heat and water distributions are critical to performance and lifetime of proton exchange membrane fuel cell (PEMFC). Temperature, relative humidity (RH) and current distributions are investigated by a novel segmented cell based on multi-layered printed circuit board (PCB) flow field plates. The temperature difference between anode and cathode is clearly observed under co-flow and counter-flow...
There are a large number of switch stations that are discretely distributed in the power distribution network. Traditional inspection methods cannot detect heating hazards and partial discharge inside the switchgear in time, and cannot accurately identify the operation conditions of the switchgear. It lacks effective means to manage switch station equipment. This paper designs a rail-robot based remote...
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