Catalog - Tri-State Technical Sales Corp.
Catalog - Tri-State Technical Sales Corp.
Catalog - Tri-State Technical Sales Corp.
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
ENGINEERING DATA<br />
Molecular Weights and “C” Factors<br />
Listed below are the molecular weights, specific heat<br />
ratios, and “C” factors for common gases. This “C”<br />
factor is used in formulas for sizing valves for<br />
gas or vapor service.<br />
On the following pages are published capacity charts<br />
for two common gases, air and natural gas, and for<br />
water. These charts can be used for direct selection<br />
of the safety relief valve orifice required without<br />
calculations. Capacities in these charts are based<br />
upon a process media temperature of 60F , and a<br />
compressibility factor (Z) = 1.0. To determine capacities<br />
at other temperatures, further calculations should be<br />
made using the formulas on Page 16.<br />
20<br />
Specific<br />
Heat Ratio<br />
Gas Mol. Wt (Cp/Cv) C<br />
Acetylene - C 2<br />
H 2<br />
26 1.28 345<br />
Air 29 1.40 356<br />
Ammonia - NH 3<br />
17 1.31 348<br />
Argon - Ar 40 1.66 377<br />
Benzene - C 6<br />
H 6<br />
78 1.10 327<br />
Carbon Disulphide - CS 2<br />
76 1.21 338<br />
Carbon Dioxide - CO 2<br />
44 1.29 346<br />
Carbon Monoxide - CO 28 1.40 356<br />
Chlorine - Cl 2<br />
71 1.36 352<br />
Cyclohexane 84 1.08 324<br />
Ethane - C 2<br />
H 6<br />
30 1.19 336<br />
Ethylene - C 2<br />
H 4<br />
28 1.24 341<br />
Freon 22 86.5 1.18 335<br />
Helium - He 4 1.66 377<br />
Hexane - C 6<br />
H 14<br />
86 1.08 324<br />
Hydrochloric Acid - HCl 36.5 1.40 356<br />
Hydrogen - H 2<br />
2 1.41 357<br />
Hydrogen Sulfide - H 2<br />
S 34 1.32 348<br />
Iso Butane 58 1.11 328<br />
Methane - CH 4<br />
16 1.31 348<br />
Methyl Alcohol - CH 3<br />
OH 32 1.20 337<br />
Methyl Chloride - CH 3<br />
Cl 50.5 1.20 337<br />
Methyl Mercaptan - CH 4<br />
S 48.1 1.20 337<br />
N-Butane - C 4<br />
H 10<br />
58 1.11 328<br />
Natural Gas 19 1.27 345<br />
Nitrogen - N 2<br />
28 1.40 356<br />
Oxygen - O 2<br />
32 1.40 356<br />
Pentane - C 5<br />
H 12<br />
72 1.09 325<br />
Propane - C 3<br />
H 8<br />
44 1.13 330<br />
Propylene - C 3<br />
H 6<br />
42 1.15 332<br />
Sulphur Dioxide - SO 2<br />
64 1.28 345<br />
Water Vapor/Steam 18 1.30 347<br />
Specific<br />
Specific<br />
Heat Ratio<br />
Heat Ratio<br />
(Cp/Cv) C (Cp/Cv) C<br />
1.00 315 1.52 366<br />
1.02 318 1.54 368<br />
1.04 320 1.56 369<br />
1.06 322 1.58 371<br />
1.08 324 1.60 372<br />
1.10 327 1.62 374<br />
1.12 329 1.64 376<br />
1.14 331 1.66 377<br />
1.16 333 1.68 379<br />
1.18 335 1.70 380<br />
1.20 337 1.72 382<br />
1.22 339 1.74 383<br />
1.24 341 1.76 384<br />
1.26 343 1.78 386<br />
1.28 345 1.80 387<br />
1.30 347 1.82 388<br />
1.32 349 1.84 390<br />
1.34 351 1.86 391<br />
1.36 352 1.88 392<br />
1.38 354 1.90 394<br />
1.40 356 1.92 395<br />
1.42 358 1.94 397<br />
1.44 359 1.96 398<br />
1.46 361 1.98 399<br />
1.48 363 2.00 400<br />
1.50 365 2.20 412<br />
F7000/8000 SERIES
Change language