MODELING OF WATER-HEATING BOILERS UNDER DEEP PERTURBENCES ON THE HEATING CAPACITY OF FUEL
Journal Title: Вчені записки Таврійського національного університету імені В. І. Вернадського. Серія: Технічні науки - Year 2018, Vol 29, Issue 6
Abstract
The use of biogas is one of the promising areas for the development of the energy sector in Ukraine, but the replacement of natural gas with biogas causes a number of problems in the operation of heat generating equipment. The main problem is the fluctuation of the composition of the gas going to the combustion. Through a different composition of gas, significant fluctuations in air flow occur and, as a result, the properties of the gas-air duct and heat exchange processes change. The influence of the change in the calorific value of the fuel supplied to the combustion device on the capacity of a hot-water boiler is considered. To achieve this goal, the mathematical model of combustion of gaseous fuel has been improved by taking into account the non-linear dependence of the amount of heat supplied to the combustion device and taking into account changes in heat transfer conditions with significant fluctuations in flue gas flow. On the basis of the developed simulation model of 3 boilers KVGM-50, dynamic characteristics were analyzed in the form of acceleration curves obtained by initiating changes in the calorific value of the fuel.
Authors and Affiliations
І. Е. Дуба, К. В. Беглов
Keywords
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