Relevant bibliographies by topics / Varma turbine

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Conference papers
  5. Reports

Academic literature on the topic 'Varma turbine'

Author: Grafiati
Published: 3 June 2025
Last updated: 31 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Varma turbine.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Varma turbine"

1

PANAITESCU, Fanel-Viorel, Mariana PANAITESCU, and Cornel PANAITESCU. "METOCEAN SPECIFICATIONS FOR WIND DATA BASE ON THE BLACK SEA." Journal of Marine Technology and Environment 2, no. 2 (2023): 58–63. http://dx.doi.org/10.53464/jmte.02.2023.10.

Full text
Abstract:
In this paper we present the steps to establish a design of floating wind turbine in offshore area. In order to be able to design a floating wind turbine in the offshore area of the Black Sea, data about the wind potential, the potential of waves and sea currents are needed, as well as wave-wind cross-data and other atmospheric data. It is assumed that the location of the floating turbine is the area of the Galata platform, Varna, Bulgaria, located at 25 km south-east of the city of Varna in the South-West Black Sea area. The wind dataset can downloaded from a server in NetCDF file form. The s
APA, Harvard, Vancouver, ISO, and other styles
2

Georgiev, Georgi. "Control of Steam-Turbine Regulators at Transition to an Island State." Scientific Journal of Riga Technical University. Power and Electrical Engineering 25, no. 25 (2009): 73–76. http://dx.doi.org/10.2478/v10144-009-0016-0.

Full text
Abstract:
Control of Steam-Turbine Regulators at Transition to an Island StateThe simple operating algorithm is presented for steam turbine regulators of type Simadin (Siemens) at emergency switching-off of the generator from system together with some, unknown in advance, load. The given situation is known as "a transition to an island state (regime)". Keeping of turbine speed and preservation of its rating value at a generator blackout when its own needs will be load only, is an easy problem. When the generator remains in its island it is necessary to solve "on-line" two additional problems: to reveal
APA, Harvard, Vancouver, ISO, and other styles
3

Tobon-Tobon, Nelson, Kevin Alexander Henao-González, Andrés Felipe Burbano-Hernandez, Jorge Sierra-Del Rio, and Diego Andrés Hincapié Zuluaga. "Influencia de la solidez y el número de álabes en una turbina de eje vertical tipo H-darrieus." Revista Politécnica 16, no. 32 (2020): 9–18. http://dx.doi.org/10.33571/rpolitec.v16n32a1.

Full text
Abstract:
El siguiente estudio propone el análisis de una turbina hidrocinética de eje vertical tipo H-Darrieus que puede ser implementada en las regiones no interconectas al sistema eléctrico colombiano en especial las zonas costeras. El objetivo del estudio es analizar el número de álabes en la eficiencia de la turbina hidrocinética, para esto se proponen 27 tipos de rotores, en los cuales, se varia el número de álabes desde 2 hasta 10 para 3 valores de solidez diferentes. Concluyendo que a partir de 3 álabes se reducen los torques negativos producidos, incrementando la capacidad de autoarranque, sin
APA, Harvard, Vancouver, ISO, and other styles
4

Tobon-Tobon, Nelson, Kevin Alexander Henao-González, Andrés Felipe Burbano-Hernandez, Jorge Sierra-Del Rio, and Diego Andrés Hincapié Zuluaga. "Influencia de la solidez y el número de álabes en una turbina de eje vertical tipo H-darrieus." Revista Politécnica 16, no. 32 (2020): 9–18. http://dx.doi.org/10.33571/rpolitec.v16n32a1.

