I wouldn't think that. A watt is a watt.Thing is, you would think a very low power pump would be cheaper as a 12V pump, rather than as a 24V pump?
You will notice that most pumps come integrated with motors and they are the cheapest.which voltage is best for powering the pump and solenoid? We want it cheap as possible, but we also want it all to last as long as possible. I mean, 12V?, 24V? 48V? At what voltage are these pumps and solenoids cheaper?
Thanks....i dont know why, but i just also think that overall we will have more choice if we pick 24V. In terms of cost and longevity.24VDC is a marine standard for reliable pumps of all sizes.
...sorry i should have said, this is pumping water up 2 metres at the highest, and we are looking at a pump of around 20W maximum...and of course, most of the time, it wont be pumping at all.a 350W motor and a single stage centrifugal pump will be able to pump water happily 15m
...thanks, that sounds interesting...kind of making up our own pumpDepending on your requirements and pump type, maybe a RPM controlled BLDC motor may help to save power.
Thanks Klaus, sorry , i should have said, the solenoid will let through mains water, and will likely only be opened for maybe 10 seconds per day at most. But yes....after 1 second of actuation, we will PWM down as you say.Electromagnetic valves need full voltage only for the fisrt time, then the voltage may be PWM´d.
maybe 50% or even down to 25%. Read the datasheet or test it.
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