hi,
looking for some of the above. google it but i just get junk....
thx
PS: for gases with lower bp than -50!
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?Originally Posted by quintus
[SIGPIC]http://www.vapoli.com/Images/Forum/vapoli.jpg[/SIGPIC]
Single Stage Work Logs
heatware: jinu117
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
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
[SIGPIC]http://www.vapoli.com/Images/Forum/vapoli.jpg[/SIGPIC]
Single Stage Work Logs
heatware: jinu117
Ethylene
Ethane
CO2
R507
R404
R402A
R410
R23 and a few others
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.
Last edited by eshbach; 04-13-2006 at 10:43 PM.
I used to have links here demonstrating how awesome I am, but it's been so long that they're not very relevant (and the pictures have disappeared), so I guess I'll have to get working on new stuff.
Thanks !
@jinu117 --> I quess that pressure in your post is in PSI, and temp in Fahrenheits ?
Last edited by LukeXE; 04-13-2006 at 10:30 PM.
does any one have a T-S diagram for R134a?
cheers
targ
University funded Phase unit in production... Done
Time to start working on more interesting Phase ideas
Youre my hero
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:
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
Bring back natural selection! No more warning lables!
The one and Only MG Pony
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 calculate
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 conditions
Yes, the amount of work the compressor can do on the fluid is based purely on the Hp, BTU, cc or kW rating
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 exchanger
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.
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
University funded Phase unit in production... Done
Time to start working on more interesting Phase ideas
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)
[SIGPIC]http://www.vapoli.com/Images/Forum/vapoli.jpg[/SIGPIC]
Single Stage Work Logs
heatware: jinu117
:thumbsup: :thumbsup:
thank u!
Posting Permissions
Reply With Quote
Bookmarks