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Journal articles on the topic 'Heat output from the switchgear'

Author: Grafiati

Published: 28 June 2021

Last updated: 29 July 2025

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1

Zhaochuang Zhang. "Research on the Application of Multi-Physics Field Coupling Simulation in the Analysis of Temperature Field of 500kv GIS Circuit Breaker." Journal of Electrical Systems 20, no. 6s (2024): 630–37. http://dx.doi.org/10.52783/jes.2716.

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Gas insulated switchgear (GIS) is a crucial part of any electrical infrastructure. Overheating the conductor on the GIS busbar would reduce the effectiveness of the insulating gas and shorten the life of the device. We then maximize output by fine-tuning the busbar's rotation angle, central distance, and conductor thickness. Dependable electrical systems always include gas insulated transmission lines (GIL) and gas insulated switchgear (GIS). Because of their reduced total cost and greater efficiency in terms of both space use and power transmission, GILs are gradually replacing conventional o

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2

Yu, Hong, Maoyong Cao, Tanbo Zhu, and Fanming Liu. "Study of Heating Device for Sulfur Hexafluoride Gasification." Sensor Letters 18, no. 2 (2020): 157–63. http://dx.doi.org/10.1166/sl.2020.4201.

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Sulfur hexafluoride (SF6) gas has been used to gas-insulated switchgear (GIS) because of its insulation properties and extinguishing characteristics. The processing of liquid sulfur hexafluoride from cylinders into GIS is endothermic. The processing gas inflation always leads to decrease SF6 gas inflation speed due to the lack of heat supplement and the infiltrated moisture will stick on the GIS equipment, especially at the valve outlet. In the paper, a heater detection device for sulfur hexafluoride (SF6) steel cylinder is developed. The new heater device will monitor and display the specific

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3

Erickson, Donald C., Gopalakrishnan Anand, and Ellen Makar. "Absorption Refrigeration Cycle Turbine Inlet Conditioning." International Journal of Air-Conditioning and Refrigeration 23, no. 01 (2015): 1550003. http://dx.doi.org/10.1142/s2010132515500030.

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Ambient temperature markedly impacts combustion turbine performance. A typical aeroderivative turbine loses 25% of ISO capacity at 38°C ambient. There are two traditional options to mitigate that degradation: evaporative cooling and mechanical chilling. They boost turbine performance, but consume significant water and/or electric load. Also, the turbine requires separate anti-icing equipment for low ambient temperature operation (less than 4.4°C). This paper describes the Absorption Refrigeration Cycle Turbine Inlet Conditioning (ARCTIC) system that chills or heats the inlet air of a combustio

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4

Ishak, Sanuri, Chong Tak Yaw, Siaw Paw Koh, Sieh Kiong Tiong, Chai Phing Chen, and Talal Yusaf. "Fault Classification System for Switchgear CBM from an Ultrasound Analysis Technique Using Extreme Learning Machine." Energies 14, no. 19 (2021): 6279. http://dx.doi.org/10.3390/en14196279.

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Currently, the existing condition-based maintenance (CBM) diagnostic test practices for ultrasound require the tester to interpret test results manually. Different testers may give different opinions or interpretations of the detected ultrasound. It leads to wrong interpretation due to depending on tester experience. Furthermore, there is no commercially available product to standardize the interpretation of the ultrasound data. Therefore, the objective is the correct interpretation of an ultrasound, which is one of the CBM methods for medium switchgears, by using an artificial neural network

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Polyakov, Igor V., Randi B. Ingvaldsen, Andrey V. Pnyushkov, et al. "Fluctuating Atlantic inflows modulate Arctic atlantification." Science 381, no. 6661 (2023): 972–79. http://dx.doi.org/10.1126/science.adh5158.

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Enhanced warm, salty subarctic inflows drive high-latitude atlantification, which weakens oceanic stratification, amplifies heat fluxes, and reduces sea ice. In this work, we show that the atmospheric Arctic Dipole (AD) associated with anticyclonic winds over North America and cyclonic winds over Eurasia modulates inflows from the North Atlantic across the Nordic Seas. The alternating AD phases create a “switchgear mechanism.” From 2007 to 2021, this switchgear mechanism weakened northward inflows and enhanced sea-ice export across Fram Strait and increased inflows throughout the Barents Sea.

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Zeng, Jixiang. "Typical Partial Discharge Signal Acquisition and Feature Extraction in High Voltage Switchgear." International Journal of Computer Science and Information Technology 3, no. 3 (2024): 307–23. http://dx.doi.org/10.62051/ijcsit.v3n3.32.

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With the progress of power system technology, how to effectively evaluate the reliability of high-voltage switchgear equipment has become an important part of power grid power supply and industrial distribution. Switchgear is used in power system power generation, transmission, power distribution, power conversion and consumption play a role in switching, control or protection, voltage level in 3.6kV-550kV electrical products, usually contains a variety of switches, circuit breakers, contactors and other components. In the process of use, due to various reasons, partial discharge may occur. Pa

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7

Juma'a, Hameed, and Thamir Atyia. "Design and Implementation of multi-level inverter for PV system with various DC Sources." NTU Journal of Renewable Energy 5, no. 1 (2023): 24–33. http://dx.doi.org/10.56286/ntujre.v5i1.554.

