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2.2 Pre-Dam Simulation Testing
Malaysia Water Research Journal
After the Pre-Commissioning Testing, ram pump was ready to be tested in
further scenarios. This testing is purposely to find out the exact setting of inverter
pump flow rate as to determine minimum workable flow rate for selected size of
ram pump. Firstly, operate ram pump in steady performance at inverter pump
setting begin at 39 Hertz. Then, record ram pump performance every hour until
eight (8) hours continuously and also record water level decreasing at Dam Tank.
Start again the ram pump after the ram pump stop operating. This time decrease
it from 39 Hertz to 38 Hertz, repeat until at 30 Hertz. By this testing, ramp pump
designed factor at application site could be determined in terms of annual flow
rate of the water body or byy the necessity of having small size of water dam.
2.3 Dam Simulation Testing Methodology
This test is to evaluate whether the ram pump required a small dam for
the effective and continuous operations during on-site application. During this
testing, Inverter Pump was setting in interval of one (1) between 33 to 39 Hertz
for this supplying water to the Dam Tank. There was a different level of water
detention at Dam Tank. Firstly, operate the ram pump as usual; start at Inverter
Pump setting at 39Hertz. Observe the water level of Dam Tank after few hours
ram pump operating continuously. Repeat the test with Inverter Pump setting at
38 Hertz to 37.8 Hertz and observed the water level of the Dam Tank;
2.4 Pre-River Simulation Testing Methodology
This test is to confirm that ram pump could be operated without the assistant
of Dam Tank. There are four (4) adjustable valves to control the flow to the ram
pump to achieve a constant flow rate. Firstly, set the Inverter Pump constant flow
rate at 33 Hertz. Then, adjust Valves A, B, C, D as follows: Fully Closed D-Valve,
Fully Open A-Valves, ¼ Opened B-Valves and ½ Opened C-Valves. After that,
repeat Inverter Pump setting at more than 33 Hertz, followed by the setting, at
less than 33 Hertz.
2.5 River Simulation Testing Methodology
This test is to confirm that ram pump could be operated without the assistant
of Dam Tank at a certain setting of Inverter Pump. Firstly, set Inverter Pump
constant flow rate at 43Hertz. Then adjust Valves A, B, C, D as to assure only one
way flow to the ram pump produce. Repeat at Inverter Pump setting at more
than 43 Hertz to 50 Hertz.
2.6 The 24 hours Simulation TestingMethodology
This is conducted to test whether the designed ram pump could operate
continuously exceeding 6hours, 12hours and 24hours. This test was executed
after the River Simulation Testing had completed.
Institut Penyelidikan Hidraulik Kebangsaan Malaysia (NAHRIM)
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National Hydraulic Institute of Malaysia (NAHRIM)