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Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal

Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal

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1.1 TYPE OF PUMPS USED IN DID<br />

Chapter 1 PUMPING INSTALLATION<br />

1 PUMPING INSTALLATION<br />

Generally, most of the pumps used in DID are high volume - low head type. Mixed-flow <strong>and</strong> axialflow<br />

are most commonly used for both irrigation pumping <strong>and</strong> flood control. Paddy field irrigation<br />

pump operates continuously during the planting season while flood drainage pump operates<br />

intermittently whenever the inflow water is excessive <strong>and</strong> during flood. However for high heads,<br />

radial-flow <strong>and</strong>/or Francis type may be used particularly in long delivery pipeline system. Lately,<br />

Archimedean screw pumps have also been installed in view of its capability in h<strong>and</strong>ling large volume<br />

of water over a wide range of flow rates without clogging. However, civil works is expected to be<br />

expensive as it takes up substantial floor space on installation. Pumps of various design<br />

configurations are as shown in Figures 1.1 (a) (b) (c) (d) (e) & (f).<br />

Fig. 1.1(a) End Suction Pump<br />

Fig. 1.1(b) Archimedean Screw Pumps<br />

March 2009 1-1

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