Investigation on regenerative heat exchanger with novel low-leakage system for flue gas denitration in steel industry

Wang, Limin; Li, Dechao; Zhu, Hua; Chen, Guozhong; Luo, Hongtao

doi:10.1016/j.applthermaleng.2020.115483

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…Before the control of mechanical smoke emission in high-rise building corridors, it is necessary to analyze its motion characteristics, and on the basis of determining the mechanical smoke emission in high-rise building corridors, a motion model of mechanical smoke emission in high-rise building corridors is constructed [8][9][10]:…”

Section: Mechanical Smoke Motion Model Of High-rise Building Corridormentioning

confidence: 99%

Control method of mechanical smoke emission in high-rise building corridor

Chen

2021

THERM SCI

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The traditional method has a large control error in the corridor mechanical smoke control method. Therefore, a multi-task convolutional neural network-based high-rise building corridor mechanical smoke control method is proposed. Through the mechanical smoke exhaust principle of high-rise building corridors, the threshold of mechanical smoke exhaust is set to predict the mechanical smoke exhaust volume of high-rise building corridors. The movement of mechanical smoke in high-rise building corridors is simulated according to fire dynamics simulator to determine the turbulence state of mechanical smoke in high-rise building corridors. Input the mechanical smoke exhaust data of high-rise building corridors into the multi-task convolutional neural network to complete the mechanical smoke exhaust control of high-rise building corridors. Experimental results show that the maximum accuracy of this method is about 98%, and the control time is always less than 1 second.

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Section: Mechanical Smoke Motion Model Of High-rise Building Corridormentioning

confidence: 99%

Control method of mechanical smoke emission in high-rise building corridor

Chen

2021

THERM SCI

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“…There have been few studies about CRTO in China despite its wide application. Similar cylindrical heat exchange structures were mainly rotary air preheaters and gas–gas heat exchangers (GGHs). − The velocity and temperature in the heat exchanger were relatively uniform, and periodic modifications would occur due to rotation. Mao found that the temperature was quite stable with time in the regenerator of a rotary flow reversal reactor.…”

Section: Introductionmentioning

confidence: 99%

Velocity and Temperature Simulation for a Cylindrical Regenerative Thermal Oxidizer

Ren,

Zhang,

Qin

et al. 2024

ACS Omega

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The cylindrical regenerative thermal oxidizer (CRTO) came into being later than the three-chamber regenerative thermal oxidizer (TRTO). Compared with TRTO, CRTO has a smaller size and a larger regenerator volume for absorbing and releasing heat. There are few studies on CRTO despite its numerous applications. A CRTO was selected in industrial applications for simulation research. The velocity and temperature of the CRTO were investigated after error analysis of industrial and simulated data. It was found that the velocity and temperature in the regenerative chamber had obvious stratification and gradients after homogenization by the regenerator unit. The velocity and temperature distribution in the oxidation chamber were independent of the position of the CRTO inlet and outlet or the structure below the regenerator, and there were identical periodic changes in each period. A TRTO with primary parameters as those of the CRTO was employed for comparison. The time of the intake and exhaust periods of a CRTO regenerative chamber were 30 s longer than those of a TRTO. The regenerator volume of heat storage used by CRTO for heat exchange increased by 1/6 compared to that of TRTO at the same total regenerator volume. Simulation shows that CRTO had a more uniform velocity and temperature in the regenerative chamber compared to those in TRTO, increasing by approximately 2%; the thermal efficiency is higher, with an average increase of about 3%.

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