Performance Analysis of Low Head Hydraulic Air Compressor
- 1 Mechanical Engineering Department, Faculty of Engineering at Rabigh, King Abdul-Aziz University, Jeddah, Saudi Arabia
- 2 Mechanical Power Department, High Institute of Energy, South Valley University, Aswan, Egypt
- 3 Egyptian Electricity Holding Company, Aswan, Egypt
Abstract
Hydraulic Air Compressor (HAC) is a device which converts hydraulic energy to energy of compressed air. A better exploitation of this hydraulic resource is currently investigated. The aim of the current work is to analyze a low head open type HAC in terms of compression ratio and HAC efficiency. The performance of HAC is both experimentally and theoretically investigated for various air admission system parameters (air tube length and diameter), downcomer length and hydraulic head. The results are both presented and discussed. Variation of the mean diameter of air bubbles in the downward flow in the downcomer is both determined and investigated. The losses in the whole system are classified, investigated and its impact on HAC is discussed.
- M. B. Widden, M. J. French and G. A. Aggidis, “Economic Energy from Low-Head Water by Conversion to Air Pressure,” Proceedings of Hydropower 2004 World Class Engineering in a Challenging Environment Symposium, Lancaster University, London, 2004, pp. 1-10.
- J. L. Shapiro, “The Hydraulic Air Compressor Combustion Turbine,” Asme Cogen-Turbo, Igti, Vol. 9, 1994, pp. 291- 297.
- G. Bidini, C. N. Grimaldi and L. Postrioti, “Thermod- ynamic Analysis of Hydraulic Air Compressor-Gas Turbine Power Plants,” Proceedings of Instn Mech Engrs, Vol. 211, 1997, pp. 429-437.
- G. Bidini, C. N. Grimaldi and L. Postrioti, “Performance Analysis of a Hydraulic Air Compressor,” Proceedings of Instn Mech Engrs, Vol. 213, 1999, pp. 191-203.
- A. Nishi, “Highly Efficient Gas Turbine System Using Isothermal Compression,” JSME International Journal, Vol. 39, No. 3, 1996, pp. 615-620.
- W. Rice and B. D. Wood, “Characteristics of the Hydraulic Air Compressor as a Small Hydro-Power Device,” Small- Hydro-Power-Fluid-Mach ASME Winter Annual Meeting, Chicago, 1980, pp. 81-87.
- M. J. French and M. B. Widden, “The Exploitation of Low-Head Hydropower by Pressure Interchange with Air, Using Siphons,” Proceedings of IMeche Part A-Journal of Power and Energy, Vol. 215, No. 2, 2001, pp 223-230.
- R. L. Street, G. Z. Watters and J. K. Vennard, “Elementary Fluid Mechanics,” Seventh Edition, J. Willey & Sons, New York, 1996.