www.worldpumps.com 0262 1762/08 © 2008 Elsevier Ltd. All rights reserved Effective simulations to ensure optimal performance and correctly predict the hydraulic and thermomechanical behaviour of today’s huge boiler feed water pumps are a challenge for engineers and constructors. Generally, boiler feed water pumps are subjected to extreme mechanical and thermal stresses because of their huge siz...

solar irrigation pumps a reality in India. It is only a matter of time before governments begin aggressive promotion of solar irrigation pumps. Several players are already in the market offering a range of solar pumping solutions. This note is inspired by a field visit to some of the solar pumps installed by Claro Energy in Bihar. Its cost structure which is high on fixed costs and low on varia...

In this paper, a data-mining approach for modeling pumps in the wastewater preliminary treatment process is discussed. Datamining algorithms are utilized to develop pump performance models based on industrial data collected at a municipal wastewater processing plant. The performance of wastewater pumps is described by two parameters, pump energy consumption and water flow rate after the pumps. ...

office building, or school, or replace your heating and cooling system, you may want to consider a geothermal heat pump (GHP) system. GHP systems are also known as GeoExchange, ground-source, or water-source heat pumps (as opposed to air-source heat pumps). Regardless of what you call them, energy-efficient geothermal heat pumps are available today for both residential and commercial building a...

The retention and release of total coliforms and Escherichia coli was investigated in hand-pumps removed from tubewells tapping a faecally contaminated aquifer in Matlab, Bangladesh, and from a new hand-pump deliberately spiked with E. coli. All hand-pumps were connected to reservoirs of sterile water and flushed. Faecal coliforms were observed in the discharge from all three of the previously ...

Cavitation is one of the most well-known process faults that may occur in different industrial equipment especially centrifugal pumps. Cavitation also may happen in water pumps and turbines. Sometimes cavitation has been severe enough to wear holes in the impeller and damage the vanes to such a degree that the impeller becomes very ineffective. More commonly, the pump efficiency will decrease s...