scholarly journals Design and analysis of a hydro-powered water turbine pump: a sustainable irrigation infrastructure

2021 ◽  
Author(s):  
Sanjay Poudel ◽  
Rosina Adhikari ◽  
Shashank Adhikari ◽  
Manjul Regmi ◽  
Hari Bahadur Dura
Keyword(s):  
Technical Documentation ◽  
Environment Friendly ◽  
Turbine Pump ◽  
Agriculture Sector ◽  
Pumping System ◽  
Water Turbine ◽  
Distribution Of Power ◽  
A Site ◽  
Sustainable Irrigation ◽  
Irrigation Infrastructure

Abstract The agriculture sector of Nepal has been plagued by problems of poor irrigation networks and infrastructure. This has forced farmers to use fuel and electricity-based pumps, which are both expensive and unsustainable. The problems related to the distribution of power and fluctuating voltages add to the ineffectiveness of the electrical pumping system. So, as a better alternative for environment-friendly and inexpensive irrigation infrastructure, this paper proposes a design methodology of a community-operated hydro-powered pump called water turbine pump (WTP). Although introduced in the 1920s, this technology has been largely ignored nowadays. Moreover, there are insufficient literature and technical documentation to support the design decisions for developers. With an objective to induce momentum in the research and development of this technology, this work presents a well-defined methodology to design a WTP using a propeller turbine directly coupled with a centrifugal pump, in reference to a site located in Bardiya, Nepal. The WTP designed using this methodology could utilize a head of 3 m and a flow rate of 150 lps to deliver 14 lps of water to a height of 14.9 m, yielding a head ratio of 1:5, with an overall efficiency of 50.5%.

scholarly journals Penentuan Harga Air Tanah untuk Irigasi Berkelanjutan di Kabupaten Jembrana

2017 ◽  
pp. 606
Author(s):  
IDA BAGUS MADE WIRAWAN ◽  
I MADE SUDARMA ◽  
I WAYAN BUDIASA
Keyword(s):  
Water Use ◽  
Irrigated Agriculture ◽  
Total Cost ◽  
Agriculture Sector ◽  
Quantitative Calculation ◽  
Sustainable Water Use ◽  
Sustainable Value ◽  
Sustainable Irrigation ◽  
Total Life

Determination of Groundwater Prices for Sustainable Irrigation in JembranaRegency Subak Babakan Yehkuning is relatively new in obtaining Groundwater IrrigationNetwork, with the code YKN-127 in 2014. This study aims to determine the costcomponents and water prices that reflect the value of water use in a sustainablemanner. The method used in this research is quantitative calculation. The total waterdischarge from YKN-127 for three planting seasons in September 2015 until August2016 consecutively was 83,647.01 m3. This amount was derived from the total life ofthe pump for 2,733 hours, with a discharge 8.5 liters/second. The commoditiescultivated in three planting seasons were rice for two times and secondary crop (cornand soybean). Since the availability of ground water has a limited amount, it isimportant to note that the amount of water use should be less than the availabilities.The concept of sustainable value in the use of water is consisted of the total cost ofsupply, opportunity costs, and externalities costs. The results showed that the waterprice reflecting the sustainable water use value for irrigation at YKN-127 was Rp3,933.91/m3, which consisted of a full supply cost 65.9% (Rp 2,592.42/m3), anopportunity cost 27.9% (Rp 1,099.43/m3), and depletion premium 6.2% (Rp242.06/m3). This result is almost three times the operational and maintenance coststhat farmers usually pay for Rp 1,633.99/m3. This price describes the value that mustbe paid as an effort to maintain the development of irrigated agriculture sector andground water resources in order to remain sustainable in Jembrana, Bali Province.

scholarly journals Study of water turbine pump failure

1974 ◽  
Author(s):  
C.R. Schmitt ◽  
F.J. Jr. Lambert ◽  
J.E. Hall ◽  
G.C. Garden
Keyword(s):  
Pump Failure ◽  
Turbine Pump ◽  
Water Turbine

scholarly journals Writing successful patents and overcoming patent barriers

2019 ◽  
Vol 79 (01S) ◽  
Author(s):  
Padmavati Manchikanti
Keyword(s):  
Environment Friendly ◽  
Great Opportunity ◽  
Plant Parts ◽  
Agriculture Sector ◽  
Patent Search ◽  
Economic Significance ◽  
Prior Art ◽  
The Subject ◽  
The Cost ◽  
Technology Area

