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Gotowa bibliografia na temat „HEATING COIL”

Autor: Grafiati

Data publikacji: 11 września 2023

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Artykuły w czasopismach na temat "HEATING COIL"

Samran, Santalunai, Thosdeekoraphat Thanaset i Thongsopa Chanchai. "Thermal Analysis of Inductive Coils Array against Cylindrical Material Steel for Induction Heating Applications". Applied Mechanics and Materials 330 (czerwiec 2013): 754–59. http://dx.doi.org/10.4028/www.scientific.net/amm.330.754.

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This paper presented the heating of inductive coil which is 3 elements array. The induction heating coil improve the variations heating that it is increased the system efficiency. By means of the inductive coil has the diameter of 2, 3 and 4 cm and divide the coil as 2 types. There are the inverses and reverse inductive coil arrays, with heating test by cylindrical steel material. Then, this paper considers the heating efficiency simulation of 2 types by CST EM studio 2009. In addition, the experimental of the inductor heating is use the full bridge inverter circuit, the power of 200 W at 28 kHz resonant frequency. Moreover, the distance between coils is coincided of simulation and experimental results, the inverse type at the diameter of 2 cm can be provide the maximum heater.

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Nian, Shih-Chih, Che-Wei Lien i Ming-Shyan Huang. "Experimental rapid surface heating by induction for injection molding of large LCD TV frames". Journal of Polymer Engineering 34, nr 2 (1.04.2014): 173–84. http://dx.doi.org/10.1515/polyeng-2013-0243.

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Abstract The use of electromagnetic induction heating on achieving high mold temperature has been proven to effectively improve the appearance quality of injection molded parts. However, until now, the method has only successfully been used on heating small mold surfaces. This study aims to apply the method on a large injection mold that is used for producing 42-inch LCD TV frames. With the goals of achieving heating efficiency and uniformity, the main focus in this research is designing the induction coil. Initially, three types of induction coils – a single-layered coil with currents that flow in one direction, a single-layered coil with currents that flow in opposite directions, and a two-layered coil – were compared to confirm their heating rates; the best one was then chosen. Additionally, evaluation of various induction coils was preceded with commercial simulation software that supports electromagnetic and thermal analyses. An experiment involving heating a simple workpiece with a heated area similar to that of the male mold plate of the LCD TV frames was conducted to confirm its heating rate and uniformity. Real injection molding LCD TV frames assisted with induction heating was then carried out. Experimental results depicted that: (1) a single-layered coil with currents that flow in one direction performed best; (2) that it heated the simple workpiece at a high heating rate of 5.5°C/s with reasonable temperature uniformity (standard deviation: 5.1°C); and (3) induction heating of a 42-inch LCD TV frame mold surface in practical injection molding provided a high heating rate of 4.5°C/s with favorable temperature uniformity (standard deviation: 4.0°C).

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Sai Charan, Karnati Kumar, Seshadri Reddy Nagireddy, Sumana Bhattacharjee i Aftab M. Hussain. "Design of Heating Coils Based on Space-Filling Fractal Curves for Highly Uniform Temperature Distribution". MRS Advances 5, nr 18-19 (2020): 1007–15. http://dx.doi.org/10.1557/adv.2020.17.

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AbstractHeating coils utilize the concept of resistive heating to convert electrical energy into thermal energy. Uniform heating of the target area is the key performance indicator for heating coil design. Highly uniform distribution of temperature can be achieved by using a dense metal distribution in the area under consideration, however, this increases the cost of production significantly. A low-cost and efficient heating coil should have excellent temperature uniformity while having minimum metal consumption. In this work, space-filling fractal curves, such as Peano curve, Hilbert curve and Moore curve of various orders, have been studied as geometries for heating coils. In order to compare them in an effective way, the area of the geometries has been held constant at 30 mm × 30 mm and a constant power of 2 W has been maintained across all the geometries. Further, the thickness of the metal coils and their widths have been kept constant for all geometries. Finite Element Analysis (FEA) results show Hilbert and Moore curves of order-4, and Peano curve of order-3 outperform the typical double-spiral heater in terms of temperature uniformity and metal coil length.

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WALUYO, Ratna SUSANA i Robbie KURNIADI M. "Induction Heating Stove Prototype of 130 kHz using Arduino Uno". Electrotehnica, Electronica, Automatica 70, nr 1 (15.03.2022): 39–50. http://dx.doi.org/10.46904/eea.22.70.1.1108005.

