DrBoxedWine
New member
Sp6 purchased! Thanks folks!
Sent from my SM-N920V using Tapatalk
Sent from my SM-N920V using Tapatalk
DC vs AC return pumps. Reliability question.
- Thread starter DrBoxedWine
- Start date
gcarroll
Active member
so was that the 15000 in the video?
Cool. Then my Askol block Fluval must be somewhere around 60-70 watts on your setup... even better than I had hoped for.
karimwassef
Active member
Yes
karimwassef
Active member
gcarroll
Active member
How much water is in that container? looks like about 3-5 gallons.
Last edited:
karimwassef
Active member
The test wasn't in that container. It was in a bigger 30 gallon container and feeding into a 5 gallon bucket. It would take between 6 and 12 seconds to fill up at a given height. I kept track of the DC power usage, the time and the "setting" in the controller to relate their setting level to power and flow.
karimwassef
Active member
There we go - <a href="http://s1062.photobucket.com/user/karimwassef/media/74548DCA-7BAD-4E65-9888-BA2796858108_zpsezqecre6.jpg.html" target="_blank"><img src="http://i1062.photobucket.com/albums/t496/karimwassef/74548DCA-7BAD-4E65-9888-BA2796858108_zpsezqecre6.jpg" border="0" alt=" photo 74548DCA-7BAD-4E65-9888-BA2796858108_zpsezqecre6.jpg"/></a>
I knew I had kept a reference to the pumps I was using back then somewhere
The DCT15000 wasn't out back then. I like the SP6. It was the only contender for my $ back then.
I knew I had kept a reference to the pumps I was using back then somewhere
The DCT15000 wasn't out back then. I like the SP6. It was the only contender for my $ back then.
gcarroll
Active member
I understand that. I just wanted a reference to what I am seeing.
karimwassef
Active member
glad to help
I'll try to run the Fluval through two separate wire strips in an extension cord to get a current draw. Mine has zero head though since it's driving the flow in my chiller loop (sump to sump), but with an undetermined amount of backpressure... sorry.
I could run the return into a 5 gallon bucket and get the flow rate.. that can then be used to determine the head (assuming the charts are correct).
Worth the data point to the community and OP or just not worth the effort?
I'll try to run the Fluval through two separate wire strips in an extension cord to get a current draw. Mine has zero head though since it's driving the flow in my chiller loop (sump to sump), but with an undetermined amount of backpressure... sorry.
I could run the return into a 5 gallon bucket and get the flow rate.. that can then be used to determine the head (assuming the charts are correct).
Worth the data point to the community and OP or just not worth the effort?
You'll be pleased with this pump. Please keep us informed.
gcarroll
Active member
karimwassef
Active member
Sure. 29qt so 7.25gal.
gcarroll
Active member
DC vs AC return pumps. Reliability question.
The size of the container or the amount of water in the container? Sorry to be so specific. Like I said just trying to get an idea of what I'm looking at.
The size of the container or the amount of water in the container? Sorry to be so specific. Like I said just trying to get an idea of what I'm looking at.
karimwassef
Active member
the container. It's from Lowe's. I was just using it to see if I could control the flow using a DIY controller.
https://www.lowes.com/pd/Hefty-29-Quart-Clear-Tote-with-Latching-Lid/3341160
https://www.lowes.com/pd/Hefty-29-Quart-Clear-Tote-with-Latching-Lid/3341160
Klaus Jansen
.Registered Member
We have both : AC and DC motorblocks. And i can tell you, DC-technology is significant better in Silence, energyconsuption and Efficiency.
We can perfectly simulate different operating conditions on our pump test stand.
Efficiency of a AC motor has 30-50 %, DC= 80 - 94 %
best regards ... Klaus
We can perfectly simulate different operating conditions on our pump test stand.
Efficiency of a AC motor has 30-50 %, DC= 80 - 94 %
best regards ... Klaus
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gcarroll
Active member
There you have it! I guess Klaus is telling you to choose the Jebao over the Fluval.
Klaus you absolutely incorrect.
First of all today's DC motor blocks are actually AC technology.
Second we today have AC motor blocks with 90% efficiency.
Third of all we would appreciate if you would stop promoting your product.
You can educate yourself by reading this.
http://www.engineering.com/Designer...icleID/8131/What-is-a-DC-Brushless-Motor.aspx
karimwassef
Active member
That's a great article. The common terminology (and used in this thread) is based on the source though. If it runs on a DC bus, it's referred to as DC. If it's running off 60Hz AC line, it's AC.
In the pumps I've compared, the "DC" pumps use power electronics to create optimally timed current and voltage pulses to feed the pump's phases. That optimization results in a superior flow to power consumption that makes up for the loss in electrical efficiency in converting AC to DC in the first place.
In my case, I'm also working on a battery wall at 24V (maybe 48V DC) to allow for continuous operation of DC devices and moving as many devices to DC to get the highest efficiency.
In the pumps I've compared, the "DC" pumps use power electronics to create optimally timed current and voltage pulses to feed the pump's phases. That optimization results in a superior flow to power consumption that makes up for the loss in electrical efficiency in converting AC to DC in the first place.
In my case, I'm also working on a battery wall at 24V (maybe 48V DC) to allow for continuous operation of DC devices and moving as many devices to DC to get the highest efficiency.
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