Protection of heat exchanger in a blocked in case

[NewtoProcessDesign]

What other information do I require in order to determine how much pressure a heat exchanger will see from a centrifugal pump if the HX is blocked in on the outlet? I currently know the heat exchanger MAWP, the specific gravity of the fluid, and I have the pump curve and data sheet which give the pump TDH. The pump is fed from an overhead accumulator on a distillation column.

I realize this is basic engineering, but I have not done engineering calculations in 15 years and do not currently have access to my texts. Thank you for the help.

 

[MikeHalloran]

I think that would be the 'shutoff head' of the pump, plus the head at the pump inlet, plus/minus any elevation difference from the pump to the hx.



Mike Halloran
Pembroke Pines, FL, USA

 

[BigInch]

I'll add, the elevation to the lowest point of the heat exchanger.

I hate Windowz 8!!!!

 

[NewtoProcessDesign]

Thank you both for your responses!

 

[itdepends]

Don't forget to use worst case for the suction head- the highest pressure + level that you can get in the overhead accumulater that feeds the pump.

As a chem eng/metallurgist the first part of any answer I give starts with "It Depends"

 

[ash9144]

You also want to consider the fluid on the other side of the tubes. If it is a heater assume your temp control valve is leaking (unless you have other devices to ensure this cant happen) by or cooler assume you lose coolant flow.