scholarly journals Design and analysis of wind pump for wind conditions in Pakistan

2019 ◽  
Vol 11 (9) ◽  
pp. 168781401988040 ◽  
Author(s):  
Tauseef Aized ◽  
Syed Muhammad Sohail Rehman ◽  
Sajid Kamran ◽  
Ali Hussain Kazim ◽  
Syed Ubaid ur Rehman
Keyword(s):  
Wind Speed ◽  
Power Output ◽  
Water Discharge ◽  
Research Work ◽  
Simulation Models ◽  
Energy Deficit ◽  
Ansys Fluent ◽  
Pump System ◽  
Wind Speed Data ◽  
Water Pumping

The unique thing about this research work is that it is the first comprehensive study out of all its kinds in Pakistan. Pakistan is an agricultural country and faces dearth of water resources availability for crops. This research work is very inevitable because it fulfils the water needs and also helps to minimize the energy deficit. This research article represents the means of wind speed data collection, design of wind-driven water pumping system and analysis of the design under different wind conditions in Pakistan. Wind speed data for province Punjab and Sindh are collected from Global Wind Atlas, Pakistan Meteorological Department and World Weather Online. First, design calculations have been made on the basis of analytical methods. Then proposed design is analysed using ANSYS Fluent Simulation models. Wind energy input, lift and drag on blades, rotor power output transmitted to the pump and water discharge from the pump have been calculated and verified from the simulation results. It has been shown that for any rotor size windmill produces maximum power output when angle between blade chord and axis of blade rotation is in the range of 23°–27°. Recommended height of windmill tower for 8–12 ft rotor diameter is 35–50 ft. Designed wind pump system can lift the ground water from 50 ft depth and discharge depends upon the size of windmill used. From the outcomes of the analysis, different designs having different power output and water pumping capacity have been proposed for different operating and wind conditions in the country.

Evaluation of the Power Output of a Wind Turbine With a Brimmed Diffuser Shroud in Fluctuating Flows

2007 ◽  
Author(s):  
S. Roberto Gonzalez A. ◽  
Yuji Ohya ◽  
Takashi Karasudani ◽  
Shusaku Iba ◽  
Kimihiko Watanabe
Keyword(s):  
Wind Speed ◽  
Power Plant ◽  
Wind Energy ◽  
Wind Turbine ◽  
Power Output ◽  
Alternative Energy ◽  
Fossil Fuels ◽  
Research Work ◽  
Energy Output ◽  
The World

Fossil fuels have been used extensively all over the world to satisfy energy demands. However, their availability is limited and their negative impact on the environment undeniable. Due to this, the need to develop alternative energy resources was recognized a few decades ago. Among different alternatives that have been developed, wind energy appears as a promising option to be implemented in many parts of the world. Nonetheless, its development and the cost per kW are still higher than that from fossil fuels. The intermittence of its capability to produce energy and the size of the wind power plant (as compared to a coal or nuclear power plant of the same energy output) have not made its implementation easier. In order to make wind energy more competitive and attractive to investors, new energy systems are desired. Specifically, it is desired to have a higher energy output. In this study a brimmed-diffuser shroud was incorporated into a 1 kW wind turbine. The turbine was then evaluated under fluctuating wind conditions. The experiments were conducted at the large boundary wind tunnel of Kyushu University. It is shown that power output increases for a fluctuating flow as opposed to a steady flow. The turbine power output is capable of following the changes in the wind speed accurately in the range of wind speed fluctuations tested. This is shown by correlation analysis and supported by the frequency spectrum. This study is part of a larger research work aimed at evaluating a novel wind turbine design. The current results are very encouraging. Possible wind sites of wind speed average lower than the current minimum accepted values can be exploited by using a turbine like the one evaluated in this work.

scholarly journals Performance of a prototype windmill for water pumping in Kpakungu community of Niger State Nigeria

