Does the pump curve add a factor to account for the pump loosing efficiency as it ages? As the excellent example does not discuss this matter. I have seen some examples online that add 20% to total dynamic head for pump loss.
For peak flow rate, can I simply add up ALL the GPMs (flow rate) of all the emitters? For friction loss calculation, do I need to factor in the friction loss of secondary hose and capillary tubes?
Noneed Toknow60 - Maybe not directly, however I can see how wind will effect the whole sprinkler system and how ancillary components will ultimately influence pump sizing and selection.
Unless you have a variable speed pump you cannot boost discharge pressure. Wind speed is not constant so it is futile trying to calculate pressure versus wind resistance to gauge upwind throw. @@Bhatmann
