scholarly journals Power Measurement by Calorimetric Method Using Water Infrequency Range Between 1.7 Mhz To 3 Mhz

2018 ◽  
Vol 7 (3.32) ◽  
pp. 106 ◽  
Author(s):  
F Shokrollahi ◽  
K K. Lau ◽  
W H. Tay ◽  
L S. Lai
Keyword(s):  
Electrical Power ◽  
Power Measurement ◽  
Chemical Effect ◽  
Calorimetric Method ◽  
Liquid Volume ◽  
Co2 Absorption ◽  
Ultrasonic Power ◽  
Absorption Process ◽  
Ultrasound Technique ◽  
Physical And Chemical

Absorption is one of the most established processes for CO2 capturing. However, the current technologies used in this process suffer from several drawbacks. Meanwhile, the ultrasound technique is proposed as a new alternative technology to assist the CO2 absorption process due to both its physical and chemical effects. Yet, the chemical effect is still under developments. Between all the influencing parameters, the ultrasonic power and the frequency are the vital key parameters to investigate sonochemical effects during the CO2    absorption process. The aim of this paper is to measure the ultrasonic power of an ultrasonic vessel. The total electrical power measured by using the voltage and the flow. Simultaneously, the ultrasonic power determined by using the calorimetric method. The measurements were done by using water with different volumes and repeated for three different frequencies. The results showed that almost 51% of the electrical power converted into the ultrasonic power and were independent of liquid volume.  

scholarly journals Development of high ultrasonic power measurement technique by calorimetric method using water as heating elements for high ultrasonic power standard

2015 ◽  
Vol 36 (5) ◽  
pp. 445-448 ◽  
Author(s):  
Takeyoshi Uchida ◽  
Tsuneo Kikuchi ◽  
Masahiro Yoshioka ◽  
Youichi Matsuda ◽  
Ryuzo Horiuchi
Keyword(s):  
Measurement Technique ◽  
Power Measurement ◽  
Calorimetric Method ◽  
Ultrasonic Power ◽  
Power Standard

Wireless Power Transmission Using Ultrasonic Guided Waves – Electric Circuit Measurement and Simulation

2012 ◽  
Vol 518 ◽  
pp. 445-454 ◽  
Author(s):  
Aleksander Kural ◽  
Rhys Pullin ◽  
C.A. Featherston ◽  
J. Lees ◽  
J. Naylon ◽  
...  
Keyword(s):  
Guided Waves ◽  
Power Transmission ◽  
Lamb Waves ◽  
Circuit Simulation ◽  
Electrical Power ◽  
Electric Circuit ◽  
Power Measurement ◽  
Ultrasonic Power ◽  
Measurement Instruments ◽  
Optimum Approach

A project investigating the possibility to transmit electrical power (several mW) along the structure of an aircraft by using an intermediate medium of ultrasonic Lamb waves is being carried out at Cardiff University in conjunction with Airbus. This power supply method is aimed at wireless, surface-bonded sensor packages, primarily for the aircraft structural health monitoring (SHM) applications. It is expected to replace conventional batteries or energy harvesting devices. This paper presents methods of piezoelectric transducer characterisation, electric power measurement and electric circuit simulation that were developed in support of the ultrasonic power transmission project. The unique combination of low power and a high AC frequency range (up to 200 kHz) precluded the use of conventional power measurement instruments and called for a tailored system and software to be developed. Two approaches were developed: one relying on the measurement of the ultrasonic transducers impedance characteristics and their subsequent use in a circuit simulation; and another relying on the direct measurement of voltage waveforms in the power transmission setup. The two methods were found to be capable of producing closely matching results up to 300 kHz. Results of early power transmission trials are also presented. The optimum approach resulted in 1 mW of power transmission over a distance of 74 cm in a 1.5 mm thick aluminium plate.

Research Trends of Carbon Dioxide Capture using Ionic Liquids and Aqueous Amine-Ionic Liquids Mixtures

2016 ◽  
Vol 13 (1) ◽  
pp. 53
Author(s):  
Siti Nabihah Jamaludin ◽  
Ruzitah Mohd Salleh
Keyword(s):  
Ionic Liquids ◽  
Co2 Capture ◽  
Membrane Separation ◽  
Carbon Dioxide Capture ◽  
Global Climate ◽  
Research Trends ◽  
Co2 Absorption ◽  
Absorption Process ◽  
Chemical Absorption ◽  
Factors Influencing

Anthropogenic CO2 emissions has led to global climate change and widely contributed to global warming since its concentration has been increasing over time. It has attracted vast attention worldwide. Currently, the different CO2 capture technologies available include absorption, solid adsorption and membrane separation. Chemical absorption technology is regarded as the most mature technology and is commercially used in the industry. However, the key challenge is to find the most efficient solvent in capturing CO2. This paper reviews several types of CO2 capture technologies and the various factors influencing the CO2 absorption process, resulting in the development of a novel solvent for CO2 capture.