Full text
Abstract:
El siguiente estudio propone el análisis de una turbina hidrocinética de eje vertical tipo H-Darrieus que puede ser implementada en las regiones no interconectas al sistema eléctrico colombiano en especial las zonas costeras. El objetivo del estudio es analizar el número de álabes en la eficiencia de la turbina hidrocinética, para esto se proponen 27 tipos de rotores, en los cuales, se varia el número de álabes desde 2 hasta 10 para 3 valores de solidez diferentes. Concluyendo que a partir de 3 álabes se reducen los torques negativos producidos, incrementando la capacidad de autoarranque, sin
APA, Harvard, Vancouver, ISO, and other styles
5

Carvalho, F. T., E. D. Velini, A. L. Cavenaghi, E. Negrisoli, and R. M. Castro. "Influência da turbidez da água do rio Tietê na ocorrência de plantas aquáticas." Planta Daninha 23, no. 2 (2005): 359–62. http://dx.doi.org/10.1590/s0100-83582005000200025.

Full text
Abstract:
As plantas aquáticas são estudadas como um efeito do desequilíbrio causado pela poluição e/ou alagamento dos rios. A quantidade excessiva de plantas, conseqüente desse desequilíbrio, dificulta a navegação e a produção de energia elétrica. O objetivo deste trabalho foi identificar as principais plantas aquáticas do rio Tietê e relacioná-las com a turbidez da água dos diferentes reservatórios. Foram avaliados todos os focos de vegetação aquática emersa, flutuante e submersa, presentes em cada reservatório, em toda a sua extensão, sendo consideradas como importantes as espécies que apresentaram o
APA, Harvard, Vancouver, ISO, and other styles
6

Sultanov, M. M., and V. M. Truhanov. "Mathema' cal model of varia' on of output opera' onal characteris' cs of steam turbines of thermal power plants." Safety and Reliability of Power Industry 10, no. 1 (2017): 42–47. http://dx.doi.org/10.24223/1999-5555-2017-10-1-42-47.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Grott, Silvana Lopes, Evellyn Brito Façanha, Rafael Neri Furtado, Helenilza Ferreira Albuquerque Cunha, and Alan Cavalcanti da Cunha. "Variação espaço-sazonal de parâmetros da qualidade da água subterrânea usada em consumo humano em Macapá, Amapá, Brasil." Engenharia Sanitaria e Ambiental 23, no. 4 (2018): 645–54. http://dx.doi.org/10.1590/s1413-41522018162018.

Full text
Abstract:
RESUMO O objetivo desta investigação foi avaliar a qualidade da água subterrânea consumida em 52 residências em Macapá, Amapá, Brasil. Parâmetros físico-químicos e microbiológicos (pH, turbidez, cor, Fe, NO3, Mn, Cl, NH3, Al, coliformes totais, E. coli) e parâmetros sanitários (bairro, filtro, características do poço, caixa d´água, destino do esgoto, distância do poço às fossas, alagamentos, doenças etc.) foram utilizados nesta quantificação. Amostras de água foram coletadas nas residências nos períodos seco (novembro de 2014) e chuvoso (abril-maio de 2015). Testes estatísticos identificaram i
APA, Harvard, Vancouver, ISO, and other styles
8

ANDRADE NETO, João Silva de, Letícia Thiesen RIGON, Elírio Ernestino TOLDO JR., and Carlos A. F. SCHETTINI. "Descarga sólida em suspensão do sistema fluvial do Guaíba, RS, e sua variabilidade temporal." Pesquisas em Geociências 39, no. 2 (2012): 161. http://dx.doi.org/10.22456/1807-9806.35910.

Full text
Abstract:
O presente trabalho apresenta uma avaliação da variação temporal da descarga sólida em suspensão no sistema fluvial do Guaíba. Foi utilizada uma base de dados históricos entre 2003 a 2006, constituída de vazões diárias dos rios afluentes (rios Jacuí, Sinos e Caí), e da turbidez da água monitorada em intervalos de 30 minutos na estação de tratamento de água do Departamento Municipal de Água e Esgoto (DMAE). Os dados de turbidez foram convertidos em concentração de sedimentos em suspensão (CSS) através da calibração do sensor de turbidez com amostras de sedimentos em suspensão coletadas no Guaíb
APA, Harvard, Vancouver, ISO, and other styles
9

Roedel, Tamily, Victoria Walloth, Vivian Cionek, and Joaquim Branco. "Caracterização socioambiental da bacia hidrográfica do rio Itajaí-Mirim - SC." Metodologias e Aprendizado 7 (May 23, 2024): 102–26. http://dx.doi.org/10.21166/metapre.v7i1.4954.