2021 ◽  
Vol 39 (4) ◽  
pp. 1085-1092
Author(s):  
M.S. Dalero ◽  
N.A. Musa
Keyword(s):  
Wind Speed ◽  
Rural Communities ◽  
Potable Water ◽  
Performance Test ◽  
Water Discharge ◽  
Primary Source ◽  
Water Pumping ◽  
Total Head ◽  
Mean Wind Speed ◽  
Measured Wind Speed

Water is the primary source of life for mankind and one of the most basic necessities for rural development. Most rural communities in Nigeria do not have access to potable water. This research considers the provision of water to a community in Nigeria using power from wind. The design results show that a 2.076m diameter windmill is required for pumping water from borehole through a total head of 45m to meet a daily demand of 3.5m3 of water. Performance test of the horizontal axis wind pump was carried out. The lowest measured wind speed during the test was 0.4 m/s, while the corresponding water discharge flowrate was 0.032 l/s. Thehighest flowrate of 0.113 l/s was recorded at a wind speed of 2.4 m/s. Computer simulation was carried out to validate the  performance test of the prototype windmill. The results showed that water discharge is proportional to the wind speed. Keywords: Energy, Kpakungu, mean wind speed, plunger, windmill

Resolution of Circulating Water Pump Problems Caused by Low River Levels at the Neal North Generating Station

2004 ◽  
Author(s):  
Kevin Calloway ◽  
Terry Larson
Keyword(s):  
Water Discharge ◽  
Axial Flow ◽  
Water Levels ◽  
Water Pump ◽  
Pump System ◽  
Circulating Water ◽  
Water Pumping ◽  
Flow Capacity ◽  
Well Water Level ◽  
Management Changes

Low winter water levels are causing reliability problems with once-through circulating water pump systems at several coal-fired power generating plants sited along the Missouri and Mississippi Rivers. River bottom degradation and potential COE river management changes make low river levels a likely on-going problem especially during drought years currently being experienced in the Midwest. This paper outlines circulating water pumping problems that have occurred at MidAmerican Energy’s Neal North Energy Center due to low water levels in the Missouri River, and the steps taken to resolve these problems. Remedial design solutions that were either considered or implemented, such as supplemental pumps, vacuum lift systems, suction scoops, a new river water intake, and converting to a closed-loop cooling tower system, will be discussed. An in-depth discussion will be made on the supplemental pump system installed in the fall of 2002 and currently in operation on the Unit 3 river intake. Applicable permitting requirements will also be discussed. The new supplemental pump system consists of six submersible axial flow pumps mounted on the front of the existing Unit 3 intake. The total flow capacity of the six supplemental pumps is around 220,000 gpm which is discharged into the existing intake to maintain an acceptable wet well water level for the existing circulating water pump to operate. Other system components include an overhead monorail system to facilitate annual supplemental pump installation/removal, a floating ice deflector system, and a warm-water discharge splash plate. The supplemental pumps are installed and operated during winter months when river levels are low, and removed during the river navigation season when the COE maintains higher river flows.

scholarly journals Wind Energy Potential Assessment of Coastal States in South-South Nigeria Based on the Weibull Distribution Model

2018 ◽  
Vol 2 (7) ◽  
Author(s):  
Hachimenum Nyebuchi Amadi
Keyword(s):  
Wind Speed ◽  
Wind Energy ◽  
Energy Demand ◽  
Industrial Development ◽  
Energy Deficit ◽  
Distribution Model ◽  
Energy Potential ◽  
Wind Speed Data ◽  
Port Harcourt ◽  
Wind Energy Potential

