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21 Cards in this Set
- Front
- Back
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Calorific value of CH4 |
1000 btu/cuft |
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Calorific value of Propane |
2500 btu/cuft |
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Specific gravity of CH4 |
.6 |
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Specific gravity of Propane |
1.5 |
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Flame speed of CH4 |
12” per second |
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Limits of flammability of CH4 |
4 - 15% |
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Limits of Flammability of C3H8 |
2.4 - 9.5% |
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Ratio of air to fuel for CH4 |
10 to 1 |
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Ratio of air to fuel for C3H8 |
25 to 1 |
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Flame temp for CH4 & C3H8 |
3600 F |
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Ignition Temp for CH4 |
1300F |
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Ignition temp of C3H8 |
920 F |
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Flame speed for C3H8 |
18” per second |
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Manifold pressure for CH4 |
3.5” wc |
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Manifold pressure for C3H8 |
11” wc |
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Boiling point of CH4 |
-258 F |
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Complete combustion formula for CH4 |
CH4 + 2O2 > CO2 + 2H2O |
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How much combustion air is required for perfect combustion ? |
1000 btu of input requires 10 cuft of combustion air |
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How much excess air is required for perfect combustion |
1000 btu of input requires 5cuft of excess air supply |
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How much dilution air is required ? |
1000 btu of input requires 15 cuft of dilution air supply |
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How much total air supply volume is needed for combustion ? |
1000 btu of input requires 30 cuft of total air supply Combustion air + excess air + dilution air = total air supply |
