4 replies to this topic

[lafondejs]

Dear All,

 

I’m going to design a heat exchanger with "TEMA X - cross flow type" shell (This is a Tema BXU heat exchanger). And I need to place a perforated distributor plate inside the shell. I found some sketches show the distributor plate is placed under the tube bundle, but I couldn’t find how to place it inside the shell exactly.

 

 Can anybody please show me how to place this distributor plate inside the shell?

 

(Note: This is a nitrogen heater, Shell side – Nitrogen, Tube side – Steam. And Tema X-type shell has been recommended to reduce the shell side pressure drop.)

 

Thanks.

[srfish]

I don't understand the question: " how to place this distributor plate inside the shell?". The plate is normally located under the inlet nozzle and on the bundle. A suggestion is to contact a manufacturer of vacuum equipment like Graham.

[lafondejs]

I don't understand the question: " how to place this distributor plate inside the shell?". The plate is normally located under the inlet nozzle and on the bundle. A suggestion is to contact a manufacturer of vacuum equipment like Graham.

Dear Sir,

Thank you for your reply. I have attached a sketch given to me. It shows a distributor plate under the bundle.

And a same type of distributor plate can be seen on http://www.wermac.or...nger_part5.html

Thanks.

Attached Files

•  sketch.pdf   1.25MB   1846 downloads

Edited by lafondejs, 30 August 2013 - 08:47 PM.

[srfish]

lafondejs,

 

That is an unusual arrangement of a distribution system that is shown in your sketch. I am more familiar with the type where the distribution is done with an external dome on the shell, The length of the dome is about twice the size of the inlet nozzle. It is similar to a vapor belt.

[Padmakar Katre]

Hello,

Both the arrangements, shown in sketch a perforated plate and another by srfish i.e. vapor belt design are common in industry. The perforated plate is extended or covers the entire bundle length and usually employed in X shells with vapor/gas inlets.