Metallurgy, Vol. 57 No. 1-2, 2018.
Original scientific paper
A study on experiment and numerical simulation of heat exchanger in heating furnace
Z. C. Lv
; School of Materials and Metallurgy, University of science and technology Liaoning, AnShan, China
K. Liu
; School of Materials and Metallurgy, University of science and technology Liaoning, AnShan, China
J. W. Qiu
; School of Materials and Metallurgy, University of science and technology Liaoning, AnShan, China
G. Y. Ma
; Anshan Iron and Steel Group, AnShan, China
C. P. Liu
; Anshan Iron and Steel Group, AnShan, China
Abstract
In this paper, air preheater is used the research object and its heat transfer law is studied by experiment and numerical simulation. The experimental data showed that with the increases of inlet air velocity, the comprehensive heat transfer coefficient and heat transfer efficiency increase, but the temperature efficiency decreases and the resistance loss on the air side increases. The numerical simulation results showed that the larger the diameter of the tube, the better the heat transfer effect. When horizontal spacing in the range of 290 - 305 mm and longitudinal spacing is 70 - 90 mm, the heat transfer effect is best. The optimized heat exchanger structure is that diameter is 60 mm, horizontal spacing is 300 mm, longitudinal spacing is 90 mm. As the inlet air flow rate increases, the heat transfer efficiency increases, but the temperature efficiency decreases and the resistance loss on the air side increases.
Keywords
rolling furance; heat exchanger; numerical simulation; heat transfer; optimization
Hrčak ID:
189365
URI
Publication date:
1.1.2018.
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