Inventions related to pre-harvest and post-harvest technologies have revolutionized agriculture. There is a significant growth of intellectual property rights (IPR) in agriculture across the globe. The predominant forms of IP relevant to agriculture sector are patents and designs. Patents are given to inventions that qualify patent eligibility, patentability criteria and disclosure norms. In the area of agriculture, patents provide a great opportunity for improving agricultural processes and products. Understanding the requirements of an invention under the Indian Patents Act, 1970 is necessary to know what can be patentable in India. The criteria of novelty, non-obviousness and industrial application and disclosure norms are applicable to all inventions irrespective of the technology areas. Examination guidelines for each technology area indicate to the elaborateness of the practice in relation to patents. While preparing patent specifications for agriculture inventions, it is important to ensure that the subject matter claimed should not be a method of agriculture (under Section 3h) or plants or plant parts (under Section 3j of the Act). Identification of relevant prior art and its anticipatory value is very important for the assessment of novelty of inventions. Agriculture inventions which can lower the cost, be obtained by reduced number of steps and are environment friendly can be considered under ‘economic significance’ by the Indian patent office (under the purview of Section 2(1) ja). Adhering to the disclosure norms (as mandated under Section 10 of the Act) are also important. Inventors/applicants need to also consider the deposit requirements. The present work examines the relevance of IPR and expansion of the patentability criteria, disclosure norms and additional requirements in relation to agriculture. It will highlight the need for patent search as an integral requirement for research, the process of preparation of invention disclosures to enhance the innovative ability of academic institutions as well as researchers.

scholarly journals Techno-Economic Analysis of Solar Powered Water Pumping System

2020 ◽  
Vol 9 (5) ◽  
pp. 24-32
Keyword(s):  
Solar Energy ◽  
Economic Analysis ◽  
Water Supply ◽  
Fossil Fuels ◽  
Living Standard ◽  
Solar Photovoltaic ◽  
Diesel Generator ◽  
Agriculture Sector ◽  
Pumping System ◽  
Water Pumping

Analytical study of solar photovoltaic water pumping system can be performed on the basis of technical, economical and environmental phenomenon. Use of solar energy to generate off grid electric power has been enhanced in these days and it is continuously increasing day to day due to the active interest of government and people. Numbers of applications are available in the solar energy field and amongst its various applications solar photovoltaic water pumping system is best utilized for agriculture and community water supply. It has increased agriculture productivity due to the power availability when needed for irrigation. This technology has improved the living standard of farmers and villagers who have not proper electrical supply as per their requirement for water pumping. This technology is helping to complete the mission of government and helps farmers to get water pumping system without any need of grid connection. The use of fossil fuels was common earlier for the pumping system and mostly diesel generator based systems are used which causes emission of CO2 and other harmful gases. Fossil fuels increase pollution and causes global warming, health problems and many more while solar energy based applications are helping to reduce CO2 emission and making a step toward green environment. This manuscript presents study of technical and economic analysis of solar water pumping system useful for various water supply applications especially in agriculture sector.

The Chinese water turbine pump

Waterlines ◽  
1987 ◽  
Vol 5 (3) ◽  
pp. 24-26 ◽  
Author(s):  
Shen Lunzhang
Keyword(s):  
Turbine Pump ◽  
Chinese Water ◽  
Water Turbine

Superior energy storage properties and excellent stability of novel NaNbO3-based lead-free ceramics with A-site vacancy obtained via a Bi2O3 substitution strategy

2018 ◽  
Vol 6 (37) ◽  
pp. 17896-17904 ◽  
Author(s):  
Mingxing Zhou ◽  
Ruihong Liang ◽  
Zhiyong Zhou ◽  
Xianlin Dong
Keyword(s):  
Energy Storage ◽  
Lead Free ◽  
Ultrahigh Energy ◽  
Environment Friendly ◽  
Lead Free Ceramics ◽  
Ceramic Capacitor ◽  
Energy Storage Properties ◽  
A Site ◽  
Storage Properties ◽  
Excellent Stability

Novel environment-friendly NaNbO3-based lead-free ceramics with ultrahigh energy storage density and power density for multilayer ceramic capacitor applications.

scholarly journals Transient-Flow Induced Compressed Air Energy Storage (TI-CAES) System towards New Energy Concept

Water ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 601
Author(s):  
Mohsen Besharat ◽  
Avin Dadfar ◽  
Maria Viseu ◽  
Bruno Brunone ◽  
Helena Ramos
Keyword(s):  
Energy Storage ◽  
Transient Flow ◽  
Pressure Head ◽  
Water Systems ◽  
Compressed Air ◽  
Compressed Air Energy Storage ◽  
Pumping System ◽  
Higher Power ◽  
New Energy ◽  
Water Turbine

