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The application of Appropriate Technology

Articles for Keyword "mechanised pumps"

Centrifugal Pump Selection and Installation

Posted on Oct 25, 2011

Factsheet by the British Colombia Ministry of Agriculture, Food and Fisheries on the correct selection and installation of centrifugal pumps. Efficient operation of a pump can only be obtained by selecting the correct pump, as well as the proper selection and installation of suction and discharge fittings. The pump should be evaluated on a regular basis to ensure the pump is operating properly and is still sized correctly for the system, especially after any major system modifications. The most commonly used pumps in irrigation are centrifugal pumps, turbine and submersible pumps. Centrifugal pumps are a good choice to pump water from lakes, rivers, creeks or shallow wells. Horizontal centrifugal pumps commonly used for irrigation systems have total dynamic heads of less than 400 ft and suction lifts of less than 20 ft. This factsheet focuses on centrifugal pumps. Turbine and submersible pumps are used when pumping from wells with a static water level below 15 ft. Turbines are often used for total dynamic heads exceeding 450 ft. Submersibles are available up to 10 inch in diameter and motor sizes up to 100 hp. Read the while document as a PDF file (100...

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Photovoltaic Water Pumps

Posted on Oct 25, 2011

Short technical brief by the GTZ on photovoltaic pumping systems. In many developing countries, the inadequate supply of drinking and irrigation water is a severe problem. In rural areas with no access to grid power, national water authorities and private farmers have to rely on hand pumps and diesel-driven pumps, many of which are out of service due to technical defects or a lack of fuel. As a rule, hand-operated pumps are the least-cost option for low consumption rates and low pumping heads. If hand pumps cannot satisfy the demand, diesel driven pumps are commonly used for drinking and irrigation water supply. These pumps stand in competition with photovoltaic water pumps (PVP), which present themselves as a reliable and environmentally-sound alternative means of water delivery. Read the whole of this document as a PDF file (144...

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Pump Calculator Spreadsheet

Posted on Oct 25, 2011

This spreadsheet allows the user to find the pump power requirement (Watts or Brake Horse Power) for various feeder pipe diameters (in) and given a known flow rate (LPS), pipe length (m) and head (m) and then select a suitable pump based upon available pump characteristic data. Microsoft Excel (192KB)

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Rural Water Supply Technology Options: Handpumps, Mechanised Pumps and Surface Water

Posted on Oct 25, 2011

Booklet by SKAT with information on hand pumps, mechanised pumps and rainwater and surface water Collection. This document contains details of reciprocating handpumps, rotary handpumps and displacement handpumps as well as a section on motorised pumps. You can read the whole of this document as a PDF file (8.5 mb)

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Solar Pump Calculation Sheet

Posted on Oct 25, 2011

PDF calculation sheet for designing solar pumping systems. Download this sheet as a PDF file (92 kb)

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