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Induction electric heating utilizes the momentum of skin effect resulting from eddy current. In this study, the eddy currents exist in coils that have been induced from the heating and skin effect occurs on the skin of coil sheath that induces heat on the workpiece. This study also discussed the design of one induction electric heating method that is rarely used in cooker’s coils that using resonant circuit of zero-voltage switching (ZVS). Typically, ZVS circuits are used on heater coils such as solenoid-shaped coils, so, in this study, there is an opportunity to utilize ZVS resonant circuit for heating on cooker coils in the form of pancake coils. The ZVS assisted the induction process in the heating control circuit. It used an Arduino Uno-based control circuit due to complete parts and compact. The microcontroller was played as the keypad and push-button input control. The sensor and display were played as the output. From the test results to determine the size of toroid transformers obtained toroid black type with a cable size about 1.5 mm solid with 10 turns. To determine the size of the coil pancake obtained air gap copper wire with a diameter of 4.7 mm (≈5 mm) with 12 turns. The average temperature rise reached 0.0815°C/s and 0.0889°C/s for the thermocouple and thermometer readings, respectively. The average heating rates were 21.4 cal/s and 81.6 cal/s, respectively for collector 1 and collector 2. The higher the temperature want to achieve, the lower the value of heat transfer efficiency. The yielded induction heating operational frequency on both channel was almost balanced at a frequency of 130-131 kHz, before shunt resistor installation. This small variation was probably cause by the choke position which was influenced by the pancake coil that was not exactly in the middle of the overall length of the coil. While, after shunt resistor installation, the yielded induction heating operational frequency was 125 kHz, which was for measurement purposes.

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Petrashev, Aleksandr I., i Larisa G. Knyazeva. "Increasing the Flow Capacity of Hoses with Electrical-Heater Coils to Supply Thickened Preservatives for Spraying". Engineering Technologies and Systems 31, nr 4 (30.12.2021): 559–76. http://dx.doi.org/10.15507/2658-4123.031.202104.559-576.

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Introduction. Anticorrosion protection of agricultural machinery working elements is provided through using pneumatic application of thickened preservatives with heating. For this purpose, a wire coil is inserted inside the preservative-supply hose and connected to a current source. It is known that the wire thickness and the coil pitch affect the hydraulic resistance to fluid flow. However, it has not been established how the diameter of the coil insert and its heating affect the flow capacity of the flexible hose channel. The purpose of the research is to increase the capacity of a flexible hose with an electrical-heater coil. For this purpose, it is necessary to determine its geometric parameters minimizing the hydraulic resistance to the thickened preservative flow and reducing the energy consumption for heating the material in the hose. Materials and Methods. It is proposed to investigate two electrical-heater coils of the same length, but of different diameter, made of steel welding wire pieces of equal length. There was developed a stand to study the influence of the inserted coil parameters on the hose hydraulic resistance. The stand was used to determine pressure losses in hoses with coils and in smooth hoses when used engine oil and thickened preservative flow through them. The flow capacity of the hose with cold and heated coils was estimated. Results. The method of heating the preservative in the hose wall layer is justified. At the same time, its flow capacity increases one and a half times with less energy consumption (2.4 times) than when heating the preservative in the central part of the hose. Under laminar flow mode, the pressure loss in the hose is 2 times lower when the coil is equal to 0.85 of the hose channel diameter than when the coil is equal to 0.67 of the channel diameter. Discussion and Conclusion. The research found the rational way of placing the electrical coil near the heated hose channel wall. At low air temperature, the reduction of the thickened preservative viscosity by heating in the hose helps to decrease the pressure loss up to 50% and increase its flow capacity by 1.4‒2.0 times. The use of a electrical-heater coil in the hose with thickened preservative will minimize energy consumption when preserving equipment on open storage sites.

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Zhang, Xiao Yan, Fang Fang Jiang, Shan Yuan Zhao, Wen Fei Tian i Xiao Hang Chen. "Experimental Study on Heat Transfer Characteristics and Pressure Drops for Water Flowing in Spiral Coil Heat Exchanger". Advanced Materials Research 732-733 (sierpień 2013): 593–99. http://dx.doi.org/10.4028/www.scientific.net/amr.732-733.593.

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The heat transfer and pressure drop characteristics for water flowing in four spiral coils with different shapes and different sizes were experimental studied. Reynolds number range from 4000 to 9000, volume flow rate range from 200 to 350 L/h and heating power range from 80-350 W. Based on the experimental results, the regularity of Reynolds number and heating power influencing on heat transfer and pressure drop characteristics was analyzed and discussed. The results indicate: the Nu increases with increasing Re, the greatest average heat transfer coefficient appears in the smaller circular spiral coil. The heat transfer coefficients increase with increasing heating power, the greatest average heat transfer coefficient also appears in the smaller circular spiral coil. The pressure drops increase with increasing Re, the pressure drop in big ellipse spiral coil is greatest. The resistance coefficients gradually decrease with increasing Re. The resistance coefficient of small circular spiral coil is always greatest, and the resistance coefficient of big circular spiral coil is smallest.

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Hofmann, Christian, Maulik Satwara, Martin Kroll, Sushant Panhale, Patrick Rochala, Maik Wiemer, Karla Hiller i Harald Kuhn. "Localized Induction Heating of Cu-Sn Layers for Rapid Solid-Liquid Interdiffusion Bonding Based on Miniaturized Coils". Micromachines 13, nr 8 (12.08.2022): 1307. http://dx.doi.org/10.3390/mi13081307.

