Is it feasible to use an inverter drive to replace the control valve at the pump outlet? If so, how can the energy savings be calculated?
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Is it feasible to use an inverter drive to replace the control valve at the pump outlet? If possible, how much money can be saved in terms of energy consumption by installing a control valve? How should I calculate this? I hope experts can give some guidance
Welcome everyone to offer some guidance. Is there anyone who is an expert in this area who can give some advice?
Inverters are not cheap; it depends on the size of the motor. It also depends on whether the motor is an inverter-driven motor; otherwise, it may get damaged. Variable-frequency motors control the outlet flow, but cannot achieve accurate control.
Add your control scheme for the control valve to the frequency converter to replace the control valve. It’s not clear how much can be saved
Sure, of course. It mainly involves comparing power consumption and specific operating conditions; there’s no specific algorithm involved
It is necessary to consider the normal operating flow rate and the pump’s rated flow rate; if the normal flow rate is roughly equal to the pump’s rated flow rate, then using variable frequency control is pointless.
Whether it can help save energy depends on what type of pump it is. May I ask what type of pump you have?
There are many factors to consider when making this change; after frequency conversion, both the head and flow rate of the pump will change, so it is necessary to determine whether the head is sufficient at low frequencies. Your motor is likely a regular motor, not an inverter-driven motor; it may get damaged at low frequencies.