Large Tank in Germany
- Thread starter Jens Kallmeyer
- Start date
clownaround2
New member
Didn't have time to read the entire post and only read parts of it. You can't buy it from a manufacturer, because he had it custom made. On the pages 16-19 they are discussing everything about the pump, if it works, what kind of turnover and angle it will have.
Hope that helps.
Hope that helps.
clownaround2
New member
Hey just saw your tank size. Nice. You would have use for one of those. Maybe Jens Kallmeyer will chime in, to give you more info, because he knows more about the post.
Gary Majchrzak
Team RC
nice cube 
wolfgangcolsman
New member
Hi everybody,
thank you for your interrest in my tank.
Since I make the whole documentation on the german site and am not frequently on reef central it will be to much effort for me to start an english version of the documentation in parallel. But if you have any specific questions feel free to ask them here.
thank you for your interrest in my tank.
Since I make the whole documentation on the german site and am not frequently on reef central it will be to much effort for me to start an english version of the documentation in parallel. But if you have any specific questions feel free to ask them here.
kevantheman35
New member
wow!
wolfgangcolsman
New member
Hi Claudio,
the concept of the pump is a brushless DC motor.
It consists of 5 parts:
- Propeller, including a crown of high quality permanent magnets. Diameter is 20 cm.
- Electromagnetic coils that are casted by a ceramic composite
- 2 cover plates, fixed using the screws
- Shaft with bearings
The electromagnetic coils are driven by a frequency converter that has a 0-10 V input line that controls the speed. A second input is used to change the flow direction.
The diagram shows the flow output in l/h vs. the power consumption in watt.
Between the second and the third point is the optimal range, starting with 500 rpm, 81.000 l/h using 112,50 watt to 1000 rpm, 162 l/h using 355 watt.
The maximum thrust is 190 N (kg·m/s²) at an output speed of 2,7 m/s.
Since I do only use one flow direction I changed the propeller to a steeper design. The outcome increased by approx. 25% compared to the chart.
If you are interrested just contact me to discuss the details.
Regards
Wolfgang
the concept of the pump is a brushless DC motor.
It consists of 5 parts:
- Propeller, including a crown of high quality permanent magnets. Diameter is 20 cm.
- Electromagnetic coils that are casted by a ceramic composite
- 2 cover plates, fixed using the screws
- Shaft with bearings
The electromagnetic coils are driven by a frequency converter that has a 0-10 V input line that controls the speed. A second input is used to change the flow direction.
The diagram shows the flow output in l/h vs. the power consumption in watt.
Between the second and the third point is the optimal range, starting with 500 rpm, 81.000 l/h using 112,50 watt to 1000 rpm, 162 l/h using 355 watt.
The maximum thrust is 190 N (kg·m/s²) at an output speed of 2,7 m/s.
Since I do only use one flow direction I changed the propeller to a steeper design. The outcome increased by approx. 25% compared to the chart.
If you are interrested just contact me to discuss the details.
Regards
Wolfgang
Claudio D
Member
Wolfgang
Thanks for your answer, Did you design it? what a clever idea...
Who manufactured?
On the same topic, the piping design how did it worked out?
what about debris entering the system?
Did the screen old up too such a large flow or did you change the intake? I am concern that can be clogged?
regards
Claudio
Thanks for your answer, Did you design it? what a clever idea...
Who manufactured?
On the same topic, the piping design how did it worked out?
what about debris entering the system?
Did the screen old up too such a large flow or did you change the intake? I am concern that can be clogged?
regards
Claudio
wolfgangcolsman
New member
Hi Claudio,
the manufacturer usually produces bow thrusters. He developed that one according to my specifications.
Since I got some more requests I think about making it available to the market.
For public aquaria, where noises are not a problem, it would be possible to double the power by changing the design of the electromagnetic coils.
Finally, I reduced the piping to a 67° angle that blows down to the front. With this design I really have almost no dead places without current using just one pump.
In order to reduce noises I changed the fixing to EPDM buffers (the vertical pipes contain casted lead to hold the pump down):
Normal operation is 50.000 to 100.000 l/h (at a 8.000 l gross volume). At this speed it produces almost zero noises,
Every hour I increase the outcome to 200.000 l/h for 30 secs, that raises all detritus in the system to make it available to the corals.
Once a day I raise it for 30 min to make the detritus available to the skimmer.
After 9 month of operation it still does not have to be cleaned. It has just a thin layer of bacteria and small sponges on the case.
the manufacturer usually produces bow thrusters. He developed that one according to my specifications.
Since I got some more requests I think about making it available to the market.
For public aquaria, where noises are not a problem, it would be possible to double the power by changing the design of the electromagnetic coils.
Finally, I reduced the piping to a 67° angle that blows down to the front. With this design I really have almost no dead places without current using just one pump.
In order to reduce noises I changed the fixing to EPDM buffers (the vertical pipes contain casted lead to hold the pump down):
Normal operation is 50.000 to 100.000 l/h (at a 8.000 l gross volume). At this speed it produces almost zero noises,
Every hour I increase the outcome to 200.000 l/h for 30 secs, that raises all detritus in the system to make it available to the corals.
Once a day I raise it for 30 min to make the detritus available to the skimmer.
After 9 month of operation it still does not have to be cleaned. It has just a thin layer of bacteria and small sponges on the case.