Research on Intelligent Power Management System Based on CAN Bus

2014 ◽  
Vol 539 ◽  
pp. 669-673
Author(s):  
Xie Hong
Keyword(s):  
Power Management ◽  
Management System ◽  
Can Bus ◽  
Electrical Power ◽  
Electricity Consumption ◽  
Power Measurement ◽  
Conversion Function ◽  
Management Level ◽  
Field Level ◽  
Energy Metering

This paper analyzes the actual situation of the electricity management about student apartments, and design intelligent energy student housing management system based on CAN bus. The system uses the field level, the underlying management level and upper management level three management systems. Field level with a dedicated energy metering chip AD7755 and STM32F103 microcontroller with A/D conversion function as the core, to achieve real-time power measurement; via CAN bus timing or random read live energy data for monitoring electricity consumption of the apartment, investigate abnormal electricity, thus effectively limiting the students to use electrical power to achieve the modernization and automation of power management solutions student apartments.

Accuracy optimization method of ultrasonic power measurement system based on acousto-optic effect

2021 ◽  
Author(s):  
Ben Shen ◽  
Baoshan Zeng ◽  
Xiaojian Liu ◽  
Chenzefang Feng ◽  
Zhou Hu ◽  
...  
Keyword(s):  
Measurement System ◽  
Optimization Method ◽  
Power Measurement ◽  
Ultrasonic Power

scholarly journals Energy Modeling and Power Measurement for Mobile Robots

Energies ◽  
2018 ◽  
Vol 12 (1) ◽  
pp. 27 ◽  
Author(s):  
Linfei Hou ◽  
Liang Zhang ◽  
Jongwon Kim
Keyword(s):  
Control System ◽  
Energy Consumption ◽  
Mobile Robot ◽  
Mobile Robots ◽  
Electrical Power ◽  
Energy Model ◽  
Energy Modeling ◽  
Power Measurement ◽  
Sensor System ◽  
System Control

To improve the energy efficiency of a mobile robot, a novel energy modeling method for mobile robots is proposed in this paper. The robot can calculate and predict energy consumption through the energy model, which provides a guide to facilitate energy-efficient strategies. The energy consumption of the mobile robot is first modeled by considering three major factors: the sensor system, control system, and motion system. The relationship between the three systems is elaborated by formulas. Then, the model is utilized and experimentally tested in a four-wheeled Mecanum mobile robot. Furthermore, the power measurement methods are discussed. The energy consumption of the sensor system and control system was at the milliwatt level, and a Monsoon power monitor was used to accurately measure the electrical power of the systems. The experimental results showed that the proposed energy model can be used to predict the energy consumption of the robot movement processes in addition to being able to efficiently support the analysis of the energy consumption characteristics of mobile robots.

scholarly journals Effect of Acid Catalysts on CO2 Absorption Process by Mixed Amines

2017 ◽  
Vol 114 ◽  
pp. 1514-1522
Author(s):  
Wayuta Srisang ◽  
Priscilla Anima Osei ◽  
Benjamin Decardi-Nelson ◽  
Ananda Akachuku Paitoon Tontiwachwuthikul ◽  
Raphael Idem
Keyword(s):  
Co2 Absorption ◽  
Acid Catalysts ◽  
Absorption Process

scholarly journals Peter Neil Temple Wells CBE. 19 May 1936—22 April 2017

2019 ◽  
Vol 66 ◽  
pp. 463-477
Author(s):  
Hywel R. Thomas
Keyword(s):  
Imaging Techniques ◽  
Water Immersion ◽  
Malignant Tumour ◽  
General Purpose ◽  
Power Measurement ◽  
Ultrasonic Power ◽  
Non Invasive ◽  
Surgical Tool ◽  
The 1960S ◽  
Safety Guidelines

Peter Wells will be remembered internationally for his many outstanding contributions in the field of medical ultrasound. He pioneered the development of non-invasive imaging techniques in the development of ultrasonics as a diagnostic and surgical tool. He was the originator and developer of instruments for ultrasonic surgery and ultrasonic power measurement, as well as the two-dimensional, articulated-arm ultrasonic general purpose scanner and the water-immersion ultrasonic breast scanner. He demonstrated ultrasonic-pulsed Doppler range-gating, and was the discoverer of the ultrasonic Doppler signal characteristic of malignant tumour neovascularization. He investigated ultrasonic bioeffects and formulated ultrasonic safety guidelines and conditions for prudent use of ultrasonic diagnosis. His outstanding and sustained achievements in the medical applications of ultrasound extend continuously from the 1960s until a few days before his death at the age of 80. Anyone who has ever benefited from an ultrasound procedure owes a debt of gratitude to Peter Wells.

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