Thank you for the explanation. I would like to clear one doubt. To calculate return circulation head loss, we consider the farthest route of hot water supply and return and calculate the flow rate in LPM for that segment? Also, for the whole system only we calculate the heat loss to cover up that with the exchanger
@bgshirt
3 жыл бұрын
Great info...thanks!!!
@takyifwasalama8307
3 жыл бұрын
Is it necessary to combine lengths of pipes for hot and cold water for horizontal networks?
@michaelescobar3746
3 жыл бұрын
Why didn't you consider the heat loss from the water flowing through the return piping?
@JMPCompany
3 жыл бұрын
Hey Michael and thanks for the comment. We typically do not worry about the heat loss from the water flowing thru the return pipe because it is typically a small amount and is returned to the water heater where it will be heated back up. Thanks!
@michaelescobar3746
3 жыл бұрын
@@JMPCompany Thanks for the quick response! I am a bit torn because plumbing design books are split; some tell you to account for the return heat loss while others say it can be negligible. Most of the jobs I design are smaller, so I include losses from the return piping. But I can definitely see how in a larger job this will increase costs since there is much more piping (more heat loss) to account for.
@AnasKhan-qn2yx
5 жыл бұрын
Hi from where you are getting gpm for calculation of load
@JMPCompany
5 жыл бұрын
Hey Anas and thanks for the comment. The gpm is calculated from the heat loss thru the pipe. You have to decide how much heat loss you are willing to have, such as a 10F drop. Once you determine the amount of heat loss and the delta T you can calculate the flow. Look at the video starting about 13-1/2 mins for an example.
@AnasKhan-qn2yx
4 жыл бұрын
HI I am taking hot water return line one size less than the supply line for eg. if my supply pipe is dia40mm then return size is dia 25mm. If supply is 63mm then return is 40mm. So can u please tell me how will i get the head loss for this return pipe line. If possible can u please give me your mail.id so that i can contact you.
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