Hi Ehzin,
A big thank you for the advice! I have checked the drawings and yes, indeed the top and bottom covers only seal one flow of either the hot or the cold side.
I really missed that small detail out. Now I understand the need to pressure test both sides.
Many thanks once again...
Hi All,
Recently, our plant had an issue with a spiral heat exchanger that was inspected during our turnaround.
Turns out that we had only pressure tested one side (Hot side) as it was at a higher pressure compared to the Cold side.
So when it was commissioned, the heat exchanger started...
Hi all,
I am sorry if I had offended anyone by disagreeing, no disrespect meant.
As to the fluid, yes it is a by product from the polymer reaction process and its viscosity changes greatly depending on temperature as well as on its composition.
As for the pump, we are currently running at...
Hi LittleInch,
I would have to disagree with you there on the pump not providing a suction force. This pump is a gear pump (positive displacement pump), meaning that it will definitely provide a suction force at inlet side if pump is turned on.
And I know there is a suction force because when...
Thanks Mike, Artisi and Samanmalith for your replies!
Yes, thats what me and my colleague thought so too when we went throught the NPSH calculations.
Because this system was not designed by us originally and the pressure of the holding tank is negative which makes for an interesting case study...
Hi guys,
Need your help and advice on this:
There is a pump system in my company that uses a gear pump to pump a melted solid from a holding tank above the pump to another storage tank. The holding tank is under negative presure(close to full vacuum), and the pump has been frequently...
