hi,
looking for some of the above. google it but i just get junk....
thx
PS: for gases with lower bp than -50!
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hi,
looking for some of the above. google it but i just get junk....
thx
PS: for gases with lower bp than -50!
which gas in particular?Quote:
Originally Posted by quintus
I can`t find any info about R1150 and R507, Jinu117 do you have some info about those gasses ?
start with r23 and go lower :DQuote:
Originally Posted by jinu117
R-507A
Temp Pressure
-50 0.9
-48 1.7
-46 2.6
-44 3.5
-42 4.5
-40 5.5
-38 6.5
-36 7.6
-34 8.7
-32 9.9
-30 11.1
-28 12.4
-26 13.7
-24 15.0
-22 16.4
-20 17.8
-18 19.3
-16 20.9
-14 22.5
-12 24.1
-10 25.8
-8 27.6
-6 29.4
-4 31.3
-2 33.2
0 35.2
2 37.3
4 39.4
6 41.6
8 43.8
10 46.2
12 48.5
14 51.0
16 53.5
18 56.1
20 58.8
22 61.5
24 64.3
26 67.2
28 70.2
30 73.3
32 76.4
34 79.6
36 82.9
38 86.3
40 89.8
42 93.4
44 97.0
46 100.8
48 104.6
50 108.6
52 112.6
54 116.7
56 121.0
58 125.3
60 129.7
62 134.3
64 139.0
66 143.7
68 148.6
70 153.6
72 158.7
74 163.9
76 169.3
78 174.7
80 180.3
82 186.0
84 191.9
86 197.8
88 203.9
90 210.2
92 216.6
94 223.1
96 229.8
98 236.6
100 243.5
102 250.6
104 257.9
106 265.3
108 272.9
110 280.6
112 288.6
114 296.6
116 304.9
118 313.3
120 321.9
122 330.7
124 339.7
126 348.9
128 358.2
130 367.8
132 377.6
134 387.5
136 397.7
138 408.1
140 418.7
142 429.6
144 440.6
146 451.9
148 462.0
150 475.3
R-23
Temp Pressure
-40 88.2
-35 99.2
-30 111.1
-25 124.0
-20 137.7
-15 152.5
-10 168.3
-5 185.2
0 203.2
5 222.4
10 242.8
15 264.5
20 287.6
25 312.0
30 337.9
35 365.3
40 394.2
45 424.8
50 457.1
55 497.4
60 534.3
65 573.4
70 614.8
Too bad it doesn't go lower but you can pretty much guess :P
Ethylene
http://www.baughman-eshbach.com/temp/ethylene.gif
Ethane
http://www.baughman-eshbach.com/temp/ethane.GIF
CO2
http://www.baughman-eshbach.com/temp/co2.GIF
R507
http://www.baughman-eshbach.com/temp/507.JPG
R404
http://www.baughman-eshbach.com/temp/404.JPG
R402A
http://www.baughman-eshbach.com/temp/402a.JPG
R410
http://www.baughman-eshbach.com/temp/410.JPG
R23 and a few others
http://www.baughman-eshbach.com/temp/other.JPG
If anyone wants another specific gas (or a graph instead of a table for one of the ones here), I can look around. I have a bunch of them saved, but they're scattered about.
Thanks ! :)
@jinu117 --> I quess that pressure in your post is in PSI, and temp in Fahrenheits ?
does any one have a T-S diagram for R134a?
cheers
targ
Youre my hero :toast:Quote:
Originally Posted by eshbach
pt-diagrams can be found at the gas database on the airliquide site.. except for the SUVA mixes...
how should I read the diagrams for the SUVA mixes... don't understand a thing of it
Check this site:Quote:
Originally Posted by GuuZ
http://www.refrigerationbasics.com/1...finitions2.htm
There's info and examples about the Mollier charts :)
Here is one for all the common ones in nice color too :D
Ok, I've looked at the link Jack posted. I've not seen a chart like that since Systems and Control papers at Tech.
Few Q's:
1) To know flow rate you need to know your condensor BTU rating? Of which not many people know.
2) Subcooling is good but would be limited to ambient temperature? Therefore low ambient is better?
3) A greater suction compressor just shifts the same energy but can do it at a lower temperature? Hence why running low side in slight vacuum is a good thing?
Some harder Q's:
4) What would be the optimal cycle?
5) What is the effect of SLHX on the cycle?
Use darcy's Equation which relates pressure drop (from youe throttle device) to the to the velocity of the fluid, based on the speed the flow rate is easy to calculateQuote:
Originally Posted by SexyMF
Yes, unless you are using a heat exchanger between the condenser exit and suction line. but the exit of the condenser is limited by the ambient conditionsQuote:
Originally Posted by SexyMF
Yes, the amount of work the compressor can do on the fluid is based purely on the Hp, BTU, cc or kW ratingQuote:
Originally Posted by SexyMF
By running a slight vacuum you reduce the boiling the point of the fluid therefore get the evap colder.
good question... has a very long answer, but big compressor, big condenser and a heat exchangerQuote:
Originally Posted by SexyMF
increases the sub cooling of the liquid phase (posibly sub ambient, depending on the size of the HX) but increases the temperature (superheat) of the gas entering the compressor, so has the effect of adding extra load.Quote:
Originally Posted by SexyMF
most of this is/will be covered in my final year uni report on refigeration which i will release all/part of to you guys when im done in the next month or two.
shouldnt contain anything ground breaking or teach the 'big boys' anything new, but might explain a few concepts.
HTH
targ
Thanks for taking the time answer Targ.
In some ways this information would be good as a sticky.
Looking forward to the paper :)
It's always nice to have something well organized to look at to be honest. I still look at my learning material occasionally just to refresh myself when I try new concept out. (well, my vapoli is at state where it can't really be improved much without changing of components :P)
:thumbsup: :thumbsup:
thank u!;)