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Considering the demand for low temperature bonding in 3D integration and packaging of microelectronic or micromechanical components, this paper presents the development and application of an innovative inductive heating system using micro coils for rapid Cu-Sn solid-liquid interdiffusion (SLID) bonding at chip-level. The design and optimization of the micro coil as well as the analysis of the heating process were carried out by means of finite element method (FEM). The micro coil is a composite material of an aluminum nitride (AlN) carrier substrate and embedded metallic coil conductors. The conductive coil geometry is generated by electroplating of 500 µm thick copper into the AlN carrier. By using the aforementioned micro coil for inductive Cu-Sn SLID bonding, a complete transformation into the thermodynamic stable ε-phase Cu3Sn with an average shear strength of 45.1 N/mm2 could be achieved in 130 s by applying a bond pressure of 3 MPa. In comparison to conventional bonding methods using conduction-based global heating, the presented inductive bonding approach is characterized by combining very high heating rates of about 180 K/s as well as localized heating and efficient cooling of the bond structures. In future, the technology will open new opportunities in the field of wafer-level bonding.

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Oar, Michael A., Cynthia H. Savage, Echoleah S. Rufer, Richard P. Rucker i Jesse A. Guzman. "Thermography of cannabis extract vaporization cartridge heating coils in temperature- and voltage-controlled systems during a simulated human puff". PLOS ONE 17, nr 1 (26.01.2022): e0262265. http://dx.doi.org/10.1371/journal.pone.0262265.

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Vaporized cannabis is believed to be safer than smoking, but when heated to excessive temperatures nearing combustion (>900 °C) harmful byproducts may form. While some cannabis extract vaporizers operate well below these high temperatures, heating coil temperatures obtained during actual use are frequently not reported and many operate at high temperatures. We report on two major objectives: 1) development of an infrared thermography method to measure heating coil temperatures in cannabis extract vaporizers during a simulated puff and 2) a comparison of temperature- to voltage- controlled cannabis extract vaporization systems during a puff. Infrared thermography was used to measure heating coil temperatures in one temperature-controlled and two voltage-controlled systems. The cartridges were modified for direct line-of-sight on the heating coils, the wick and coils were saturated with cannabis extract, and fixtures were developed to force two liters per minute air flow past the coils for the full duration of the puff allowed by the device. The voltage-controlled systems produced higher temperatures with greater variability than the temperature-controlled system. At the highest temperature setting (420 °C) the temperature-controlled system reached an average heating coil temperature of 420 ± 9.5 °C whereas the 4.0V setting on the variable voltage system reached an average temperature of 543 ± 95.9 °C and the single voltage (3.2V) system an average of 450 ± 60.8 °C. The average temperature at the lowest setting (270 °C) on the temperature-controlled system was 246 ± 5.1 °C and the variable voltage system (2.4V) was 443 ± 56.1 °C. Voltage alone was a poor indicator of coil temperature and only the temperature-controlled system consistently maintained temperatures less than 400 °C for the full puff duration. These lower temperatures could reduce the likelihood of harmful thermal degradation products and thus may reduce potential health risk to consumers when vaporizing cannabis extracts.

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Jamlus, Mohd Hanafiah Mat, i Zainal Ambri Abdul Karim. "Attaining Soot Oxidation Temperature by Inductive Coils Exposed to Electromagnetic Waves". Applied Mechanics and Materials 564 (czerwiec 2014): 304–9. http://dx.doi.org/10.4028/www.scientific.net/amm.564.304.

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This paper presents the findings in attaining soot oxidation temperature by using carbon steel coils exposed to electromagnetic waves. Soot are unburned carbon product in the exhaust gases during the combustion of diesel fuel, which are subjected to stringent emission regulations due to its harmful properties. The unburned carbon can be oxidised by heating as after-treatment strategy but in order for the oxidation to occur, it would require a temperature of not less than 600°C. In the present work, eight heating elements made from various carbon steel coil sizes were exposed to electromagnetic waves in the microwave oven cavity which heats up the coils to the oxidation temperature. Electromagnetic waves heating utilises electromagnetic radiation to induce electric field in a conductive material that causes the material to be heated. The microwave oven used has a power rating of 1000 W, with a microwave range of 2450 Mhz. Measurement of coils temperature and exposure time to electromagnetic waves were recorded and analysed. The results showed that only the coils with bigger coil loop size, i.e. 20 mm and lowest number of turns, i.e. 10 turns attained the threshold temperature of 600°C, while smaller diameter coil would accelerate the rate of heating. The findings from the research work are significant facts in the future development of in-situ exhaust gas after treatment system in reducing soot emissions.

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Ramaswamy, Hosahalli S., i Manguang Lin. "Influence of System Variables on the Heating Characteristics of Water during Continuous Flow Microwave Heating". International Journal of Microwave Science and Technology 2011 (29.10.2011): 1–10. http://dx.doi.org/10.1155/2011/264249.

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A domestic microwave oven (1000 W) was modified to permit the continuous flow of liquids run through a helical coil centrally located inside the oven cavity. Heating characteristics were evaluated by measuring inlet and outlet temperatures of coil as a function of system variables. The influence of number of turns, coil diameter, tube diameter, pitch and initial temperature were evaluated at different flow rates. The average residence time of water was computed by dividing the coil volume by the volumetric flow rate. The influence of Dean number was evaluated. Results from this study showed that (1) higher number of turns resulted in lower heating rate, lower temperature fluctuations, higher exit temperature and longer time to achieve temperature equilibrium; (2) larger tube or coil diameter gave larger coil volume causing the heating rate to decrease; (3) faster flow rates resulted in lower exit temperatures, lower temperature fluctuation, higher Dean number and slightly higher heating rate; (4) higher initial temperatures resulted in higher exit temperatures; (5) higher Dean number resulted in more uniform heating and slightly higher heating rate. Overall, the coil volume was the more dominant factor affecting heating rate as compared with flow rate and Dean number.