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Multilevel inverters (MLI) are now favored over conventional transformers due to higher output voltage levels and lower harmonic distortions. In this study, a 45-level and 39-level inverter with lower power switchgear number was constructed. The 16-switch single-phase MLI inverter is generated, simulated, and used realistically. The simulation system uses a control method called sinusoidal pulse width modulation (SPWM). The output voltage from the simulation includes total harmonic distortion (THD). THD values of 45 and 39 level output voltage simulation are 2.59% and 2.98% respectively. The s

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8

Gao, Bao-Ming, Zheng-Yu Li, Jin-Wen Gao, Hao Liang, Zhi Yan, and Yi-Dan Hu. "The Simulation Study on Temperature Field Distribution of 220 kV Gas Insulated Switchgear." Journal of Nanoelectronics and Optoelectronics 16, no. 5 (2021): 797–805. http://dx.doi.org/10.1166/jno.2021.2998.

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Under working conditions, the conductive rods in the GIS flow through the power frequency alternating current. Due to the coupling effect of the magnetic field and electric field between the metal aluminum shell and the conductive rod, induced eddy currents are generated in the metal shell of the GIS. The heat generated by the current heating effect of the GIS conductive rod and the eddy current loss of the metal casing will cause the temperature rise of GIS equipment. Due to the limited volume, the heat dissipation capacity of GIS is poor. Excessive temperature rise will accelerate the insula

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9

Kapjor, Andrej, Peter Durcansky, and Martin Vantuch. "Effect of Heat Source Placement on Natural Convection from Cylindrical Surfaces." Energies 13, no. 17 (2020): 4334. http://dx.doi.org/10.3390/en13174334.

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Placement of heat source can play a significant role in final heat output, or heat source effectivity. Because of this, there is a need to analyze thermal fields of the heat exchange system by natural convection, where the description by criterion equations is desired, as the net heat output from tubes can be quantified. Based on known theoretical models, numerical methods were adapted to calculate the heat output with natural air flow around tubes, where mathematical models were used to describe the heat transfer more precisely. After validation of heat transfer coefficients, the effect of wa

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10

Fang, Weixing, Guojin Chen, Wenxin Li, et al. "A PRPD-Based UHF Filtering and Noise Reduction Algorithm for GIS Partial Discharge." Sensors 23, no. 15 (2023): 6763. http://dx.doi.org/10.3390/s23156763.

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The online detection of partial discharge (PD) in gas-insulated switchgear (GIS) is a crucial and powerful tool for maintaining their reliability. However, extracting weak discharge signals from strong disturbances is a significant challenge. The presence of noise can hamper the identification and localization of PD types, making the extraction of pure PD signals the focus of current research. This paper proposes a PRPD-based PD filtering algorithm that analyzes interference using the output information from PRPD and sets threshold parameters for noise reduction processing. This method is main

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Schell, Frederic, Richard Chukwudi Okafor, Tobias Steege, et al. "Increasing Heat Transfer from Metal Surfaces through Laser-Interference-Induced Microscopic Heat Sinks." Micromachines 14, no. 9 (2023): 1730. http://dx.doi.org/10.3390/mi14091730.

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With the increasing processing power of micro-electronic components and increasing spatial limitations, ensuring sufficient heat dissipation has become a crucial task. This work presents a microscopic approach to increasing the surface area through periodic surface structures. Microstructures with a periodic distance of 8.5 µm are fabricated via Direct Laser Interference Patterning (DLIP) on stainless steel plates with a nanosecond-pulsed infrared laser and are characterized by their developed interfacial area ratio. The optimal structuring parameters for increasing the surface area were inves

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12

Hermansen, Marcus C., and Mary Buches. "Urine Output Determination From Superabsorbent and Regular Diapers Under Radiant Heat." Pediatrics 81, no. 3 (1988): 428–31. http://dx.doi.org/10.1542/peds.81.3.428.

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The rate of water evaporation from diapers was determined by sequential weights of open and closed regular diapers and of open superabsorbent diapers in three different environments—radiant heater at 100% heater output, radiant heater at 50% heater output, and room air. In all three environments, evaporation was greatest with open regular diapers, less with open superabsorbent diapers, and least with closed regular diapers. Evaporation was greatest under the radiant heater with 100% heater output, less under the radiant heater with 50% heater output, and least in room air. An open, regular dia

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13

Elghool, Ali, Firdaus Basrawi, Hassan Ibrahim, Thamir K. Ibrahim, Shaharin A. Sulaiman, and M. Ishak. "Study on the Performance of a Thermo-Electric Generation Model with Two Different Materials of Heat Pipe-Heat Sink." MATEC Web of Conferences 225 (2018): 04009. http://dx.doi.org/10.1051/matecconf/201822504009.

