chilled water hydronic system , ahu have two type of pipe arrangement 1- direct return 2-reverse return reverse return keep differential pressure on control valve constant
Thanks for the video. It was actually a very simple concept once you explained it. Other resources were unable to convey the concept behind the reverse return, leaving more questions that answers. Appreciate it.
What should be the size of piping in a supply, Return and reverse return circuit of a 16 FCU Circuit. Whether will it be the same size from end to end or it will vary??/
Thanks for the video. It was actually a very simple concept once you explained it. Other resources were unable to convey the concept behind the reverse return, leaving more questions that answers. Appreciate it.
Thank you.
What should be the size of piping in a supply, Return and reverse return circuit of a 16 FCU Circuit. Whether will it be the same size from end to end or it will vary??/
Nice explanation but I think it gives the false impression that the supply piping is in series.
Which better ; using reverse piping or direct piping with balancing valves ?
Reverse return is always better. It's just more expensive due to the extra pipe
What about high rise having multiple floors with multiple units in each floor?
Good question, I'd like to know that too.
The ultimate would be a separate reverse return for each unit.
which pipe line getting high pressure?
supply pipe or return pipe
its equal
Since there is always a pressure drop across a fancoil unit the supply side is at higher pressure than return side.
supply side since there is internal pressure drop in the coils