lubricant temperature at suction pipe

[wilsoncheung]

Hi,everyone!
As in the suction piper, there are liquid and gas refrigerant, also there are lubricant. Which temperature is higher? Lubricant or refrigerant gas?

I think gas has a higer temperature because gas are superheated while lubricant oil has liquid refrigerant which may at the saturation temperature?

What do you think? And do you have any information about this? Any thesis, paper?

Thanks!

[mad fridgie]

If it is the suction line, there should be no liquid, all should be superheated to some level, oil is transported as a mist (excludes the slug from a suction riser), so does does not carry liquid, suspended in the vapour.
If liquid and vapour are present in the same place (flowing pipe, then all will be at saturation, same temperature)

[wilsoncheung]

There are possiblity that liquid exist in suction pipe.

Regardless if there is luquid or not, what is the lubricant temperature, higher or lower that refirgerant gas?

[wilsoncheung]

Stiil waiting online for your reply!

[mad fridgie]

Stiil waiting online for your reply!

I did answer this question, but then decided that you are being very rude, so look else where for your answers

[wilsoncheung]

Very Sorry, Mad fridgie! My fault that made you think I am very rude. But I didn't meant it. Hope you will forgive me.

Do you have any material about this?

[wilsoncheung]

And Mad fridgie, do you think there is liquid oil on the inner face of the pipe?
Will the oil on the inner face influence the temperature of the pipe.

Coz I am consider whether I will place the TXV bulb on the vertical pipe.

[El Padre]

Interesting question, I agree that the oil would be at saturation temperature whilst the refrigerant should be above/superheated.

Yes the oil will affect the pipe temperature and phial location if on a horizontal pipe should reflect this.

Cheers