Step-by-step instructions on designing, installing and operating water supply systems based on hydraulic ram pumps. With illustrations and diagrams, and details of a pump designed for local manufacture and notes for those developing their own model.
Inhaltsverzeichnis
Part 1 Introduction to the ram pump: components of a ram pump system; the ram pump; general characteristics of ram pump systems - efficiency and power, pump size, water quality, life and reliability, tuning to suit site conditions, economic factors, social factors. Part 2 Ram pumps in water supply systems: renewed interest; local manufacture; other technologies for water supply - water-powered pumping, gravity feed, rainwater harvesting, wind- and solar-powered pumping, manual and animal-powered pumping; the place of ram pumps. Part 3 Preliminary system design: suitable areas - what to look for, allowing for floods; site surveying; pump selection; intake design - spring intakes, stream intakes - dams and weirs, run-of-river intakes; settling tank; drive system - feed pipe, drive tank, drive pipe, pump, pump base, pump house, delivery manifold, delivery pipe, distribution system. Part 4 Design assessment procedure: notes on stage A; flow chart of system design process; notes on stage B; notes on stage C; notes on stage D; notes on stage E. Part 5 System construction: spring intakes - foundations, construction; stream intakes using dams - rock and cement dam, gabion dam, components of a dam; run-of-river intake; feed pipe; flood overflow; settling tank - size, pipe connections to the settling tank; drive tank construction - foundations of the drive tank, the overflow of the drive tank, pipe connections to the drive tank, screens and covers, types of tank; drive pipes; pump base and pump house; pump installation - fixing details, connection to delivery manifold; delivery pipe and manifold; distribution system - storage tanks, standpipes; pipe joints - plastic to plastic, steel to steel, plastic to steel, flexible hose. Part 6 System commissioning and operation: before starting a ram pump; starting a ram pump - if all else fails; stopping a ram pump; measuring pump performance; routine inspection and maintenance - checking the pump(s) monthly, checking the pump(s) quarterly, checking the system monthly, annual system maintenance; pump repair; problem solving and fault finding. Part 7 Local pump manufacture: buy or make?; the manufacture of the DTU steel ram pumps - workshop facilities, quality control; assembly of the DTU pumps - assembly, step-by-step; designing a customized ram pump - the air vessel, delivery valve design, types of delivery valve, impulse valve design. part 8 Case studies - Nepal and Zaire: Nepal - organization and community participation, sample DCS (Nepal) survey form; Zaire. Appendices: some currently available ram pumps; DTU steel pump performance charts; sources of further information; surveying and pipe sizing - measuring height/head, measuring linear distances, measuring flows, determining internal pipe diameter/head loss; the DTU plastic irrigation pump; design drawings for DTU steel pumps.
