Results 51 to 60 of 60
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28-08-2011, 09:17 PM #51
Re: Carters Widget Revealed (Just Facts - Nothing Else)
I'm wondering if there is sufficient liquid pressure to feed the evap coil?
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29-08-2011, 08:05 AM #52
Re: Carters Widget Revealed (Just Facts - Nothing Else)
This had to be considered, when designing the rigg, I chose a large EEV!
I am able to control the superheat right down to 1.5 bar difference, then the evap does become starved.
How ever heat transfer co-efficients may be effected. (how ever I did attempt to simulate this during standard tests)
Thanks again gary for your thoughts
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29-08-2011, 08:42 AM #53
Re: Carters Widget Revealed (Just Facts - Nothing Else)
If the World did not Suck, We would all fall off !
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30-08-2011, 04:39 AM #54
Re: Carters Widget Revealed (Just Facts - Nothing Else)
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30-08-2011, 01:14 PM #55
Re: Carters Widget Revealed (Just Facts - Nothing Else)
Hi Gary
liquid injection agreed, but the minimal discharge superheat required prior to condensor to ensure no liquid to fwidget, surely makes sense, the problem I have is I can not get my head around the quasistatic process required to fathom equilibrium, best left to the real brains of the industry, as not many will, unless you can do us the honour of explaining the process in detail with all your calcs,
R's CMIf the World did not Suck, We would all fall off !
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30-08-2011, 02:38 PM #56
Re: Carters Widget Revealed (Just Facts - Nothing Else)
Calcs? You are confusing me with someone who does math.
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30-08-2011, 03:30 PM #57
Re: Carters Widget Revealed (Just Facts - Nothing Else)
Ok, mate we shall have to hope Chef, DesA or Peter_1 does us the honour of explaining it one day & you can add that to the other 99.9999% of the industry you already have tucked away, thanks anyway mate
If the World did not Suck, We would all fall off !
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31-08-2011, 08:56 AM #58
Re: Carters Widget Revealed (Just Facts - Nothing Else)
Hi mf
Just thinking outside the square - is it possible to calculate roughly when it is not working? with graph gradients or measurements verses time. Say on start up it could be that the sweet spot is not found till after x seconds and then check for additional times. There may be some common parameter values at start up which equal definite failure of experiment. You could be looking at a resonant response for success.
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31-08-2011, 10:09 AM #59
Re: Carters Widget Revealed (Just Facts - Nothing Else)
All tests were completed on a 20 min cycle, with only one change per made at any single time.
So about 12 tests a day.
Plus short term tests when a major change is made. (some times you can see when things are just wrong)
As with any refrig system, time is taken to reach equilibrium, even though this section was ignored for the performance results, it was all ways monitored.
Good thoughts
Tesla
CM; your point also has merit, but as Gary says we are introducing extra energy, what you should of considered is using the liquid line (how ever this has its own issues "less flash gas"
Individual parts can be made to work with satisfaction, but refrigeration is not a group of parts, it is a system!
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31-08-2011, 08:43 PM #60
Re: Carters Widget Revealed (Just Facts - Nothing Else)
Post removed - as again have miss-understood...not a designer...just mr nuts & bolts !
Last edited by chillerman2006; 01-09-2011 at 12:01 PM. Reason: not relevant
If the World did not Suck, We would all fall off !