scholarly journals Design and Construction of Wind Turbine-Solar Panel System Prototype for Water Supply Control

2021 ◽  
Vol 8 (2) ◽  
pp. 127
Author(s):  
A.M Shiddiq Yunus ◽  
Musrady Mulyadi ◽  
Apollo Apollo ◽  
Rifqy Rinaldi Wahid ◽  
Rima Zalsabillah
Keyword(s):  
Wind Speed ◽  
Water Supply ◽  
Electric Motor ◽  
Solar Panel ◽  
Daily Activities ◽  
Operation Performance ◽  
Financial Cost ◽  
Operation Results ◽  
System Prototype ◽  
Good Operation

Water supply is a crucial for human lives, not only for daily activities but also for secondary purposes such as for watering garden, paddy fields etc. There are many efforts of human in fulfilling their water supply needs. Most of water supply is provided by using electric motor pumps which in certain cases might increase the financial cost. In this paper, wind energy is applied to pumping water mechanically whilst it combines with solar panel which works to pump water during less wind speed condition. The micro-controller Arduino-Uno is employed to manage the collaboration operation between wind and solar panel. The design concept and construction are presented and discussed. The operation results exhibit good operation performance and could be developed for the real application.

ZERO EMISSION SAILING SHIP – CONCEPTUAL DESIGN –

2019 ◽  
Author(s):  
K Ouchi ◽  
T Omiya
Keyword(s):  
Fuel Cell ◽  
Wind Speed ◽  
Electric Motor ◽  
Hydrogen Fuel ◽  
Liquid Form ◽  
Zero Emission ◽  
Temperature And Pressure ◽  
Weak Winds ◽  
Sailing Ship ◽  
Rigid Wing

When a sailing ship which has large rigid wing sails such as the Wind Challenger Sail runs in a sufficiently windy sea, the thrust by sails is utilized to not only drive the ship at the proper speed but also to rotate an underwater turbine at significant speed and torque. The turbine generates electricity which is used for the electrolysis of water to generate hydrogen. The hydrogen is stored using toluene in the form of methylcyclohexane (MCH), which is in liquid form under normal temperature and pressure. MCH is stored in the ship's tank as hydrogen fuel. In the case of weak winds when the sails cannot generate sufficient thrust, using the hydrogen generated by the dehydrogenation device, the fuel cell works and supplies electricity to the electric motor propeller for the ship's propulsion. Thus, the ship can run at a constant speed regardless of wind speed and direction.

scholarly journals Water efficiency management systems for transport drinking water supply

2021 ◽  
Vol 900 (1) ◽  
pp. 012005
Author(s):  
D Cvelihárová ◽  
A Pauliková
Keyword(s):  
Drinking Water ◽  
Water Supply ◽  
Management System ◽  
Small World ◽  
Drinking Water Supply ◽  
Management Systems ◽  
Water Efficiency ◽  
Managerial Decision ◽  
Operation Performance ◽  
Piping Systems

Abstract The quantity of management systems standards (MSSs) is increasing every year. Standards are significantly associated with common requirements and differences for many providers of services as well as for manufactures. The drinking water supply management system is certainly one of the important services. The aim of this article is to introduce a basic application of management system (MS) using visual management. The standard applied in a model, defined as a complex solitaire or “singlet”, is the Water Efficiency Management Systems (WEMS) standard. Visualised model is built by creating clusters using a software program designated for Small World Networks. This phase is preceded by the compilation of Excel spreadsheets, where requirements are divided into common and specific ones. The resulting cluster of selected areas includes the context of organizations that provide services, considering the common and specific requirements of interesting parties, managing their leadership, planning, support, operation, performance evaluation and improvement. It could be very useful to extend the cluster by another standard depending on the needs of the drinking water supplier and the transport piping systems at the site. This approach to management systems intensively clarifies managerial decision-making processes related to the implementation of the WEMS.

