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- Propane_torch abstract "A propane torch is a tool for burning the flammable gas propane (C3H8). The maximum adiabatic flame temperature a propane torch can achieve with air is 1,995 °C (3,623 °F). Some propane torches are also used with a tank of pure oxygen to achieve a flame temperature nearing 2,820 °C (5,110 °F).The temperature in these flames is lower because of incomplete combustion, heat loss in combustion, oxygen quantity etc. Propane torches are frequently employed to solder copper water pipes. They can also be used for some low temperature welding applications, as well as for brazing dissimilar metals together.In addition to above, a large factor in the temperature of the flame is the percent of oxygen mixing with the propane. With air/fuel torches, since air contains about 21% oxygen, to obtain the maximum flame temperature with air, a very large ratio of air/fuel must be used. Even glass bead-making torches, which are essentially bunsen burners with an added air pump, can only achieve temperatures of 1,100 °C (2,010 °F). With oxygen/propane torches, the air/fuel ratio is much lower. The stoichiometric equation for full combustion of propane with 100% oxygen is:Unbalanced:C3H8 + O2 → H2O + CO2Balanced:C3H8 + 5 (O2) → 4 (H2O) + 3 (CO2)The only products are CO2 and water. This is only true with complete combustion.To get the ratio, the atomic mass of C, H, and O must be determined.O = 16 gC = 12.01 gH = 1.008 gPropane weighs ((3×12.01) + (8×1.008)) = 44.094 g/mol.Oxygen gas weighs (2×16) = 32 g/mol.The balanced equation shows to use 1 mol of propane for every 5 mol of oxygen.(5 × 32 g) / (44.094 g) = 160/44.094 = 3.63 grams oxygen gas for each gram of propane,If using an oxygen/propane torch, the oxygen/fuel ratio is 3.63 by mass, 5:1 molar ratio.For an air/propane torch: 3.63 g O2 × (100 O2)/(21% O2) = 17.28 g air/propane by mass, 23.81 mol O2 / 1 mol propane = 23.81:1 molar air/fuel ratio.This means that it is much harder to achieve complete combustion with air than with oxygen.If the propane does not receive enough oxygen, some of the carbon from the propane are left unburned: Complete combustion:C3H8 + 5 (O2) → 4 (H2O) + 3 (CO2)Examples of incomplete combustion:C3H8 + 4 (O2) → 4 (H2O) + 2 (CO2) + 1 CThe extra carbon mole will cause soot and the less oxygen used the more soot will result. There are other unbalanced ratios where incomplete combustion products such as Carbon Monoxide (CO) are formed, such as:6 (C3H8) + 29 (O2) → 24 (H2O) + 16 (CO2) + 2 CO".
- Propane_torch thumbnail Aa_propaneblowlamp_00.jpg?width=300.
- Propane_torch wikiPageID "4556850".
- Propane_torch wikiPageRevisionID "596714942".
- Propane_torch hasPhotoCollection Propane_torch.
- Propane_torch subject Category:Burners.
- Propane_torch subject Category:Metalworking_tools.
- Propane_torch subject Category:Welding.
- Propane_torch type Artifact100021939.
- Propane_torch type Implement103563967.
- Propane_torch type Instrumentality103575240.
- Propane_torch type MetalworkingTools.
- Propane_torch type Object100002684.
- Propane_torch type PhysicalEntity100001930.
- Propane_torch type Tool104451818.
- Propane_torch type Whole100003553.
- Propane_torch comment "A propane torch is a tool for burning the flammable gas propane (C3H8). The maximum adiabatic flame temperature a propane torch can achieve with air is 1,995 °C (3,623 °F). Some propane torches are also used with a tank of pure oxygen to achieve a flame temperature nearing 2,820 °C (5,110 °F).The temperature in these flames is lower because of incomplete combustion, heat loss in combustion, oxygen quantity etc. Propane torches are frequently employed to solder copper water pipes.".
- Propane_torch label "Propane torch".
- Propane_torch sameAs m.0c8r5r.
- Propane_torch sameAs Q7250083.
- Propane_torch sameAs Q7250083.
- Propane_torch sameAs Propane_torch.
- Propane_torch wasDerivedFrom Propane_torch?oldid=596714942.
- Propane_torch depiction Aa_propaneblowlamp_00.jpg.
- Propane_torch isPrimaryTopicOf Propane_torch.
