- Author
-
Mullins, B. P.
- Title
- Bubble-Points, Flammability Limits and Flash Points of Petroleum Products.
- Coporate
- NationalGas Turbine Establishment
- Report
-
Report R 200; U.D.C. 541.126.4:536.468
January 11, 1956
34 p.
- Keywords
-
petroleum products
|
flammability limits
|
flash point
|
molecular weight
- Abstract
- Relationships between the bubble-points, flammability limits and flash points of a fuel have been demonstrated numerically for four hydrocarbon fuels ranging from aviation spirit to gas oil. The mean molecular weights of the fuel vapours at the bubble-points have been computed and several nomographic methods of presenting corrected bubble-point data are outlined with examples. Weak and rich flammability limits in air of the four fuels were calculated over a range of static pressures. The weak limit curve represents the conditions of the closed flash point test and so by differentiation of this curve a flash point pressure correction factor was obtained for each fuel. Excellent agreement between theoretical and measured values was found in all cases and a simple general rule for estimating flash points is given.