Look up how these work for a better explanation. If energy consumption is not your concern, you can use a dump tank (or more than one on opposite ends) of the tank with somewhat makeshift sluice gates to create the waves, just like a real world wave pool.
Wavemaker for reef tanks software#
(2) pumps with individual VFDs can be used for a similar effect, a simple software or discrete timer would couple and control the VFDs. You would tune the wave by adjusting the time, just as you do with any other wavemaker. The valve can be controlled with a stepper motor (rotary spool valve) a solenoid (push pull spool valve). Paul can build you a spool valve that will directly reverse the flow in (2) or more ports. I have another idea that is more simple that involves a type of plunger that bobs up and down to make the waves (even cheaper). BUT you don't have a bunch of expensive parts to replace (solenoids should last longer then the tank). Not too far off from the cost of 2 to 3 wave boxes. so maybe $1000-$2000 range depending on need for VFD and cost of solenoids. I think the cost of this would be about $500 motor + VFD, $100 plumbing, $1200 solenoids x 2 (didn't look that hard yet) + $100 micro w/ LCD. It workes, but it's annoying to hear the motor pulse and it will destroy the windings since they are not insulated for that kind of current (I think). I did make waves last night in my 240G by pulsing my VFD (I have a 3 phase 1/2hp motor on my tank for flow). There should be no head loss with a closed loop so you should easily get 6000gph outlet which, with displacment from the boxes, should get you a nice cheap big wave. Basically using two solenoids to alternate the outlet left or right and a microcontroller to dial in the resonant frequency of your tank. Once every 4-8 years you change the bushing for $70. If you were to make this with an inductive motor that ran non stop, it would be very economical. A tunze wavebox is great for a 240G, but it gets expensive when it gets bigger, and I HATE HATE HATE replacement costs of expensive DC impellors and how noisy they get when they start to wear. I'm trying to find economical and reliable ways to make waves in a tank 500G and above.
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