Abstract
The article discusses the issue of determining heat losses in solid fuel boilers with periodic fuel loading. The results of comparative calculations of various methods for determining heat losses are presented.
Calculation of heat losses with exhaust gases based on the equations of complete combustion has a high computational complexity and therefore is practically not used in boiler control systems. Siegert’s formula for estimating the amount of heat loss with exhaust gases also has a number of disadvantages: the spread of the parameters of the fuel of one class is not taken into account, the accuracy of the formula decreases with an increase in actual losses. Modeling the combustion process of solid fuel boilers allows, based on the results of a numerical experiment, to obtain a new formula for estimating heat losses with exhaust gases. The formula presented in the article has an accuracy higher than Siegert’s formula, takes into account the content of carbon, ash and humidity in the fuel, but at the same time has a low computational complexity.
The results of calculating the value of heat losses in solid fuel boilers with periodic fuel loading based on modeling of the combustion process are shown, for example, in the works of Xing et al. (2021) and Guo et al. (2020) that the existing methods and approaches have a number of disadvantages: high computational complexity for the normative method and low accuracy when using Siegert’s formula.
The method proposed by the authors for calculating the magnitude of heat losses in solid fuel boilers with periodic fuel loading makes it possible to determine the magnitude of losses without reducing accuracy in comparison with the standard method, but at the same time to significantly simplify the calculation to optimize the calculations and take into account the characteristics of the fuel used in solid fuel boilers.
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Gordin, S.A., Kozlova, O.V., Zaychenko, I.V. (2021). Modeling the Combustion Process of Solid Fuel Boilers. In: Shakirova, O.G., Bashkov, O.V., Khusainov, A.A. (eds) Current Problems and Ways of Industry Development: Equipment and Technologies. Lecture Notes in Networks and Systems, vol 200. Springer, Cham. https://doi.org/10.1007/978-3-030-69421-0_15
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