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Search: Posts Made By: mephistopheles
Forum: Renovations & New Construction 10-10-12, 08:20 AM
Replies: 50
Views: 31,548
Posted By mephistopheles
If you had an indirect return I would agree with...

If you had an indirect return I would agree with your calculations. With a direct return flow, however, you will have short-circuiting of the system and all the flow will go through the shortest...
Forum: Renovations & New Construction 10-09-12, 03:54 PM
Replies: 50
Views: 31,548
Posted By mephistopheles
The way I would calculate that would be 34 tee...

The way I would calculate that would be 34 tee fittings and 2 elbows to get 18 parallel pipes between two headers of equal size. That's 34*2.2+34*10.4+9.4*2. That's 447.2 additional feet. If we...
Forum: Renovations & New Construction 10-09-12, 02:39 PM
Replies: 50
Views: 31,548
Posted By mephistopheles
All those tee fittings will increase the required...

All those tee fittings will increase the required head significantly through friction losses. I don't have a Crane or Cameron book that includes PEX but I would use 1.38 or so for the K value of...
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