- #1
Oscar Gonzalez
- 1
- 0
Hi everyone. Let me give a little bit of background on the problem I need help understanding.
I want to plumb an aquarium that has a sump and move the water from the sump to the main aquarium using a pump and 1" PVC pipe. The total system pipe length is going to be roughly 10 feet total with some elbows in between. I've read that using two 45 degree fittings is better than one 90 but this is the thing I want to understand that is not clear to determine if it is worth the gain from using the two 45 vs one 90 (on multiple places in the setup).
How do I calculate the flow loss (not pressure) of using one 90 degree fittings vs two 45 degree ones? What is the math behind this principle? I've been reading some fluid mechanic literature but so far I think it is just too technical for a simple human like me to try to apply it in a simple aquarium setup.
I saw a video here of some company that did a test with the two types of fittings and basically discovered that there is no really impact on chosing the 90 or 45 degree fittings for this application which confused me a lot since from what I've been reading there should be pressure head loss from using the 90 vs the 45s, but I haven't been able to find anywhere online that explains what does pressure loss have to do with flow rate. I feel like they should have found some difference in using one fitting or the other, or maybe their setup is just too small that the flow loss is insignificant, or maybe they just did it completely wrong. If you could help me understand the logic behind all this it would be great, or point me in the right direction to understand this topic a little better.
Thanks a lot for your time.
I want to plumb an aquarium that has a sump and move the water from the sump to the main aquarium using a pump and 1" PVC pipe. The total system pipe length is going to be roughly 10 feet total with some elbows in between. I've read that using two 45 degree fittings is better than one 90 but this is the thing I want to understand that is not clear to determine if it is worth the gain from using the two 45 vs one 90 (on multiple places in the setup).
How do I calculate the flow loss (not pressure) of using one 90 degree fittings vs two 45 degree ones? What is the math behind this principle? I've been reading some fluid mechanic literature but so far I think it is just too technical for a simple human like me to try to apply it in a simple aquarium setup.
I saw a video here of some company that did a test with the two types of fittings and basically discovered that there is no really impact on chosing the 90 or 45 degree fittings for this application which confused me a lot since from what I've been reading there should be pressure head loss from using the 90 vs the 45s, but I haven't been able to find anywhere online that explains what does pressure loss have to do with flow rate. I feel like they should have found some difference in using one fitting or the other, or maybe their setup is just too small that the flow loss is insignificant, or maybe they just did it completely wrong. If you could help me understand the logic behind all this it would be great, or point me in the right direction to understand this topic a little better.
Thanks a lot for your time.