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In order to solve the problem of complex calculation of logistics value in process simulation, based on the parameter characteristics of ASPEN PLUS, a simplified logistics calculation model is proposed. The comparison with exercom shows that the error of the calculation results in this paper is less than 1%, which verifies the correctness of the model. The calculation model of logistics flow provides convenience for process simulation software ASPEN PLUS to analyze the simulation process. Based on the logistics calculation model and the “fuel cost” model of thermal economics, a coal-fired boiler of a domestic unit is analyzed. The results show that the heat loss of the boiler mainly occurs in the process of coal decomposition and combustion, followed by the heat exchange process between flue gas and main heat exchange surface. The overall efficiency of the boiler is 46.4%.
PAPER REVISED: 2020-09-08
PAPER ACCEPTED: 2020-09-28
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THERMAL SCIENCE YEAR 2021, VOLUME 25, ISSUE Issue 5, PAGES [3355 - 3363]
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