Regenerative Thermomagnetic Power

1967 ◽  
Vol 89 (3) ◽  
pp. 399-405 ◽  
Author(s):  
E. L. Resler ◽  
R. E. Rosensweig
Keyword(s):  
Energy Conversion ◽  
Specific Weight ◽  
Power Devices ◽  
Electric Moment ◽  
Power Estimate ◽  
Power Cycles ◽  
The Past ◽  
Information Power ◽  
Analogous Manner ◽  
Regenerative Cycle

Thermomagnetic power devices utilize the temperature dependence of magnetic moment to convert heat into organized energy. In an analogous manner thermoelectrostatic devices would utilize changes of electric moment to perform the same function and the analysis of each can be given in a single treatment. This paper, which analytically explores new considerations relevant to these energy conversion methods, is motivated by a search for increased performance. To begin, a basis for the treatment of the thermodynamics of polarizable substances is developed in a manner that stresses material parameters. Explicit thermodynamic functions are then derived corresponding to both a simple and a realistic equation of state. With this information power cycles are devised and evaluation is made of their thermodynamic efficiencies. An optimum regenerative cycle emerges and criteria for its attainment are considered. Finally, a power estimate accounting for thermal irreversibilities predicts the possibility of low specific weight. Using more general conversion techniques than were admitted in the past, the prospect for thermomagnetic and thermoelectrostatic energy conversion is greatly improved.

scholarly journals The Energy Conversion behind Micro-and Nanomotors

Micromachines ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 222
Author(s):  
Yingmeng Wang ◽  
Yingfeng Tu ◽  
Fei Peng
Keyword(s):  
Energy Conversion ◽  
Environmental Remediation ◽  
Magnetic Energy ◽  
Mechanical Energy ◽  
External Environment ◽  
Electrical Energy ◽  
Power Devices ◽  
The Past ◽  
Targeted Drug ◽  
Application Prospects

Inspired by the autonomously moving organisms in nature, artificially synthesized micro-nano-scale power devices, also called micro-and nanomotors, are proposed. These micro-and nanomotors that can self-propel have been used for biological sensing, environmental remediation, and targeted drug transportation. In this article, we will systematically overview the conversion of chemical energy or other forms of energy in the external environment (such as electrical energy, light energy, magnetic energy, and ultrasound) into kinetic mechanical energy by micro-and nanomotors. The development and progress of these energy conversion mechanisms in the past ten years are reviewed, and the broad application prospects of micro-and nanomotors in energy conversion are provided.

Recent advances on the pre-oxidation process in electrocatalytic urea oxidation reaction

2022 ◽  
Author(s):  
Wenbin Sun ◽  
Jiechen Li ◽  
Wen Gao ◽  
Luyao Kang ◽  
Fengcai Lei ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Oxidation Reaction ◽  
Oxidation Process ◽  
Critical Role ◽  
Electrochemical Systems ◽  
The Past ◽  
Recent Advances

The electrocatalytic urea oxidation reaction (UOR) has attracted substantial research interests during the past few years owing to its critical role in coupled electrochemical systems for energy conversion, for example,...

Application of carbon fibers to flexible, miniaturized wire/fiber-shaped energy conversion and storage devices

2017 ◽  
Vol 5 (6) ◽  
pp. 2444-2459 ◽  
Author(s):  
Xin Cai ◽  
Chaoqun Zhang ◽  
Shengsen Zhang ◽  
Yueping Fang ◽  
Dechun Zou
Keyword(s):  
Energy Conversion ◽  
Carbon Fibers ◽  
Recent Progress ◽  
Power Devices ◽  
Storage Devices ◽  
Energy Conversion And Storage ◽  
And Storage

An overview of recent progress in wire/fiber-shaped flexible power devices made from micro-carbon fibers is given.

scholarly journals LOW POWER ASIC IMPLEMENTATION OF A 256 BIT KEY AES CRYPTO-PROCESSOR AT 45NM TECHNOLOGY

2014 ◽  
pp. 177-181
Author(s):  
ASHWIN R ◽  
SAROJA S BHUSARE
Keyword(s):  
Low Power ◽  
Power Dissipation ◽  
Power Reduction ◽  
Security Level ◽  
Power Gating ◽  
Power Devices ◽  
Verilog Hdl ◽  
Cell Library ◽  
The Past ◽  
Important Design

Advanced Encryption Standard (AES), has received significant interest over the past decade due to its performance and security level. Low power devices have gained extreme importance in market today. Power dissipation is one of the most important design constraints to be handled well. A key to successful power management is automatic power reduction. This enables designers to meet their power budgets without adversely affecting their productivity or time to market. In this paper power gating techniques applied on AES crypto-processor is depicted. The goal of power gating is to minimize leakage power by temporarily cutting power off to selective blocks that are not required in the current operation. This AES design was implemented using Verilog HDL and synthesized with Synopsys DC Compiler using Nangate 45 nm open cell library, physical design implementation and power gating was performed using SOC Encounter and achieved a power reduction up to 40%.

scholarly journals MODEL EXPERIMENT AND FIELD TEST OF PW-OWC TYPE WAVE POWER EXTRACTING BREAKWATER

2017 ◽  
pp. 2
Author(s):  
Kenichiro Shimosako ◽  
Taro Arikawa ◽  
Masahide Takeda ◽  
Kazuyoshi Kihara ◽  
Yasushi Hosokawa ◽  
...  
Keyword(s):  
Energy Conversion ◽  
Conversion Efficiency ◽  
Field Test ◽  
Large Scale ◽  
Energy Conversion Efficiency ◽  
Primary Energy ◽  
Wave Power ◽  
Medium Scale ◽  
The Past ◽  
Wave Power Conversion