OPTIMIZING THE PIPELINE DIAMETER OF A CIRCULAR SPRINKLER ACCORDING TO THE MINIMUM ENERGY CONSUMPTION CRITERION

2021 ◽  
pp. 66-71
Author(s):  
NIKOLAY V. TSUGLENOK ◽  
Keyword(s):  
Energy Consumption ◽  
Water Supply ◽  
Electric Drive ◽  
Electric Motor ◽  
Water Distribution ◽  
Minimum Energy ◽  
Operating Conditions ◽  
Total Energy Consumption ◽  
Minimum Energy Consumption ◽  
The Relationship

The authors have determined the conditions for the eff ective use of modern electrifi ed circular sprinklers in the central part of Russia. Their designs are chosen depending on the agrotechnical requirements for irrigation, including the change in the diameter of the water distribution pipeline. However, when the diameter of the pipeline changes, the load on the electric drive of the support trolleys of the sprinkler changes too, which leads to a corresponding change in energy consumption. In turn, this also changes the load of the water supply pump. The paper sets the task of determining the optimal change in the diameter of pipelines according to the criterion of minimum energy consumption, taking into account a number of assumptions. The authors have analyzed the relationship between the change in the load on the electric drive of the sprinkler support trolley and the change in the diameter of one sprinkler section pipeline. It has been found that a decrease in the diameter by 27% (for example, the transition of the diameter of 219 mm to the diameter of 159 mm) leads to a decrease in the load on the electric drive by 38%. However, this also leads to an increase in the head loss in the water supply pump motor and, respectively, to an increase in the load and energy consumption by 0.8…3.8%. The eff ect is initially obvious, but the power of the electric motor of the water supply pump is 10…25 times higher than that of the electric motor of the sprinkler support trolley. Based on the similarity coeffi cients of the irrigation components (water supply and water distribution), the relationship beteween the total energy consumption and the change in the diameter of the water distribution pipeline has been obtained. By diff erentiating the obtained function, the dependence of the value of the optimal diameter for specifi c operating conditions is also obtained. Graphs of the relationship between energy consumption and the change in diameter have been determined, taking into account some restrictions: pump supply, static pressure, and the number of the sprinkler sections.

scholarly journals Relationship between dental fluorosis and quality of life: a population based study

2005 ◽  
Vol 19 (2) ◽  
pp. 150-155 ◽  
Author(s):  
Edgard Michel-Crosato ◽  
Maria Gabriela Haye Biazevic ◽  
Edgard Crosato
Keyword(s):  
Quality Of Life ◽  
Water Supply ◽  
Dental Fluorosis ◽  
Female Gender ◽  
Population Based ◽  
Daily Activities ◽  
Cross Sectional ◽  
Significance Level ◽  
The Impact

The aim of this study was to verify the prevalence of dental fluorosis in schoolchildren aged 6 to 15 and its possible association with the impacts on their daily activities. This study is observational, cross-sectional and analytical. A total of 513 schoolchildren from the city of Pinheiro Preto, SC, took part in this study. The children were examined by three calibrated dentists, after obtaining a kappa > 0.80. To assess the prevalence of fluorosis, clinical examinations were performed according to the methodology set forth by the 4th edition of the WHO. To assess the impact of fluorosis on their daily activities, a modified OIDP (Oral Impacts on Daily Performance) was adopted. The statistical analysis used was the Chi-squared test with a 5% significance level. Of the total number of children examined, 262 (51.1%) were of the female gender and 251 (48.9%) were of the male gender. In regard to the prevalence of fluorosis, 94 (18.3%) of the children presented this condition, while 419 children (81.7%) presented a normal condition. In regard to the severity of fluorosis, few children presented severe alterations. No association was found between dental fluorosis and gender (p = 0.646), between fluorosis and socioeconomic status (p = 0.848) or between fluorosis and access to public water supply system (p = 0.198). The activities that most affected children's daily performance were: oral hygiene (40.9%) and food intake or enjoying food (40.4%). None of the daily activities could be associated with the occurrence of dental fluorosis. The prevalence of dental fluorosis was consonant with the standards found for locations with optimum fluoride content in the water supply. The questionable and very slight levels of fluorosis were the most frequently found, without influence in the quality of life of the schoolchildren participating in the study.

