Hey Peter , thanks God i've read your post , the one replying to Beni , or I would have though that I really spent good time at the university and at work but just for the fun of spending time
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Hey Peter , thanks God i've read your post , the one replying to Beni , or I would have though that I really spent good time at the university and at work but just for the fun of spending time
Was thinking almost the same Botrous.Quote:
Originally Posted by botrous
Fact is also that I knew BESC5240 very well - we worked together some years - and he really knows what he's talking about in many different domains of ***** refrigeration.
I know that if he's asking here a question, then the answer will be not that simple.
He also knows a lot about DWM Copeland, UH and Maneurop compressors and can say without looking in catalogues what
every figure in a complete type of a unit exactly means.
Isn't it BESCY?
Say BESC, where did that 5240 comes from? Your monthly wage in Euro's :D
Peter
I always thought that traps were to help the oil get back to comp rather than stop oil going to evap. :confused:Quote:
As for mostly split AC cooling unit will be at 20 feet below the compressor , have you ever heard of traps to avoid oil going down to the evaporator
Hi peter,
If BESC5240 is as good as you say he is, then I as many have admiration for him it`s just a shame he doesn`t post more often as we could all learn from the old masters. :) :) :)
ps hi BESC5240 :)
Good one Chillin Out, hadn't even seen this one, now it's becoming even more confusing.Quote:
Originally Posted by chillin out
Well why not more posting you said.. he has the same problem as I have...time, time, time.
The OLD masters you said. We're only in our beginnig of the 40 years. LOL :p ;)
But I remember when I was a kid and my father was 40 and I found him already an old man.
Sorry , guys . . . . don't be confused , you're right .... it seems that i was so confused after reading Benis post that i got a malfunction in my brain . . . . I though that all I studied was fake :oQuote:
Originally Posted by chillin out
TRAP - A depression or dip in refrigerant piping in which oil will collect. A trap may be placed at the base of a suction or hot gas riser to improve oil return up the riser.
Dear Beni,
I can assure you: there is nothing wrong with the compressor and it's application.
I would like to have your idea on a velocity I earlier mentioned: 0,6 to 0,8 m/s (calculated mean gas velocity comming out of each circuit).
Is this OK for good oil return?
Hi Peter,
No 5240 is not my monthly wages, but I'll make a suggestion to my boss. It's just my 'number'. For all the applications I need to log in for my work I try to use the same login (and password). So I used my 'number' as a login for this forum.
It's like that 80's song (from New Music?) : 'Living by number' : '...I don't want your name, just your number...
And, I'll try to find more time for this forum.
okay I think you guys are all abit above me in experience I'm only a refrig mechanic .anyway a couple of thoughts ,(don't know if they are good or not)if velocity is low and youre cycling head pressure by fan control could you increase control point to increase head pressure/suction pressure??also maybe the system needs a larger oil charge at installation/commisssioning .also what about installing some extra site glasses in one system as a test case at various points .you may be able to pinpopint something?
[QUOTE=BESC5240]Dear Beni,
I can assure you: there is nothing wrong with the compressor and it's application.
I would like to have your idea on a velocity I earlier mentioned: 0,6 to 0,8 m/s (calculated mean gas velocity comming out of each circuit).
Is this OK for good oil return?
Dear friend,
If nothing is wrong , then there should not be any problem, still U say for oil pumping , connect one oil seperator and forget it or if U having academic interest visit the place even if it is in moon! sitting one thou---nd KM
away and calculating it in your calculator no point!
sorry I have no idea about mean gas velocity at present , I left university 28 years ago , basicly Iam a
electronic engineer , There was a paper in applied mechanic
and flow of fluid which I have totaly forgetten, Iam in refrigeration , its by a chance , MY father was in army and looking after refrigeration and air conditioning and I took it as
a business after my education,
one thing I will tell U , there is lot of difference in theory and when U do it practicaly,
sorry for all the post which has hurt any ones
qualification of the subject,
thanking you all,
beni joseph,
Besc, blijkbaar weet die de klepel niet hangen. Het dringt niet tot hem door wat je eigenlijk wil vragen en waar het probleem zit. Vooral ivm die olietrap sloeg wel alles. En dan zijn uitleg ivm drukken die een oileretour garanderen.
Zo ken ik er nog wel een handvol hoor, die bricoleurs.
Ik heb je dat vergeten te zeggen: wist je dat Peter Roose is verongelukt bij het monteren van een verdamper?
Just some sidenews for BESC.
Hi Peter,
There is adifferent angle to the oil problem. For proper oil seperation there should be sufficient discharge super heat.Ex in case of R22 more than 25 deg F.Say your compressor runs with liquid flood back or sucking wet vapour you normally end up with oil problems :eek:
Quote:
Originally Posted by patrickj
Hi...I think this thread is about a reciprocating unit where it would be the suction superheat that is important to stop refrigerant flooding to the compressor......the discharge superheat as applicable to oil seperation is normally when there are mesh seperators on the discharge side of screw compressors.Best regards etc
Is the evaporator in the picture upside down?Quote:
Originally Posted by BESC5240
Dear Gary,Quote:
Originally Posted by Gary
No it isn't.
The condensing unit is mounted under the the evaporator.
Seems to me that it would work much better if the flow were reversed. Each path would be downhill all the way, instead of uphill. Velocity is only important where refrigerant vapor is trying to push oil uphill.