Optimizing Air Cooling in Electronics Enclosures

[@allanpennington]

Hi, I am working on a clone of a Vox guitar amp and wanted to use thermal flow simulation to assess the 60's cab design and orientation of the amp chassis. In the Vox amp the tubes face down (like many amps) inside the cabinet. I am not sure how to apply a value for the tubes in the chassis which for the simulation is input as Watts. Forgive my obvious lack of electronics knowledge but is there a relation ship between the Watts and external Temperature reached by a tube. The tube data sheets dont show a working temperature range. The flow simulation should show if the heat convection to the components in the chassis is better or worse depending on its orientation, which is the aim of the study. Some people have added fans to their old amps as they have a concern about heat, and some swear that the hotter an amp runs the better it sounds. However there must be an ideal temp range or at least max that a tube should run before its life span is dramatically reduced. I can also use the simulation to see if adding a fan will improve the air flow and therefore heat dissipation. There is also transfer of heat through the chassis from the tubes to other components on the turret board and I have often wondered if the amp is better off in an 'upright' config whereby the heat from the tube rises up and out of the cab, without passing over the rest of the components as apposed to the 'upside down' config.

[@SkipperEnforcer95]

for the perforated plate, when i right click on a face, i don't have the option like yours where on the top you can select perforated plate. how do I do that ?

[@mrwind7556]

very helpful. Thank you!

[@lafamilar]

Hello, Sasi Do you know where I can download the pcb board cad file to practice doing this exercise ?

[@sportinglaroga2346]

link doesnt exist