scholarly journals Feasibility Study of a Hydro PV Hybrid System Operating at a Dam for Water Supply in Southern Brazil

2015 ◽  
Vol 03 (09) ◽  
pp. 70-83 ◽  
Author(s):  
Luis E. Teixeira ◽  
Johan Caux ◽  
Alexandre Beluco ◽  
Ivo Bertoldo ◽  
José Antônio S. Louzada ◽  
...  
Keyword(s):  
Water Supply ◽  
Feasibility Study ◽  
Hybrid System ◽  
Southern Brazil ◽  
System Operating

Sediment pollution in an urban water supply lake in southern Brazil

2018 ◽  
Vol 191 (1) ◽  
Author(s):  
Leonardo Capeleto de Andrade ◽  
Fabrício Fernandes Coelho ◽  
Sayed M. Hassan ◽  
Lawrence A. Morris ◽  
Flávio Anastácio de Oliveira Camargo
Keyword(s):  
Water Supply ◽  
Sediment Pollution ◽  
Urban Water ◽  
Southern Brazil ◽  
Urban Water Supply

scholarly journals Potential and Feasibility Study of Hybrid Wind–Hydroelectric Power System with Water-Pumping Storage: Jordan as a Case Study

2020 ◽  
Vol 10 (9) ◽  
pp. 3332
Author(s):  
Mohammad Al-Addous ◽  
Sahil Al Hmidan ◽  
Mustafa Jaradat ◽  
Emil Alasis ◽  
Nesrine Barbana
Keyword(s):  
Renewable Energy ◽  
Feasibility Study ◽  
Hybrid System ◽  
Wind Farm ◽  
Storage System ◽  
Peak Load ◽  
Energy Systems ◽  
Cost Study ◽  
Renewable Energy Systems ◽  
Water Pumping

Periodic daily fluctuating demand for energy and power is a perceptible phenomenon, resulting in some moments of low demand for power and energy related to the huge energy comes from renewable energy systems, and some moments of peak load demand. This phenomenon, when combined with the non-stationary operation of huge capacity of renewable energy systems, results in no stability of voltage and frequency. To assure continuous network stability and to avoid energy losses from renewable energy systems that are subject to such control system, a hybrid system with energy–power storage in the form of pumped-hydro storage is considered the most suitable technically. This paper presents the design, modeling, analysis, and feasibility study of a hybrid wind and water-pumping storage system. The system was designed and analyzed for King Talal Dam (KTD), which is in Northern Jordan. The importance of this study is that it is directed mainly to Jordan and the Middle East and North Africa (MENA) region in general. The Jordanian renewable energy market is a promising arena that encourages developers, investors, engineers, and companies to develop and install pure renewable energy systems and renewable energy hybrid projects for the generation of electricity. The analysis of wind data is carried out using the “windfarm” software with 5.16 m/s as average wind speed. It is followed by the design of the hybrid system, which is simulated for a daily operation of 2–3 h as peak load hours. Based on the technical outcomes, cost study and feasibility analyses are carried out with Jordanian market prices. The total estimated annual energy production is 26,663,933 kWh from 10 MW wind farm and 5.2 MW pumping storage system. The aforementioned studies showed that a similar hybrid system is not always fully commercially feasible. However, a pure pumped-storage system proved to be technically feasible and assisting the grid. The whole project analysis determines that such a system boosts the operational stability of the grid, increases the penetration of renewable energy systems and reduces the energy import. In addition, 15,100,000 tons of CO2-equivalent is estimated as annual emissions reduction in this study.

Monitoring a Group of Hydraulic Pumps Connected to the Water Feeding System of a Civil Building

2017 ◽  
Vol 21 ◽  
pp. 474-481
Author(s):  
Nicuşor Baroiu ◽  
Virgil Gabriel Teodor ◽  
Florin Iftode
Keyword(s):  
Water Supply ◽  
Data Acquisition ◽  
Pressure Sensor ◽  
Supervisory Control ◽  
Feeding System ◽  
Centrifugal Pumps ◽  
Graphic Interface ◽  
Logic Operation ◽  
Monitoring Devices ◽  
System Operating

