Recent content by JohnPinnacle

Hello, Here are the known's of a chassis: Inlet open area = 17 inches^2 Outlet open area = 30 inches^2 Internal Fans = 270 cfm (3 fans @ 90 cfm each) What is the CFM through the system and what's the equations used to figure this out? I assume that if we had a very small inlet or...

The fan spec is 90cfm per fan. That doesn't mean that 270cfm (3 fans) is what will exhaust out the rear of the unit. If I have a huge fan inside a box and a very little inlet or outlet, the fan will be choked and pressure will build due to the open air restriction.

Hello, Here are the knowns: Inlet open area = 17 inches^2 Outlet open area = 30 inches^2 Internal Fans = 270 cfm (3 fans @ 90 cfm each) What is the CFM through the system and what's the equations used to figure this out? Thanks a ton! John