1 reply to this topic

[lingesh]

Hi,

 

 

I am working on vacuum annealing furnace for which thickness to be calculated.The furnace is of Cylindrical

double wall type.Between two walls cooling water flows at 4.5bar pressure.Inside opeating pressure is 3 bar.

 

My question is to find thickness of shell,

1.Do i need to consider both external(water pressure) and internal pressure separately to find thickness for each pressure and then selecting larger among the two?

 

Or

2.Calculating the resultant pressure=4.5-3=1.5 bar inside pressure and calculating thickness for this pressure.

 

What's the right method as per ASME?

[fallah]

lingesh,

 

You should consider higher thickness resulting among two below situations:

 

1) Maximum pressure between two walls and, at the same time, minimum pressure inside...

 

2) Maximum pressure inside and, at the same time, minimum pressure between two walls...

Edited by fallah, 30 November 2015 - 06:49 AM.