why do you think molecular mass difference gives better seperation?
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why do you think molecular mass difference gives better seperation?
If you have a blend of heavy and light molecules the heavier will sink to the bottom of the pase separator. If there is great difference in mass the heavier molecules will drop like a brick even if they havent entirely condensed... Thats what ive always thought anyway...
Tom
density and molecular mass are 2 different things... And density is not important when you have a gas and a liquid. liquid always has a bigger density then a gas.
Yes, but if the second stage refrigerant (I think that's what it's called) has an even lower molecular density than the first stage as a gas, think of the difference between them when the first stage is a liquid. You're pretty much guaranteed no second stage refrigerant will exit with the first.Quote:
Originally Posted by Unknown_road
I don't really know what your trying to say carlzor. We are not using weird physics or chemistry to seperate the refrigerants just gravity. Liquid is always heavier so it will always be on the bottom of the phase-sep and the not yet condensed refrigerant above it.
Mine uses both those gasses....along with ~10 others :p:Quote:
Originally Posted by Unknown_road
heheh
I think your's is about the only one that you're probably better off NOT knowing exactly how it works inside, cos you'd know less than you started off with :p:
Funny though, it would be really cool to see it. Personally I think you should take Reg up on his offer and let him open that baby up and see what makes it tick. After reading the little about it that he's posted though, I think I'd probably be lost after about 2-3 stages trying to figure out where everything goes.
What gas? More like what gas HASN'T it got! :D
Gray
that isn't a 2 stage...Quote:
Originally Posted by s7e9h3n
That's what I mean though. You could have two refrigerants, one a liquid and one a gas, yet if they both had the same density/weight for that amount of volume, they would not seperate very well at all. On the other hand, when you have two refrigerants that have a large difference in density/mass between them as gases, when one turns into a liquid it becomes denser, and will seperate much easier.Quote:
Originally Posted by Unknown_road
Hehehe..he still thinks there's some sort of "hidden compressor" in that HX area :DQuote:
Originally Posted by Gray Mole
I don't think such gasses exist...Quote:
Originally Posted by Carlz0r
not quite. Giving example of 2 gases, one will condense while the other wouldn't. Condensed one will flat out be heavier. Go to bottom while not condensed one will stay in middle to top. Just gotta be careful not to get too much of first stage gas or not too little of it into the separation to get good load capacity. The real problem is the load capacity of most autocascade so far since we are not dealing with as much gas as we used to on single stage or cascade per volume passing through compressor that gets in evaporator eventually.Quote:
Originally Posted by Carlz0r
i wanted ro ask you guys if i could use not a very powerful compressor with isceon89 and r508a blend (i can get r508 from my local supplier and Reggie has isceon89 if i'm not mistaken)
the thing is that i'll have my condenser cooled by relly cold air compared to the one in our rooms ;) 15C or even lower
pressures depend on condensering temps, right?
what condenser do i need for an auto? aprox 1kw, correct? or a higher rated one?
ps the compressor i'm planning to use is Danfoss NL11F or i can get a more powerful SC21CL
have you ever build a single stage or cascade before? Autocascades aren't easy as you can see around the forums. using isceon89 as a first stage gas isn't a good plan either. an autocasade already has high discharge pressures when you use also use a high pressure gas it will be very very high.Quote:
Originally Posted by .Cyber1an>>
the question "pressure depens on condensing temps" say to me your not ready for building an autocascade (or even a single stage in my opninion).