By G. R. Kinney (auth.), K. D. Timmerhaus (eds.)
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Extra resources for Advances in Cryogenic Engineering: Proceedings of the 1958 Cryogenic Engineering Conference
P. : We use an impact machine which is of the type approved by the industry in general. Our results are quantitative. The detonation level we consider as acceptable is· the limit of our machine, which is 185 ft-lbs. The results are not 100 per cent reproducible, but on the basis of ten tests, the statistics are quite reproducible. -40- Our feelings on the present 11 state of the art" are that it definitely needs improvement, and other means of supplying the energy for detonation should be. studied.
The cups are first put through a trichloroethylene vapor degreasing step following a caustic or chem-mill dip to remove any imbedded material in the aluminum surfat;:e, then are deoxidized and rinsed with distilled water. After warm air drying, these cups are stored in a closed container until needed. -29- Figure 5. Plurnrnet weight and striker plate unit Figure 6. Detonation of test sampie -30- The striker pins are c1eaned after each individual use by washing with solvent (such as carbon tetrachloride).
The linear pattern does not extend much above 6 carbon atoms. At the present time it is not possible to predict satisfactorily the solubility of hydrocarbons in liquid oxygen without the use of experimental techniques. Examination of semi-empirical and theoretical approaches is informative, however. The degree of conformity of the hydrocarbonoxygen system to solubility behavior as defined by Raoult' s law will be examined first. Equation (1) states that the logarithrn of the mol fraction. a. of the dissolved hydrocarbon at temperature T is directly proportional to the latent heat of fusion, AHf • and to a function of the melting point temperature.
Advances in Cryogenic Engineering: Proceedings of the 1958 Cryogenic Engineering Conference by G. R. Kinney (auth.), K. D. Timmerhaus (eds.)