Study of effect of rotor
vanes to rotor-casing dimensions on performance of a zero
pollution vane type novel air turbine.
Bharat Raj Singh1* and Onkar Singh2
of Mechanical Engineering, SMS Institute of Technology,
Lucknow-227125, Uttar Pradesh, India.
of Mechanical Engineering, Harcourt Butler Technological
Institute, Kanpur-208002, Uttar Pradesh, India.
*Corresponding author. E-mail:
Tel: +91-522-223-8116, +91-9415025825.
28 April, 2010
This article describes a new concept of
compressed air energy storage
system using atmospheric air at ambient temperature as a
power source for running zero pollution vehicle (ZPV) such
as a motorcycle. The proposed air turbine transforms the
energy of the compressed air into shaft work. The
mathematical modeling and performance evaluation of a small
capacity compressed air driven vaned type novel air turbine
is presented here. The effect of isobaric admission and
adiabatic expansion of high pressure air for different vane
numbers to rotor-casing diameter ratios have been considered
and analyzed. It is found that the shaft work output is
optimum for some typical values of number of vanes at
particular rotor-casing diameter ratios. In this study, the
casing diameter is considered 50, 100 and 150 mm and rotor
to casing diameter ratios are varied from 0.95 to 0.55 and
vane numbers from 4 - 12 and the air turbine is found to
develop maximum power to the order of 1.3, 5.3 (7.1 HP) and
11.9 kW respectively where 5.3 kW power developed with
casing diameter 100 mm is sufficient to run motorcycles.
Zero pollution, compressed air, vane turbine, vane angle,
rotor / casing diameter ratios.