An experimental investigation of cross-flow turbine efficiency

Journal Article · Thu Sep 01 04:00:00 EDT 1994 · Journal of Fluids Engineering; (United States)

DOI:https://doi.org/10.1115/1.2910311· OSTI ID:6896786

Desai, V R ^[1]; Aziz, N M ^[2]

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1. Indian Inst. of Technology, Kharagpur (India). Dept. of Civil Engineering
2. Clemson Univ., SC (United States). Dept. of Civil Engineering

An experimental investigation was conducted to study the effect of some geometric parameters on the efficiency of the cross-flow turbine. Turbine models were constructed with three different numbers of blades, three different angles of water entry to the runner, and three different inner-to-outer diameter ratios. Nozzles were also constructed for the experiments to match the three different angles of water entry to the runner. A total of 27 runners were tested with the three nozzles. The results of the experiments clearly indicated that efficiency increased with increase in the number of blades. Moreover, it was determined that an increase in the angle of attack beyond 24 deg does not improve the maximum turbine efficiency. In addition, as a result of these experiments, it was determine that for a 24 deg angle of attack 0.68 was the most efficient inner-to-outer diameter ratio, whereas for higher angles of attack the maximum efficiency decreases with an increase in the diameter ratio from 0.60 to 0.75.

• OSTI ID: 6896786
• Journal Information: Journal of Fluids Engineering; (United States), Journal Name: Journal of Fluids Engineering; (United States) Vol. 116:3; ISSN JFEGA4; ISSN 0098-2202
• Country of Publication: United States
• Language: English

Related Subjects

13 HYDRO ENERGY
130700* -- Hydro Energy-- Power-Conversion Systems
CROSSFLOW SYSTEMS
EFFICIENCY
EQUIPMENT
HYDRAULIC TURBINES
HYDROELECTRIC POWER PLANTS
LOW-HEAD HYDROELECTRIC POWER PLANTS
MACHINERY
PEAKING POWER PLANTS
POWER PLANTS
PUMPED STORAGE POWER PLANTS
TURBINES
TURBOMACHINERY