LAPSE:2019.0306
Published Article
LAPSE:2019.0306
Two Dimensional Thermal-Hydraulic Analysis for a Packed Bed Regenerator Used in a Reheating Furnace
Chien-Nan Lin, Jiin-Yuh Jang, Yi-Shiun Lai
February 27, 2019
Packed bed is widely used for different industries and technologies, such as heat exchangers, heat recovery, thermal energy storage and chemical reactors. In modern steel industry, packed bed regenerator is widely utilized in the reheating furnace to increase the furnace efficiency. This study established a two dimensional numerical model to simulate a packed bed used in regenerative furnaces. The physical properties of fluids and packed stuffing (such as density, thermal conductivity, and specific heat) are considered as functions of temperature to adapt the large temperature variation in operation. The transient temperature profiles of the flue gas, packed bed, and air during the heating and regeneration period are examined for various switching time (30, 60, 120, and 240 s). The results reveal that, during the heating period, the spanwise averaged heat transfer coefficient is decreased along the longitudinal downstream direction, while during the regeneration period, the opposite trend is true. Moreover, the regenerator thermal effectiveness is decreased by increasing the switching time.
Keywords
heat exchanger, packed bed, regenerator, reheating furnace
Suggested Citation
Lin CN, Jang JY, Lai YS. Two Dimensional Thermal-Hydraulic Analysis for a Packed Bed Regenerator Used in a Reheating Furnace. (2019). LAPSE:2019.0306
Author Affiliations
Lin CN: Department of Mechanical Engineering, Far East University, Tainan 74448, Taiwan
Jang JY: Department of Mechanical Engineering, National Cheng-Kung University, Tainan 70101, Taiwan
Lai YS: Department of Mechanical Engineering, National Cheng-Kung University, Tainan 70101, Taiwan
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Journal Name
Energies
Volume
9
Issue
12
Article Number
E995
Year
2016
Publication Date
2016-11-25
Published Version
ISSN
1996-1073
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PII: en9120995, Publication Type: Journal Article
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LAPSE:2019.0306
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doi:10.3390/en9120995
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Feb 27, 2019
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CC BY 4.0
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[v1] (Original Submission)
Feb 27, 2019
 
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Feb 27, 2019
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Original Submitter
Calvin Tsay
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