Development of equation and method for computing the multi-fuel nozzle inner fuel channel temperature depending on the number of heat exchangers

The paper proposes a method for computing the heat temperature of the multi-fuel injector internal channel walls taking into account the number of heat exchangers. It was found that a decrease in temperature of the nozzle metal wall operating on liquid hydrocarbon fuel could not only inhibit further sedimentation, but also prevent appearance of the carbon-bearing precipitation. Scientific and technical information was analyzed and a patent search was conducted for the multi-fuel injectors. A new formula was obtained for computing the temperature of the multi-fuel injector internal surface depending on the number of heat exchangers, hydrocarbon carbon fuel and coolant mass flow rates, as well as on the other parameters. The new formula was theoretically tested; as a result, it was proven that multi-fuel injectors were more efficient than the single-fuel injectors were, as they were cooling worse and had a shorter resource. Based on the new formula, a new method was developed for computing the temperature of the multi-fuel injector internal channel walls depending on the number of heat exchangers.
EDN: JZYDDI, https://elibrary/jzyddi

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