The paper describes the method that can be used to monitoring of a water feeding system of a civil building and its subsystems, using a graphic interface of a soft-ware pack – SCADA (Supervisory Control and data Acquisition), WinCC Flexible. The effective adjustment of the pressure of the water feeding system implies using specific elements: sensors, execution elements, programmable automatons and monitoring devices. In the paper, also is analysed the situation in which three centrifugal pumps are utilized as execution elements, a pressure sensor – to measure the pressure of the water feeding system of the consumer, three sensors that detect the presence of water in each well and a Siemens programmable automaton, from the SIMATIC S7-300 series, which controls the process and a PC for the acquisition of data and for monitoring. Thus, it presents a schematic system operating water supply, logic operation sequence control, protection, signage and display alarms

Research of the Temperature Decoupling Control for a MCFC/GT Hybrid System

2012 ◽  
Vol 614-615 ◽  
pp. 343-347
Author(s):  
Fan Yang ◽  
Hao Li ◽  
Yu Fei Wang ◽  
Hua Xue
Keyword(s):  
Hybrid System ◽  
Operating Temperature ◽  
Decoupling Control ◽  
Molten Carbonate Fuel Cell ◽  
Multivariable System ◽  
Molten Carbonate ◽  
Decoupling Method ◽  
Neural Network Pid ◽  
Carbonate Fuel Cell ◽  
System Operating

To a molten carbonate fuel cell/ gas turbine hybrid system, operating temperature which has significant influence on the performance and lifespan of system is researched. The decoupling control of multivariable system is proposed in the temperature control of a hybrid system. In the designing of decoupling controller, the intelligent decoupling method is used based on Quasi-Diagonal Recurrent Neural Network-PID. Simulation results show that the operating temperature of hybrid system can be effectively close to the desired setpoints based on the decoupling controller.

scholarly journals Waterborne diseases classification and relationship with social-environmental factors in Florianópolis city – Southern Brazil

2015 ◽  
Vol 14 (2) ◽  
pp. 340-348 ◽  
Author(s):  
M. Cesa ◽  
G. Fongaro ◽  
C. R. M. Barardi
Keyword(s):  
Water Supply ◽  
Skin Diseases ◽  
Local Population ◽  
Environmental Indicators ◽  
Water Tank ◽  
Waterborne Diseases ◽  
Southern Brazil ◽  
Population Type ◽  
Group A ◽  
Social Environmental

This study aimed to investigate and classify the occurrence of waterborne diseases in Florianópolis city, Santa Catarina State, Southern Brazil and to correlate these diseases with the following social-environmental indicators of the local population: type of water supply, adequate collection and sewage treatment, areas of flooding and domestic water tank cleaning. Reports of outpatients were analyzed for surveillance of waterborne diseases during the period of 2002 to 2009. Waterborne diseases were classified into four groups: Group A: diarrheal diseases; Group B: parasitological diseases; Group C: skin diseases and Group D: eye diseases. The diarrheal, parasitological and skin diseases were the most frequently reported. Waterborne diseases belonging to Group A in all sites were correlated with other waterborne diseases groups, which can be an indicator of the circulation of other waterborne diseases. Regarding the social-environmental indicators assessed, the most correlated with waterborne diseases were the origin and quality of the water supply, followed by inadequate collection and treatment of sewage, frequent flooding, and finally the lack of cleanliness of the water reservoir. The results highlight the need for policies aiming for improvement of the sanitation service in the maintenance of human, animal and environmental health.

Enhancement of OCT imaging by blood optical clearing in vessels – A feasibility study

2016 ◽  
Vol 5 (2) ◽  
Author(s):  
Olga Zhernovaya ◽  
Valery V. Tuchin ◽  
Martin J. Leahy
Keyword(s):  
Light Scattering ◽  
Blood Vessels ◽  
Feasibility Study ◽  
Biological Tissues ◽  
Intradermal Injection ◽  
Light Transport ◽  
Optical Clearing ◽  
Intravenous Injections ◽  
Oct Imaging ◽  
System Operating

AbstractThe results of a feasibility study of the application of PEG-300 and fructose as two independent optical clearing agents for the reduction of light scattering in biological tissues are presented.An OCT system operating at 1300 nm was used to study optical clearing effects. InThe intradermal injection of fructose in combination with the intravenous injection of PEG-300 led to a rapid optical clearing effect. In the experiments on miceThe experiments on mice have clearly demonstrated that intradermal and intravenous injections of optical clearing agents enhanced light transport through the skin and blood vessels.

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