Concept and Physical Prototyping of Micro Hydropower System Using Vertical Crossflow Turbine

Todorov, Georgi; Obretenov, Valentin; Kamberov, Konstantin; Ivanov, Tsvetozar; Tsalov, Tsvetan; Zlatev, Blagovest

doi:10.1109/efea49713.2021.9406242

Cited by 5 publications

(7 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The characteristic curves of the wind turbine were expressed with the power coefficient Cp and the tip speed ratio (TSR) λ. The turbine's power coefficient is calculated by the formula [21][22][23][24][25][26]:…”

Section: Methodsmentioning

confidence: 99%

Investigation of a cross-flow wind turbine with a hybrid frontal guiding device

Iliev,

Tsalov

2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

The research results of a new type of frontal guide device for vertical axis wind turbines are presented. The guiding device is composed of cylindrical guide vanes and deflector. The design is derived from two different guiding devices: cylindrical guiding apparatus and so-called omni-directional guiding apparatus, which consists of plates evenly placed around the turbine’s runner. The experiments were carried out on the laboratory test bench No. 7 (wind turbines) in the Laboratory of Hydropower and Hydraulic Turbomachinery at the Technical University of Sofia. According to the obtained data, the new guiding device increases the efficiency of the turbine up to 2.5 times. A comparison is made between the obtained operating curves and those of similar wind turbines, published in various reputable journals.

show abstract

Section: Methodsmentioning

confidence: 99%

Investigation of a cross-flow wind turbine with a hybrid frontal guiding device

Iliev,

Tsalov

2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…By equating equations ( 10), (11), and ( 17) the stream velocity in the disk plane can be written as:…”

Section: Calculation Of Axial Kinetic Turbinementioning

confidence: 99%

“…Both types of turbines are calculated according to the same theory, which allows the combining of the developed methods that increase their efficiency. The content of the article is focused on axial kinetic turbines, as the reports show that they have higher efficiency, better starting capabilities, and lower cut-in speed, compared to the vertical hydrokinetic turbines [4][5][6][7][8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Review on the Axial Hydrokinetic Turbines. Field of Application and Efficiency Enhancement Methods

Iliev,

Todorov,

Kamberov

et al. 2024

Preprint

View full text Add to dashboard Cite

Along with the increasing industrialization of contries and population growth, the global. With the thougth of overcoming climate change and renducing greenhouse gas emissions in the atmosphere, interest in alternative sloar, wind, water, geothermal, tidal and ocean wave energy has significantly increased. Hydropower is one of the most used inexhaustible sources of energy on a global scale. The efficiency of water turbines can be increased by optimizing the blade cascade and the casing. For this purpose, research is conducted on specialized laboratory benches. The purpose is to determine the influencing parameters which affecting the nature of the power and cavitaion curves This paper presents the results of numerical and laboratoty studies of axial hydrokinetic turbines. A detailed analysis of the influence of the geometric parameters of the blades on the operating curves is made. A mathematica model for synthesis of the blade cascade is derived. An assessment of water energy soures has been made and sites of high energy potential have been pointed. The present material can be used for development of a methodology for calculation of efficient axial hydrokinetic turbines.

show abstract

“…Attached fo the guiding device's frame at both ends, the deflector's contour resembles an arc of a circle with diameter Dgv = 1080 mm (Figure 3.1). Shifted by 17 deg from 1st quadrant, the annular deflector covers the entire passive zone of the turbine's runner [15]  Maximum theoretical mechanical power -Pth, W [16][17][18][19][20][21][22][23][24]:…”

Section: Experiments With Arc-shaped Deflectormentioning

confidence: 99%

Investigation of a cross-flow wind turbine with frontal deflector

Iliev

2024

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

The publication presents the results of the study on vertical cross-flow wind turbine with frontal arc-shaped and flat deflectors that increase the turbine’s power coefficient by up to 0.08. The optimal development angle of the arc-shaped deflector has been determined. The obtained results are compared with those of numerical and physical studies published in various reputable journals. Relevant fields of application are discussed. The research is carried out at test bench No. 7C (wind turbines) in the Laboratory of Hydropower and Hydraulic Turbomachinery at the Technical University of Sofia.

show abstract

Concept and Physical Prototyping of Micro Hydropower System Using Vertical Crossflow Turbine

Cited by 5 publications

References 4 publications

Investigation of a cross-flow wind turbine with a hybrid frontal guiding device

Investigation of a cross-flow wind turbine with a hybrid frontal guiding device

Review on the Axial Hydrokinetic Turbines. Field of Application and Efficiency Enhancement Methods

Investigation of a cross-flow wind turbine with frontal deflector

Contact Info

Product

Resources

About