Oxidation (Rate of)
Oxidation (Rate of) : This has an important bearing upon combustion since if the rate of oxidation is: (1) exceedingly slow, then the heat output will be barely perceptible, and the process may be rusting in the case of iron, rotting as with wood, or weathering as with coal. In all these processes the rate of oxidation is so slow that the heat is dissipated as quickly as it is generated, and hence, no increase in temperature results, although by the time the oxidation is completed the combustible will have evolved just as much heat as it would have done if it had experienced ordinary combustion or fire. (2) high, then the combustion process termed `fire' results. The process is distinguished by the fact that it is accompanied by the evolution of heat and light or incandescence, in quantities and at rates which are serviceable to mankind. (3) instantaneous (more or less), then the process of combustion may be regarded as being equivalent to explosion. Generally for the combustible to experience explosion it must be in either a gaseous state or as a dust, or in any other form in which it may be mixed intimately with oxygen, which may be available as a gas or from an oxidising agent such as potassium nitrate
No records Found