A Study of Variables Affecting Results in the D2274 Accelerated Stability Test. Part 3. Effects of Selected Physical Variables
Abstract
Physical variables were examined to determine their effects on the formation or determination of the insolubles in the ASTM D2274 accelerated stability test. The physical variables that could affect the aging step are: bubbler geometry, the oxygen release depth, the fuel volume, the ratio of wetted surface to fuel volume, the age of the oxidation cell in the temperature bath, and the responsiveness of the bath. We examined the following variables that could affect the results during postaging work-up of the aged fuel: filter porosity, filter type (glass fiber versus membrane), drying time for filterable insolubles, and the use of trisolvent in adherent insolubles recovery. Only the bath responsiveness and the time allowed to dry the filterable insolubles affected the total insolubles measurement. The use of a fritted glass sparger would increase adherent and total insolubles. Variables such as the wetted surface and cell age had some effect on the ratio of filterable to adherent insolubles. Fuel, Navy fuel, Diesel fuel, Naval distillate, Fuel stability, D2274 Variable, Physical variables, Drying time, Bath effects.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1989
- Accession Number
- ADA217586
Entities
People
- E. W. White