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Heat sink lack of design is one reason that negatively affects the performance of thermoelectric modules. As compared to conventional cooling systems equipped with thermoelectric generators (TEG), heat pipe heat sink has various points of interest. Heat pipe heat sink is the most appropriate heat exchanger for medium temperature range under 300 °C. This paper demonstrates the effect of different materials of heat pipe-heat sink on the TEG performance. Two types of heat sinks were tested with TEG, one made from copper while the other from aluminium. The aim is to improve power output of TEG by

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14

Wu, Bisheng, Tianshou Ma, Guanhong Feng, Zuorong Chen, and Xi Zhang. "An Approximate Solution for Predicting the Heat Extraction and Preventing Heat Loss from a Closed-Loop Geothermal Reservoir." Geofluids 2017 (2017): 1–17. http://dx.doi.org/10.1155/2017/2041072.

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Approximate solutions are found for a mathematical model developed to predict the heat extraction from a closed-loop geothermal system which consists of two vertical wells (one for injection and the other for production) and one horizontal well which connects the two vertical wells. Based on the feature of slow heat conduction in rock formation, the fluid flow in the well is divided into three stages, that is, in the injection, horizontal, and production wells. The output temperature of each stage is regarded as the input of the next stage. The results from the present model are compared with

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15

Shibasaki, Manabu, Thad E. Wilson, Morten Bundgaard-Nielsen, Thomas Seifert, Niels H. Secher, and Craig G. Crandall. "Modelflow underestimates cardiac output in heat-stressed individuals." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 300, no. 2 (2011): R486—R491. http://dx.doi.org/10.1152/ajpregu.00505.2010.

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An estimation of cardiac output can be obtained from arterial pressure waveforms using the Modelflow method. However, whether the assumptions associated with Modelflow calculations are accurate during whole body heating is unknown. This project tested the hypothesis that cardiac output obtained via Modelflow accurately tracks thermodilution-derived cardiac outputs during whole body heat stress. Acute changes of cardiac output were accomplished via lower-body negative pressure (LBNP) during normothermic and heat-stressed conditions. In nine healthy normotensive subjects, arterial pressure was m

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16

Jamaldi, A., N. T. Atmoko, H. K. Hassan, and F. Fariyono. "Improving the performance of a gas stove-powered thermoelectric generator (GSPTG) by adding a fin hot side heat exchanger (F-HHX)." BIS Energy and Engineering 1 (November 10, 2024): V124013. https://doi.org/10.31603/biseeng.36.

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Utilizing waste heat into electrical energy from conventional gas stoves is possible by applying a thermoelectric generator (TEG). This research conducted a more in-depth study regarding the use of a Fin Hot Side Heat Exchanger (F-HHX) of a Gas Stove Powered Thermoelectric Generator (GSPTG) to improve the produced power output from TEG. The three models of F-HHX used in this research are short fin, long fin, and tilted fin. Four TEG are connected in a series circuit and placed on the gas stove. Measurements were made on temperature and electrical output from TEG. The energy balance calculation

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17

Soh, Donny, Sivaneasan Bala Krishnan, Jacob Abraham, Lai Kai Xian, Tseng King Jet, and Jimmy Fu Yongyi. "Partial Discharge Diagnostics: Data Cleaning and Feature Extraction." Energies 15, no. 2 (2022): 508. http://dx.doi.org/10.3390/en15020508.

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Detection of partial discharge (PD) in switchgears requires extensive data collection and time-consuming analyses. Data from real live operational environments pose great challenges in the development of robust and efficient detection algorithms due to overlapping PDs and the strong presence of random white noise. This paper presents a novel approach using clustering for data cleaning and feature extraction of phase-resolved partial discharge (PRPD) plots derived from live operational data. A total of 452 PRPD 2D plots collected from distribution substations over a six-month period were used t

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18

Muniz, Pablo Rodrigues, Priscila Ribeiro Amorim de Almeida, and Raquel Perim Pereira. "EFFICIENT AND ERGONOMIC LOAD FOR DIDACTIC ELECTRICAL PANELS." Revista Ifes Ciência 4, no. 1 (2018): 1–8. http://dx.doi.org/10.36524/ric.v4i1.321.

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Infrared thermography allows to detect defects even incipient, reducing maintenance costs and shutdown time. To accordingly perform the infrared inspection, the operator must be capacitated and well trained. There is difficulty nowadays in teaching thermographic inspection due to the lack of didactic equipment for this purpose. For that reason, a prototype set of switchgear was developed to be used as a didactic resource for teaching-learning infrared thermography applied to the predictive maintenance of electric installation in classrooms. Typically, an association of resistors as a load is u

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19

Xinchun Li, Zhongwei Wang, and Zhongwei Wang. "Performance parameters analysis of an organic Rankine cycle for power generation from the heat of cooling scramjet." International Journal of Science and Research Archive 1, no. 2 (2020): 009–21. http://dx.doi.org/10.30574/ijsra.2020.1.2.0032.

