INFLUENCE OF COBALT CONTENT ON CURIE TEMPERATURE OF THE ALLOY Fe43+xCo29-xY8B20 WHERE x = 0 OR 5 |
Author : Kinga JEZ1 |
Abstract | Full Text |
Abstract :The paper presents the original results of studies on rapidly cooled alloys with chemical composition Fe43+xCo29-xY8B20 where x = 0 or 5. The alloys were made by sucking a liquid alloy into the copper mold. Samples were made in the shape of 10mm x 5mm x 0.5mm plates. The structure of the obtained alloys was examined by X-ray diffraction. The magnetic polarization of saturation as a function of temperature was measured using the Faraday magnetic weight. The measured curves ?0?s (T) shows one gentle inflection from the transition from ferro to paramagnetic. On the basis of the numerical analysis of the obtained curves, the Curie temperatures of the studied alloys were determined. Significant influence of cobalt content on Curie temperature of amorphous alloys was confirmed. The tests confirmed good glass ability of alloys based on FeCoBY using a relatively low cooling rate (order of 102K/s). |
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AN APPROACH TO CUSTOMIZABLE OPTIMALLY PROPORTIONED HIGH PERFORMANCE CONCRETE MIXTURES |
Author : Maxwell L. CHISALA1 |
Abstract | Full Text |
Abstract :‘Smart’ cement use in HPC mixture design that simultaneously enhances performance and sustainability has been a long-sought goal of cement concrete mixture researchers. In the present concrete mixture-response modeling study, proposed 3-parameter exponential mixture-response models were fitted to available test-performance data sets of HPC mixtures proportioned based on the best combined grade-aggregates (minimum void) to generate mixture-strength and mixture-porosity development (age-strength or porosity) profiles of HPC mixtures and deemed robust enough to yield reliable determination of rate-parameters So, Sp, Si and Po, Pp, Pi as functions of mixture-factors that permitted reliable quantification of contributions to HPC mixture performance of individual mixturefactors and optimization of mixture properties under study (over the study domain). Mixture-response trace plot (RTP) or sensitivity analysis functions were developed to construct mixture-factor envelopes that allowed optimal tailoring of HPC mixture requirements to HPC mixture performance and an important aid in designing efficient cement concrete mixtures and effectively utilizing their unique and distinctive material properties for widened and extended practical applications. The study results validated an effective HPC mixture optimization approach allowing optimized trade-offs between mutually exclusive requirements for performance (workability, strength, durability) and sustainability (the economic and efficient use of materials) and customization of available HPC formulations. |
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LIQUID CHROLINE GENERATOR FROM SEA WATER FOR SWIMMING POOL USING CELL STAINLESS PLATES COATED PLATINUM BASED ON ELECTROLYSIS |
Author : Siseerot KETKAEW1* |
Abstract | Full Text |
Abstract :This research paper presents the liquid chlorine generator from the sea water for swimming pool using the principle of ion exchange in cell electric based on electrolysis theory. For the data used in the study and experiment with the prototype and use of stainless plates coated platinum electrode. The power supply is direct current (DC) voltage 12 volt 95 ampere 1140 watts to plates as a stimulus reaction and oxidation reduction on electrode terminal each polarity. By the experiment of measuring conductivity, which is a value used in the detection of water with liquid chlorine. To compare both before and after the reaction by measuring the conductivity. And the data from this experiment will be used to create and develop the real machine to be used better in the future. |
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A STUDY ON pH ANALYZER USING ARTIFICIAL INTELLIGENCE IN WATER MANAGEMENT OF THERMAL POWER GENERATION PLANT |
Author : Juhyeong KIL1 |
Abstract | Full Text |
Abstract :pH is a very important factor that critically affects the efficiency of desulfurization facilities as well as in the generation of boiler tube scales in power plants as an indicator of hydrogen ion concentration of the aqueous solution. It is also a major item in the quality management of pure water and wastewater treatment facilities. However, it has been difficult to manage the accurate pH measurement frequently. If it is neglected, the maintenance cost is inevitably increased due to shortened life of boiler tubes while also damaging the them as well as lowering the efficiency of the desulfurization equipment and generating a hard scale. The pH meter applied to the plant is calibrated periodically by the operator using the buffer (standard solution), but when the calibration is impossible, all the pH electrodes are replaced. Therefore, it is required to develop an electrode pH meter with a self-correcting function to ensure the quality of the boiler tube with accurate pH control and improved efficiency of the whole desulfurization system. This study derives its purpose to introduce the world’s first pHbased analysis system ever created using the artificial intelligence to perform “bufferless” automatic calibration and technology operated with higher efficiency. For pH analysis, this is an essential tool for water management in domestic and overseas thermal power plants. |
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METAL MATERIAL CLEANER BY APPLIED HIGH FREQUENCY ULTRASONICS |
Author : Siseerot KETKAEW |
Abstract | Full Text |
Abstract :This research article presents metal material cleaner by applied high frequency ultrasonics is one choice to utilize the sound energy. This method is to transfer ultrasonics energy to the cleaning unit.In this research, the IC# SG3525A is used to generate frequency at 28 kHz. The IC#TLP250 is a optocoupler which is used to interface between the output of the IC#SG3525A and the input of the isolated drive circuit. The high frequency circuit is used to drive the gate of Power MOSFETs#IRFP450 in half-bridge Inverter circuit. Then, the output signal is transferred to high frequency transformer to step up the voltage. After that, the receiving A/C 350 watt drives the seven ultrasonic transducers in order to transfer electric energy to mechanical vibrating energy by the frequency of ultrasonics. In addition, there is a timekeeper to control the work duration. This metal material cleaner by ultrasonic can increase the ability of cleaning for the huge material parts and it can be used in another cleaning industry. |
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THE BEST POSITION OF PARTITION DISK RESEARCH ON THE ENERGY SAVING 2ND GENERATION SOLAR WATER HEATING TANK |
Author : Chun-Te LEE1* , Huna-Mei CHU2 |
Abstract | Full Text |
Abstract :In the recent time, because of global warming caused by the growing environmental disaster, government and non-government agencies around the world are actively involved in the implementation of energy saving and carbon reducing products and plans. Our team has targeted and improved the problem of water getting colder as it is being used. It can, as well, effectively improve the efficiency of the consumption of heat and electricity. And this solves the problem of solar water-heaters. In order to solve the weakness of the first generation water-heating tank. The second generation water-heating tank, which put a partition disk in the tankhas been invented. The partition disk likes partition wall, separating two room inside the tank. There is a aqueduct between the left room and right room. When cold water flows in the tank, it flows in right room first, and flows in left room slowly by aqueduct. This research is willing yo find the best position to set partition disk, and make it bring into maximum affect |
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