Full text
Abstract:
As bacias hidrográficas são unidades de planejamento territorial e concomitantemente refletem os problemas do meio urbano. A bacia hidrográfica do rio Itajaí-Mirim, localizada no Estado de Santa Catarina, drena áreas historicamente ocupadas por agricultura, mineração e urbanização, refletindo negativamente sobre a qualidade de suas águas. Esta pesquisa tem como objetivo fazer a caracterização socioambiental da qualidade e usos da água na bacia do Itajaí-Mirim. Para isso, foram utilizadas base de dados públicos, empresas de saneamento básico dos municípios e/ou através de solicitações via Lei d
APA, Harvard, Vancouver, ISO, and other styles
10

Arones Medina, Edgar G., Raúl R. Veliz Flores, and Ybar G. Palomino Malpartida. "Evaluación de la calidad del agua del río Huatatas, aplicando el ICA, Región Ayacucho." Investigación 26, no. 1 (2018): 117–25. http://dx.doi.org/10.51440/unsch.revistainvestigacion.2018.1.67.

Full text
Abstract:
El rio Huatatas recorre parte de la provincia de Huamanga y en ella se observa que se tiene presencia de actividades antropogénicas, que utilizan el agua del rio para agricultura, ganadería, recreación y consumo. Las actividades humanas a lo largo del rio Huatatas vienen contaminado sus aguas. E1 objetivo de la investigación es determinar el valor del Indice de Calidad del Agua (ICA) del rio Huatatas de la región Ayacucho en el año 2017, para ello se ha evaluado los parámetros fisicoquímicos y microbiológicos para calcular el Índice de Calidad del Agua (ICA) del rio Huatatas. Se determinaron 0
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Varma turbine"

1

Loland, Kari Medby. "Wind Turbine in Yawed Operation." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13437.

Full text
Abstract:
The task of this project was to investigate the near wake, performance characteristics and yaw moment on a model wind turbine. The test turbine is a horizontal axis three bladed machine with a rotor diameter of 0.9 meter. Initially it is an upwind turbine, but was used for downwind measurements as well by rotating the blades and the entire construction 180^0. For the wake measurements the tip speed ratio was set to be TSR=3, TSR=6 and TSR=9 to describe the different regimes; partly stalled, optimal operation and partly propeller operation. Two different yaw angles, 0^0 and 30^0, was also explo
APA, Harvard, Vancouver, ISO, and other styles
2

Løver, Kristian Aase. "Biomass gasification integration in recuperative gas turbine cycles and recuperative fuel cell integrated gas turbine cycles : -." Thesis, Norwegian University of Science and Technology, Department of Energy and Process Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9658.

Full text
Abstract:
<p>A multi-reactor, multi-temperature, waste-heat driven biomass thermochemical converter is proposed and simulated in the process simulation tool Aspen Plus™. The thermochemical converter is in Aspen Plus™ integrated with a gas turbine power cycle and a combined fuel cell/gas turbine power cycle. Both power cycles are recuperative, and supply the thermochemical converter with waste heat. For result comparison, the power cycles are also integrated with a reference conventional single-reactor thermochemical converter, utilizing partial oxidation to drive the conversion process. Exergy analysis
APA, Harvard, Vancouver, ISO, and other styles
3

Sæterstad, Marie Lunde. "Dimensioning Loads for a Tidal Turbine." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13637.