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An organic Rankine cycle (ORC) for power generation system is proposed for cooling scramjet. The heat which must be taken away by fuel coolant from cooling scramjet is converted to other forms of energy to decrease fuel coolant flow. A parametric study of an ORC power generation system has been performed. The multiplication ratio of fuel heat sink, the efficiency and output power of the system changing with the condenser outlet fuel coolant temperature are evaluated. The results show that the optimal condenser outlet fuel coolant temperature is 510K in a certain working condition, and the mult

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20

HONG, THONG DUC, QUAN PHAN THIEN NGHIEM, and TINH VAN MAI. "The experimental study on the performances of the thermoelectric generator unit affected by heat rate of exhaust system." Science & Technology Development Journal - Engineering and Technology 3, SI2 (2021): SI24—SI36. http://dx.doi.org/10.32508/stdjet.v3isi2.558.

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This study examines the effect of heat rate transferring from the exhaust system of motorcycle to the environment on the performance of the Thermoelectric Generator Unit (TGU). This heat rate is changed by attaching thermal insulation material on the outside of the exhaust system and changing the heat absorbing area of the TGU. The TGU consists of 8 thermoelectric generator modules and collects heat energy from the exhaust to produce electricity. It is attached on the custom muffler of the Suzuki Sapphire 125 and tested in the speed range from 20km/h to 50km/h. The results show that this heat

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21

Dear, Keith. "Modelling Productivity Loss from Heat Stress." Atmosphere 9, no. 7 (2018): 286. http://dx.doi.org/10.3390/atmos9070286.

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Workers exposed to high ambient temperatures, either indoors or out, work slower. The few studies that have measured this loss of productivity show a degree of consistency across widely varying settings. I develop a class of 5-parameter probability models that express productivity as a function of environmental heat and show how the method of fitting can be adapted according to the completeness of the data available. As well as modelling the mean output, it is important to also consider variation between workers, and the model presented here achieves this. The method is illustrated using three

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Sharma, V. B., and S. C. Mullick. "Calculation of Hourly Output of a Solar Still." Journal of Solar Energy Engineering 115, no. 4 (1993): 231–36. http://dx.doi.org/10.1115/1.2930055.

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An approximate method for calculation of the hourly output of a solar still over a 24-hour cycle has been studied. The hourly performance of a solar still is predicted given the values of the insolation, ambient temperature, wind heat-transfer coefficient, water depth, and the heat-transfer coefficient through base and sides. The proposed method does not require graphical constructions and does not assume constant heat-transfer coefficients as in the previous methods. The possibility of using the values of the heat-transfer coefficients for the preceding time interval in the heat balance equat

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V, Venkatesh. "Extraction and Conversion of Exhaust Heat from Automobile Engine in to Electrical Energy." International Journal of Electrical and Electronics Research 6, no. 4 (2018): 52–57. http://dx.doi.org/10.37391/ijeer.060401.

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Energy is vital for the progress of the nation and it has to be conserved in an efficient manner. Nowadays increasing worldwide problem is shortage of energy. In an Automobile out of the total heat supplied to the engine in the form of fuel, approximately 30 to 40 percent is converted into useful mechanical work and the remaining heat is expelled out as waste heat. This paper focus on the recovery and utilization of waste heat into useful electrical energy by using See back effect where in Thermoelectric Generators (TEG) are placed on the exhaust surface for converting heat directly into elect

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Kumari, Aradhana, Rahul Marathe, and Sourabh Lahiri. "Exploring outputs from concatenated stochastic heat engines." Journal of Statistical Mechanics: Theory and Experiment 2023, no. 8 (2023): 083203. http://dx.doi.org/10.1088/1742-5468/ace714.

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Abstract Recent work on the concatenation of two simple heat engines has shown that it may lead to non-monotonic variations in the efficiency and power with parameters like driving amplitudes and asymmetries in cycle periods. Motivated by this study, we investigate the effect of the concatenation between two stochastic heat engines where colloidal particles have been trapped in harmonic potentials. The stiffness parameters of each engine are varied cyclically, but with different cycle periods, with a common thermal bath that acts as a sink for the first engine but as a source for the second. W

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Wardach-Świȩcicka, Izabela, Sylwia Polesek-Karczewska, and Adam Da̧browski. "Predicting the Performance of a Helically Coiled Heat Exchanger for Heat Recovery from a Waste Biomass Incineration System." Sustainability 17, no. 2 (2025): 759. https://doi.org/10.3390/su17020759.

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Nowadays, with increasing concerns about the environment and energy security, efforts have intensified to develop effective energy generation technologies based on renewable sources that align with the principles of sustainable growth. In response to these demands, biomass-fueled furnaces have become essential components of modern combined heat and power generation systems. This work aims to predict the thermal performance of a helically coiled multi-tube heat exchanger designed to recover heat from waste biomass incineration flue gases. The working fluid used is thermal oil. The work focuses

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Ihsan, Ahmad Nur, Angga Satria Wibawa, Dafiq Ruliyono, Kevin Maulana Ibrahim, and Muhammad Alif Kindi. "Optimizing The Net Energy of Acetone Production using The Isopropyl Alcohol Dehydrogenation Process." Journal of Chemical Engineering Research Progress 1, no. 2 (2024): 240–46. https://doi.org/10.9767/jcerp.20290.