scholarly journals Design of portable emergency lamp utilizing thin film solar cell and inflatable case

2018 ◽  
Vol 67 ◽  
pp. 01019
Author(s):  
Andrew Bastian ◽  
Kresna Devara ◽  
Savira Ramadhanty ◽  
Tomy Abuzairi
Keyword(s):  
Thin Film ◽  
Solar Cell ◽  
Energy Harvesting ◽  
Thin Film Solar Cell ◽  
Solar Panel ◽  
Daily Activities ◽  
Li Ion Battery ◽  
Li Ion ◽  
Sun Light ◽  
Bright Mode

Lighting is an essential thing in performing daily activities and without sufficient lighting we will be difficult to see clearly. The problem is when there is no electricity, for example when we go to a cave or a forest or when there is a natural disaster that shuts down all the electricity. A portable lamp that can be charged by exposing the lamp to sun light can be one of the solution to overcome this problem. Energy Harvesting is a concept where an energy is captured, stored, and used with several technologies including solar technology. Energy Harvesting technology is used in many applications such as calculator, electrical cars or day-to-day lighting This paper will discuss about an application of solar panel in portable LED lamp, that can be used in the night and can be charged during daytime with solar panel. The solar panel, LED, and the battery is integrated in one circuit so there will be more space convenient for user. Solar emergency lamp can be used to illuminate the pathway in mountain or caves and the lamp can float in the water because it case is inflatable. Rechargeable Li-ion Battery 3.7 V 500 mAh and 10 LED SMD is used in this lamp. The proposed design is using a transparent PVC for the case of the lamp. The lamp can be turned on approximately for 4 hours from fully charged battery with 10 LED lamp. The illumination of solar portable emergency lamp was measured using lux meter. The illumination average of the solar portable emergency lamp is 17.58 lux with a deviation of 7.3 lux with medium bright mode. The illumination average of the solar portable emergency lamp is 32.85 lux with a deviation of 12.4 lux for the full bright mode. The Illumination is measured in 50 cm below the solar portable emergency lamp with 9 measured point consisting of 3 rows and 3 columns.

Research of an Improved Double-Array Trie Tree Algorithm

2014 ◽  
Vol 945-949 ◽  
pp. 2401-2404
Author(s):  
Wen Chuan Yang ◽  
Bei Jia ◽  
Qing Yi Qu
Keyword(s):  
Hash Table ◽  
Word Segmentation ◽  
Chinese Word ◽  
Chinese Word Segmentation ◽  
Operation Performance ◽  
Double Array ◽  
Single Pattern ◽  
Space Cost ◽  
Insertion Process ◽  
Good Operation

This paper presents an improved algorithm-iDAT, which is based on Double-Array Trie Tree for Chinese Word Segmentation Dictionary. Chinese word segmentation dictionary based on the Double-Array Trie Tree has higher efficiency of search, but the dynamic insertion will consume a lot of time. After initialization the original dictionary. We implement a Hash process to the empty sequence index values for base array. The final Hash table stores the sum of the empty sequence before the current empty sequence. This algorithm adopt Sunday jumps algorithm of Single Pattern Matching. With slightly and reasonable space cost increasing, iDAT reduces the average time complexity of the dynamic insertion process in Trie Tree. Practical results shows it has a good operation performance.

scholarly journals Growth rates of icicles

1994 ◽  
Vol 40 (135) ◽  
pp. 319-326 ◽  
Author(s):  
N. Maeno ◽  
L. Makkonen ◽  
K. Nishimura ◽  
K. Kosugi ◽  
T. Takahashi
Keyword(s):  
Growth Rate ◽  
Wind Speed ◽  
Water Supply ◽  
Growth Rates ◽  
Water Drop ◽  
Water Film ◽  
Freezing Process ◽  
Diameter Growth ◽  
Supply Rate ◽  
Measured Length

