|
Critical Properties Guide for
Relief Valve Sizing
- Paratherm Heat Transfer Fluids -
Critical Temperature, Tc
(Calculated) |
Units |
NF© |
HE© |
OR© |
MR™ |
| ºR |
1453 |
1580 |
1524 |
1358 |
| ºF |
993 |
1120 |
1064 |
899 |
| K |
807 |
878 |
847 |
755 |
Critical
Pressure, Pc
(Calculated) |
Units |
NF© |
HE© |
OR© |
MR™ |
| ATM |
11.12 |
26.5 |
13.34 |
12.93 |
| PSIA |
163 |
389 |
196 |
190 |
Critical
Volume, Vc
(Calculated) |
Units |
NF© |
HE© |
OR© |
MR™ |
| cm3/g-mole |
1579 |
720 |
1380 |
987 |
| ft3/lb |
0.0722 |
0.0330 |
0.0632 |
0.0452 |
Heat
of Vaporization,
DH vap
|
Units |
NF© |
HE© |
OR© |
MR™ |
| BTU/lb |
90.72 |
89.76 |
93 |
126.42 |
|
Molecular Weight avg |
Units |
NF© |
HE© |
OR© |
MR™ |
| MW |
350 |
445 |
360 |
230 |
|
Constants |
k=Cp/Cv = |
1.01 |
| C' = |
316.5 |
| R = |
82.06 cm3*atm/mol*K |
| Z = |
0.27 |
| Fb
= |
1.0 |
|