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In order to reduce the dependence on fossil fuels, acetone has emerged as an important platform chemical for various industrial applications. Acetone can be efficiently produced through the dehydrogenation of isopropanol, using metal-based catalysts with high activity and selectivity. The technology for this acetone production was simulated using Aspen HYSYS software, with operating parameters based on the reaction dynamics model for isopropanol dehydrogenation. This study evaluated the modification of the dehydrogenation process to improve energy efficiency by optimizing the heat transfer uni

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Qi, Congzheng, Zemin Ding, Lingen Chen, Yanlin Ge, and Huijun Feng. "Modeling and Performance Optimization of an Irreversible Two-Stage Combined Thermal Brownian Heat Engine." Entropy 23, no. 4 (2021): 419. http://dx.doi.org/10.3390/e23040419.

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Based on finite time thermodynamics, an irreversible combined thermal Brownian heat engine model is established in this paper. The model consists of two thermal Brownian heat engines which are operating in tandem with thermal contact with three heat reservoirs. The rates of heat transfer are finite between the heat engine and the reservoir. Considering the heat leakage and the losses caused by kinetic energy change of particles, the formulas of steady current, power output and efficiency are derived. The power output and efficiency of combined heat engine are smaller than that of single heat e

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Li, Da, Qiang Sun, Ke Sun, Guodong Zhang, Shuzhan Bai, and Guoxiang Li. "Diesel engine waste heat recovery system comprehensive optimization based on system and heat exchanger simulation." Open Physics 19, no. 1 (2021): 331–40. http://dx.doi.org/10.1515/phys-2021-0039.

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Abstract To further improve the thermal efficiency of diesel engines, a waste heat recovery system model utilizing organic Rankine cycle (ORC) is constructed and verified through system bench test and heat exchanger bench test. To recover waste heat from diesel engine exhaust, ethanol, cyclopentane, cyclohexane, R1233zd (E), and R245fa were selected for comparison. The quality of heat source, the quality of evaporator, the system output, and the system complicity were taken as variables for comparison. Analysis shows that for ORC systems without recuperator, ethanol system has the best system

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Borsukiewicz-Gozdur, Aleksandra. "Influence of heat recuperation in ORC power plant on efficiency of waste heat utilization." Archives of Thermodynamics 31, no. 4 (2010): 111–23. http://dx.doi.org/10.2478/v10173-010-0032-7.

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Influence of heat recuperation in ORC power plant on efficiency of waste heat utilization The present work is devoted to the problem of utilization of the waste heat contained in the exhaust gases having the temperature of 350 °C. Conversion of the waste heat into electricity using a power plant working with organic fluid cycles is considered. Three Organic Rankine Cycle (ORC) power plant solutions are analysed and compared: a solution with the basic, single thermodynamic conversion cycle, one with internal heat recuperation and one with external heat recuperation. It results from the analysis

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Cekdin, Cekmas, Zainuddin Nawawi, and Muhammad Faizal. "An Effort to Reduce Voltage from DC to DC Converter with a Monolithic Circuit Based on IC LM 2596." Journal of Computational and Theoretical Nanoscience 16, no. 12 (2019): 5162–65. http://dx.doi.org/10.1166/jctn.2019.8579.

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Step down regulator is a device that can reduce the more significant input voltage to a smaller output voltage. The output is stable and well regulated, although the voltage fluctuates in the recommended input voltage range. In the system using IC LM 2596, the input voltage is 40 Volt dc, and the output voltage is 30 Volt dc. The output current of 15 amperes is applied to charge a 100 Ampere hour (Ah) battery on an inverter system installed and integrated with other electronic devices. The step-down IC LM 2596 will be stable at the output current below 15 Ampere. It is especially stable at loa

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Huang, Linbin, Guoqing Chen, Xiang Xu, et al. "Recovering Low-Grade Heat from Flue Gas in a Coal-Fired Thermal Power Unit." Energies 17, no. 20 (2024): 5204. http://dx.doi.org/10.3390/en17205204.

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To achieve the goals of carbon peaking and carbon neutrality, the retrofitting of existing coal-fired power plants is crucial to achieving energy-saving and emission reduction goals. A conventional recovery system of waste heat typically occurs downstream of the air preheater, where the energy quality in flue gas is low, resulting in limited coal-saving benefits. This study proposes a scheme involving a flue gas exchanger bypassing the air preheater and low-temperature economizers, which is used to transfer the waste heat from flue gas to primary and secondary air (System I). Additionally, a h

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McCollum, Artie, Jessica Geubtner, and Ione Hunt von Herbing. "Metabolic cost of feeding in Atlantic Cod (Gadus morhua) larvae using microcalorimetry." ICES Journal of Marine Science 63, no. 2 (2006): 335–39. http://dx.doi.org/10.1016/j.icesjms.2005.10.007.

