proper distribution inside plate evaporators?

[pirestani]

Hi friends
I want to assemble an(plate heat exchanger) ecomomizer and attach it to screw compressor at -15eva. and +35con.by R22.
how can I be so sure about proper distribution of liquid injection or expansion in evaporator side(plates) of economizer concerning to so many plats? is it neccessary to use of especial part or not?
Thank u in advance for advice.

[gregd1401]

Maybe Tichelman principle can be applied here.

[charlie n]

For a small brazed unit used as economizer, distribution is pretty much self regulating. For larger PHE evaporators, a distribution tube is mounted inside the (lower) liquid connection to ensure liquid is injected into every passage.

[pirestani]

thank
but I think Thichelman priciple usually define in uniform pipe&flow and single-phase liquid inside.not here.

[gregd1401]

I have seen injection tube used on large PHE however I gon"t know how to calculate hole sizes. I think this would be fairly critical.

[nevgee]

Try the SWEP site they have downloadable application software and manuals

http://www.swep.net/index.php?tpl=page0&lang=en&id=113

[nike123]

I have seen injection tube used on large PHE however I gon"t know how to calculate hole sizes. I think this would be fairly critical.

Check this manual page 97.
However, dimensions are not given but you could call Alfa Laval technical support and ask if they have ready made products.

[peter2010]

Check this manual page 97.
However, dimensions are not given but you could call Alfa Laval technical support and ask if they have ready made products.

that link look like a spam. you'd better go with official swep.net site.

[nike123]

that link look like a spam. you'd better go with official swep.net site.

And why you think that that link is the spam? Or you just paranoid? Or you work for SWEP?