Water Cooler

[posture]

Hi Guys,

I' trying to design an oil mist eliminator to filter oil mist exhausted from the lube oil tank of a gas turbine,I need a water cooler to reduce the temperature of the flow. The client has specified oil entrainment as 12.5 l/min. Oil is Synthetic oil; Mobil Jet oil 254; about 2 kJ/kgxK.

Basically, I'm lost. I've never used a cooler before and don't know where to start. apparently the 12.5 l/min isn't possible ( according to the supplier). I dunno. I can't go back to the user.
Last communication with the supplier was "I can find that the evaporation loss after 6,5 hours at 205°C and atmospheric pressure is 2,1%
This means that oil load of 12,5 l/m is as gas (= few grams per minute)
I hope you can give us values as mass flow in plase of volume."

I know this is a bit vague but if anyone could help me out and point my in a general direction, I might be able to resolve this.

Thanks

Posture

 

[MintJulep]

So you'd like us to do what? Make up some more numbers?

You can't design a thing if you don't know what performance is required.

 

[darai]

I would start by using Google. Know how to do that?
Thinking, well, since I know so little about an oil mist eliminator, I'd google "oil mist eliminator" to get started.
Is this too much work?
More, never heard of a mechanical engineer/tech who never heard about heat exchangers! Exchange heat to heat or cool.

 

[TJOrlowski]

You need a basic heat exchanger. Decide whether you want plate&frame, or shell&tube.

Then, advise your prospective manufacturer(s) all the design criteria:

Fluid being cooled
Flow of fluid being cooled
Inlet temperature of fluid being cooled
Desired outlet temperature of fluid being cooled
Max DeltaP through the heat exchanger

Type of fluid available for cooling
Worst case (lowest available) flow
Worst case (highest) inlet temperature of cooling fluid
Max DeltaP through the heat exchanger

This should get you started.

-TJ Orlowski
JFD Tube & Coil Produts, Inc.

http://www.jfdcoil.com

 

[CH5OH]

most of the airborn oil is not explicitly vapour but fog, eg small oil droplets, therefore to collect the oil you might want to try a cyclone