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Abstract A microcalorimeter that measures total heat output (μW) was used to determine total metabolic rate (aerobic and anaerobic) and the cost of feeding (specific dynamic action, SDA) in larval Atlantic cod (Gadus morhua) from hatching to 4 weeks post-hatch at 10°C. Total heat output increased throughout development from 2.14 μW at first-feeding to 23.72 μW at 4 weeks post-hatch. SDA was determined by comparing the total heat output among unfed larvae and fed larvae simultaneously. Total heat output increased in the first 2 h after feeding with rotifers (Brachionus sp.) and Artemia, remaine

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Deepak, V. Kamble, P. Panchal Aashi, S. Makote Sujal, R. Khanjire Viren, and K. Angadi Pratik. "Generating Electricity from Waste Materials." International Journal of Innovative Science and Research Technology 8, no. 4 (2023): 962–64. https://doi.org/10.5281/zenodo.7879802.

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In this project we have used waste materials for generating electricity. In this project we have shown one electricity generating zar box which when has waste materials like plastic, paper and other, then we burn that materials in zar box and when burning starts, heat going to the heating panel converts the heat energy into electricity, then we store that electricity in battery and use that electricity for bulb glowing and many other work. This is live working idea for generating electricity by plastic and waste materials. In this project, when electricity gets stored, at that time output powe

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Budiyanto, Budiyanto, and Fadliondi Fadliondi. "The Improvement of Solar Cell Output Power Using Cooling and Reflection from Mirror." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 3 (2017): 1320. http://dx.doi.org/10.11591/ijpeds.v8.i3.pp1320-1326.

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This paper explains the experimental investigation to improve the output power of solar cell using cooling and light reflection from mirrors. The results show that by adding mirror, the current and output power of solar cell increase but the open circuit voltage and maximum power voltage decrease due to heat. By adding cooling, the open circuit voltage and the maximum power voltage are improved, so the output power also increases.

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Ganio, Matthew S., Morten Overgaard, Thomas Seifert, et al. "Effect of heat stress on cardiac output and systemic vascular conductance during simulated hemorrhage to presyncope in young men." American Journal of Physiology-Heart and Circulatory Physiology 302, no. 8 (2012): H1756—H1761. http://dx.doi.org/10.1152/ajpheart.00941.2011.

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During moderate actual or simulated hemorrhage, as cardiac output decreases, reductions in systemic vascular conductance (SVC) maintain mean arterial pressure (MAP). Heat stress, however, compromises the control of MAP during simulated hemorrhage, and it remains unknown whether this response is due to a persistently high SVC and/or a low cardiac output. This study tested the hypothesis that an inadequate decrease in SVC is the primary contributing mechanism by which heat stress compromises blood pressure control during simulated hemorrhage. Simulated hemorrhage was imposed via lower body negat

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Zalina Mat Nawi, Siti Kartom Kamarudin, and Siti Rozaimah Sheikh Abdullah. "Improve Waste Heat Recovery and Performance of Organic Rankine Cycle Analysis for Exhaust Gas from A Marine Diesel Engine Using Biofuel from Algae." Journal of Advanced Research in Applied Sciences and Engineering Technology 29, no. 3 (2023): 1–20. http://dx.doi.org/10.37934/araset.29.3.120.

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Marine diesel engines are commonly used as a propulsion system in ships. The waste heat generated from marine diesel engines is one of the key disadvantages of this system. This study aims to improve the recovery of waste heat generation. It presents the performance analysis of Organic Rankine Cycle (ORC) for exhaust gas in a marine diesel engine using different types of biofuels production methods from selected microalgae via mathematical modelling. The microalgae are from species of Synechococcus PCC 7002, Nannochloropsis oculata sp, Chlorella protothecoides, and Dunaliella sp. A marine engi

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Zhong, Xiao Xing, Yun Chen, Guo Lan Dou, and De Ming Wang. "Effect of Experimental Conditions on Parameters Derived from Micro Calorimeter Measurements of Coal Low-Temperature Oxidation." Applied Mechanics and Materials 316-317 (April 2013): 850–53. http://dx.doi.org/10.4028/www.scientific.net/amm.316-317.850.

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C80 micro calorimeter was applied to investigate the initial heat release temperature and heat output at low-temperature oxidation process of Kabuliang anthracite coal under the experimental conditions of different coal sample mass, different temperature rising rates and different gas flow, and analyzed the effect of experimental conditions on test results. The results indicate that the coal sample mass and temperature rising rate affect measurement results, while there is no effect of gas flow. Under the same experimental condition, a higher temperature rising rate leads to a higher initial h

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Kim, Yeongmin, Muhammad Uzair Mehmood, Hyun Joo Han, Yu Jin Kim, Seung Jin Oh, and Sang-Hoon Lim. "Reclaiming Power Potential from Low Temperature Waste Heat by Thermomagnetic Heat Engines." Energies 15, no. 8 (2022): 2817. http://dx.doi.org/10.3390/en15082817.