Energy has since become the global index for assessment of standard of living for socio-economic and industrial development. Worldwide, energy demand is rising with increasing population. Conventional energy sources such as fossil fuels are unsustainable and environmentally-unfriendly. Alternative sources of energy such as the sun, the wind etc. that are sustainable and less harmful to the environment need be exploited to meet the ever rising demand for energy, to avoid energy deficit. This paper investigated the wind energy potential of three locations in south-south Nigeria. Wind speed data measured at 10-metres height over the period 2013-2017 obtained from the Nigerian Meteorological Agency (NiMet) for Yenagoa, Calabar and Port Harcourt were evaluated using the Weibull two-parameter probability distribution model to ascertain the wind energy potential of the respective locations. The study outcome shows that during the study period, the monthly mean wind speed varied between 1.2 m/s in November and 2.3 m/s in February for Yenagoa. The same varied between 2.2 m/s in July and 3.7 m/s in February for Calabar but ranged between 1.0 m/s in July to 1.6 m/s in February for Port Harcourt. The annual mean wind speeds for Yenagoa, Calabar and Port Harcourt were 1.74 m/s, 2.85 m/s and 1.38 m/s respectively. The annual mean power densities for Yenagoa, Calabar and Port Harcourt were found to be 4.64 W/m2, 7.06 W/m2 and 3.08 W/m2 respectively while the corresponding values of the annual mean energy densities were 3.24 KW/m2, 4.93 KW/m2 and 2.14 KW/m2 respectively. The study reveal that though wind energy in the study areas is sufficient only for standalone power generating systems, water pumping and applications requiring less power, higher value of wind energy is possible if wind speed data were collected at heights above the 10m implemented in the study.  

Regionalization of wind-speed data to analyse tree-line wind conditions in the eastern Andes of southern Ecuador

Erdkunde ◽  
2015 ◽  
Vol 69 (1) ◽  
pp. 3-19 ◽  
Author(s):  
Julia Wagemann ◽  
Boris Thies ◽  
Rütger Rollenbeck ◽  
Thorsten Peters ◽  
Jörg Bendix
Keyword(s):  
Wind Speed ◽  
Tree Line ◽  
Wind Speed Data ◽  
Southern Ecuador

Design & Real-time Implementation of MIDO Converter Based PV Water Pumping System with BES

2020 ◽  
Vol 14 (2) ◽  
pp. 194-204
Author(s):  
Anuradha Tomar
Keyword(s):  
Real Time ◽  
Rural Areas ◽  
Maximum Power ◽  
Pump System ◽  
Partial Shading ◽  
Power Extraction ◽  
Pumping System ◽  
Point Tracking ◽  
Water Pumping ◽  
Battery Energy

Background: Despite so many developments, most of the farmers in the rural areas are still dependent on rainwater, rivers or water wells, for irrigation, drinking water etc. The main reason behind such dependency is non-connectivity with the National grid and thus unavailability of electricity. To extract the maximum power from solar photovoltaic (SPV) based system, implementation of Maximum Power Point Tracking (MPPT) is mandatory. PV power is intermittent in nature. Variation in the irradiation level due to partial shading or mismatching phenomena leads to the development of modular DC-DC converters. Methods: A stand-alone Multi-Input Dual-Output (MIDO) DC-DC converter based SPV system, is installed at a farm; surrounded with plants for water pumping with stable flow (not pulsating) along with battery energy storage (BES) for lighting. The proposed work has two main objectives; first to maximize the available PV power under shadowing and mismatching condition in case of series/ parallel connected PV modules and second is to improve the utilization of available PV energy with dual loads connected to it. Implementation of proposed MIDO converter along with BES addresses these objectives. First, MIDO controller ensures the MPPT operation of the SPV system to extract maximum power even under partial shading condition and second, controls the power supplied to the motor-pump system and BES. The proposed system is simulated in MATLAB/ SIMULINK environment. Real-time experimental readings under natural sun irradiance through hardware set-up are also taken under dynamic field conditions to validate the performance. Results and Conclusion: The inherent advantage of individual MPPT of each PV source in MIDO configuration, under varying shadow patterns due to surrounding plants and trees is added to common DC bus and therefore provides a better impact on PV power extraction as compared to conventional PV based water pumping system. Multi-outputs at different supply voltages is another flag of MIDO system. Both these aspects are implemented and working successfully at 92.75% efficiency.

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