In recent years, interest has increased in new renewable energy solutions for climate change mitigation and increasing the efficiency and sustainability of water systems. Hydropower still has the biggest share due to its compatibility, reliability and flexibility. This study presents one such technology recently examined at Instituto Superior Técnico based on a transient-flow induced compressed air energy storage (TI-CAES) system, which takes advantage of a compressed air vessel (CAV). The CAV can produce extra required pressure head, by compressing air, to be used for either hydropower generation using a water turbine in a gravity system or to be exploited in a pumping system. The results show a controlled behaviour of the system in storing the pressure surge as compressed air inside a vessel. Considerable power values are achieved as well, while the input work is practically neglected. Higher power values are attained for bigger air volumes. The TI-CAES offers an efficient and flexible solution that can be exploited in exiting water systems without putting the system at risk. The induced transients in the compressed air allow a constant outflow discharge characteristic, making the energy storage available in the CAV to be used as a pump storage hydropower solution.

scholarly journals Exploring a Business Model of Organic Farming through Qualitative Approach

2021 ◽  
Author(s):  
Shahjahan Raja ◽  
Valliappan Raju ◽  
Fozia Malik
Keyword(s):  
Organic Farming ◽  
Business Model ◽  
Qualitative Approach ◽  
Sustainable Business ◽  
Environment Friendly ◽  
Agriculture Sector ◽  
Business Model Canvas ◽  
Organic Products ◽  
Regulatory Bodies ◽  
Youtube Videos

The main objective of this paper is to explore the business model of farmers involved in organic farming and to motivate the society for entering into organic farming business as it is environment friendly and healthy for consumers as well. The methodology used for this research was mainly interviews conducted by farmers of Punjab district of Pakistan. YouTube videos on organic farming in Pakistan were also assessed for gaining more knowledge. From the findings of interviews, a business model used by 05 farmers in production of organic products is explored which was an untapped area in previous research. The contribution of this research is that components of business model canvas used by farmers are explored, and regulatory bodies of the agriculture sector can design policies for the development of organic agriculture in Pakistan. The novelty of this research is that a business model of companies which are producing organic products is studied, however, a business model of organic farming still needs to be explored which is currently attempted. Farmers think that organic farming is a very lengthy and time-consuming process, but they are not aware of the fact that this is the healthiest, environmentally friendly and profitable business. So, this research has covered such aspects which can motivate farmers and even entrepreneurs to enter into organic farming sustainable business to create better income earning opportunities.

Vacuum System to Minimize the Specimen Contamination of High-Performance EM

1977 ◽  
Vol 35 ◽  
pp. 68-69
Author(s):  
N. Yoshimura ◽  
K. Shirota ◽  
T. Etoh
Keyword(s):  
Electron Microscope ◽  
High Speed ◽  
High Performance ◽  
High Vacuum ◽  
Vacuum System ◽  
Pump System ◽  
Pumping System ◽  
Diffusion Pump ◽  
Almost All ◽  
Cascade Type

One of the most important requirements for a high-performance EM, especially an analytical EM using a fine beam probe, is to prevent specimen contamination by providing a clean high vacuum in the vicinity of the specimen. However, in almost all commercial EMs, the pressure in the vicinity of the specimen under observation is usually more than ten times higher than the pressure measured at the punping line. The EM column inevitably requires the use of greased Viton O-rings for fine movement, and specimens and films need to be exchanged frequently and several attachments may also be exchanged. For these reasons, a high speed pumping system, as well as a clean vacuum system, is now required. A newly developed electron microscope, the JEM-100CX features clean high vacuum in the vicinity of the specimen, realized by the use of a CASCADE type diffusion pump system which has been essentially improved over its predeces- sorD employed on the JEM-100C.

Eels Under Standing Wave Conditions

1982 ◽  
Vol 40 ◽  
pp. 492-495
Author(s):  
O.L. Krivanek ◽  
J. TaftØ
Keyword(s):  
Standing Wave ◽  
Wave Conditions ◽  
Set Up ◽  
A Site ◽  
Complex Crystal

It is well known that a standing electron wavefield can be set up in a crystal such that its intensity peaks at the atomic sites or between the sites or in the case of more complex crystal, at one or another type of a site. The effect is usually referred to as channelling but this term is not entirely appropriate; by analogy with the more established particle channelling, electrons would have to be described as channelling either through the channels or through the channel walls, depending on the diffraction conditions.

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