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Thermomagnetic heat engines were designed, constructed, and tested, where numbers of gadolinium (Gd) blocks were used to exploit low temperature waste heat. Gadolinium is a rare earth material whose magnetic property changes with temperature, altering between ferromagnetic and paramagnetic. A motion develops in the thermomagnetic heat engine as Gd blocks are exposed to different temperatures causing changes in their magnetic property. A change in the magnetic property of any Gd block is directly related to the resultant torque driving the thermomagnetic heat engine for power production. Among

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Angeline A, Anitha, Jayakumar J, and Lazarus Godson Asirvatham. "Performance Analysis of (Bi2Te3-PbTe) Hybrid Thermoelectric Generator." International Journal of Power Electronics and Drive Systems (IJPEDS) 8, no. 2 (2017): 917. http://dx.doi.org/10.11591/ijpeds.v8.i2.pp917-925.

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A theoretical analysis on the performance of (Bi2Te3-PbTe) hybrid thermoelectric generator (TEG) is presented in this paper. The effect of different performance parameters such as output voltage, output current, output power, maximum power output, open circuit voltage, Seebeck co-efficient, electrical resistance, thermal conductance, figure of merit, efficiency, heat absorbed and heat removed based on maximum conversion and power efficiency have been analyzed by varying the hot side temperature up to 350oC and by varying the cold side temperature from 30oC to 150oC. The results showed that a m

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Kurniawan, Aries Aditya, and Aqli Mursadin. "ANALISIS EFISIENSI BOILER UNIT 2 DAN 4 DI PT. PLN (PERSERO) WIL. KALSELTENG SEKTOR PLTU ASAM-ASAM." Scientific Journal of Mechanical Engineering Kinematika 4, no. 1 (2019): 77–85. http://dx.doi.org/10.20527/sjmekinematika.v4i1.54.

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Boiler is a tool used to produce steam / steam for various purposes. The water in the boiler is heated by heat from the fuel combustion (other heat source) resulting in heat transfer from the heat source to the water causing the water to become hot or transformed into steam. Direct Methods Also known as "input-output method" because this method requires only output / output (steam) and heat input / fuel (fuel) for efficiency evaluation. From the results of boiler efficiency study from August 8, 2017 to August 17, 2017 with a total average - unit 4 has a boiler efficiency 75.5012% higher than u

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Hakim, Imansyah Ibnu, Nandy Putra, and Mohammad Usman. "Analysis of the use of thermoelectric generator and heat pipe for waste heat utilization." E3S Web of Conferences 67 (2018): 02057. http://dx.doi.org/10.1051/e3sconf/20186702057.

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Waste heat recovery is one way to reduce the use of fossil fuels, one of them is by using thermoelectric generator to convert waste heat into Thermoelectric Generator (TEGs) is a module that can convert heat into electrical power directly, using Seebeck effect and Peltier effect as its working principle, so it can increase efficiency of energy consumption by utilizing waste heat from an instrument that generate waste heat. The focus of this research is to find the output voltage of TEG by utilizing the temperature difference on the cold side and the heat side of the TEGs. The heat side of the

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Li, Youyi, and Tianhao Tang. "Performance Analysis and Optimization of a Series Heat Exchangers Organic Rankine Cycle Utilizing Multi-Heat Sources from a Marine Diesel Engine." Entropy 23, no. 7 (2021): 906. http://dx.doi.org/10.3390/e23070906.

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Organic Rankine Cycle (ORC) is an effective way to recycle waste heat sources of a marine diesel engine. The aim of the present paper is to analyze and optimize the thermoeconomic performance of a Series Heat Exchangers ORC (SHEORC) for recovering energy from jacket water, scavenge air, and exhaust gas. The three sources are combined into three groups of jacket water (JW)→exhaust gas (EG), scavenge air (SA)→exhaust gas, and jacket water→scavenge air→exhaust gas. The influence of fluid mass flow rate, evaporation pressure, and heat source recovery proportion on the thermal performance and econo

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Curtin, N. A., and R. C. Woledge. "EFFICIENCY OF ENERGY CONVERSION DURING SINUSOIDAL MOVEMENT OF WHITE MUSCLE FIBRES FROM THE DOGFISH SCYLIORHINUS CANICULA." Journal of Experimental Biology 183, no. 1 (1993): 137–47. http://dx.doi.org/10.1242/jeb.183.1.137.

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Net work output and heat production of white myotomal muscle fibres from the dogfish were measured during complete cycles of sinusoidal movement at 12°C. The peak-to-peak movement was about 9 % of the muscle fibre length; three stimuli at 32 ms intervals were given in each mechanical cycle. The frequency of movement and the timing of the stimulation were varied for each preparation to find the optimal conditions for power output and those optimal for efficiency (the ratio of net work output to total energy output as heat+work). To achieve either maximum power or maximum efficiency, the tetanus

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Dipak S. Patil and Dhananjay K. Chaudhari. "Theoretical analysis of thermoelectric module." World Journal of Advanced Engineering Technology and Sciences 8, no. 1 (2023): 157–64. http://dx.doi.org/10.30574/wjaets.2023.8.1.0025.

