Liquid Pumps High Delivery Pressure

[RANGER1]

Hi all,

Can high pumped liquid pressure have a detrimental effect on coil performance and if so how?

At what differental pressure is pumped liquid too high? I find it varies so much from site to site i'm guessing that all cannot be ideal?

Cheers

Superfridge, each plant is different because liquid pumps are selected to suit each plant.
Pump Head you will notice on pump nameplates is different at each plant.
Metres of head changes pump pressures as required on different plants so pump works in it's design curve, so to avoid cavitation & can overcome pipework lift & pressure drops of valves/pipework.

Pressure may be high at pump, but a lot less when at higher level like in roof space.
It could effect plant performance if to high as some units may have to much liquid flowing through hand expansion with no pressure drop across HEV causing brining, see links.
https://www.globalpumps.com.au/head
https://www.parker.com/literature/Re...P%20Manual.pdf see page 9
http://www.nhtres.com/Mechanically-P...vaporators.pdf

http://www.nhtres.com/download.shtml