AbstractExperimental and theoretical studies on the growth rate of an icicle were carried out as a function of temperature, water-supply rate and wind speed; the relative humidity was also taken into account. The length of an icicle increases by the downward growth of thin dendritic crystals into the supercooled pendant water drop at the tip, and thus the growth is in the crystallographica-axis direction. The diameter, on the other hand, increases by the freezing of a water film flowing down along the icicle wall. The ratio of measured length-and diameter-growth rates was large, namely 8–32.Both growth rates increased with decreasing temperature and increasing wind speed. The increase in water-supply rate led to the decrease in the length-growth rate but no significant change in the diameter-growth rate. These results could be well described by a numerical model of icicle growth which takes account of the dendritic growth at the tip and the wall and the effective heat transfer within the turbulent boundary layer around the icicle. A formation mechanism of ribs and hollows is discussed in relation to the flowing and freezing process of water on an icicle wall.

scholarly journals Penerapan Algoritma Kalman Filter dalam Prediksi Kecepatan Angin di Kota Balikpapan

2019 ◽  
Vol 1 (2) ◽  
pp. 25-32
Author(s):  
Irma Fitria ◽  
Primadina Hasanah
Keyword(s):  
Kalman Filter ◽  
Wind Speed ◽  
Daily Activities ◽  
Strong Wind ◽  
Wind Speed Prediction ◽  
Prediction Result ◽  
Pressure Region ◽  
Speed Prediction ◽  
Kalman Filter Algorithm ◽  
Better Than

One of the climate’s elements that has an influence on daily activities is the wind speed. Wind is a movement of air that flows from high pressure to low pressure region. In the shipping and aviation, wind speed is a very important thing to predict. This is due to the wind speed is very influential on the process of the transportation activities. A strong wind can disturb the fluency of transportation. Therefore, information regarding the wind speed prediction is very important to know. In this paper, Kalman Filter algorithm is applied in the wind speed prediction by taking the case in Balikpapan. In this case, the Kalman Filter algorithm is applied to improve the result of ARIMA prediction based on error correction, so we get the prediction result, called ARIMA-Kalman Filter. Based on the simulation result in this study, it can be shown that the prediction result of ARIMA-Kalman Filter is better than ARIMA’s. This is known from the level of accuracy from ARIMA-Kalman Filter, which increased about 65% from ARIMA result.

scholarly journals Clean water supply and diarrhea incidence in Kupang

2017 ◽  
Vol 33 (10) ◽  
pp. 475
Author(s):  
Hubi Maria Padji ◽  
Sudarmadji Sudarmadji
Keyword(s):  
Wind Speed ◽  
Water Supply ◽  
Pearson Correlation ◽  
Water Discharge ◽  
Secondary Data ◽  
P Value ◽  
Clean Water ◽  
Climate Data ◽  
Diarrhea Incidence ◽  
Temperature Variable

Purpose: This study aimed to determine the relation of climate factors and the availability of clean water with the diarrhea occurrence in Kupang City from the years of 2011-2015.Methods: This study used an ecological study design with Pearson correlation with Spearman correlation tests and used secondary data consisting of diarrhea cases, water discharge, and climate data of Kupang City from 2011-2015.Results: The results of statistical analysis showed that variables that correlate with diarrhea occurrence in Kupang City were rainfall (p = 0.0001; r = -0.48), humidity lag1-3 (p = 0.000; r = -0, 5), wind speed lag2-3 (p = 0.000; r = 0,5 and clean water supply (p = 0.0002; r = - 0.47) while the air temperature variable had no correlation with diarrhea occurrence in Kupang city in 2011 -2015 (p value > 0.05).Conclusion: Based on the research results, it was concluded that the variables of rainfall, humidity lag1-3, wind speed lag2-3 and availability of clean water were correlated with the incidence of diarrhea in Kupang City from the years of 2011-2015.

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