INVESTIGATING GAS HYDRATE IGNITION AT VARIOUS HEATING SCHEMES

Physical and mathematical models have been developed for ignition of gas hydrates in domination of different heat transfer schemes. A numerical investigation has been made into interrelated processes of heat transfer under the conditions of chemical reaction and exothermal and endothermal phase transformations at the stage of initiating gas hydrates′ combustion. The model has been put through practical evaluation in comparing theoretical results of investigations with experimental data. We have established dependences of the main characteristic of the process, viz., ignition delay time as a function of ambient temperature in variation of the emissivity and heat transfer coeffi cients. We have identifi ed the limit values of the main parameters of an energy source, at which the conditions for ignition occur steadily. The varied parameters (the emissivity and heat transfer coefficients and the heating temperature) cover the technological conditions for a group of applications in power engineering.
   
Author:  O. S. Gaidukova, S. Ya. Misyura, P. A. Strizhak
Keywords:  gas hydrates, heating schemes, ignition, ignition delay time, prediction (prognostic) model
Page:  91