Elaboration, fabrication and testing of microhydropower station for kinetic energy conversion of flowing whater
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BOSTAN, Ion, DULGHERU, Valeriu, BOSTAN, Viorel, SOCHIREAN, Anatolie, CIOBANU, Oleg. Elaboration, fabrication and testing of microhydropower station for kinetic energy conversion of flowing whater . In: Meridian Ingineresc, 2011, nr. 4, pp. 53-58. ISSN 1683-853X.
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Meridian Ingineresc
Numărul 4 / 2011 / ISSN 1683-853X

Elaboration, fabrication and testing of microhydropower station for kinetic energy conversion of flowing whater

Pag. 53-58

Bostan Ion, Dulgheru Valeriu, Bostan Viorel, Sochirean Anatolie, Ciobanu Oleg
 
Technical University of Moldova
 
 
Disponibil în IBN: 26 noiembrie 2013


Rezumat

Conversia eficientă a energiei cinetice a apei râului în energie mecanică sau electrică fără construcţia barajelor este asigurată de micro-hidrocentralele elaborate. Creşterea eficientei este realizată prin poziţionarea optimă a palelor cu profil hidrodinamic. Au fost fabricate două prototipuri industriale. Scopul principal al acestei lucrări constă în elaborarea palelor cu profil hidrodinamic modificat şi pe baza acestora a rotoarelor hidraulice submersate cu eficienţă de conversie majorată. Au fost stabilite următoarele obiective: elaborarea modelelor computaţionale tranzitorii ale rotorului hidrodinamic cu 3 şi 5 pale submersate pentru simulări extinse în softul de calcul a dinamicii fluidelor (CFD), folosind aplicaţii software ICEM CFD, CFX, TurboGrid, care va permite o variaţie a unghiului de atac pentru fiecare pală în timpul unei rotaţii complete a rotorului.

An efficient conversion of kinetic energy of river water into mechanical or electrical energy without building barrages is provided by microhydropower stations. Increased efficiency is achieved by an optimum position of the blades with hydrodynamic profile. The formulation used to compute the hydrodynamic forces is an inviscid – boundary layer model. Two industrial prototypes are fabricated. The main goal of this paper consists in the elaboration of the modified hydrofoils, and based on them of the turbines with increased conversion efficiency. The following objectives were established: Elaboration of the transient computational models of the hydrodynamic turbine with 3 and 5 hydrofoils for extensive simulations in the framework of computational fluid dynamics (CFD) using software applications ICEM CFD, CFX, TurboGrid and ANSYS, that will allow a variation of the attack angle for each individual blade during a full rotor’s revolution.

Une conversion efficace de l'énergie cinétique de l'eau des rivières en énergie mécanique ou électrique, sans barrages est assurée par des micro-centrales hydroélectriques. Augmentation de l'efficacité est obtenue par une position optimale des lames avec un profil hydrodynamique. Deux prototypes industriels sont fabriqués. L'objectif principal de ce papier consiste en l'élaboration de lames hydrodynamiques modifiées, et sur cette base - des turbines avec une efficacité de conversion a augmenté. Les objectifs suivants ont été établis: élaboration des modèles transitoires de calcul de la turbine hydrodynamique avec 3 et 5 lames pour les simulations approfondies dans le cadre de la dynamique des fluides computationnelle (CFD) en utilisant des applications logicielles ICEM CFD, CFX, TurboGrid et ANSYS, qui permettra une variation de l'angle d'attaque pour chaque lame individuelle pendant un révolution complète de rotor.