Many research studies on wave power conversion have been conducted in Japan over the past 30 years, but the outgrowth of these studies have yet to be put to practical use. In this study, medium-scale and large-scale hydraulic model experiments as well as prototype field test on a new oscillating water column with a projecting wall (PW-OWC) wave power extracting breakwater were carried out in order to investigate the efficiency of energy conversion. The primary energy conversion efficiency of the PW-OWC converter is about 10% larger than that of the standard OWC type used in the medium-scale experiments. The primary energy conversion efficiency of the large scale experiments is about 20-30-% smaller than that of the medium scale experiments. The secondary energy conversion efficiency ranges from 0.20 to 0.42 and becomes small when the wave period is short and the wave height is large.

scholarly journals Сonditions of achieving electromagnetic motor maximal efficiency

2020 ◽  
pp. 45-59
Author(s):  
Vladimir Neyman ◽  
Keyword(s):  
Magnetic Field ◽  
Automatic Control ◽  
Energy Conversion ◽  
Research Subject ◽  
Theoretical Limit ◽  
Magnetic Cycle ◽  
The Past ◽  
Conversion Mode ◽  
Maximal Efficiency ◽  
The Magnetic Field

Energy conversion modes of the electromagnetic motor when the armature is accelerated are established to be preferable with respect to maximal efficiency. A non-saturated electromagnetic motor where the armature is once accelerated in the magnetic field generated by the inductor is considered to be a research subject. New relations are obtained for the analysis of the conditions when the maximal efficiency is achieved with respect to the energy conversion mode and the elementary magnetic cycle configuration. It is shown that the efficiency of about 100 % can be theoretically achieved only if special automatic control means are used. The efficiency cannot be more than a theoretical limit of 50 % if there is no automatic control. The obtained results and conclusions for separate energy conversion modes are well agreed with the results obtained by other authors in the past.

scholarly journals The analysis of dysbacteriosis distribution in cats according to the veterinary reporting of clinics in the Moscow region

2021 ◽  
Vol 937 (2) ◽  
pp. 022018
Author(s):  
N Bugrov ◽  
P Rudenko ◽  
S Tresnitskiy ◽  
N Sapego ◽  
N Sakhno ◽  
...  
Keyword(s):  
Gastrointestinal Tract ◽  
Secondary Metabolism ◽  
Mucous Membrane ◽  
Immune Cells ◽  
Distal Part ◽  
Specific Weight ◽  
Moscow Region ◽  
The Past ◽  
Primary And Secondary Metabolism

Abstract In the distal part of the gastrointestinal tract of animals and its lumen bacteria and parietal microorganisms of the mucous membrane contribute to primary and secondary metabolism and actively interact with populations of host immune cells and influence them in their own way. Mentioned parts of the organism represent the largest, and still insufficiently studied, reservoir of microbiota. Therefore, the analysis of the specific weight of dysbacteriosis in cats, the study of the etiology and features of the course, as well as an attempt to classify this syndrome in cats, will allow us to develop more effective approaches to their correction. The aim of this article was to analyze the dysbacteriosis distribution in cats according to the veterinary reporting of three clinics in the Moscow region over the past five years (2016-2020). The influence of age, sex, and season on the manifestations of dysbacteriosis was revealed.

scholarly journals Improving the intrinsic activity of electrocatalysts for sustainable energy conversion: where are we and where can we go?

2021 ◽  
Author(s):  
Nitish Govindarajan ◽  
Georg Kastlunger ◽  
Hendrik H. Heenen ◽  
Karen Chan
Keyword(s):  
Energy Conversion ◽  
Sustainable Energy ◽  
Intrinsic Activity ◽  
The Past

We evaluate the improvements over the past two decades in intrinsic activity of electrocatalysts for sustainable energy conversion, and highlight opportunities from tuning the electrolyte.

scholarly journals Overview of Human Walking Induced Energy Harvesting Technologies and Its Possibility for Walking Robotics

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 86 ◽  
Author(s):  
Hu Shi ◽  
Zhaoying Liu ◽  
Xuesong Mei
Keyword(s):  
Energy Conversion ◽  
Smart Materials ◽  
Electromagnetic Induction ◽  
Mechanical Energy ◽  
Human Walking ◽  
Energy Harvest ◽  
Inertial Element ◽  
The Past ◽  
Overall Efficiency ◽  
Triboelectric Effect

This study is mainly to provide an overview of human walking induced energy harvest. Focusing on the proportion of all energy sources provided by daily activity, the available human walking induced energy is divided with respect to the generation principle. The extensive research on harvesting energy results from body vibration, inertial element, and foot press to convert into electricity is overviewed. Over the past decades, various smart materials have been employed to achieve energy conversion. Generators based on electromagnetic induction or the triboelectric effect were developed and integrated. Small captured power and low overall efficiency are criticized. The concept of human walking energy harvest is extended into the wearable walking robotics using other mediums, such as fluid, to transmit power instead of electricity. By comparison, it is indicated that less energy conversion links are involved in energy regeneration of such applications and expected to guarantee less loss and higher efficiency. Meanwhile, in order to overcome the shortage of relatively low power output, comments are made that the harvester should be capable of adaptation under the condition that the mechanical energy of lower limb and feet is subject to change in different gait phases so as to maximize the collected energy.

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