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A thermoelectric generator was used to recover waste heat from a heat source, such as engine exhaust. The key elements of the thermoelectric generator are heat exchanger and thermoelectric module. Thermoelectric modules convert heat energy to electrical energy using the Seebeck effect. A temperature difference between the hot and cold sides of the thermoelectric module is required to generate electric power. A theoretical model was developed to predict thermoelectric current, voltage, and power output. A bismuth Telluride thermoelectric module was used for analysis. It was observed that the th

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Guyomar, Daniel, Gaël Sebald, Sébastien Pruvost, Mickaël Lallart, Akram Khodayari, and Claude Richard. "Energy Harvesting from Ambient Vibrations and Heat." Journal of Intelligent Material Systems and Structures 20, no. 5 (2008): 609–24. http://dx.doi.org/10.1177/1045389x08096888.

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Increasing demand in mobile, autonomous devices has made the issue of energy harvesting a particular point of interest. Systems that can be powered up by a few hundreds of microwatts can feature their own energy extraction module, making them truly self-powered. This energy can be harvested from the close environment of the device. Particularly, piezoelectric conversion is one of the most investigated fields for ambient energy harvesting. Moreover, the extraction process can be optimized by proper treatment of the piezomaterial output voltage. This article proposes a detailed explanation of th

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Li, Gang, Zilin Li, Taikun Yin, et al. "Drying biomass using waste heat from biomass ash by means of heat carrier." BioResources 17, no. 3 (2022): 5243–54. http://dx.doi.org/10.15376/biores.17.3.5243-5254.

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Agricultural and forestry biomass direct-fired power generation represents an important technology to promote low-carbon energy transition and sustainable development. To solve the problems of boiler output fluctuation caused by unstable combustion of high moisture content biomass and insufficient recovery of ash waste heat after combustion, steel heat carriers (HC) were used to absorb high-temperature ash (HTA) waste heat, and then HC was directly mixed with high moisture biomass for dewatering and drying. The thermal efficiency of waste heat recovery decreased with the increase of ash temper

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Barclay, C. J. "Efficiency of fast- and slow-twitch muscles of the mouse performing cyclic contractions." Journal of Experimental Biology 193, no. 1 (1994): 65–78. http://dx.doi.org/10.1242/jeb.193.1.65.

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The mechanical efficiency of mouse fast- and slow-twitch muscle was determined during contractions involving sinusoidal length changes. Measurements were made of muscle length, force production and initial heat output from bundles of muscle fibres in vitro at 31 degrees C. Power output was calculated as the product of the net work output per sinusoidal length cycle and the cycle frequency. The initial mechanical efficiency was defined as power output/(rate of initial heat production+power output). Both power output and rate of initial heat production were averaged over a full cycle of length c

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Khimenko, Aleksei, Dmitry Tikhomirov, Stanislav Trunov, and Aleksey Kuzmichov. "Theoretical studies of the thermal state of heat storage elements of the electric thermal storage in the modes of charging and heat output." E3S Web of Conferences 254 (2021): 07010. http://dx.doi.org/10.1051/e3sconf/202125407010.

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Theoretical studies of the thermal state of heat storage elements with air channels of various shapes in the modes of charging and heat output of the electric thermal storage (ETS) are carried out. The mathematical model of heat exchange processes adapted to the operating modes of the ETS is presented. The change in the average heat transfer coefficient in the air channels in the conditions of natural and forced convection in the modes of charging and heat output ETS, and the heat flux density in the mode of charging of the ETS from a tubular electric heating element (TEH) for heat storage ele

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Mehdi, Syed Murtuza, Maaz Akhtar, Ahmad Hussain, Dheya Shuja Alothmany, and Shahid Aziz. "CFD Study of Liquid Sodium inside a Wavy Tube for Laminar Convectors: Effect of Reynolds Number, Wave Pitch, and Wave Amplitude." Mathematical Problems in Engineering 2016 (2016): 1–7. http://dx.doi.org/10.1155/2016/6146195.

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Metallic tubes have been widely used as primary heat transfer elements in laminar convectors for domestic and aerospace heating purpose. This paper uses CFD tool to investigate the heat output and pressure drop of liquid sodium flowing inside a circular tube having a wavy profile throughout its length. The wavy tube can be utilized in laminar liquid metal convectors as basic heat transfer element. The effect of Reynolds number (500≤Re≤2000) wave pitch (25 mm≤λ≤100 mm) and wave amplitude (2 mm≤a≤6 mm) on the heat output and pressure drop has been numerically studied. Based on the CFD results im

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Ibrahim, O. M., S. A. Klein, and J. W. Mitchell. "Optimum Heat Power Cycles for Specified Boundary Conditions." Journal of Engineering for Gas Turbines and Power 113, no. 4 (1991): 514–21. http://dx.doi.org/10.1115/1.2906271.

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Optimization of the power output of Carnot and closed Brayton cycles is considered for both finite and infinite thermal capacitance rates of the external fluid streams. The method of Lagrange multipliers is used to solve for working fluid temperatures that yield maximum power. Analytical expressions for the maximum power and the cycle efficiency at maximum power are obtained. A comparison of the maximum power from the two cycles for the same boundary conditions, i.e., the same heat source/sink inlet temperatures, thermal capacitance rates, and heat exchanger conductances, shows that the Brayto

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