Trade-off Analysis and Design of a Hydraulic Energy Scavenger

Zenerino, Enrico Cesare; Detoni, Joaquim Girardello; Boero, Diego; Tonoli, Andrea; Chiaberge, Marcello

doi:10.5772/50719

Cited by 2 publications

(2 citation statements)

References 10 publications

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“…The resulting device required a minimum flow rate of 3 l min −1 to start and could produce up to 720 mW at a flow rate of 20 l min −1 . Other interesting works implementing a vertical axis propeller can be found in [15,16]. A 20 mm-diameter horizontal axis turbine was implemented in [4].…”

Section: Introductionmentioning

confidence: 99%

Miniature water flow energy harvester based on savonius-type microturbine: an experimental study

Lepipas,

Holmes

2024

Smart Mater. Struct.

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In this experimental study, a miniature turbine-based water flow energy harvester designed for the purpose of providing power to wireless sensors within water pipes is reported. The device comprises a Savonius-type turbine and a radial flux permanent magnet electromagnetic generator. The two are magnetically coupled so that, while the turbine is submerged in the water flow, the generator operates in air. The device is cylindrical with a diameter of 0.8 cm and a length of 7.2 cm and, when inserted through a hole in a pipe wall so that only the turbine protrudes into the flow,it presents a cross-sectional area to the flow of only 1.25 cm2. Manufacturing was achieved through a blend of conventional machining methods, laser cutting, rapid prototyping, and flexible printed circuit board technology for the generator stator. To ensure low friction and minimize cut in speed, ceramic ball bearings were employed. The prototype can function effectively at water velocities as low as 0.5 m/s, generating electrical power within the range of 125 μW to 5.1 mW when subjected to flow speeds between 0.5 and 2 m/s. A maximum overall efficiency of 2.2% is achieved, when the water speed is 0.8 m/s. Performance curves derived from experimental testing of the turbine for a range of rotor designs, obtained on a water flow rig, are presented and discussed.

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Section: Introductionmentioning

confidence: 99%

Miniature water flow energy harvester based on savonius-type microturbine: an experimental study

Lepipas,

Holmes

2024

Smart Mater. Struct.

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“…Radial-flow micro turbines have been introduced by [6] and were sold by Bosch Junkers [7]. In [10], a cross-flow (or Banki) turbine, coupled to a single phase permanent magnet generator with a claw-pole structure has been proposed. IMTEK [5,6] also reported a radial-flow turbine incorporating a two-pole ring magnet and three induction coils connected in a star circuit.…”

Section: Introductionmentioning

confidence: 99%

Cm-scale axial flow water turbines for autonomous flowmeters: an experimental study

Gasnier¹,

Saoutieff²,

Soriano³

et al. 2018

Smart Mater. Struct.

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This paper reports on the performances and the optimization of a 40 mm diameter water flow energy harvester based on an axial turbine (horizontal axis propeller) coupled to a customized permanent magnet generator. To the best of our knowledge, this work is one of the first comprehensive studies in the low dimensional and flow velocities ranges. The parameters of the propeller have been empirically optimized ( D l =1, B=4 blades) by the means of experiments in a test-bench pipe at various flow rates from 1 to 9 m 3 h −1 . The best propeller design has been selected for its performances in terms of electrical power and pressure drop. A customized permanent magnet converter with ferromagnetic elements has been modeled, optimized with finite elements simulations and fabricated.

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Trade-off Analysis and Design of a Hydraulic Energy Scavenger

Cited by 2 publications

References 10 publications

Miniature water flow energy harvester based on savonius-type microturbine: an experimental study

Miniature water flow energy harvester based on savonius-type microturbine: an experimental study

Cm-scale axial flow water turbines for autonomous flowmeters: an experimental study

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