Help with Transition Pressure Loss Calculation

Could someone please assist me with figuring the pressure loss of a transition?

I am specifically doing an eccentric transition and just really need some instruction in regards to how to calculate the loss generated. I would really like a link to a free software tool that could do it for me but I would actually prefer to have a calculation that I can put into excel (or do by hand).

The calculations for an eccentric transition would be awesome too.

Thanks,

X

Can anyone ppoint me in the right direction with this?

Are you talking about the refrigerant pressure loss?

No just a duct coming off of an expansion coil.

We are a refrigeration based forum, so the people with knowledge about duct friction losses are quite rare on here. You may be better off asking your question on a ventilation forum