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Rozprawy doktorskie na temat "HEATING COIL"

Xu, Tingting. "Feasibility study of inductive heating coil with distributed resonant capacitors". Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/52897.

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Steam Assisted Gravity Drainage (SAGD) method is one of the most common methods used in the process of heavy oil recovery. However, the method is economically inefficient, inherently dependent of water availability and has some detrimental impact on the environment. Therefore the need for an efficient, economically feasible and environmental friendly solution to the existing problem is felt vehemently at the core of oil recovery industry. In the light of existing issue, electromagnetic heating technique has emerged as a promising solution and has received greater and greater attention of late. However, most of the studies (especially for inductive heating) have been limited to digital simulations and experiments primarily within the laboratory. In this thesis, preliminary investigations were carried out to confirm the feasibility of a new constructed capacitive compensated inductor coil. Design parameters of the inductor coil were computed and a test model was constructed in the lab for experimental verification of these parameters. The set up comprised a vertical drilling coil design with ferrite core inserted within, thus, creating an intensive electromagnetic field. In this design, a distributed resonating capacitor was proposed to avoid capacitor breakdown due to high voltage. Different coil winding configurations were proposed, constructed and tested by Frequency Response Analysis (FRA) to identify the resonant frequencies. The step response tests and field tests were performed with a square wave supply and were contrasted with the expected induced magnetic field modeled in MatLab. The measurements of the designed coil parameters matched the theoretically computed parameters and the experimental setup verified the advantage of using distributed capacitors, resulting is low breakdown voltage requirement. However, double-layer winding has multiple resonant frequencies and the proposed coil designs suffer from core losses core and winding copper losses. Thus, industrial application of this technology still requires further improvements.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate

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Eisenstein, Jessica A. (Jessica Ann). "Design and construction of a Helmholtz coil apparatus for nanoparticle heating". Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/36307.

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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.
Includes bibliographical references (p. 50-51).
Manipulating biomolecules can lead to better understanding how specific biological components function and can result in new therapeutic techniques. Biomolecules are manipulated by magnetically heating conductive nanoparticles attached to biomolecules within a radio frequency magnetic field generated by a coil. Currently, researchers monitor the effectiveness of this heating with UV/Visible spectroscopy. However, fluorescence spectroscopy would provide a more sensitive and versatile way to monitor the effects of magnetic heating. By using a Helmholtz coil pair, I have successfully created a coil set-up that can manipulate a sample of biomolecules within a fluorometer.
by Jessica A. Eisenstein.
S.B.

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BAKTASH, IMAN. "Modeling of Electromagnetic Heating of Multi-coil Inductors in Railway Traction Systems". Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-11026.

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Inductors are frequently used in railway electrical tractions systems in filtering and current limiting operations. Magnetic fields are generated due to the flow of large AC currents through the coils, which intend induce currents on the coils as well as the metallic components in the vicinity, causing electromagnetic heating. The heating may cause temperatures to exceed project temperature requirements and in the worst case distort the functionality of drive system. The purpose of this work is to simulate the Electromagnetic Heating effect of inductors in 3D using COMSOL Multiphysics. First a 3D CAD model of the inductor geometry is imported to COMSOL and the magnetic fields for a giving current excitation are estimated. Then the power losses are fed in to a heat flow simulation to predict the temperature distributions. Cooling is simulated by driving cool air through the heated coils and the surrounding metal objects. The temperature distributions for different current excitations and air flow velocities are estimated. Simulation is performed on conceptual project inductor model. The 3D inductor modeling approach established in this thesis work could be used to characterize the electromagnetic heating issues early in the project design phase.

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Deng, Shi-Ming. "Modelling and control of an air conditioning system with emphasis on cooling coil behaviour". Thesis, London South Bank University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303912.

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Durukan, Ilker. "Effects Of Induction Heating Parameters On Forging Billet Temperature". Master's thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608879/index.pdf.

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Induction heating is one of the efficient and modern technique for heating raw materials for hot forging process. The induction heating furnaces use electro-magnetic field to transfer energy to the metal workpiece and heat is generated inside the material. The magnetic field can be provided by using induction coil. The power supplied to induction coil, the moving speed of the billet that is called conveyor speed and the coil box hole diameter are the factors affecting the resultant temperature of the heated billet. In this study, AISI 1045 type steel billets with a diameter of Ø
30 mm and length of 100 mm have been heated in a particular induction heater. During heating, effects of different levels of power, conveyor speed and the coil boxes with different hole diameters are investigated. The 125 KW 3000 Hz induction heater which is available in METU-BILTIR Research and Application Center Forging Laboratory is used in experiments. The heating experiments are designed according to 23 Factorial Design of Experiment Method. Multiple linear regression technique is used to derive a mathematical formula to predict the temperature of the heated billet. A good correlation between the measured temperatures that are the results of different sets of induction heating parameters and the predicted temperatures that are calculated by using temperature prediction formula has been observed.

