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# Backpressure Calculation For Generator Radiator

## Backpressure Calculation For Generator Radiator

(OP)
Dear All,

I have to install Air Duct around a diesel generator ,
In the Generator Datasheet I found the following Data related to the radiator :

Due to site condition , I will have to install the duct as follow :

Would you please provide me method of calculation of back pressure induced by the beam structure

Regards

### RE: Backpressure Calculation For Generator Radiator

You have three options:

Option 1: Build it and then measure it

Option 2:Use a cooling tower to cool the radiator

### RE: Backpressure Calculation For Generator Radiator

If you can find a point in the wall where you can get equal area to the radiator then I would suggest a transformation piece in the duct and ignore the beam completely by going to one side of it.
If that cannot be done add a 30* included angle fairing to the front and rear of the beam , and ignore the back pressure calculation.
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B.E.

You are judged not by what you know, but by what you can do.

### RE: Backpressure Calculation For Generator Radiator

Both SMACNA and ASHRAE cover this kind of pressure drop.

Find a Mechanical Engineer to help with this.

### RE: Backpressure Calculation For Generator Radiator

(OP)
If you guys can provide with Calculation example of any other Back pressure in duct systems , I will try to this myself
Thnx

### RE: Backpressure Calculation For Generator Radiator

A formula is not going to help if you don't understand the parameters of the equation.

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