Full text
Abstract:
The main dynamic loads on a tidal turbine are due to the tidal current variation, turbulence, wave-current interaction and wake from the tower and upstream turbines. The design of the turbine is highly dependent on the dynamic loads acting on the turbine&apos;s blades and its structure. Cyclic loading and unloading of any material over a period of time will lead to fatigue and structural damage. In this work dimensioning loads for NTNU&apos;s 1 MW reference tidal turbine are calculated due to the vertical no-slip current velocity profile, wave-current interaction, the horizontal and vertical v
APA, Harvard, Vancouver, ISO, and other styles
4

Nygard, Øyvind Vik. "Wake behind a horizontal-axis wind turbine." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13691.

Full text
Abstract:
In this paper theory on cylinder and wind turbine wakes have been studied, and experimental work on the wake behind a wind turbine have been carried out in the Fluids engineering laboratory at NTNU.The objective of this paper is to show and explain how the wake from the tower of a wind turbine develops and interacts with the rotor wake. It is desirable to study the wake for different operating conditions of the wind turbine to see how the wake development is affected. A summary of classical wake theory, aerodynamics and wind turbine wakes will be given. Measurements in the wake of a cylinder f
APA, Harvard, Vancouver, ISO, and other styles
5

Sæta, Eivind. "Design of Airfoil for downwind wind turbine Rotor." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-12883.

Full text
Abstract:
This thesis is on the design of an airfoil for a downwind wind turbine rotor with thin flexible wings, for offshore floating conditions. It has been suggested that such a system would to be lighter, simpler and allow for the use of more efficient airfoils. There has been a significant amount of work done at NTNU to develop a “high-lift” airfoil. These are airfoils with very high lift-to-drag ratios. They operate very efficiently at their design angle, but tend to not work well over a range of angles and conditions, and have a sudden and dramatic stall characteristic. In this thesis, it is atte
APA, Harvard, Vancouver, ISO, and other styles
6

Gjøsæter, Kristine. "Hydraulic Design of Francis Turbine Exposed to Sediment Erosion." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14256.

Full text
Abstract:
Sediment erosion is a large problem for turbines operated in sand laden water, especially in the Himalayas and the Andes Mountains, where the contents of hard minerals in the rivers are high. A program called &lt;i&gt;RenewableNepal&lt;/i&gt; supports the development of a new design philosophy for hydraulic turbines. NTNU and Kathmandu University cooperate within this program, and this master thesis is part of that cooperation.The objective of this thesis is to carry out the hydraulic design of a Francis turbine with reduced velocities. As part of that, a design software has been developed, u
APA, Harvard, Vancouver, ISO, and other styles
7

Gogstad, Peter Joachim. "Hydraulic design of Francis turbine exposed to sediment erosion." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-16772.

Full text
Abstract:
High concentrations of sediments is a serious problem for hydropower stations in the Himalayas and the Andes Mountains. For run-of-river power plants sediment causes heavy erosion even with settling basins. This leads to reduced operating hours and high maintenance cost. In addition, the original design experienced problem with heavy cavitation.The objective of this master thesis is to carry out new hydraulic design of the runner and guide vanes of the existing Francis turbines in La Higuera Power Plant with reduced velocity components. To achieve this the cause of the heavy cavitation, which
APA, Harvard, Vancouver, ISO, and other styles
8

Vatne, Sigrid Ringdalen. "Aeroelastic Instability and Flutter for a 10 MW Wind Turbine." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-14255.

Full text
Abstract:
The goal of this thesis is to evaluate if flutter is a challenge to a 10 MW wind turbine. Flutter is an aeroelastic instability which occurs due to the interaction between the aerodynamic forces and the elasticity of the blade. Torsional motions of the blade lead to variations in the aerodynamic forces due to changes in the angle of attack of the airfoil. The variation in aerodynamic forces creates flapwise vibration of the blade. When the vibrations of the blades are in an unfavourable phase with the aerodynamic forces, flutter occurs. Flutter may lead to rapidly increasing vibrations of the
APA, Harvard, Vancouver, ISO, and other styles
9

Høydal, Arild. "Virkningsgradsmåling av en høyttrykks Francis turbin." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elkraftteknikk, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-13694.