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Dowrani, Ali Akbar Gharooni. "Efficiency of air cooler coil defrost methods and the effect of these methods on the refrigeration cycle performance". Thesis, University of Liverpool, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316876.

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Hiler, Marzena M. "THE INFLUENCE OF ELECTRONIC CIGARETTE HEATING COIL RESISTANCE ON NICOTINE DELIVERY, HEART RATE, SUBJECTIVE EFFECTS, AND PUFF TOPOGRAPHY". VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5988.

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Electronic cigarette (ECIG) users can manipulate several device features including liquid nicotine concentration (mg/ml) and heating coil resistance (Ohms). One class of ECIG models, called “sub-Ohm” devices, use coils with a resistance of < 1 Ohms, lower than those observed in conventional ECIGs (e.g., ≥ 1.5 Ohms). Increasing voltage or decreasing coil resistance increases device power. Given that ECIG coil resistance and liquid nicotine concentration have not been manipulated systematically and simultaneously in clinical laboratory studies, the influence of these factors on ECIG acute effects remain unclear. The primary purpose of this study was to examine the influence of coil resistance and liquid nicotine concentration on nicotine delivery, heart rate (HR), subjective effects, puff topography, and liquid consumption. Thirty-two experienced ECIG users completed four independent laboratory sessions that differed by coil resistance (0.5Ohm or 1.5Ohm ) and liquid nicotine concentration (3 or 8 mg/ml). In each session, participants used a 4.5 V “Kanger SUBOX” loaded with 3.5 ml ECIG liquid in a 10-puff directed and 60-minute ad libitum bout. Nicotine delivery was greatest when using 8 mg+0.5Ohm combination and lowest when using the 3 mg/ml+1.5Ohm combination and HR followed a similar pattern. Abstinence symptom suppression was most pronounced for the 8 mg+0.5Ohm combination and least pronounced for the 3 mg/ml+1.5Ohm combination. Participants provided the highest ratings for pleasantness, satisfaction, and liking of harshness/irritancy and throat hit sensations for the 3 mg+0.5Ohm combination. Overall, use of ECIGs filled with 3 mg/ml nicotine concentration resulted in longer/larger puffs, increased puff frequency, and greater consumption of ECIG liquid. ECIG coil resistance, liquid nicotine concentration, and user puff topography, all of which influence ECIG nicotine delivery, should be considered together when making regulatory decisions aimed at protecting public health.

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Ertug, Muzeyyen Oya. "Computer Aided Design And Simulation Of Year Around Air Conditioning-comfort Application". Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610356/index.pdf.

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The aim of this thesis is to develop a computer program to design and simulate air conditioning-comfort application of a selected building, for a year period, on an hourly basis. In order to carry out this study, a computer program named AHUSIM.m, is prepared with Matlab computing language. The design and simulation procedure starts with preparing the inputs like indoor, outdoor design states, zone cooling and heating loads, along with the general data for conditioning-comfort equipment. The program, in light of these input data, performs the plotting of the psychrometric processes -including the design and off design processes- on psychrometric charts, air conditioning-comfort system selection and calculating the response of this selected system at varying load conditions for a year. The program also calculates the energy requirements of parts of the selected system throughout the year. Furthermore, it lists dimensions of the parts of the air conditioning-comfort unit, the outdoor supply air and total air flow rates, air and water inlet and exit states. Using numerical tools for heating, ventilating and air conditioning (HVAC) process design and simulation, can improve energy economy and comfort which are the main criteria of HVAC engineering. In such an attempt, major concern is the interaction between the comfort and energy consumption. The program, by designing the system and deciding its behavior throughout a year
provides a means of automatic control considering comfort and energy economy. This program also provides a tool for comparison of different techniques for putting limits to the relation between comfort and energy consumption.

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Nevřela, Tomáš. "Přenosný zdroj pro indukční ohřev". Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2018. http://www.nusl.cz/ntk/nusl-376939.

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The aim of this work is to realize and test a prototype portable source for induction heating of small parts. The project contains a theoretical basis of resonant circuits and induction heating. The device design is based on simulation results from the FEMM program, with which a focussing coil for induction heating has been designed. The parts of the thesis are the realization of the designed device, its putting into operation and the programming of the control.

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Fatemi-Badi, Seyed Mohammad. "Predicting the Self-Heating Potential of Coal". TopSCHOLAR®, 1985. https://digitalcommons.wku.edu/theses/2320.

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Self-heating in coal has been studied for well over one hundred years, yet there is no accurate or reliable method for predicting the potential of certain coals to undergo self-heating. Fires caused by self-heating, and eventually spontaneous combustion, have occurred in the high wall of surface mines, in underground mines, in coal stockpiles, and on trains, barges and ships. Self-heating in coal is brought about through a complex interplay of conditions depending on the specific properties of the coal as well as many external factors involved in the mining and handling of coal. In a study supported by the United States Department of Transportation and monitored by the United States Coast Guard, data on over 2000 barges of coal was incorporated into a data bank. Results from the evaluation of these data and from a barging study, in which a research crew accompanied a tow of barges from western Kentucky to the New Orleans area, were used to make recommendations to minimize self-heating in barged coal. An inexpensive adiabatic calorimeter (accelerating rate calorimeter) was constructed and used to obtain supporting laboratory data on coal samples collected in the barging study. There is very good agreement between the results obtained with the calorimeter concerning the reactivity of coals and susceptibility of the coals to undergo selfheating as would be predicted using chemical and physical data from the data bank.

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Książki na temat "HEATING COIL"

Braun, E. Self heating properties of coal. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, National Engineering Laboratory, Center for Fire Research, 1987.

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Braun, E. Self heating properties of coal. Gaithersburg, MD: U.S. Dept. of Commerce, National Bureau of Standards, National Engineering Laboratory, Center for Fire Research, 1987.

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Ralph, Moshage, i Construction Engineering Research Laboratories (U.S.), red. Central heating plant coal use handbook. [Champaign, IL]: US Army Corps of Engineers, Construction Engineering Research Laboratories, 1996.

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Branch, Canada Mines, red. The economic use of coal for steam-raising and house heating. Ottawa: J. de L. Taché, 1996.

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Leavitt, Clyde. Wood fuel to relieve the coal shortage in eastern Canada. Ottawa: Commission of Conservation, 1997.

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Nerg, Janne. Numerical modelling and design of static induction heating coils. Lappeenranta, Finland: Lappeenranta University of Technology, 2000.

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Edwards, John C. Mathematical modeling of spontaneous heating of a coalbed. Pgh. [i.e. Pittsburgh] Pa: U.S. Dept. of the Interior, Bureau of Mines, 1990.

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Edwards, John C. Mathematical modeling of spontaneous heating of a coalbed. Washington, DC: Dept. of the Interior, 1990.

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Robert, Sheng, i Construction Engineering Research Laboratories (U.S.), red. Screening and costing models for new pulverized-coal heating plants: An integrated computer-based module for the Central Heating Plant Economic Evaluation Program (CHPECON). [Champaign, IL]: US Army Corps of Engineers, Construction Engineering Research Laboratories, 1995.

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Institute, Air-conditioning and Refrigeration, red. Standard for forced-circulation air-cooled and air-heating coils. Arlington: Air-conditioning and Refrigeration Institute, 1987.

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Części książek na temat "HEATING COIL"

Gu, Yongjian. "Coil Fluid Systems". W Heating and Cooling of Air Through Coils, 153–92. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003289326-6.

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Noetscher, Gregory, Peter Serano, Ara Nazarian i Sergey Makarov. "Computational Tool Comprising Visible Human Project® Based Anatomical Female CAD Model and Ansys HFSS/Mechanical® FEM Software for Temperature Rise Prediction Near an Orthopedic Femoral Nail Implant During a 1.5 T MRI Scan". W Brain and Human Body Modelling 2021, 133–51. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-15451-5_9.

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AbstractThis medical device development tool (MDDT) is categorized as a non-clinical assessment model (NAM). This MDDT is a computational modeling and simulation tool. It can predict heating of metallic orthopedic implants with the radio frequency (RF) electromagnetic fields in the magnetic resonance imaging (MRI) coils while targeting a mid-aged and elderly female population primarily affected by osteoporosis and the associated bone fracture.This MDDT uses a high resolution anatomical female CAD (computer aided design) model coupled with the proven multiphysics finite element method (FEM) software (Ansys Workbench) to simulate the complete MRI environment. The environment is consisting of a tuned MRI coil with the given output power, detailed heterogeneous human model within the coil at the given landmark and a properly embedded metallic implant within the anatomical model to compute the extent of heating generated around the implant.Specifically, this MDDT is the in silico analog of an MRI scan for an elderly female subject with a metallic orthopedic implant at 1.5 T in a full-body birdcage RF coil.

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Kennedy, Mark William, Shahid Akhtar, Jon Arne Bakken i Ragnhild E. Aune. "Improved Short Coil Correction Factor for Induction Heating of Billets". W 3rd International Symposium on High-Temperature Metallurgical Processing, 373–82. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118364987.ch46.

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Cuiping, Lv, He Duanlian i Dou Jianqing. "Design of Coil Heat Exchanger for Remote-Storage Solar Water Heating System". W Proceedings of ISES World Congress 2007 (Vol. I – Vol. V), 2123–27. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-75997-3_432.

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Juneja, Vijay K., i Arthur J. Miller. "Use of the Submerged-Coil Heating Apparatus in the Study of Thermal Resistance of Foodborne Pathogens". W New Techniques in the Analysis of Foods, 131–41. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-5995-2_11.

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de Moraes Gomes Rosa, Maria Thereza, Leandro Paulino Júnior, Natan Mastrocollo Mota, Eric Henrique Ferreira, Luana Spósito Valamede i Daniela Helena Pelegrine Guimarães. "A Practical and Precise Method for Heating Calculus in Agitated Jacketed Vessels with Half-Pipe Coil". W Proceedings of the 6th Brazilian Technology Symposium (BTSym’20), 528–36. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75680-2_58.

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Shagiakhmetova, Elvira, Anna Romanova, Yakov Zolotonosov, Pavel Martynov i Ella Biktemirova. "Economic Efficiency Substantiation of the Use of a Sectional Coil Exchanger in an Individual Heating Point System". W Lecture Notes in Civil Engineering, 263–72. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-14623-7_23.

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Gu, Yongjian. "Heating and Cooling Coils". W Heating and Cooling of Air Through Coils, 85–120. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003289326-4.

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Flemons, Douglas. "Heating Up to Cool Down". W Creative Therapy in Challenging Situations, 70–79. New York, NY: Routledge, 2019.: Routledge, 2019. http://dx.doi.org/10.4324/9780429028687-7.

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Glanville, James O., L. H. Haley i J. P. Wightman. "Heating Processes at Coal–Liquid Interfaces". W Interfacial Phenomena in Coal Technology, 351–77. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9780367813185-13.

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Streszczenia konferencji na temat "HEATING COIL"

Mahboubi, D., i M. H. Saidi. "Optimal Behavior of Hot Water Heating Coils at Steady Conditions". W ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68455.

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Hot water heating coils are key components in air conditioning systems undergo heat transfer. The most widely used exchangers (coils) take the form of fin and tube configuration in association with the application of air conditioning systems. In this research, thermodynamic modeling and mathematical optimization of hot water heating coils at steady conditions, approaching minimum energy consumption are achieved. The modeling procedure for heating coils is done based on the log mean temperature difference (LMTD) method. The objective function for optimization is pressure drop of air crossing coil per heating load of the system. This unction comprises all thermal and geometrical parameters of the coils such as coil surface area, number of rows, fin spacing and air side pressure drop of the coil. The objective function is minimized using Lagrange multipliers method. The optimization results are composed of minimum pressure drop, optimum surface area, optimum number of rows and fin spacing. The effects of varying the heating load, fin efficiency and the surface area of the coils on optimum behavior of them are investigated as well.

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Han, W., K. Chau, Z. Zhang i C. Jiang. "Single-source multiple-coil homogeneous induction heating". W 2017 IEEE International Magnetics Conference (INTERMAG). IEEE, 2017. http://dx.doi.org/10.1109/intmag.2017.8007681.

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Lucak, J., S. Jirinec i J. Kozeny. "The behaviour of heating coil during regulation". W 2016 17th International Scientific Conference on Electric Power Engineering (EPE). IEEE, 2016. http://dx.doi.org/10.1109/epe.2016.7521755.

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Miyake, Daiki, Kazuhiro Umetani, Shota Kawahara, Masataka Ishihara i Eiji Hiraki. "High-Efficiency Solenoid Coil Structure for Induction Heating of Cylindrical Heating Object". W 2022 IEEE 31st International Symposium on Industrial Electronics (ISIE). IEEE, 2022. http://dx.doi.org/10.1109/isie51582.2022.9831459.

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Mazursky, Alex J., Hee-Chang Park, Sung-Hyuk Song i Jeong-Hoi Koo. "Multiphysics Modeling and Parametric Analysis of an Inductor for Heating Thin Sheet Materials". W ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-88676.

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Over the past two decades, induction heating technology has begun to replace conventional heating methods in manufacturing due to its ability to rapidly and uniformly heat conductive materials. This advancement has made induction heating very attractive to a wide range of industries, including applications in which thin sheet geometries are used (sheet thickness < 10 mm). According to preliminary testing, conventional coil geometries cannot efficiently heat thin sheet samples. Thus, the primary goal of this study is to investigate a suitable coil design for thin sheet materials and to evaluate the effects of varying coil design parameters. To this end, this project has developed a 3D Multiphysics model that includes a longitudinal induction coil and a thin sheet workpiece. Using the model, a series of parametric studies have been performed to identify the best induction coil geometry for heating of thin sheets along with suitable excitation parameters for the coil and workpiece. It was found that uniform heating is produced when the space between coils is tight. Additionally, insignificant variance in temperature uniformity was found when vertically displacing the workpiece within the coil. Parametric studies resulted in finding a cross-section geometry that reduced temperature deviation to within 1.1% across the workpiece width. The model can be used as a design tool for developing a (full-scale) prototype induction heating system.

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Sanz, Fernando, Carlos Sagues i Sergio Llorente. "Induction heating appliance with a mobile double-coil inductor". W 2014 IEEE Industry Applications Society Annual Meeting. IEEE, 2014. http://dx.doi.org/10.1109/ias.2014.6978365.

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Sinha, Dola, Atanu Bandyopadhyay, Pradip Kumar Sadhu, Nitai Pal, Swapan Paruya, Samarjit Kar i Suchismita Roy. "Optimum Construction of Heating Coil for Domestic Induction Cooker". W INTERNATIONAL CONFERENCE ON MODELING, OPTIMIZATION, AND COMPUTING (ICMOS 20110). AIP, 2010. http://dx.doi.org/10.1063/1.3516346.

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Jung-Tang Huang, Po-An Lin, Po-Chin Lin, Kuo-Yu Lee i Hou-Jun Hsu. "The development of high frequency induction heating embedded coil". W 2009 4th International Microsystems, Packaging, Assembly and Circuits Technology Conference (IMPACT). IEEE, 2009. http://dx.doi.org/10.1109/impact.2009.5382284.

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Eun-yong Shim, Sang-jung Kim, Gil-yong Choi, Chan-kyo Lee i Hyo-yol Yoo. "Development of induction heating system using transverse type heating coil for hot-rolled mill". W 2013 International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2013. http://dx.doi.org/10.1109/icems.2013.6754517.

