Browse Articles
Discover research articles across all indexed journals
Analysis of cervical bone mineral density in children and adolescents using cone beam computed tomography combined with liquid phantoms
AL365181.3 as a novel prognostic biomarker for lung adenocarcinoma
Relationship between difference in endotracheal tube cuff area and airway area with minimum cuff pressure for adequate airway sealing: a prospective observational study
Association between healthy neuroticism and eating behavior as revealed by the NKI Rockland Sample
Exploring the cytotoxic effects of bioactive compounds from Alcea rosea against stem cell driven colon carcinogenesis
Analysis of gear transmission error in helical gear using enhanced tooth contact analysis model considering measured tooth profile errors
RETRACTED ARTICLE: Stationary-frame power regulation for controlling grid-connected three-phase modular multilevel converter with low harmonic under unbalanced voltage
A nomogram for predicting contralateral femoral head collapse after unilateral replacement of bilateral femoral head necrosis
Transmission dynamics of highly pathogenic avian influenza among multiple waterfowl species and backyard poultry: the impact of the stopover period
Accelerating veterinary low field MRI acquisitions using the deep learning based denoising solution HawkAI
High-sensitivity qPCR detection method based on silver flower-like LSPR-active material
Thick film formation on Li-O2 cathodes – breaking the true capacity barrier
Autonomous surgical planning of mandibular angle reduction based on anatomical landmarks and osteotomy plane detection
Development of a sustainable portable Archimedes screw turbine for hydropower generation
Abstract Portable hydropower turbines are turbines with a scale below 5 kW and which can be carried from one place to another easily by hand due to their light weight. This study was carried out to evaluate the potential of Archimedes Screw Turbine (AST) as an improved portable hydro-power turbine (PHPT) to address shortcomings in available portable turbines. The design of Archimedes screw hydro-power turbine is mainly concerned with screw geometry, which is determined by a variety of internal and external characteristics, including its length, external and internal diameter, Pitch of blades, and Number of the blades, which were 80 cm, 18 cm, 9.53 cm, 18 cm and two number of blades respectively. The turbine was manufactured from stainless steel material according to design parameters and installed in the laboratory. Experimental testing was performed at different discharges (Q) of 0.3, 0.4, 0.5, 0.6, and 0.7 ft3/s and at the angle of inclination of 22, 30, 45, and 55° of screw shaft to measure power outputs and overall efficiencies. The maximum overall efficiency obtained was 70% at a flow rate of 0.5 ft3/s and at an angle of inclination of 30°. The power output at maximum overall efficiency was 42 watts and hydraulic efficiency was 75.5%. At the flow rate of 0.3 ft3/s and an angle of inclination of 55°, the turbine produced a minimum power output of 22.8 watts and an overall efficiency of 39.4%.Experimentation revealed that the flow rate (Q) and inclination of the turbine shaft affect the turbine Power output (Po) and overall efficiency (ηo). This study helps to manufacture small AST on a large scale, to utilize small flows of water, and to evaluate the possibilities of AST as an appropriate portable hydro-power generation turbine. Further research and experimentation are needed to assess whether 3D printing can be effectively scaled for broader implementation in low-resource areas.