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59 Cards in this Set
- Front
- Back
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What is the heating value of natural gas (CH⁴)? |
1000 BTU/ft³ |
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What is the heating value of propane (C³H8)? |
2500 BTU/ft³ |
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What is the heating value of Butane (C⁴H10)? |
3200 BTU/ft³ |
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What is the specific gravity of Natural Gas? (Gas,liquid)? |
0.6 (gas) 0.42 (liquid) |
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What is the specific gravity of propane? (gas,liquid)? |
1.5 (gas) 0.51 (liquid) |
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What is the specific gravity of Butane? (gas,liquid) |
2 (gas) .58 (liquid) |
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Ratio of ft³ vapour from 1 ft³ liquid CH4? |
634:1 |
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Ratio of ft³ vapour from 1 ft³ liquid C3H8? |
270:1 |
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Ratio of ft³ vapour from 1 ft³ liquid C4H10 |
239:1 |
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Ratio of ft³ vapour from 1 lb liquid CH4 |
23:1 |
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Ratio of ft³ vapour from 1 lb liquid C3H8? |
8.5:1 |
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Ratio of ft³ vapour from 1 lb liquid C4H10 |
6.5:1 |
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Ratio of ft³ vapour from 1 IMP GAL liquid CH4? |
96:1 |
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Ratio of ft³ vapour from 1 IMP GAL liquid CH4 |
43.6:1 |
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Ratio of ft³ vapour from 1 IMP GAL liquid C4H10 |
38:1 |
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Latent heat of vaporization (BTU/lb) CH4 |
92 |
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Latent heat of vaporization (BTU/lb) C3H8 |
185 |
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Latent heat of vaporization (BTU/lb) C4H10 |
166 |
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Theoretical air ratio for combustion CH4 |
10:1 |
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Theoretical air ratio for combustion C3H8 |
24:1 |
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Theoretical air ratio for combustion C4H10 |
30:1 |
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What is the formula for excess air? |
40% of theoretical air |
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Boiling point of CH4 (°F) (°C) |
-256 (°F) -161(°C) |
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Boiling point of C3H8 (°F) (°C) |
-44 (°F) -42 (°C) |
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Boiling point of C4H10 (°F) (°C) |
32 (°F) 0 (°C) |
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Explosive Limit of CH4 |
5-15% |
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Explosive Limit of C3H8 |
2.4-9.6% |
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Explosive Limit of C4H10 |
1.9-8.6% |
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Maximum flame temp in air CH4 |
3500°F |
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Maximum flame temp in air C3H8 |
3650°F |
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Maximum flame temp in air C4H10 |
3660°F |
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Flame speed feet per second CH4 |
1 |
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Flame speed feet per second CH4 |
1 |
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Flame speed feet per second C3H8 |
.95 |
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Flame speed feet per second C4H10 |
1.05 |
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Flame speed feet per second CH4 |
1 |
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Ignition temp °F CH4 |
1230-1360 |
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Ignition temp °F C3H8 |
920-1020 |
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Ignition temp °F C4H10 |
900-1000 |
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1 ft³ = (lbs) |
62.4 |
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1 ft³ = (IMP GAL) |
6.24 |
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1 ft³ = (US GAL) |
7.5 |
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1 ft³ = (in³) |
1728 |
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1 IMP GAL = lbs |
10 |
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1 US GAL = LBS |
8.33 |
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How do you convert Imperial Gal to US GAL |
X6/5 or X1.2 |
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1 ft²= (in²) |
144 |
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1 m³ of H20 = (kgs) |
1000 |
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1 L = (kgs) |
1 |
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1 in³ = (lbs) |
0.0361 |
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1" w.c. = (psi) |
0.036 |
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1 BTU = (watts) |
0.2931 |
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1 Boiler HP = (BTU) |
33 475 |
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Density of air (lbs/ft³) |
0.076 |
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1 m³ = (L) |
1000 |
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Formula for volume of a cylinder |
π(radius)²xHeight |
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1 m³= (kgs) |
1000 |
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What is the latent heat of Fusion (BTUs/lb) (KJ/kg) |
144 Btus/lb 335kj/kg |
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What is the latent heat of vaporization? BTUS/LB KJ/KG |
970 BTUs/lb 2257 KJ/kg |