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Li, Lin, Gracious Ngaile i Tasnim Hassan. "A Novel Hybrid Heating Method for Elevated Temperature Mechanical Testing of Miniature Specimens". W ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8852.

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The lack of robust testing systems to generate uniform elevated temperatures on specimens in material tests is hindering the advancement of small specimen testing technology (SSTT). The purpose of this study is to develop a novel hybrid heating method combining coil heating and electric-resistance specimen heating to uniformly heat micro specimens in material tests. In a hybrid heating process, two heating coils are used to heat the local temperatures on the specimen ends, and electric current is conducted through the specimen to generate Joule heat and compensate the heat transfer effects of natural convection and radiation around the specimen center area. In this way, a highly uniform temperature distribution can be generated on the specimen between the heating coils. In this study, Thermal-Electrical and Transient Thermal FEA simulations are applied to analyze the temperature distributions and preheating times on the micro specimens under coil heating, electric-resistance specimen heating, and hybrid heating respectively. According to the simulation results, it can be concluded that hybrid heating method can provide the ability to generate highly uniform elevated temperature conditions on different micro tubular specimens with short preheating times.

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Raporty organizacyjne na temat "HEATING COIL"

Hoenig, M. O. Testing of full scale ITER OHMIC heating coil conductors. Office of Scientific and Technical Information (OSTI), styczeń 1989. http://dx.doi.org/10.2172/6008190.

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Author, Not Given. Hydronic Heating Coil Versus Propane Furnace, Rehoboth Beach, Delaware (Fact Sheet). Office of Scientific and Technical Information (OSTI), styczeń 2014. http://dx.doi.org/10.2172/1118071.

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Radovinsky, A., i R. D. Jr Pillsbury. Joule heating of the ITER TF cold structure: Effects of vertical control coil currents and ELMS. Office of Scientific and Technical Information (OSTI), listopad 1993. http://dx.doi.org/10.2172/10190569.

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Kurek, Harry, i John Wagner. Development and Demonstration of a High Efficiency, Rapid Heating, Low NOx Alternative to Conventional Heating of Round Steel Shapes, Steel Substrate (Strip) and Coil Box Transfer Bars. Office of Scientific and Technical Information (OSTI), styczeń 2010. http://dx.doi.org/10.2172/970839.

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Salonvaara, Mikael, i André Desjarlais. The impact of the solar absorption coefficient of roof and wall surfaces on energy use and peak demand. Department of the Built Environment, 2023. http://dx.doi.org/10.54337/aau541650886.

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Climate change, electrification to decarbonize the building sector, and the rise of renewable energy sources have made reducing the peak demand even more important than solely reducing the overall energy use. Solar radiation can have a significant impact on the energy use of buildings. However, previous studies on solar absorption in building envelopes have focused on cool roofs. Less effort has been made to evaluate the impact of solar radiation on heat loss and gain on walls. This paper summarizes a preliminary study to estimate the magnitude of the benefit low solar absorptance surfaces have on reducing peak demand and focuses on simulating a residential building with two types of U.S. code-compliant wall structures, a standard lightweight wall assembly, and a thermally massive mass timber wall, to evaluate the impact of the solar absorption coefficient of the surfaces on the heating and cooling energy use and peak demand. This effort aimed to identify whether a more comprehensive study should be undertaken to develop further the calculation tools previously developed for estimating the energy benefits for roofing systems in the U.S. by adding a similar tool for wall assemblies. Reducing the solar absorption coefficient from 0.9 to 0.3 resulted in up to 46% lower cooling demand and a 70% increase in heating demand depending on the climate. Peak demand reductions for heating and cooling energy were similar to the reduction in heating or cooling energy use. However, the annual energy use changed up to only 12% as lowering the solar absorption coefficient reduces cooling demand but increases heating demand. Whether the total impact overall is harmful or beneficial depends on the climate and type of structure. Additionally, a cool roof calculator was used to estimate the impact of solar radiation on roofs. The learning from this study is that the exterior color and the solar absorption coefficient should be chosen based on the climate to positively impact the energy use profile and peak demand.

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Braun, Emil. Self heating properties of coal. Gaithersburg, MD: National Bureau of Standards, 1987. http://dx.doi.org/10.6028/nbs.ir.87-3554.

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Barreca, Alan, Karen Clay i Joel Tarr. Coal, Smoke, and Death: Bituminous Coal and American Home Heating. Cambridge, MA: National Bureau of Economic Research, luty 2014. http://dx.doi.org/10.3386/w19881.

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Gerjarusak, S., W. A. Peters i J. B. Howard. Coal plasticity at high heating rates and temperatures. Office of Scientific and Technical Information (OSTI), styczeń 1992. http://dx.doi.org/10.2172/7148725.

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Gerjarusak, S., W. A. Peters i J. B. Howard. Coal plasticity at high heating rates and temperatures. Office of Scientific and Technical Information (OSTI), grudzień 1990. http://dx.doi.org/10.2172/7181468.

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Gerjarusak, S., W. A. Peters i J. B. Howard. Coal plasticity at high heating rates and temperatures. Office of Scientific and Technical Information (OSTI), luty 1992. http://dx.doi.org/10.2172/5473570.

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