Full text
Abstract:
19. mai ble det utført virkningsgradsm°alinger av Norconsult AS ved Nore I Kraftverk i Buskerud. På denne målingen var Stud. Techn. Arild Høydal medvirkende, og utførte samtidig egne målinger av energifordelingen i avløpet til bruk i masteroppgaven. Kraftverket består av åtte Peltonturbiner, hver på 26 MW, og har en fallhøyde på 343 m. Målingene ble utført på turbin 8, som nettopp ble satt i drift etter utskifting av løpehjulet. En garantiåaling av virkningsgraden skulle derfor utføres. Denne oppgaven består av to hovedmål. Det første er å sette seg inn i teorien bak termodynamiske virkningsgr
APA, Harvard, Vancouver, ISO, and other styles
10

Meland, Hallvard. "A new Design of a Francis Turbine in order to reduce Sediment Erosion." Thesis, Norwegian University of Science and Technology, Department of Energy and Process Engineering, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-10161.

Full text
Abstract:
<p>This Master Thesis is about the sand erosion challenges with the Francis turbines. The background for studying this subject is the fact that the sand erosion problem is a very negative factor for the development of new hydro electric power plants in many developing countries. The target with this Master Thesis has been to develop a new design, a revised version of the Francis turbine, reducing the sand erosion by 30- 50 per cent compared with today´s version of turbines. The present version of Francis turbines is consisting of three different vane cascades, The stay, guide and runner cas
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Varma turbine"

1

VARMA STEAM TURBINE. www.turbine.net.in, 2012.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Varma turbine"

1

Naji, Mohanned Mohammad, and Balasem Abdulameer Jabbar. "Diffuser augmented wind turbine: A review study." In TRANSPORT, ECOLOGY, SUSTAINABLE DEVELOPMENT: EKO VARNA 2023. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0191895.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Deghoum, Khalil, Hakim S. Sultan, Mahir H. Majeed, et al. "Study of the crack in wind turbine blade using the XFEM method." In TRANSPORT, ECOLOGY, SUSTAINABLE DEVELOPMENT: EKO VARNA 2023. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0191664.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Hegde, Sandesh, Ramachandra Chamarajanagar Gopal, Nagesh Siraganahalli Narasimhaiah, and Ragahvendra Mathighatta Javaraiah. "Vertical axis wind turbine efficiency enhancement by using permanent magnet propelling characteristics." In TRANSPORT, ECOLOGY, SUSTAINABLE DEVELOPMENT: EKO VARNA 2023. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0195585.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gaonkar, Ratan U., and Ramakrishna N. Hegde. "Data analysis of wind energy potential for rooftop mounted horizontal axis small wind turbine at the site location Chikkolli, Kumta, Karnataka state." In TRANSPORT, ECOLOGY, SUSTAINABLE DEVELOPMENT: EKO VARNA 2023. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0195512.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Varma turbine"

1

Sundin, Josefin, Birgitta Jacobson, Rob van Gemert, John Persson, Elin Myrenås, and Philip Jacobson. Stress hos europeisk ål under sumpning och transport : effekter av fångst och transport. Department of Aquatic Resources, Swedish University of Agricultural Sciences, 2023. http://dx.doi.org/10.54612/a.4r2gjeh6cg.

Full text
Abstract:
Fångst och transport, så kallad ’trap and transport’, används för att transportera fisk förbi hinder som blockerar dess vandringsväg. Metoden kan användas för att transportera fisk både uppströms och nedströms vandringshinder. Fångst och transport används ofta för att bevara fiskpopulationer och ekosystemfunktioner, men kan också användas för att förbättra möjligheterna till fiske i områden uppströms vandringshinder. Den europeiska ålen, Anguilla anguilla, är en art där fångst och transport används som en bevarandeåtgärd. Ålen har minskat kraftigt och är rödlistad som akut hotad av den interna
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Varma turbine' for particular source types:
Journal articles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography