12,000

We have over 12,000 students, from over 100 countries, within one of the safest campuses in the UK

93%

93% of Lancaster students go into work or further study within six months of graduating

Home > Research > Publications & Outputs > The exploitation of low-head hydropower by pres...
View graph of relations

« Back

The exploitation of low-head hydropower by pressure interchange with air, using siphons.

Research output: Contribution to journalJournal article

Published

Journal publication date2001
JournalProceedings of the IMechE Part A: Journal of Power and Energy
Journal number2
Volume215
Number of pages8
Pages223-230
Original languageEnglish

Abstract

The paper describes and analyses a hydropower system based on siphons in which the pressure of low-head water is converted into air pressure. The analysis suggests that, with careful design of the flow passages to minimize losses, air-pumping efficiencies of 70 per cent or more should be achievable; the overall efficiency of the hydropower system should be better than 60 per cent. Although such values of efficiency are lower than usually found in hydro plant, the economics of the system are likely to be attractive owing to the low capital cost of the system compared with conventional water turbine systems. It is shown that a siphon plant is suitable, in single-stage from, for heads up to about 1.7m. For higher heads the system can be used in two or more stages.