Seeking advice on pipeline siphonage issues
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The pump and tank are on the ground, with a liquid level of 2 meters. The heat exchanger is on the 23-meter platform, with a pipe resistance of 3 meters. The height of the cooling tower is 7 meters. After heat exchange, the water returns directly to the cooling tower via pipelines. The total pipe loss for the entire pipeline section is 5 meters. The designed head is currently 23 + 3 + 5 = 31 meters. The question is whether siphoning needs to be considered for the 16 meters from the heat exchanger to the cooling tower. That is, when my water pump starts up, it requires a head of 30 meters; but is 15 meters sufficient for its actual operation?
Yes, when there are no leaks in the piping, the head required by the system during startup is much higher than that during normal operation. As a result, the flow velocity in the piping is higher during normal operation than during startup, leading to an increased flow rate. Please verify whether the parameter range of the pump is appropriate in this situation, and calculate the pipe losses during normal operation
The data meets the standards, but the head loss due to pipe bends must be taken into account.