scholarly journals Contributions to the development of a methodology for determining the flow rate

2019 ◽  
Vol 112 ◽  
pp. 02008
Author(s):  
Cristian Purece ◽  
Valeriu Panaitescu ◽  
Irina Alina Chera Anghel

The implementation of the requirements of the European Parliament Directive 2009/28 / EC requires efficient use of the water supply of a hydropower plants installation in order to obtain a higher amount of electricity by producing the same volume of water. In order to achieve efficient utilization of the energy of the water is necessary framing the operation of hydropower plants in the ranges of head course and the electric power so that the energy conversion is carried out in the optimum efficiency characteristic operation of the system. In order to determine as accurately the actual operating characteristics of a hydro-unit, in situ tests are required to determine the actual operating parameters of the hydro-unit. These parameters, the flow rate is the parameter that requires the most complex methodologies to determine. The paper presents a way of improvement but also a simplification of the methodology for in situ determination of the flow to small hydropower plants by using a mobile frame that has implemented a wireless data transmission system.

2013 ◽  
Vol 64 (4) ◽  
Author(s):  
Zainuddin Nawawi ◽  
Muhammad Abu Bakar Sidik ◽  
Mook Boon Kean ◽  
Hussein Ahmad ◽  
Zolkafle Buntat ◽  
...  

Lightning is an environmental phenomena that cause many fatalities and property destructions in Malaysia since the country is located in the high isokeraunic area. To reduce the fatalities an alert system should be developed. The alert system can consist of several Rotating Electric Field Mill sensors which are installed in spread. Data from the sensors must be gathered in a data centre building for observation,  analysis, and triggering an alert signal. Therefore, the objective of this work is to develop a data transmission system by using a wireless method. The wireless data transmission system consists of a microcontroller, voltage divider, and GSM module. Hardware and software development is carried out to achieve the objective. Furthermore, to test the transmission system a function generator is connected to the analog digital converter input of the microcontroller. By varying the magnitude of the function generator output an observation on data transmission is carried out. It is found that the magnitude of receiving data which is displayed on the website is exactly the same with the sent data. In here in lab wireless data transmission system devices and a website to observe the transmitted data from Rotating Electric Field Mill sensors has been successfully developed.


Author(s):  
Faya Oulare ◽  
Fodé Cisse ◽  
Ansoumane Sakouvogui ◽  
Amadou Sidibe ◽  
Mamby Keita

This study is a continuation of the work of evaluation and valuation of the hydro power potential of Small hydropower plants in Guinea. With a total hydroelectric potential estimated at 6000 MW, Guinea generally suffers from a lack of electrical energy, especially in rural areas where nearly 70% of the populations live and less than 15% of this population is connected to the grid. Electricity of the country, which has the negative consequence of the misuse of wood as a source of energy. Hence the need for this study, which aims to assess the hydroelectric potential of the Tokounou waterfall in Kankan prefecture. The main results obtained relate to : the turbine flow rate, the net head, the useful power, the dimensions of the loading basin, the characteristics of the penstock and the choice of turbine. Proposals for the use of the estimated hydroelectric potential have been made, which could improve the energy needs of the locality.


2018 ◽  
Vol 144 (3) ◽  
pp. 1872-1872 ◽  
Author(s):  
Sijung Yang ◽  
Omar Baltaji ◽  
Youssef M. Hashash ◽  
Andrew Singer

Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 919
Author(s):  
Eike Meyer-Kornblum ◽  
Saskia Biehl ◽  
Nancy Paetsch ◽  
Günter Bräuer

Thin-film-based smart telemetric sensors coated onto the surface of washers were developed for the measurement of normal forces in screw connections for industrial applications.


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