The discussion revolves around calculating the maximum flow rate of water from a building's outlet when the inlet pressure is known. Participants explore the relationship between inlet pressure, head loss in the piping system, and flow rate, considering both theoretical and practical aspects of fluid dynamics.
Participants do not reach a consensus on the conditions under which maximum flow rate is achieved, indicating multiple competing views on the relationship between inlet pressure, head loss, and flow rate.
Participants highlight the need to consider the effects of pressure drop and head loss in their calculations, but the specific assumptions and definitions used in these calculations remain unresolved.
Calculating the losses isn't really the issue. It's understanding what happens once the inlet pressure starts to drop due to the high flow rate. Will maximum flow rate be achieved once the inlet gauge pressure falls to zero? Or does the gauge pressure during flow need to be at least equal to the head loss through the pipe in order to overcome this?anorlunda said:There are numerous online calculators for piping losses. One of them might be able to help you.
TSN79 said:the inlet pressure starts to drop due to the high flow rate
TSN79 said:Calculating the losses isn't really the issue. It's understanding what happens once the inlet pressure starts to drop due to the high flow rate. Will maximum flow rate be achieved once the inlet gauge pressure falls to zero? Or does the gauge pressure during flow need to be at least equal to the head loss through the pipe in order to overcome this?
TSN79 said:Calculating the losses isn't really the issue. It's understanding what happens once the inlet pressure starts to drop due to the high flow rate. Will maximum flow rate be achieved once the inlet gauge pressure falls to zero? Or does the gauge pressure during flow need to be at least equal to the head loss through the pipe in order to overcome this?